CN120248261A - Polyol component, potting composition containing the polyol component, polyurethane foam and battery product - Google Patents

Polyol component, potting composition containing the polyol component, polyurethane foam and battery product Download PDF

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Publication number
CN120248261A
CN120248261A CN202410008183.5A CN202410008183A CN120248261A CN 120248261 A CN120248261 A CN 120248261A CN 202410008183 A CN202410008183 A CN 202410008183A CN 120248261 A CN120248261 A CN 120248261A
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China
Prior art keywords
flame retardant
polyol component
polyol
melamine
polyurethane foam
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Pending
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CN202410008183.5A
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Chinese (zh)
Inventor
刘伟
丁剑
邱辉
曹政非
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BASF SE
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BASF SE
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Priority to CN202410008183.5A priority Critical patent/CN120248261A/en
Priority to PCT/CN2024/143129 priority patent/WO2025145972A1/en
Publication of CN120248261A publication Critical patent/CN120248261A/en
Pending legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
    • C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
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    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4833—Polyethers containing oxyethylene units
    • C08G18/4837—Polyethers containing oxyethylene units and other oxyalkylene units
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/16—Catalysts
    • C08G18/18—Catalysts containing secondary or tertiary amines or salts thereof
    • C08G18/20—Heterocyclic amines; Salts thereof
    • C08G18/2009—Heterocyclic amines; Salts thereof containing one heterocyclic ring
    • C08G18/2027—Heterocyclic amines; Salts thereof containing one heterocyclic ring having two nitrogen atoms in the ring
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
    • C08G18/3203—Polyhydroxy compounds
    • C08G18/3206—Polyhydroxy compounds aliphatic
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
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    • C08G18/4804—Two or more polyethers of different physical or chemical nature
    • C—CHEMISTRY; METALLURGY
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    • C08G18/4804—Two or more polyethers of different physical or chemical nature
    • C08G18/4816—Two or more polyethers of different physical or chemical nature mixtures of two or more polyetherpolyols having at least three hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
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    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4829—Polyethers containing at least three hydroxy groups
    • C—CHEMISTRY; METALLURGY
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    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4833—Polyethers containing oxyethylene units
    • C08G18/4837—Polyethers containing oxyethylene units and other oxyalkylene units
    • C08G18/485—Polyethers containing oxyethylene units and other oxyalkylene units containing mixed oxyethylene-oxypropylene or oxyethylene-higher oxyalkylene end groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
    • C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
    • C08G18/6666—Compounds of group C08G18/48 or C08G18/52
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    • C08G18/6674—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
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    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
    • C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
    • C08G18/6666—Compounds of group C08G18/48 or C08G18/52
    • C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
    • C08G18/6674—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
    • C08G18/6677—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203 having at least three hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0014—Use of organic additives
    • C08J9/0028—Use of organic additives containing nitrogen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0014—Use of organic additives
    • C08J9/0038—Use of organic additives containing phosphorus
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/34—Heterocyclic compounds having nitrogen in the ring
    • C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
    • C08K5/3477—Six-membered rings
    • C08K5/3492—Triazines
    • C08K5/34922—Melamine; Derivatives thereof
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    • C08K5/51—Phosphorus bound to oxygen
    • C08K5/52—Phosphorus bound to oxygen only
    • C08K5/521—Esters of phosphoric acids, e.g. of H3PO4
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    • C08K5/00—Use of organic ingredients
    • C08K5/49—Phosphorus-containing compounds
    • C08K5/51—Phosphorus bound to oxygen
    • C08K5/53—Phosphorus bound to oxygen bound to oxygen and to carbon only
    • C08K5/5313—Phosphinic compounds, e.g. R2=P(:O)OR'
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • C—CHEMISTRY; METALLURGY
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    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2110/00—Foam properties
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    • C08G2110/0066—≥ 150kg/m3
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    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
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    • C08G2110/0083—Foam properties prepared using water as the sole blowing agent
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    • C08J2201/026—Crosslinking before of after foaming
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    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes
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  • Health & Medical Sciences (AREA)
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  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Electrochemistry (AREA)
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  • Materials Engineering (AREA)
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  • Polyurethanes Or Polyureas (AREA)

Abstract

本发明涉及一种多元醇组分、包含所述多元醇组分的灌封组合物和由灌封组合物制备的聚氨酯泡沫。本发明还涉及包括由所述灌封组合物制备的泡沫的电池制品。The present invention relates to a polyol component, a potting composition comprising the polyol component, and a polyurethane foam prepared from the potting composition. The present invention also relates to a battery product comprising a foam prepared from the potting composition.

Description

Polyol component, potting composition comprising the same, polyurethane foam, and battery article
Technical Field
The present invention relates to a polyol component, a potting composition comprising the polyol component, and a polyurethane foam prepared from the potting composition. The invention also relates to a battery article comprising a foam prepared from the potting composition.
Background
As electric vehicles evolve, automotive manufacturers tend to manufacture batteries with higher and higher energy densities to extend mileage, so the risk of battery failure and internal overheating becomes critical. Polyurethane potting materials are a popular solution for battery "thermal runaway" research.
Conventional potting materials typically achieve some flame retardant properties by adding liquid flame retardants and/or small amounts of solid flame retardants. However, they do not meet the current requirements of higher flame retardant efficiency and flame retardant rating.
Disclosure of Invention
It is an object of the present invention to overcome the problems of the prior art described above and to provide a polyurethane potting composition having high flame retardancy.
Surprisingly, the inventors have found that the above object can be achieved by the polyol component of the present invention as well as the polyurethane potting composition.
In a first aspect of the invention, there is provided a polyol component comprising the following components:
(a-1) at least one polyol reactive towards isocyanates,
(A-2) a chain extender and/or a cross-linking agent,
(A-3) a blowing agent,
(A-4) optionally a catalyst,
(A-5) solid flame retardant, and
(A-6) optionally additives and/or auxiliaries,
Wherein the solid flame retardant comprises an FR-1 flame retardant and an FR-2 flame retardant, the FR-1 flame retardant is a nitrogen-containing solid flame retardant, a metal-free phosphorus-containing solid flame retardant, or a combination thereof, the FR-2 flame retardant is a metal-organic phosphate solid flame retardant, the FR-1 flame retardant comprises 8 to 20 weight percent of the total weight of the polyol component, and the FR-2 flame retardant comprises 5 to 25 weight percent of the total weight of the polyol component.
In a second aspect of the invention, there is provided a potting composition for a battery obtained by reacting at least the following components:
An isocyanate component comprising:
(b-1) at least one isocyanate, and
(B-2) optionally a second flame retardant,
And a polyol component according to the first aspect of the invention.
In a third aspect of the present invention, there is provided a battery article comprising:
Battery unit, and
A polyurethane foam between the cells prepared according to the potting composition of the second aspect of the invention.
Surprisingly, it has been found that in the present invention, products prepared from the polyol component as described above and the potting composition exhibit high elasticity, good electrical insulation and good flame retardancy.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. As used herein, the following terms have the meanings given below, unless otherwise indicated.
As used herein, the articles "a" and "an" refer to one or to more than one (i.e., to at least one) of the grammatical object of the article. For example, "an element" refers to one element or more than one element.
As used herein, the expression "comprising" also encompasses the expression "consisting of.
All percentages (%) refer to "weight percent" unless otherwise indicated.
Unless otherwise indicated, temperature refers to room temperature and pressure refers to ambient pressure.
As used herein, "potting" refers to the process of filling a liquid potting composition (e.g., a polyurethane potting composition in the context of the present invention) into a container (e.g., a battery housing in the context of the present invention). The liquid potting composition poured into the container foams and cures, thereby protecting the internal components (e.g., battery cells in the context of the present invention) from shock and vibration and absorbing deformation pressure generated by deformation of surrounding components. It should be understood that the polyurethane potting composition is free-foaming, i.e., the foam can expand freely in at least one dimension.
In preparing the polyurethane potting material, a mixture of an "isocyanate component" and a "polyol component" (hereinafter also referred to as "resin component" or "resin") is used, wherein the "polyol component" is a mixture of a polyol (a-1) reactive with isocyanate, a chain extender and/or cross-linker (a-2), a blowing agent (a-3), optionally a catalyst (a-4), a solid flame retardant (a-5), optionally additives and/or adjuvants (a-6), and the "isocyanate component" is a mixture of at least one isocyanate (b-1) and optionally a second flame retardant (b-2). The polyol component reacts with the isocyanate to form urethane linkages, such systems being disclosed, for example, in U.S. patent No. 4,218,543.
In commercial applications, the isocyanate component and the polyol component are stored separately, transported to a mixing chamber at the time of use, and mixed (e.g., static or impact) to produce a liquid polyurethane reaction mixture. The liquid polyurethane reaction mixture is then immediately introduced into the receiving cavity of the battery article (e.g., by using a high or low pressure system). There is no limitation on the type of suitable machine.
In a first aspect of the invention, a polyol component is provided for use in preparing a polyurethane potting composition. The polyol component comprises the following components:
(a-1) at least one polyol reactive towards isocyanates,
(A-2) a chain extender and/or a cross-linking agent,
(A-3) a blowing agent,
(A-4) optionally a catalyst,
(A-5) solid flame retardant, and
(A-6) optionally additives and/or auxiliaries,
Wherein the solid flame retardant comprises an FR-1 flame retardant and an FR-2 flame retardant, the FR-1 flame retardant is a nitrogen-containing solid flame retardant, a metal-free phosphorus-containing solid flame retardant, or a combination thereof, the FR-2 flame retardant is a metal-organic phosphate solid flame retardant, the FR-1 flame retardant comprises 8 to 20 weight percent of the total weight of the polyol component, and the FR-2 flame retardant comprises 5 to 25 weight percent of the total weight of the polyol component.
Polyol component
Polyols reactive towards isocyanates (a-1)
The polyol (a-1) reactive with isocyanate may be any polyol useful in the art for polyurethane preparation and having at least two reactive hydrogen atoms. For example, polyether polyols, polyester polyols, or mixtures thereof may be used.
The polyols preferably used are polyether polyols. Polyether polyols are less prone to aging in hot humid environments than polyester polyols. According to the invention, the preferred polyether polyols have a number average molecular weight Mn of 300 to 8000, preferably 3000 to 6500, and a functionality (Fn) of 2≤3. The preferred polyether polyols described above have low viscosities which allow the polyol component to be added with solid flame retardants, yet have lower viscosities and good processability. Examples of suitable commercially available polyols include2090(BASF)、2048(BASF)。
Polyether polyols are prepared from one or more alkylene oxides having from 2 to 4 carbon atoms in the alkylene radical and adding at least one starter comprising from 2 to 8 reactive hydrogen atoms by known methods, for example by anionic polymerization using alkali metal hydroxides or alkali metal alkoxides as catalysts or by cationic polymerization using Lewis acids, such as antimony pentachloride or boron trifluoride etherate, as catalysts. The catalysts used may furthermore be multimetal cyanide compounds, so-called DMC catalysts.
Examples of suitable alkylene oxides include ethylene oxide, tetrahydrofuran, 1, 3-propylene oxide, 1, 2-butylene oxide and 2, 3-butylene oxide. The alkylene oxides may be used individually or alternately in sequence or in mixtures.
Examples of suitable initiators include water or diols and triols, such as ethylene glycol, propane-1, 2-diol or propane-1, 3-diol, diethylene glycol, dipropylene glycol, butane-1, 4-butanediol, glycerol and trimethylolpropane.
The polyol (a-1) is present in an amount of 35 to 85 wt%, preferably 40 to 70 wt%, based on the total weight of the polyol component.
Optionally, the polyether polyol used to prepare the polyurethane of the present invention further comprises a flame retardant polyether polyol. The flame-retardant polyether polyol introduces phosphorus and halogen elements into the molecular chain of the polyol, so that the flame-retardant effect is achieved. The flame-retardant polyether polyols preferably used have a number-average molecular weight Mn of from 300 to 8000, preferably from 3000 to 6500, and a functionality (Fn) of 2≤4. Examples of suitable commercially available flame retardant polyether polyols include ZR-001 from Lanstar Dongda. Flame retardant polyether polyols for use in the present invention may also be prepared by known methods. For example, they can be prepared by reacting a halogen-containing initiator with an alkylene oxide in the presence of a catalyst. The flame retardant polyether polyol comprises from 0 wt% to 40 wt%, preferably from 5wt% to 20 wt% of the total weight of the polyether polyol.
Chain extenders and/or crosslinkers (a-2)
Chain extenders and/or crosslinkers (a-2) which can be used are substances having a molar mass of preferably less than 500g/mol, particularly preferably from 60 to 400g/mol, where the chain extender has 2 hydrogen atoms which are reactive toward isocyanates and the crosslinker has 3 hydrogen atoms which are reactive toward isocyanates. These substances may be used alone or preferably in the form of a mixture. Preferably, diols and/or triols having molecular weights of less than 500, in particular from 60 to 400, in particular from 60 to 200, are used. Examples of those which may be used are aliphatic, cycloaliphatic and/or araliphatic diols having from 2 to 14, preferably from 2 to 10, carbon atoms, such as ethylene glycol, 1, 3-propanediol, 1, 4-butanediol, 1, 6-hexanediol, 1, 10-decanediol, 1,2-, 1, 3-and 1, 4-dihydroxycyclohexane, diethylene glycol, dipropylene glycol, tripropylene glycol, diethanolamine or triols, such as 1,2, 4-or 1,3, 5-trihydroxycyclohexane, glycerol and trimethylolpropane. The chain extender and/or cross-linker (a-4) is preferably selected from ethylene glycol, diethylene glycol, dipropylene glycol, tripropylene glycol, propylene glycol and 1, 4-butanediol.
The chain extender and/or crosslinker (a-2) comprise from 1 to 10 weight percent of the total weight of the polyol component.
Foaming agent (a-3)
The blowing agent (a-3) used according to the invention preferably comprises water. The foaming agent used may also comprise other chemical and/or physical foaming agents in the art as well as water. Chemical blowing agents are compounds which form gaseous products by reaction with isocyanates, examples being water or formic acid. Physical blowing agents are compounds which have been dissolved or emulsified in the starting materials for polyurethane preparation and which evaporate under the conditions of polyurethane formation. These are, for example, hydrocarbons, halogenated hydrocarbons and other compounds, such as perfluoroalkanes, e.g. perfluorohexane, fluorochlorohydrocarbons, and ethers, esters, ketones and/or acetals. In a preferred embodiment, water is used as the sole blowing agent (a-3). In this case, the polyurethane foam according to the present invention is a water-blown polyurethane foam.
The blowing agent (a-3) is present in an amount of 0.1 to 4% by weight, preferably 0.2 to 1% by weight, based on the total weight of the polyol component.
Catalyst (a-4)
As catalysts (a-4), such compounds are known and are described, for example, in "Kunststoffhandbuch, volume 7, polyurethane", CARL HANSER VERLAG, 3 rd edition, 1993, chapter 3.4.1. These include amine-based catalysts and catalysts based on organometallic compounds.
As the catalyst based on the organometallic compound, for example, an organotin compound such as tin (II) salts of organic carboxylic acids, for example, tin (II) acetate, tin (II) octoate, tin (II) ethylhexanoate and tin (II) laurate, and dialkyltin (IV) salts of organic carboxylic acids, for example, dibutyltin diacetate, dibutyltin dilaurate, dibutyltin maleate and dioctyltin diacetate, and bismuth carboxylates, for example, bismuth (III) neodecanoate, bismuth 2-ethylhexanoate and bismuth octoate, or alkali metal salts of carboxylic acids, for example, potassium acetate or potassium formate, can be used.
Amine-based catalysts such as N, N, N ', N' -tetramethyldipropylene triamine, 2- [2- (dimethylamino) ethyl-methylamino ] ethanol, N, N, N '-trimethyl-N' -2-hydroxyethyl-bis- (aminoethyl) ether, bis (2-dimethylaminoethyl) ether, N, N, N, N, N-pentamethyldiethylene triamine, N, N, N-triethylaminoethoxy ethanol, dimethylcyclohexylamine, trimethylhydroxyethyl ethylenediamine, dimethylbenzylamine, triethylamine, triethylenediamine, pentamethyldipropylene triamine, dimethylethanolamine, N-methylimidazole, N-ethylimidazole, tetramethylhexamethylenediamine, tris (dimethylaminopropyl) hexahydrotriazine, dimethylaminopropylamine, N-ethylmorpholine, diazabicycloundecene and diazabicyclononene are preferably used as catalysts (a-4). Examples of suitable commercially available amine catalysts include Dabco 33LV.
The catalyst (a-4) represents 0 to 5% by weight, preferably 0.1 to 3.5% by weight, based on the total weight of the polyol component.
Solid flame retardant (a-5)
The solid flame retardant (a-5) suitable for the present invention comprises an FR-1 flame retardant and an FR-2 flame retardant, the FR-1 flame retardant being a nitrogen-containing solid flame retardant, a metal-free phosphorus-containing solid flame retardant or a combination thereof, the FR-2 flame retardant being a metal-organic phosphate solid flame retardant. The solid flame retardant combination according to the present invention may achieve higher flame retardant efficiency and flame retardant rating than a liquid flame retardant and a single solid flame retardant.
Specific examples of the nitrogen-containing solid flame retardant include melamine, melamine salts, guanidine, melamine Cyanurate (MCA), melamine polyphosphate (MPP), melamine phosphate, melamine formaldehyde, methylolated melamine, hexamethoxymethyl melamine, urea, dimethylurea, melamine pyrophosphate, dicyandiamide, guanylurea phosphoric acid, and glycine, preferably melamine and its derivatives (e.g., melamine cyanurate, melamine polyphosphate, melamine phosphate, and the like).
The metal-free phosphorus-containing solid flame retardant comprises at least one member selected from the group consisting of 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO), triphenyl phosphate, ammonium polyphosphate, red phosphorus, tributyl phosphate (RBP), and mixtures thereof.
The FR-1 flame retardant comprises 8 to 20 weight percent of the total weight of the polyol component. For example, the FR-1 flame retardant can comprise 8 wt%, 9 wt%, 10wt%, 11 wt%, 12 wt%, 13 wt%, 14 wt%, 15 wt%, 16 wt%, 17 wt%, 18 wt%, 19 wt%, 20 wt%, etc. of the total weight of the polyol component. In one embodiment, the FR-1 flame retardant has a particle size D95 of 60 μm or less, preferably 40 μm or less, more preferably 25 μm or less.
The metal organic phosphate solid flame retardant comprises at least one metal salt selected from phosphoric acid, phosphonic acid or phosphinic acid, wherein the metal is selected from iron, aluminum, magnesium, zinc, lanthanum, cerium and the like. The metal organic phosphate solid flame retardant (FR-2 flame retardant) comprises 5 to 25 weight percent of the total weight of the polyol component. For example, the metal organic phosphate solid flame retardant (FR-2 flame retardant) may comprise 5wt%, 6 wt%, 7 wt%, 8 wt%, 9 wt%, 10 wt%, 11 wt%, 12 wt%, 13 wt%, 14 wt%, 15 wt%, 16 wt%, 17 wt%, 18 wt%, 19 wt%, 20 wt%, 21 wt%, 22 wt%, 23 wt%, 24 wt%, 25 wt%, or the like, based on the total weight of the polyol component. In one embodiment, the FR-2 flame retardant has a particle size D95 of 120 μm or less, preferably 60 μm or less.
Preferably, the weight ratio of FR-2 flame retardant to FR-1 flame retardant is from 3:1 to 1:4. For example, the weight ratio of FR-2 flame retardant to FR-1 flame retardant may be 3:1, 2:1, 1:1, 1:2, 1:3, 1:4, or the like.
The metal-organic phosphate solid flame retardant preferably used is a metal organic phosphinate having the formula:
R 1、R2 are identical or different and represent a linear or branched C 1-C6 alkyl group (more preferably a C 1-C4 alkyl group);
M represents Al, mg, ca, sb, sn, ge, ti, fe, zr, zn, ce, bi, sr, mn, li, na, K;
m represents 1,2, 3 or 4.
Preferably, the metal organic phosphinate is selected from the group consisting of aluminum diethylphosphinate, aluminum methylethylphosphinate, aluminum dipropylphosphinate, aluminum dibutylphosphinate, aluminum ethylbutylphosphinate, aluminum ethylhexyl phosphinate, aluminum butylhexylphosphinate, and mixtures thereof.
Specific examples of the metal organic phosphate solid flame retardant also include iron phenylphosphate (PPFe), aluminum phenylphosphate (PPAl), zinc phenylphosphate (PPZn), triphenyliron phosphate (PP 3Fe 2), and iron phenylphosphate (PHA-Fe).
In a preferred embodiment, the solid flame retardant (a-5) of the present invention does not comprise expandable graphite. This results in the polyurethane foam of the present invention having higher electrical insulation.
In one embodiment, the total amount of solid flame retardant (a-5) is preferably 13 to 45wt%, more preferably 25 to 40wt%, based on the total weight of the polyol component.
Additives and/or auxiliaries (a-6)
Additives and/or adjuvants (a-6) that may be used include, but are not limited to, surfactants, preservatives, colorants, antioxidants, reinforcing agents, stabilizers, and water absorbing agents. In the preparation of polyurethane foams, it is generally preferred to use a small amount of surfactant to stabilize the foaming reaction mixture until it cures. Such surfactants advantageously comprise liquid or solid organosiloxane surfactants in amounts sufficient to stabilize the foaming reaction mixture. Typically, the amount of adjuvants, especially surfactants, is from 0.5 to 5% by weight based on the total weight of the polyol component.
Further information about the use and mode of action of the above-mentioned auxiliaries and additives and further examples are given, for example, in "Kunststoffhandbuch, band 7, polyurethanes" [ "Plastics handbook, volume 7, polyurethanes" ], CARL HANSER VERLAG, 3 rd edition, 1993, chapter 3.4.
The polyol component according to the present invention has a viscosity of 500 to 600 mpa.s, measured according to ASTM D2196-15.
In a second aspect of the invention, there is provided a potting composition obtained by reacting at least the following components:
An isocyanate component comprising:
(b-1) at least one isocyanate, and
(B-2) optionally a second flame retardant,
A polyol component according to the first aspect of the invention.
Isocyanate component
Isocyanate (b-1)
The present invention is not limited in the type of polyisocyanate, and refers to an organic compound containing two or more reactive isocyanate groups per molecule, i.e., a functionality of 2 (in which case the polyisocyanate is also referred to as a diisocyanate) or greater than 2. Examples of isocyanates may include any aliphatic, cycloaliphatic, araliphatic and aromatic di-or polyfunctional isocyanate known in the art and any desired mixtures thereof. The isocyanate may be a monomeric, a prepolymer and/or a polymeric isocyanate.
Suitable examples include aliphatic, cycloaliphatic, araliphatic and/or aromatic isocyanates, such as tri-, tetra-, penta-, hexa-, hepta-and/or octamethylene diisocyanate, 2-methyl pentamethylene 1, 5-diisocyanate, 2-ethylbutylene 1, 4-diisocyanate, pentamethylene 1, 5-diisocyanate, butylene 1, 4-diisocyanate, 1-isocyanato-3, 5-trimethyl-5-isocyanatomethylcyclohexane (isophorone diisocyanate, IPDI), 1, 4-and/or 1, 3-bis (isocyanatomethyl) cyclohexane (HXDI), cyclohexane 1, 4-diisocyanate, 1-methylcyclohexane 2, 4-and/or 2, 6-diisocyanate and/or dicyclohexylmethane 4,4' -/2,4' -and 2,2' -diisocyanate, diphenylmethane 2,2' -, 2,4' -and/or 4,4' -diisocyanate (MDI), polymeric MDI, naphthylene 1, 5-diisocyanate (NDI), toluene 2,4' -diisocyanate and/or 2, 3' -diisocyanate, and/or 2, 3' -diisocyanate. Particular preference is given to using 2,2' -, 2,4' -and/or 4,4' -diisocyanate and polymeric MDI. Examples of suitable commercially available isocyanate compounds includeM20S (from BASF) orMIPS (from BASF).
Other possible isocyanates are given, for example, in "Kunststoffhandbuch, band 7, polyurethanes" [ Plastics handbook, volume 7, polyurethanes ], CARL HANSER VERLAG, 3 rd edition, 1993, chapters 3.2 and 3.3.2.
Furthermore, the isocyanate component may also be used in the form of an isocyanate prepolymer. The isocyanate prepolymer can be obtained by reacting the above isocyanate with a polyol.
According to the invention, the NCO content of the isocyanate is preferably in the range of 12 to 35, fn≥2 based on the parts by weight of the isocyanate component. The isocyanate comprises 60 to 100 wt%, preferably 65 to 95 wt%, more preferably 80 to 95 wt%, of the total weight of the isocyanate component.
Flame retardant (b-2)
The isocyanate component optionally comprises a second flame retardant. The second flame retardant comprises a liquid flame retardant selected from at least one of, for example, an organic phosphorus-containing flame retardant such as resorcinol bis (diphenyl) phosphate (RDP), tris (1-chloro-2-propyl) phosphate (TCPP), tricresyl phosphate (TCP).
Optionally, the isocyanate component may also comprise nitrogen-containing solid flame retardants, metal-free phosphorus-containing solid flame retardants and/or metal-organophosphate solid flame retardants mentioned in the polyol component.
According to the invention, the flame retardant (b-2) represents from 0% to 40% by weight, preferably from 5% to 35% by weight, more preferably from 5% to 20% by weight, based on the total weight of the isocyanate component.
According to the invention, the polyol component and the isocyanate component are mixed in a weight ratio of 100 (30-100), e.g., 100:30, 100:40, 100:50, 100:60, 100:70, 100:80, 100:90 or 100:100, preferably 100 (40-90).
In a third aspect of the present invention, there is provided a battery article comprising:
Battery unit, and
A polyurethane foam between the cells prepared according to the potting composition of the second aspect of the invention.
The battery article may be prepared by the steps of:
1) Injecting a potting composition of the second aspect of the invention into the cavity between the battery cells;
2) Curing is maintained at a temperature of, for example, 10-35 ℃ for 10-60 minutes.
The present invention is not particularly limited in the type of battery cell. For example, the assembled type of the battery cell may be a cylindrical battery, a pouch battery, a prismatic battery, or a blade battery. It should be understood that the battery product according to the present invention includes other elements such as a BMS battery management system in addition to the battery cells.
In step 1), the injection may be continuous or discontinuous.
In order to fill as many chambers of the battery article as possible in a short time frame, the inventors of the present invention found that the potting composition should have good fluidity. According to the invention, the potting composition (i.e. the liquid polyurethane reaction mixture) has an initial viscosity of less than 7000 mPa-s, preferably less than 5000 mPa-s, at a temperature of 25 ℃, measured according to ASTM D2196-15. The initial viscosity of the polyurethane reaction mixture was measured by measuring the viscosity of the resulting polyurethane reaction mixture at a temperature of 25℃immediately after mixing the polyol component and the isocyanate component according to ASTM D2196-15. The inventors of the present invention found that the potting composition having this initial viscosity has good flowability and processability, allowing the potting composition to rapidly fill cavities of complex shape. Meanwhile, good fluidity is beneficial to leveling of the potting composition in a short time.
In step 2), the potting composition is cured at a temperature of 10-35 ℃, preferably 15-25 ℃ for 10-60 minutes, preferably 5-30 minutes. It is industrially advantageous to select the temperature so that the entire curing process can be completed in a short time.
In one embodiment, the polyurethane foam according to the invention has a surface hardness of not more than 80 shore a, preferably not more than 65 shore a, more preferably not more than 55 shore a. That is, the polyurethane foam according to the present invention is a "soft foam", which makes it possible to effectively absorb the surrounding deformation pressure and protect the internal battery cells and the like.
In one embodiment, the polyurethane foam according to the invention has a dielectric strength of greater than 4KV/mm and a volume resistivity of greater than 1X 10 11 Ω cm, preferably greater than 1X 10 12 Ω cm. This indicates that the polyurethane foam of the present invention has good electrical insulation.
In one embodiment, the polyurethane foam according to the present invention has a flame retardancy of at least V2 or higher as measured according to the UL 94 test. In one embodiment, the polyurethane potting foam has a flame retardancy of at least V1 or higher as measured according to the UL 94 test. In one embodiment, the polyurethane potting foam has a flame retardancy of V0 rating as measured according to the UL 94 test.
In one embodiment, the polyurethane foam according to the invention has a modulus measured according to ISO1798 of less than 25MPa, preferably less than 20MPa, more preferably less than 10MPa, an elongation of the polyurethane potting foam of more than 5%, preferably more than 10%, more preferably more than 20%, and a tensile strength of from 0.8 to 2.5MPa, preferably from 1 to 2MPa.
In one embodiment, the polyurethane foam according to the invention has a density of 0.1 to 0.4g/cm 3, preferably 0.2 to 0.3g/cm 3.
It should be noted that throughout this application, the materials mentioned in the process embodiments have the same meaning as those in the product embodiments, and that each of the general, preferred, more preferred and most preferred definitions and amounts of materials described in the product section apply also to the process of making the product and to the articles made from the product, unless otherwise indicated.
Examples
The present invention will now be described with reference to examples and comparative examples, which are not intended to limit the present invention.
General description
In the examples the following starting materials were included:
the following method was used to determine properties:
preparation examples of potting compositions
The polyol component and isocyanate component of examples 1-9 and comparative examples 1-7 were prepared by mixing the corresponding ingredients according to table 1 and stored in separate containers. In use, the two components are delivered to a mixing chamber at 150 bar with the mixing ratio shown in table 1 and impact mixed to produce a liquid polyurethane reaction mixture (i.e., potting composition). The initial viscosities of the resulting liquid polyurethane reaction mixtures of examples 1-9 and comparative examples 1-7 are also set forth in Table 1.
As shown in Table 1, the initial viscosity of the liquid polyurethane reaction mixtures of examples 1 to 9 was 1650 to 6900 mPas, which provided the desired flowability to the resulting liquid polyurethane reaction mixtures.
In contrast, the initial viscosity of the liquid polyurethane reaction mixture of comparative example 2 was 8600 mPas, which was too viscous to have sufficient fluidity to be leveled.
Preparation examples of battery articles
The battery product includes a battery case and has a size of 150cm (width) ×150cm (length) ×15cm (height). The battery cells are placed inside the battery housing, i.e. on the bottom of the battery housing. The battery article further includes other components. The battery cells and other components divide the interior space of the battery housing into a plurality of receiving chambers.
Polyol component A and isocyanate component B of examples 1-9 and comparative examples 1-7 were prepared according to the amounts shown in Table 1 below (in weight%). Polyol component A and isocyanate component B were mixed according to the ratio A: B shown in Table 1 below to obtain a liquid polyurethane reaction mixture. A liquid polyurethane reaction mixture is injected into the receiving cavity. The volumes of the liquid polyurethane reaction mixtures injected in the examples and comparative examples are the same.
The battery was kept at room temperature (25 ℃) for curing after injection. The liquid polyurethane reaction mixture gradually cures into a polyurethane foam.
The flame retardant properties of the polyurethane foams obtained in examples 1 to 9 and comparative examples 1 to 7 were measured. As shown in Table 1, the polyurethane foams of examples 1-9 have flame retardancy (i.e., V1 and V0) of at least V2 or even higher as measured according to the UL 94 test. In contrast, the flame retardant test of the comparative example failed (it is to be understood that the initial viscosity of comparative example 2 was too high (8600 mPa.s), which resulted in an inability to perform effective potting.
Specifically, in comparative examples 1 and 4, when the content of the FR-1 flame retardant is less than 8 wt% based on the total weight of the polyol component, the flame retardant property test of the polyurethane foam fails. In comparative examples 3 and 5, the flame retardant property test of the polyurethane foam failed when the content of the FR-2 flame retardant was less than 5 wt% based on the total weight of the polyol component.
By comparison of examples 1-9 and comparative examples 6-7, the flame retardant property test of the polyurethane foam failed when the polyol component contained no FR-2 flame retardant but contained an inorganic phosphate.
In addition, the mechanical properties, electrical insulation and the like of the polyurethane foams obtained in examples 1 to 9 were also measured. As shown in Table 2, the polyurethane foams of examples 1 to 9 exhibited soft, high elasticity and good electrical insulation.
TABLE 2
The structures, materials, components, compositions, and methods described herein are intended as representative examples of the invention, and it should be understood that the scope of the invention is not limited by the scope of the examples. Those skilled in the art will recognize that the invention can be practiced with modification to the structures, materials, compositions, and methods disclosed, and that such modifications are considered to be within the scope of the invention. Accordingly, it is intended that the present invention cover such modifications and variations as fall within the scope of the appended claims and their equivalents.

Claims (20)

1.多元醇组分，包含以下组分：1. Polyol component, comprising the following components: (a-1)至少一种对异氰酸酯呈反应性的多元醇，(a-1) at least one isocyanate-reactive polyol, (a-2)扩链剂和/或交联剂，(a-2) a chain extender and/or a cross-linking agent, (a-3)发泡剂，(a-3) a foaming agent, (a-4)任选地催化剂，(a-4) optionally a catalyst, (a-5)固体阻燃剂，和(a-5) a solid flame retardant, and (a-6)任选地添加剂和/或助剂，(a-6) optionally additives and/or auxiliaries, 其中固体阻燃剂包含FR-1阻燃剂和FR-2阻燃剂，所述FR-1阻燃剂为含氮固体阻燃剂、不含金属的含磷固体阻燃剂或其组合，所述FR-2阻燃剂为金属有机磷酸盐固体阻燃剂，所述FR-1阻燃剂占多元醇组分总重量的8至20重量％，所述FR-2阻燃剂占多元醇组分总重量的5至25重量％。The solid flame retardant comprises FR-1 flame retardant and FR-2 flame retardant, wherein the FR-1 flame retardant is a nitrogen-containing solid flame retardant, a metal-free phosphorus-containing solid flame retardant or a combination thereof, and the FR-2 flame retardant is a metal organic phosphate solid flame retardant. The FR-1 flame retardant accounts for 8 to 20 weight % of the total weight of the polyol component, and the FR-2 flame retardant accounts for 5 to 25 weight % of the total weight of the polyol component. 2.根据权利要求1所述的多元醇组分，其中FR-2阻燃剂和FR-1阻燃剂的重量比为3:1至1:4。2 . The polyol component according to claim 1 , wherein the weight ratio of the FR-2 flame retardant to the FR-1 flame retardant is 3:1 to 1:4. 3.根据权利要求1或2所述的多元醇组分，其中，所述固体阻燃剂占多元醇组分总重量的13至45重量％。3. The polyol component according to claim 1 or 2, wherein the solid flame retardant accounts for 13 to 45 weight % of the total weight of the polyol component. 4.根据权利要求1或2所述的多元醇组分，其中所述含氮固体阻燃剂包括选自以下的至少一种：三聚氰胺、三聚氰胺盐、胍、氰尿酸三聚氰胺、聚磷酸三聚氰胺、磷酸三聚氰胺、三聚氰胺甲醛、羟甲基化三聚氰胺、六甲氧基甲基三聚氰胺、脲、二甲基脲、焦磷酸三聚氰胺、双氰胺、脒基脲磷酸、甘氨酸，优选三聚氰胺及其衍生物。4. The polyol component according to claim 1 or 2, wherein the nitrogen-containing solid flame retardant comprises at least one selected from the group consisting of melamine, melamine salts, guanidine, melamine cyanurate, melamine polyphosphate, melamine phosphate, melamine formaldehyde, hydroxymethylated melamine, hexamethoxymethyl melamine, urea, dimethyl urea, melamine pyrophosphate, dicyandiamide, guanyl urea phosphate, glycine, preferably melamine and its derivatives. 5.根据权利要求1或2所述的多元醇组分，其中所述不含金属的含磷固体阻燃剂包括选自以下的至少一种：9,10-二氢-9-氧杂-10-磷杂菲-10-氧化物(DOPO)、磷酸三苯酯、多聚磷酸铵、红磷、磷酸三丁酯(RBP)以及它们的混合物。5. The polyol component according to claim 1 or 2, wherein the metal-free phosphorus-containing solid flame retardant comprises at least one selected from the group consisting of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO), triphenyl phosphate, ammonium polyphosphate, red phosphorus, tributyl phosphate (RBP), and mixtures thereof. 6.根据权利要求1或2所述的多元醇组分，其中所述金属有机磷酸盐固体阻燃剂包括选自以下的至少一种：磷酸、膦酸或次膦酸的金属盐，其中金属选自铁、铝、镁、锌、镧或铈。6. The polyol component according to claim 1 or 2, wherein the metal organic phosphate solid flame retardant comprises at least one selected from the following: a metal salt of phosphoric acid, phosphonic acid or phosphinic acid, wherein the metal is selected from iron, aluminum, magnesium, zinc, lanthanum or cerium. 7.根据权利要求1或2所述的多元醇组分，其中所述金属有机磷酸盐固体阻燃剂包括具有下式的有机次膦酸金属盐：7. The polyol component of claim 1 or 2, wherein the metal organic phosphate solid flame retardant comprises an organic phosphinate metal salt having the formula: R1、R2相同或不同并且表示直链或支化的C1-C6烷基(更优选C1-C4烷基)；R 1 and R 2 are the same or different and represent a linear or branched C 1 -C 6 alkyl group (more preferably a C 1 -C 4 alkyl group); M表示Al、Mg、Ca、Sb、Sn、Ge、Ti、Fe、Zr、Zn、Ce、Bi、Sr、Mn、Li、Na、K；M represents Al, Mg, Ca, Sb, Sn, Ge, Ti, Fe, Zr, Zn, Ce, Bi, Sr, Mn, Li, Na, K; m表示1、2、3或4，m means 1, 2, 3 or 4, 优选地，有机次膦酸金属盐为选自以下的至少一种：二乙基次膦酸铝、甲基乙基次膦酸铝、二丙基次膦酸铝、二丁基次膦酸铝、乙基丁基次膦酸铝、乙基己基次膦酸铝、丁基己基次膦酸铝以及它们的混合物。Preferably, the metal salt of the organic phosphinate is at least one selected from the group consisting of aluminum diethylphosphinate, aluminum methylethylphosphinate, aluminum dipropylphosphinate, aluminum dibutylphosphinate, aluminum ethylbutylphosphinate, aluminum ethylhexylphosphinate, aluminum butylhexylphosphinate, and mixtures thereof. 8.根据权利要求1或2所述的多元醇组分，其中对异氰酸酯呈反应性的多元醇是聚醚多元醇，其数均分子量Mn为300至8000、优选3000至6500，并且2≤官能度Fn≤3。8. The polyol component according to claim 1 or 2, wherein the isocyanate-reactive polyol is a polyether polyol having a number average molecular weight Mn of 300 to 8000, preferably 3000 to 6500, and a functionality Fn of 2≤3. 9.根据权利要求1或2所述的多元醇组分，其中所述对异氰酸酯呈反应性的多元醇占多元醇组分总重量的35重量％至85重量％，优选40重量％至70重量％。9. The polyol component according to claim 1 or 2, wherein the isocyanate-reactive polyol accounts for 35 to 85 wt%, preferably 40 to 70 wt%, based on the total weight of the polyol component. 10.根据权利要求8所述的多元醇组分，其中所述聚醚多元醇还包含阻燃聚醚多元醇，所述阻燃聚醚多元醇占聚醚多元醇总重量的0重量％至40重量％，优选5重量％至20重量％。10. The polyol component according to claim 8, wherein the polyether polyol further comprises a flame retardant polyether polyol, and the flame retardant polyether polyol accounts for 0 wt% to 40 wt%, preferably 5 wt% to 20 wt%, based on the total weight of the polyether polyol. 11.一种灌封组合物，其通过使至少以下组分反应获得：11. A potting composition obtained by reacting at least the following components: 异氰酸酯组分，其包含：An isocyanate component comprising: (b-1)至少一种异氰酸酯，和(b-1) at least one isocyanate, and (b-2)任选地第二阻燃剂，(b-2) optionally a second flame retardant, 以及根据权利要求1-10中任一项所述的多元醇组分。And a polyol component according to any one of claims 1 to 10. 12.根据权利要求11所述的灌封组合物，其中第二阻燃剂包含选自以下至少一种的液体阻燃剂：间苯二酚双(二苯基)磷酸酯(RDP)、磷酸三(1-氯-2-丙基)酯(TCPP)、磷酸三甲苯酯(TCP)。12. The potting composition according to claim 11, wherein the second flame retardant comprises a liquid flame retardant selected from at least one of resorcinol bis(diphenyl) phosphate (RDP), tris(1-chloro-2-propyl) phosphate (TCPP), and tricresyl phosphate (TCP). 13.根据权利要求11或12所述的灌封组合物，其中第二阻燃剂占异氰酸酯组分总重量的0重量％至40重量％，优选5重量％至35重量％，更优选5重量％至20重量％。13. The potting composition according to claim 11 or 12, wherein the second flame retardant accounts for 0 wt% to 40 wt%, preferably 5 wt% to 35 wt%, more preferably 5 wt% to 20 wt%, based on the total weight of the isocyanate component. 14.根据权利要求11或12所述的灌封组合物，其中多元醇组分和异氰酸酯组分以100:(30-100)、优选100:(40-90)的重量比混合。14. The potting composition according to claim 11 or 12, wherein the polyol component and the isocyanate component are mixed in a weight ratio of 100:(30-100), preferably 100:(40-90). 15.根据权利要求11或12所述的灌封组合物，其中在25℃的温度下，多元醇组分和异氰酸酯组分混合后根据ASTM D2196-15测量的初始粘度低于7000mPa·s，优选低于5000mPa·s。15. The potting composition according to claim 11 or 12, wherein the initial viscosity of the polyol component and the isocyanate component after mixing at a temperature of 25°C measured according to ASTM D2196-15 is lower than 7000 mPa·s, preferably lower than 5000 mPa·s. 16.由权利要求11至15中任一项所述的灌封组合物制备的聚氨酯泡沫。16. A polyurethane foam prepared from the potting composition according to any one of claims 11 to 15. 17.根据权利要求16所述的聚氨酯泡沫，其中聚氨酯泡沫具有根据ISO1798测量的小于25MPa，优选小于20MPa，更优选小于10MPa的模量。17. The polyurethane foam according to claim 16, wherein the polyurethane foam has a modulus measured according to ISO 1798 of less than 25 MPa, preferably less than 20 MPa, more preferably less than 10 MPa. 18.根据权利要求16所述的聚氨酯泡沫，其中聚氨酯泡沫具有根据UL 94试验测量的至少V2或更高等级的阻燃性，更优选至少V1或更高等级的阻燃性，最优选V0等级的阻燃性。18. The polyurethane foam according to claim 16, wherein the polyurethane foam has a flame retardancy of at least V2 or higher, more preferably at least V1 or higher, and most preferably V0, measured according to UL 94 test. 19.根据权利要求16所述的聚氨酯泡沫，其中聚氨酯泡沫的密度为0.1-0.4g/cm3，优选为0.2-0.3g/cm3。19. The polyurethane foam according to claim 16, wherein the density of the polyurethane foam is 0.1-0.4 g/ cm3 , preferably 0.2-0.3 g/ cm3 . 20.电池制品，包括：20. Battery products, including: 电池单元；和battery cells; and 位于所述电池单元之间的聚氨酯泡沫，其根据权利要求11至15中任一项所述的灌封组合物制备。The polyurethane foam located between the battery cells is prepared according to the potting composition according to any one of claims 11 to 15.
CN202410008183.5A 2024-01-03 2024-01-03 Polyol component, potting composition containing the polyol component, polyurethane foam and battery product Pending CN120248261A (en)

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