CN111961333A - Preparation formula of polyurethane foaming product based on graphite material - Google Patents

Preparation formula of polyurethane foaming product based on graphite material Download PDF

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Publication number
CN111961333A
CN111961333A CN202010891325.9A CN202010891325A CN111961333A CN 111961333 A CN111961333 A CN 111961333A CN 202010891325 A CN202010891325 A CN 202010891325A CN 111961333 A CN111961333 A CN 111961333A
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China
Prior art keywords
polyurethane foaming
parts
heat conducting
insulating
heat
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CN202010891325.9A
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Chinese (zh)
Inventor
陈峻
崔青天
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Ningbo Yaozhong Molding Technology Co ltd
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Ningbo Yaozhong Molding Technology Co ltd
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Priority to CN202010891325.9A priority Critical patent/CN111961333A/en
Publication of CN111961333A publication Critical patent/CN111961333A/en
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    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/36—After-treatment
    • C08J9/365—Coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/32—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed at least two layers being foamed and next to each other
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Abstract

The invention discloses a preparation formula of a polyurethane foaming product based on a graphite material, wherein a conductive and heat conductive material, namely an insulating and heat conductive material, is added into a polyurethane foaming raw material to improve the heat conductivity and the parallel electrical conductivity of the polyurethane foaming product, the adjustment of the heat conductivity and the electrical conductivity is realized by changing the number of layers of the conductive and heat conductive material in the production process, the product is not required to be subjected to component transformation, the production is convenient, graphite fibers are used as main reinforced fibers, the carbon content of the material is greatly improved, the mechanical property is better, titanium dioxide and light-reflecting coating are added into the polyurethane foaming raw material to improve the reflectivity of the product to infrared rays, so that the temperature of the inner side and the outer side of the polyurethane foaming product is isolated, the heat preservation and insulation effect is better, the added light-reflecting pigment can reflect ultraviolet rays, the photochemical reaction of the polyurethane foaming product in a long-term, the service life of the product is prolonged.

Description

Preparation formula of polyurethane foaming product based on graphite material
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a preparation formula of a polyurethane foaming product based on a graphite material.
Background
Polyurethane foam products are products made of polyurethane rigid foam, the polyurethane rigid foam is a high molecular polymer which is prepared by taking isocyanate and polyether as main raw materials, mixing the raw materials through special equipment under the action of various auxiliary agents such as a foaming agent, a catalyst, a flame retardant and the like, and foaming on site through high-pressure spraying.
Disclosure of Invention
The invention aims to provide a preparation formula of a polyurethane foaming product based on a graphite material, which is convenient to produce, has better heat preservation and insulation effects, can prevent the polyurethane foaming product from undergoing a photochemical reaction in a long-term solarization state, and prolongs the service life of the product, so as to solve the problems that the photochemical reaction is easily generated inside the polyurethane foaming product due to the long-term solarization in the use process of the polyurethane foaming product, thereby reducing the strength of the material and influencing the service life of the material.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation formula of a polyurethane foaming product based on a graphite material comprises the following components in parts by weight: 30-50 parts of resin base material, 30-50 parts of polyether, 2-5 parts of catalyst, 10-20 parts of flame retardant, 10-15 parts of reinforced fiber, 2-5 parts of auxiliary additive, 0-8 parts of conductive and heat-conductive material, 0-8 parts of insulating and heat-conductive material, 0-8 parts of titanium dioxide and 0-8 parts of light-reflecting coating.
Preferably, the resin binder is formed by mixing isocyanate and one or more of polypropylene, polyethylene, polymethyl methacrylate, polycarbonate, nylon 66 and polystyrene.
Preferably, the reinforcing fiber is formed by interweaving graphite fiber and one or more of attapulgite, sepiolite, calcium carbonate, quartz sand, whisker and silicon dioxide after soaking the graphite fiber and the blend in a cellulose solution, the diameter of the graphite fiber is 10-30 mu m, the diameter of the blend is 3-10 mu m, and the cellulose solution is a hydroxyethyl cellulose solution or an ethyl-2-hydroxyethyl cellulose solution.
Preferably, the electrically and thermally conductive material is a blend of graphene, carbon nanotubes and copper.
Preferably, the insulating and heat conducting material is one or a mixture of titanium carbide, zirconium carbide, tungsten carbide, silicon nitride, aluminum oxide and zinc oxide.
Preferably, the titanium dioxide is nano rutile titanium dioxide with the content of 68%.
The invention also provides a preparation method of the polyurethane foaming product preparation formula based on the graphite material, which comprises the following steps:
s1, putting the resin base material and the polymer into a reaction kettle, reacting under the protection of nitrogen, sequentially adding a catalyst, a flame retardant, a reinforcing fiber and an auxiliary additive, and uniformly stirring to generate a polyurethane foaming raw material;
s2, mixing the polyurethane foaming raw material formed in the S1 with an electric and heat conducting material to generate an electric and heat conducting raw material, carrying out vacuum drying treatment on the electric and heat conducting raw material for later use, mixing the polyurethane foaming raw material formed in the S1 with an insulating and heat conducting material to generate an insulating and heat conducting raw material, and carrying out drying treatment on the insulating and heat conducting raw material for later use;
s3, extruding and granulating the electric and heat conducting raw materials and the insulating and heat conducting raw materials generated in the step S2 by using a double-screw extruder to form a premix, and drying the premix;
s4, respectively filling the electric and heat conducting premix and the insulating and heat conducting premix into two groups of extruders to be sequentially melted and extruded, enabling the extruded premixes to fall into a die to form a laminated polyurethane foaming original die, wherein the extrusion thicknesses of the electric and heat conducting premix and the insulating and heat conducting premix are the same;
s5, mixing the titanium dioxide and the light reflection coating uniformly in a high-speed stirrer, loading the mixture into another group of extruders, and extruding the mixture onto the surface of a polyurethane foaming original mold in a laminated state;
and S6, cooling and demolding the finished product in the S5 to obtain a polyurethane foamed product.
Preferably, the insulating and heat-conducting premix is positioned on the upper surface and the lower surface of the polyurethane foaming master mould.
The invention provides a preparation formula of a polyurethane foaming product based on a graphite material, wherein the polyurethane foaming raw material is added with an electric and heat conducting material, namely an insulating and heat conducting material, so that the heat conductivity and the parallel electric conductivity of the polyurethane foaming product are improved, the adjustment of the heat conductivity and the electric conductivity is realized by changing the number of layers of the electric and heat conducting material, the product is not required to be subjected to component transformation, the production is convenient, the graphite fiber is used as a main reinforced fiber, the carbon content of the material is greatly improved, the mechanical property is better, the titanium dioxide and a light-reflecting coating are added into the polyurethane foaming raw material, the reflectivity of the product to infrared light is improved, so that the temperature of the inner side and the outer side of the polyurethane foaming product is isolated, the heat preservation and insulation effects are better, the added light-reflecting pigment can reflect ultraviolet rays, the photochemical reaction of the polyurethane foaming product in a, the service life of the product is prolonged.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
A preparation formula of a polyurethane foaming product based on a graphite material comprises the following components in parts by weight: 30 parts of resin base material, 30 parts of polyether, 2 parts of catalyst, 10 parts of flame retardant, 10 parts of reinforcing fiber, 3 parts of auxiliary additive, 4 parts of conductive and heat conductive material, 4 parts of insulating and heat conductive material, 4 parts of titanium dioxide and 3 parts of light reflection coating, wherein the resin base material can be prepared by mixing isocyanate and one or more blends of polypropylene, polyethylene, polymethyl methacrylate, polycarbonate, nylon 66 and polystyrene, the reinforcing fiber is prepared by soaking one or more blends of graphite fiber, attapulgite, sepiolite, calcium carbonate, quartz sand, whisker and silicon dioxide in a cellulose solution and then interweaving the blends, the diameter of the graphite fiber is 10-30 mu m, the diameter of the blends is 3-10 mu m, the cellulose solution is hydroxyethyl cellulose solution or ethyl-2-hydroxyethyl cellulose solution, and the conductive and heat conductive material is graphene, The carbon nano tube and copper blend, the insulating heat conduction material is one or more blends of titanium carbide, zirconium carbide, tungsten carbide, silicon nitride, aluminum oxide and zinc oxide, and the titanium dioxide is 68 percent of nano rutile titanium dioxide.
Example 2
A preparation formula of a polyurethane foaming product based on a graphite material comprises the following components in parts by weight: 30 parts of resin base material, 30 parts of polyether, 2 parts of catalyst, 10 parts of flame retardant, 10 parts of reinforcing fiber, 3 parts of auxiliary additive, 8 parts of insulating heat conduction material, 4 parts of titanium dioxide and 3 parts of light reflection coating, wherein the resin base material can be prepared by mixing isocyanate and one or more blends of polypropylene, polyethylene, polymethyl methacrylate, polycarbonate, nylon 66 and polystyrene, the reinforcing fiber is prepared by soaking graphite fiber and one or more blends of atapulgite, sepiolite, calcium carbonate, quartz sand, whisker and silicon dioxide in cellulose solution and then interweaving the graphite fiber, the diameter of the graphite fiber is 10-30 mu m, the diameter of the blends is 3-10 mu m, the cellulose solution is hydroxyethyl cellulose solution or ethyl-2-hydroxyethyl cellulose solution, the insulating heat conduction material is titanium carbide, zirconium carbide, One or more blends of tungsten carbide, silicon nitride, aluminum oxide and zinc oxide, and the titanium dioxide is 68 percent of nano rutile type titanium dioxide.
Example 3
A preparation formula of a polyurethane foaming product based on a graphite material comprises the following components in parts by weight: 30 parts of resin base material, 30 parts of polyether, 2 parts of catalyst, 10 parts of flame retardant, 10 parts of reinforcing fiber, 3 parts of auxiliary additive, 8 parts of conductive and heat conductive material, 4 parts of titanium dioxide and 3 parts of light reflection coating, wherein the resin base material can be prepared by mixing isocyanate and one or more blends of polypropylene, polyethylene, polymethyl methacrylate, polycarbonate, nylon 66 and polystyrene, the reinforcing fiber is prepared by soaking and interweaving graphite fiber and one or more blends of atapulgite, sepiolite, calcium carbonate, quartz sand, whisker and silicon dioxide in cellulose solution, the diameter of the graphite fiber is 10-30 mu m, the diameter of the blend is 3-10 mu m, the cellulose solution is hydroxyethyl cellulose solution or ethyl-2-hydroxyethyl cellulose solution, the conductive and heat conductive material is a blend of graphene, carbon nano tube and copper, the titanium dioxide is nano rutile type titanium dioxide with the content of 68 percent.
Example 4
A preparation formula of a polyurethane foaming product based on a graphite material comprises the following components in parts by weight: 30 parts of resin base material, 30 parts of polyether, 2 parts of catalyst, 10 parts of flame retardant, 10 parts of reinforcing fiber, 3 parts of auxiliary additive, 6 parts of conductive and heat conductive material, 6 parts of insulating and heat conductive material and 3 parts of light reflective coating, wherein the resin base material can be prepared by mixing isocyanate and one or more blends of polypropylene, polyethylene, polymethyl methacrylate, polycarbonate, nylon 66 and polystyrene, the reinforcing fiber is prepared by soaking and interweaving graphite fiber and one or more blends of attapulgite, sepiolite, calcium carbonate, quartz sand, whisker and silicon dioxide in a cellulose solution, the diameter of the graphite fiber is 10-30 mu m, the diameter of the blend is 3-10 mu m, the cellulose solution is hydroxyethyl cellulose solution or ethyl-2-hydroxyethyl cellulose solution, the conductive and heat conductive material is a blend of graphene, carbon nano tube and copper, the insulating heat conducting material is one or a mixture of more of titanium carbide, zirconium carbide, tungsten carbide, silicon nitride, aluminum oxide and zinc oxide.
Example 5
A preparation formula of a polyurethane foaming product based on a graphite material comprises the following components in parts by weight: 30 parts of resin base material, 30 parts of polyether, 2 parts of catalyst, 10 parts of flame retardant, 10 parts of reinforcing fiber, 3 parts of auxiliary additive, 6 parts of conductive and heat conductive material, 6 parts of insulating and heat conductive material and 3 parts of titanium dioxide, wherein the resin base material can be prepared by mixing isocyanate and one or more blends of polypropylene, polyethylene, polymethyl methacrylate, polycarbonate, nylon 66 and polystyrene, the reinforcing fiber is prepared by soaking and interweaving graphite fiber and one or more blends of attapulgite, sepiolite, calcium carbonate, quartz sand, whisker and silicon dioxide in a cellulose solution, the diameter of the graphite fiber is 10-30 mu m, the diameter of the blend is 3-10 mu m, the cellulose solution is hydroxyethyl cellulose solution or ethyl-2-hydroxyethyl cellulose solution, the conductive and heat conductive material is a blend of graphene, carbon nano tube and copper, the insulating heat conducting material is one or a mixture of titanium carbide, zirconium carbide, tungsten carbide, silicon nitride, aluminum oxide and zinc oxide, and the titanium dioxide is 68% of nano rutile titanium dioxide.
The invention also provides a preparation method of the polyurethane foaming product preparation formula based on the graphite material, which comprises the following steps:
s1, putting the resin base material and the polymer into a reaction kettle, reacting under the protection of nitrogen, sequentially adding a catalyst, a flame retardant, a reinforcing fiber and an auxiliary additive, and uniformly stirring to generate a polyurethane foaming raw material;
s2, mixing the polyurethane foaming raw material formed in the S1 with an electric and heat conducting material to generate an electric and heat conducting raw material, carrying out vacuum drying treatment on the electric and heat conducting raw material for later use, mixing the polyurethane foaming raw material formed in the S1 with an insulating and heat conducting material to generate an insulating and heat conducting raw material, and carrying out drying treatment on the insulating and heat conducting raw material for later use;
s3, extruding and granulating the electric and heat conducting raw materials and the insulating and heat conducting raw materials generated in the step S2 by using a double-screw extruder to form a premix, and drying the premix;
s4, respectively filling the electric and heat conducting premix and the insulating and heat conducting premix into two groups of extruders to be sequentially melted and extruded, enabling the extruded premixes to fall into a die to form a polyurethane foaming master die in a laminated state, wherein the extrusion thicknesses of the electric and heat conducting premix and the insulating and heat conducting premix are the same, and the insulating and heat conducting premix is positioned on the upper surface and the lower surface of the polyurethane foaming master die;
s5, mixing the titanium dioxide and the light reflection coating uniformly in a high-speed stirrer, loading the mixture into another group of extruders, and extruding the mixture onto the surface of a polyurethane foaming original mold in a laminated state;
and S6, cooling and demolding the finished product in the S5 to obtain a polyurethane foamed product.
In summary, the following steps: the formula for preparing the polyurethane foaming product based on the graphite material is characterized in that the electric and heat conducting material and the heat insulating and conducting material are added into the polyurethane foaming raw material, so that the heat conductivity and the parallel conductivity of the polyurethane foaming product are improved, the adjustment of the heat conducting and the electric conducting properties is realized by changing the number of layers of the electric and heat conducting material and the heat insulating and conducting material in the production process, the component transformation of the product is not needed, the production is convenient, the graphite fiber is used as the main reinforced fiber, the carbon content of the material is greatly improved, the mechanical property is better, the titanium dioxide and the light reflecting coating are added into the polyurethane foaming raw material, the reflectivity of the product to infrared light is improved, so that the temperature of the inner side and the outer side of the polyurethane foaming product is isolated, the heat insulation effect is better, the added light reflecting pigment can reflect ultraviolet rays, the photochemical, the service life of the product is prolonged.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (8)

1. A preparation formula of a polyurethane foaming product based on a graphite material is characterized in that: the preparation formula of the polyurethane foaming product based on the graphite material comprises the following components in parts by weight: 30-50 parts of resin base material, 30-50 parts of polyether, 2-5 parts of catalyst, 10-20 parts of flame retardant, 10-15 parts of reinforced fiber, 2-5 parts of auxiliary additive, 0-8 parts of conductive and heat-conductive material, 0-8 parts of insulating and heat-conductive material, 0-8 parts of titanium dioxide and 0-8 parts of light-reflecting coating.
2. The preparation formula of the polyurethane foaming product based on the graphite material, according to the claim 1, is characterized in that: the resin base material can be prepared by mixing isocyanate and one or more of polypropylene, polyethylene, polymethyl methacrylate, polycarbonate, nylon 66 and polystyrene.
3. The preparation formula of the polyurethane foaming product based on the graphite material, according to the claim 1, is characterized in that: the reinforced fiber is formed by interweaving graphite fiber and one or more of attapulgite, sepiolite, calcium carbonate, quartz sand, crystal whisker and silicon dioxide after soaking the mixture by a cellulose solution, wherein the diameter of the graphite fiber is 10-30 mu m, the diameter of the mixture is 3-10 mu m, and the cellulose solution is hydroxyethyl cellulose solution or ethyl-2-hydroxyethyl cellulose solution.
4. The preparation formula of the polyurethane foaming product based on the graphite material, according to the claim 1, is characterized in that: the conductive and heat-conductive material is a blend of graphene, carbon nanotubes and copper.
5. The preparation formula of the polyurethane foaming product based on the graphite material, according to the claim 1, is characterized in that: the insulating heat conduction material is one or a mixture of more of titanium carbide, zirconium carbide, tungsten carbide, silicon nitride, aluminum oxide and zinc oxide.
6. The preparation formula of the polyurethane foaming product based on the graphite material, according to the claim 1, is characterized in that: the titanium dioxide is nano rutile titanium dioxide with the content of 68 percent.
7. A method for preparing the formulation for preparing polyurethane foamed products based on graphite materials according to claim 1, which comprises the following steps: the method comprises the following steps:
s1, putting the resin base material and the polymer into a reaction kettle, reacting under the protection of nitrogen, sequentially adding a catalyst, a flame retardant, a reinforcing fiber and an auxiliary additive, and uniformly stirring to generate a polyurethane foaming raw material;
s2, mixing the polyurethane foaming raw material formed in the S1 with an electric and heat conducting material to generate an electric and heat conducting raw material, carrying out vacuum drying treatment on the electric and heat conducting raw material for later use, mixing the polyurethane foaming raw material formed in the S1 with an insulating and heat conducting material to generate an insulating and heat conducting raw material, and carrying out drying treatment on the insulating and heat conducting raw material for later use;
s3, extruding and granulating the electric and heat conducting raw materials and the insulating and heat conducting raw materials generated in the step S2 by using a double-screw extruder to form a premix, and drying the premix;
s4, respectively filling the electric and heat conducting premix and the insulating and heat conducting premix into two groups of extruders to be sequentially melted and extruded, enabling the extruded premixes to fall into a die to form a laminated polyurethane foaming original die, wherein the extrusion thicknesses of the electric and heat conducting premix and the insulating and heat conducting premix are the same;
s5, mixing the titanium dioxide and the light reflection coating uniformly in a high-speed stirrer, loading the mixture into another group of extruders, and extruding the mixture onto the surface of a polyurethane foaming original mold in a laminated state;
and S6, cooling and demolding the finished product in the S5 to obtain a polyurethane foamed product.
8. The method for preparing a formulation for preparing polyurethane foam products based on graphite material as claimed in claim 7, wherein: the insulating heat-conducting premix is positioned on the upper surface and the lower surface of the polyurethane foaming master mould.
CN202010891325.9A 2020-08-30 2020-08-30 Preparation formula of polyurethane foaming product based on graphite material Pending CN111961333A (en)

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