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Preparation for flame-retardant polystyrene copolymer

A technology of polystyrene and copolymers, which is applied in the field of preparation of flame-retardant polystyrene copolymers, can solve problems such as foam shrinkage and collapse, flame retardants cannot be uniformly dispersed, and poor compatibility, so as to increase flame retardancy, Prevents foam shrinkage and collapse and improves heat resistance

Inactive Publication Date: 2016-04-06
王金明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The flame-retardant expandable polystyrene products of the above patents and known technologies are all modified by introducing a flame retardant during polymerization, but because the flame retardant cannot be dispersed uniformly in the polymerization system, the compatibility with styrene monomer is poor. Prone foam shrinkage and collapse affect the performance of flame retardant expandable polystyrene products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Step 1. Preparation of water phase

[0020] In a 2 cubic meter reactor, add 800Kg of pure water and 2Kg of polyvinyl alcohol, and stir evenly.

[0021] Step 2. Preparation of oil phase

[0022] In a 1 cubic meter reactor, add 100Kg styrene monomer, 10Kg perfluorobutyl ethylene, 3Kg poly(propylene glycol) 4-nonylphenylene ether acrylic acid, 1Kg dimethyl diallyl ammonium chloride, 0.3Kg white oil, 0.3Kg polyethylene wax, and then add 0.2Kg benzoyl peroxide, and stir evenly.

[0023] Step 3. Polymerization

[0024] Add the prepared oil phase solution into the reaction kettle equipped with the prepared water phase in step 1, react at 90°C for 12 hours, remove residual monomers by vacuum desorption after the reaction, and filter out the material. get the product. Numbered M-1

Embodiment 2

[0026] Step 1. Preparation of water phase

[0027] In a 2 cubic meter reactor, add 500Kg of pure water and 0.5Kg of polyvinyl alcohol, and stir evenly.

[0028] Step 2. Preparation of oil phase

[0029] In a 1 cubic meter reactor, add 100Kg styrene monomer, 5Kg perfluorobutyl ethylene, 1Kg poly(propylene glycol) 4-nonylphenylene ether acrylic acid, 0.5Kg dimethyl diallyl ammonium chloride, 0.1Kg Add white oil, 0.1Kg polyethylene wax, and 0.05Kg benzoyl peroxide, and stir evenly.

[0030] Step 3. Polymerization

[0031] Add the prepared oil phase solution into the reaction kettle equipped with the prepared water phase in step 1, and react at 100°C for 10 hours. After the reaction, the residual monomers are removed by vacuum desorption, and the material is filtered out. get the product. Numbered M-2.

Embodiment 3

[0033] Step 1. Preparation of water phase

[0034] In a 2 cubic meter reactor, add 1000Kg of pure water and 2Kg of polyvinyl alcohol, and stir evenly.

[0035] Step 2. Preparation of oil phase

[0036] In a 1 cubic meter reactor, add 100Kg styrene monomer, 20Kg perfluorobutyl ethylene, 5Kg poly(propylene glycol) 4-nonylphenylene ether acrylic acid, 2Kg dimethyl diallyl ammonium chloride, 0.5Kg white oil, 0.5Kg polyethylene wax, and then add 0.5Kg benzoyl peroxide, and stir evenly.

[0037] Step 3. Polymerization

[0038] Add the prepared oil phase solution into the reaction kettle equipped with the prepared water phase in step 1, and react at 80°C for 15 hours. After the reaction, the residual monomer is removed by vacuum desorption method, and the material is filtered out. get the product. Numbered M-3.

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PUM

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Abstract

The invention discloses preparation for flame-retardant polystyrene copolymer. Pure water is fed into a reaction kettle, a certain amount of dispersing agent, initiator, styrene, perfluorobutyl ethylene, poly(propylene glycol) 4-nonylphenyl ether acrylate and dimethyl diallyl ammonium chloride is added to be heated to the reaction temperature to be polymerized, and accordingly the flame-retardant polystyrene copolymer is obtained.

Description

technical field [0001] The present invention relates to a kind of polystyrene, especially a kind of preparation of flame-retardant polystyrene copolymer. technical background [0002] Due to the excellent performance of flame-retardant expandable polystyrene, it is increasingly widely used in the building materials industry. For example, plates made of flame-retardant expandable polystyrene can be used as new color steel building materials, highway foundation bedding and gymnasium construction materials. [0003] CN103333422A discloses a flame-retardant expandable polystyrene particle mixed with low-sulfur expanded graphite and a preparation method thereof. Through the dispersion of ultrafine graphite, 0.1-10wt% low-sulfur expanded graphite (or sulfur-free expanded graphite) based on styrene monomer is uniformly dispersed in the styrene polymerization system, and 0.1-1wt% halogen flame retardant is added at the same time agent (such as hexabromocyclododecane) and related a...

Claims

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Application Information

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IPC IPC(8): C08F290/06C08F212/08C08F214/18C08F226/02
CPCC08F290/062C08F212/08
Inventor 王琪宇马骏
Owner 王金明