CN114350077A - Preparation method of flame-retardant environment-friendly polypropylene plastic particles - Google Patents
Preparation method of flame-retardant environment-friendly polypropylene plastic particles Download PDFInfo
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- CN114350077A CN114350077A CN202210054766.2A CN202210054766A CN114350077A CN 114350077 A CN114350077 A CN 114350077A CN 202210054766 A CN202210054766 A CN 202210054766A CN 114350077 A CN114350077 A CN 114350077A
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- 239000004743 Polypropylene Substances 0.000 title claims abstract description 66
- 239000004033 plastic Substances 0.000 title claims abstract description 65
- 229920003023 plastic Polymers 0.000 title claims abstract description 65
- -1 polypropylene Polymers 0.000 title claims abstract description 65
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 65
- 239000002245 particle Substances 0.000 title claims abstract description 45
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 239000003063 flame retardant Substances 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims description 46
- 238000003756 stirring Methods 0.000 claims description 40
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims description 28
- 239000003242 anti bacterial agent Substances 0.000 claims description 16
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 16
- 239000002270 dispersing agent Substances 0.000 claims description 16
- 238000001125 extrusion Methods 0.000 claims description 16
- 239000004014 plasticizer Substances 0.000 claims description 16
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 14
- 239000000347 magnesium hydroxide Substances 0.000 claims description 14
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 8
- 239000012535 impurity Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 239000003381 stabilizer Substances 0.000 claims description 6
- LXOSIKJOJKJHIF-UHFFFAOYSA-N [Sb].SC(C(=O)OCCCCCC(C)C)(S)S Chemical group [Sb].SC(C(=O)OCCCCCC(C)C)(S)S LXOSIKJOJKJHIF-UHFFFAOYSA-N 0.000 claims description 2
- 239000002994 raw material Substances 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 2
- WMRPRANUDCODRL-UHFFFAOYSA-N CC(C)CCCCCOC(=O)C(S)(S)S Chemical compound CC(C)CCCCCOC(=O)C(S)(S)S WMRPRANUDCODRL-UHFFFAOYSA-N 0.000 description 12
- 239000000047 product Substances 0.000 description 7
- 238000001914 filtration Methods 0.000 description 6
- 239000008187 granular material Substances 0.000 description 6
- 239000008188 pellet Substances 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- PGRNEGLBSNLPNP-UHFFFAOYSA-N 1,6-dichloro-3-methylhex-1-ene Chemical compound ClC=CC(C)CCCCl PGRNEGLBSNLPNP-UHFFFAOYSA-N 0.000 description 1
- 229920000426 Microplastic Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920000891 common polymer Polymers 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
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- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention discloses a preparation method of flame-retardant environment-friendly polypropylene plastic particles, which comprises the following steps: step one, step two and step three. The preparation method of the flame-retardant environment-friendly polypropylene plastic particle has simple production steps, so that the production of the polypropylene plastic particle is convenient, the plastic particle produced by the method has flame-retardant capability, so that the plastic particle is prevented from burning, and the raw material is prepared from the modified polypropylene, so that the bonding force with the flame retardant is enhanced, the effect is stronger, and then the plastic product prepared by the method has better flame retardance, is more environment-friendly and is more convenient to use.
Description
Technical Field
The invention relates to the technical field, in particular to a preparation method of flame-retardant environment-friendly polypropylene plastic particles.
Background
Plastic particles are the common name for plastic granules, and are the raw material for storing, transporting and processing plastic in the form of semi-finished products. Plastics are a kind of high molecular material, and can be used to prepare ethylene, propylene, vinyl chloride, styrene, etc. by using petroleum as raw material, and the molecules of these substances can react with each other under a certain condition to produce compounds with very large molecular weight, i.e. high molecules.
Polypropylene, PP for short, is a semi-crystalline thermoplastic. Has high impact resistance, high mechanical property and high resistance to corrosion of various organic solvents and acid and alkali. It is widely used in industry and is one of the common polymer materials. Australian coins are also made from polypropylene.
However, the existing polypropylene plastic particles have the following problems in the manufacturing process, such as;
the existing children toys are made of polypropylene plastic particles, but the existing polypropylene plastic particles are not environment-friendly enough in the manufacturing process, and the children toys are easy to pollute the environment when being discarded, so that the children toys are inconvenient to use, do not have flame retardance, and cause easy fire catching, thereby being not convenient enough.
Therefore, we propose a method for preparing flame-retardant and environment-friendly polypropylene plastic particles so as to solve the problems set forth above.
Disclosure of Invention
The invention aims to provide a preparation method of flame-retardant environment-friendly polypropylene plastic particles, which aims to solve the problems that the existing children toys are made of the polypropylene plastic particles in some ways, but the existing polypropylene plastic particles are not environment-friendly enough in the manufacturing process, and the children toys are easy to pollute the environment when being discarded, so that the children toys are inconvenient to use and are not provided with flame retardance, so that fire is easy to catch, and the children toys are not convenient enough.
In order to achieve the purpose, the invention provides the following technical scheme: a preparation method of flame-retardant environment-friendly polypropylene plastic particles comprises the following steps:
the method comprises the following steps: adding the modified polypropylene, the talcum powder, the plastic and the dispersing agent into a mixer, uniformly stirring, then adding the flame retardant, the stabilizer and the antibacterial agent, and then stirring.
Step two: and (5) putting the mixture obtained in the step two into a double-screw extrusion granulator for blending, extruding and granulating, and then obtaining the polypropylene plastic particles.
Step three: the working device is cleaned for the next use.
Preferably, 100-150 parts of modified polypropylene, 20-25 parts of talcum powder, 30-40 parts of plastic, 1-5 parts of flame retardant, 10-20 parts of stabilizer, 10-20 parts of dispersant, 1-5 parts of antibacterial agent and 20-30 parts of plasticizer.
Preferably, the temperature of the mixer during the first stirring in the step one is 150-.
Preferably, the temperature of the mixer during the second stirring in the first step is 130-.
Preferably, the stabilizer is isooctyl trimercaptoacetate antimony.
Preferably, the flame retardant is a mixture of antimony trioxide and magnesium hydroxide in a weight ratio of 3: 4.
Preferably, the plasticizer is filtered by a filter screen before use, so as to filter mechanical impurities or black garbage.
Preferably, the temperature of the twin-screw extrusion granulator in the second step is 160-170 ℃.
Preferably, the mixture obtained in the second step needs to be stirred at a low speed in a cooling stirrer for 20-30 min.
Compared with the prior art, the invention has the beneficial effects that: a preparation method of the flame-retardant environment-friendly polypropylene plastic particle;
the manufacturing method has simple production steps, so that the production of the plastic particles is convenient, the plastic particles produced by the method have flame retardant capability, so that the plastic particles are prevented from burning, the raw material is made of modified polypropylene, so that the bonding force with the flame retardant is enhanced, the effect is stronger, the plastic product manufactured by the method has better flame retardant property, and the polypropylene plastic particles are more environment-friendly and more convenient to use.
Detailed Description
The following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
The invention provides a technical scheme that: a preparation method of flame-retardant environment-friendly polypropylene plastic particles is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: adding the modified polypropylene, the talcum powder, the plastic and the dispersing agent into a mixer, stirring uniformly, the modified polypropylene is required to be filtered by a filter screen when being added into the mixer, the filtering holes of the filter screen are only required to be slightly larger than the diameter of the resin, meanwhile, the temperature of the mixer is 150 ℃ during stirring, the stirring time is 10min, and the rotating speed is 150r/min, then a mixture of antimony trioxide and magnesium hydroxide with the weight component ratio of 3:4, isooctyl trimercaptoacetate and an antibacterial agent are added, and then the mixture is stirred, the temperature of a mixer is 130 ℃ while the mixture is stirred, and the stirring time is 5min, the rotating speed is 300r/min, the plasticizer needs to be filtered by a filter screen before use, mechanical impurities or black garbage are filtered out, the product performance is prevented from being influenced, and the raw materials in parts by weight are as follows: 100 parts of modified polypropylene, 20 parts of talcum powder, 30 parts of plastic, 1 part of a mixture of antimony trioxide and magnesium hydroxide in a weight ratio of 3:4, 10 parts of isooctyl trimercaptoacetate, 10 parts of a dispersing agent, 1 part of an antibacterial agent and 20 parts of a plasticizer.
Step two: and (3) stirring the mixture obtained in the step two in a cooling stirrer at a low speed for 20min, then putting the mixture into a double-screw extrusion granulator for blending, extruding and granulating to obtain polypropylene plastic particles, wherein the temperature of the double-screw extrusion granulator is 160 ℃, and the rotating speed of a cutter is adjusted to be 3mm in length of the granules. The screw speed was adjusted to a level where pellets did not stick and the mixture was extruded.
Step three: the working device is cleaned for the next use.
Example two
The invention provides a technical scheme that: a preparation method of flame-retardant environment-friendly polypropylene plastic particles is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: adding the modified polypropylene, the talcum powder, the plastic and the dispersing agent into a mixer, stirring uniformly, the modified polypropylene is required to be filtered by a filter screen when being added into the mixer, the filtering holes of the filter screen are only required to be slightly larger than the diameter of the resin, meanwhile, the temperature of the mixer is 155 ℃ during stirring, the stirring time is 11min, and the rotating speed is 152r/min, then a mixture of antimony trioxide and magnesium hydroxide with the weight ratio of 3:4, isooctyl trimercaptoacetate and an antibacterial agent are added, and then the mixture is stirred, the temperature of a mixer is 132 ℃ while the mixture is stirred, and the stirring time is 6min, the rotating speed is 320r/min, the plasticizer needs to be filtered by a filter screen before use, mechanical impurities or black garbage are filtered out, the product performance is prevented from being influenced, and the raw materials in parts by weight are as follows: 110 parts of modified polypropylene, 21 parts of talcum powder, 32 parts of plastic, 12 parts of a mixture of antimony trioxide and magnesium hydroxide in a weight ratio of 3:4, 12 parts of isooctyl trimercaptoacetate, 12 parts of a dispersing agent, 12 parts of an antibacterial agent and 22 parts of a plasticizer.
Step two: and (3) stirring the mixture obtained in the step two in a cooling stirrer at a low speed for 22min, then putting the mixture into a double-screw extrusion granulator for blending, extruding and granulating to obtain polypropylene plastic particles, wherein the temperature of the double-screw extrusion granulator is 162 ℃, and the rotating speed of a cutter is adjusted to be 3mm in length of the granules. The screw speed was adjusted to a level where pellets did not stick and the mixture was extruded.
Step three: the working device is cleaned for the next use.
EXAMPLE III
The invention provides a technical scheme that: a preparation method of flame-retardant environment-friendly polypropylene plastic particles is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: adding the modified polypropylene, the talcum powder, the plastic and the dispersing agent into a mixer, stirring uniformly, the modified polypropylene is required to be filtered by a filter screen when being added into the mixer, the filtering holes of the filter screen are only required to be slightly larger than the diameter of the resin, meanwhile, the temperature of the mixer is 165 ℃ during stirring, the stirring time is 13min, and the rotating speed is 154r/min, then a mixture of antimony trioxide and magnesium hydroxide with the weight component ratio of 3:4, isooctyl trimercaptoacetate and an antibacterial agent are added, and then the mixture is stirred, the temperature of a mixer is 134 ℃ while the mixture is stirred, and the stirring time is 7min, the rotating speed is 340r/min, the plasticizer needs to be filtered by a filter screen before use, mechanical impurities or black garbage are filtered out, the product performance is prevented from being influenced, and the raw materials in parts by weight are as follows: 130 parts of modified polypropylene, 23 parts of talcum powder, 34 parts of plastic, 3 parts of a mixture of antimony trioxide and magnesium hydroxide in a weight ratio of 3:4, 14 parts of isooctyl trimercaptoacetate, 14 parts of a dispersing agent, 3 parts of an antibacterial agent and 24 parts of a plasticizer.
Step two: and (3) stirring the mixture obtained in the second step in a cooling stirrer at a low speed for 24min, then putting the mixture into a double-screw extrusion granulator for blending, extruding and granulating to obtain polypropylene plastic particles, wherein the temperature of the double-screw extrusion granulator is 164 ℃, and the rotating speed of a cutter is adjusted to be 3mm in length of the granules. The screw speed was adjusted to a level where pellets did not stick and the mixture was extruded.
Step three: the working device is cleaned for the next use.
Example four
The invention provides a technical scheme that: a preparation method of flame-retardant environment-friendly polypropylene plastic particles is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: adding the modified polypropylene, the talcum powder, the plastic and the dispersing agent into a mixer, stirring uniformly, the modified polypropylene is required to be filtered by a filter screen when being added into the mixer, the filtering holes of the filter screen are only required to be slightly larger than the diameter of the resin, meanwhile, the temperature of the mixer is 160 ℃ during stirring, the stirring time is 13min, and the rotating speed is 156r/min, then a mixture of antimony trioxide and magnesium hydroxide with the weight component ratio of 3:4, isooctyl trimercaptoacetate and an antibacterial agent are added, and then the mixture is stirred, the temperature of a mixer is 136 ℃ while the mixture is stirred, and the stirring time is 8min, the rotating speed is 360r/min, the plasticizer needs to be filtered by a filter screen before use, mechanical impurities or black garbage are filtered, the product performance is prevented from being influenced, and the raw materials in parts by weight are as follows: 130 parts of modified polypropylene, 23 parts of talcum powder, 36 parts of plastic, 3 parts of a mixture of antimony trioxide and magnesium hydroxide in a weight ratio of 3:4, 16 parts of isooctyl trimercaptoacetate, 16 parts of a dispersing agent, 3 parts of an antibacterial agent and 26 parts of a plasticizer.
Step two: and (3) stirring the mixture obtained in the second step in a cooling stirrer at a low speed for 26min, and then putting the mixture into a double-screw extrusion granulator for blending, extruding and granulating to obtain polypropylene plastic particles, wherein the temperature of the double-screw extrusion granulator is 166 ℃, and the rotating speed of a cutter is adjusted to be 4mm in length of the granules. The screw speed was adjusted to a level where pellets did not stick and the mixture was extruded.
Step three: the working device is cleaned for the next use.
EXAMPLE five
The invention provides a technical scheme that: a preparation method of flame-retardant environment-friendly polypropylene plastic particles is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: adding the modified polypropylene, the talcum powder, the plastic and the dispersing agent into a mixer, stirring uniformly, the modified polypropylene is required to be filtered by a filter screen when being added into the mixer, the filtering holes of the filter screen are only required to be slightly larger than the diameter of the resin, while the temperature of the mixer during stirring was 175 ℃ and the stirring time was 14min, and the rotating speed is 158r/min, then a mixture of antimony trioxide and magnesium hydroxide with the weight component ratio of 3:4, isooctyl trimercaptoacetate and an antibacterial agent are added, and then the mixture is stirred, the temperature of a mixer is 138 ℃ while the mixture is stirred, and the stirring time is 9min, the rotating speed is 380r/min, the plasticizer needs to be filtered by a filter screen before use, mechanical impurities or black garbage are filtered out, the product performance is prevented from being influenced, and the raw materials in parts by weight are as follows: 140 parts of modified polypropylene, 24 parts of talcum powder, 38 parts of plastic, 4 parts of a mixture of antimony trioxide and magnesium hydroxide in a weight ratio of 3:4, 18 parts of isooctyl trimercaptoacetate, 18 parts of a dispersing agent, 4 parts of an antibacterial agent and 28 parts of a plasticizer.
Step two: and (3) stirring the mixture obtained in the second step in a cooling stirrer at a low speed for 28min, and then putting the mixture into a double-screw extrusion granulator for blending, extruding and granulating to obtain polypropylene plastic particles, wherein the temperature of the double-screw extrusion granulator is 168 ℃, and the rotating speed of a cutter is adjusted to be 4mm in length of the granules. The screw speed was adjusted to a level where pellets did not stick and the mixture was extruded.
Step three: the working device is cleaned for the next use.
EXAMPLE six
The invention provides a technical scheme that: a preparation method of flame-retardant environment-friendly polypropylene plastic particles is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: adding the modified polypropylene, the talcum powder, the plastic and the dispersing agent into a mixer, stirring uniformly, the modified polypropylene is required to be filtered by a filter screen when being added into the mixer, the filtering holes of the filter screen are only required to be slightly larger than the diameter of the resin, meanwhile, the temperature of the mixer is 180 ℃ during stirring, the stirring time is 10-15min, and the rotating speed is 160r/min, then a mixture of antimony trioxide and magnesium hydroxide with the weight ratio of 3:4, isooctyl trimercaptoacetate and an antibacterial agent are added and stirred, meanwhile, the temperature of the mixer is 140 ℃ during stirring, the stirring time is 10min, the rotating speed is 400r/min, the plasticizer needs to be filtered by a filter screen before use, mechanical impurities or black garbage are filtered out, the product performance is prevented from being influenced, and the raw materials in parts by weight are as follows: 150 parts of modified polypropylene, 25 parts of talcum powder, 40 parts of plastic, 5 parts of a mixture of antimony trioxide and magnesium hydroxide in a weight ratio of 3:4, 20 parts of isooctyl trimercaptoacetate, 20 parts of a dispersing agent, 5 parts of an antibacterial agent and 30 parts of a plasticizer.
Step two: and (3) stirring the mixture obtained in the step two in a cooling stirrer at a low speed for 30min, then putting the mixture into a double-screw extrusion granulator for blending, extruding and granulating to obtain polypropylene plastic particles, wherein the temperature of the double-screw extrusion granulator is 170 ℃, and the rotating speed of a cutter is adjusted to be 4mm in length of the granules. The screw speed was adjusted to a level where pellets did not stick and the mixture was extruded.
Step three: the working device is cleaned for the next use.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (9)
1. A preparation method of flame-retardant environment-friendly polypropylene plastic particles is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: adding the modified polypropylene, the talcum powder, the plastic and the dispersing agent into a mixer, uniformly stirring, then adding the flame retardant, the stabilizer and the antibacterial agent, and then stirring.
Step two: and (5) putting the mixture obtained in the step two into a double-screw extrusion granulator for blending, extruding and granulating, and then obtaining the polypropylene plastic particles.
Step three: the working device is cleaned for the next use.
2. The preparation method of the flame-retardant environment-friendly polypropylene plastic particle as claimed in claim 1, wherein the preparation method comprises the following steps: 100-150 parts of modified polypropylene, 20-25 parts of talcum powder, 30-40 parts of plastic, 1-5 parts of flame retardant, 10-20 parts of stabilizer, 10-20 parts of dispersant, 1-5 parts of antibacterial agent and 20-30 parts of plasticizer.
3. The preparation method of the flame-retardant environment-friendly polypropylene plastic particle as claimed in claim 1, wherein the preparation method comprises the following steps: the temperature of the mixer during the first stirring in the step one is 150-.
4. The preparation method of the flame-retardant environment-friendly polypropylene plastic particle as claimed in claim 1, wherein the preparation method comprises the following steps: the temperature of the mixer during the second stirring in the first step is 130-.
5. The preparation method of the flame-retardant environment-friendly polypropylene plastic particle as claimed in claim 1, wherein the preparation method comprises the following steps: the stabilizer is isooctyl trimercaptoacetate antimony.
6. The preparation method of the flame-retardant environment-friendly polypropylene plastic particle as claimed in claim 1, wherein the preparation method comprises the following steps: the flame retardant is a mixture of antimony trioxide and magnesium hydroxide in a weight ratio of 3: 4.
7. The preparation method of the flame-retardant environment-friendly polypropylene plastic particle as claimed in claim 1, wherein the preparation method comprises the following steps: the plasticizer is required to be filtered through a filter screen before use, and mechanical impurities or black garbage are filtered out.
8. The preparation method of the flame-retardant environment-friendly polypropylene plastic particle as claimed in claim 1, wherein the preparation method comprises the following steps: the temperature of the double-screw extrusion granulator in the second step is 160-170 ℃.
9. The preparation method of the flame-retardant environment-friendly polypropylene plastic particle as claimed in claim 1, wherein the preparation method comprises the following steps: and stirring the mixture obtained in the second step for 20-30min at a low speed in a cooling stirrer.
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| CN202210054766.2A CN114350077A (en) | 2022-01-18 | 2022-01-18 | Preparation method of flame-retardant environment-friendly polypropylene plastic particles |
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| CN107189228A (en) * | 2017-07-20 | 2017-09-22 | 王德秀 | A kind of polypropylene anti-bacterial plastic and preparation method thereof |
| CN108239334A (en) * | 2016-12-23 | 2018-07-03 | 慈溪清泉电器有限公司 | A kind of formula of polypropylene plastics particle |
| CN108239352A (en) * | 2016-12-23 | 2018-07-03 | 慈溪清泉电器有限公司 | A kind of preparation method of Antibacterial flame retardant plastic particle |
| CN108239333A (en) * | 2016-12-23 | 2018-07-03 | 慈溪清泉电器有限公司 | A kind of preparation method of polypropylene plastics particle |
-
2022
- 2022-01-18 CN CN202210054766.2A patent/CN114350077A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108239334A (en) * | 2016-12-23 | 2018-07-03 | 慈溪清泉电器有限公司 | A kind of formula of polypropylene plastics particle |
| CN108239352A (en) * | 2016-12-23 | 2018-07-03 | 慈溪清泉电器有限公司 | A kind of preparation method of Antibacterial flame retardant plastic particle |
| CN108239333A (en) * | 2016-12-23 | 2018-07-03 | 慈溪清泉电器有限公司 | A kind of preparation method of polypropylene plastics particle |
| CN107189228A (en) * | 2017-07-20 | 2017-09-22 | 王德秀 | A kind of polypropylene anti-bacterial plastic and preparation method thereof |
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Application publication date: 20220415 |