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A kind of flame-retardant high-impact polystyrene used for the housing of household appliances and its preparation method

A technology for flame-retardant high-impact polystyrene and household appliances, which is applied in the field of flame-retardant household appliance materials, and can solve the problems of P-N halogen-free flame retardants such as poor moisture resistance, poor flame retardancy and mechanical properties, and affecting material durability. Achieve excellent flame retardant effect, improve moisture resistance and enhance compatibility

Active Publication Date: 2021-05-07
上海凯矜新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve the defects of poor flame retardancy and mechanical properties of flame-retardant nylon engineering plastics in the prior art, the invention provides a P-N type flame retardant, flame-retardant masterbatch, flame-retardant nylon engineering plastics and its preparation method
However, the P-N halogen-free flame retardant used in this invention has poor moisture resistance, which affects the durability of the material
[0007] In summary, the P-N-containing flame retardants of the prior art usually have the defects of poor moisture resistance, poor compatibility with the matrix, and easy migration, so a kind of flame retardant with good moisture resistance, compatibility and low migration is developed. Flame retardant materials for household appliances are of great significance

Method used

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  • A kind of flame-retardant high-impact polystyrene used for the housing of household appliances and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Heat deionized water to 87°C, add imidazole and ethyl methyl hypophosphite and stir well, then add porous nano-SiO 2 Microparticles, continue to heat under stirring to evaporate the water completely, then add nickel oxide as a catalyst, heat to 138 ° C for 17 minutes to prepare P-N-Si composite flame retardant; porous nano-SiO 2 The average particle diameter of microparticles is 38nm, and porosity is 76%; The parts by weight of each raw material are, deionized water 68 parts by weight, imidazole 7 parts by weight, ethyl methyl hypophosphite 7 parts by weight, porous nano SiO 2 17 parts by weight of microparticles, 1 part by weight of nickel oxide;

[0028] (2) Disperse melamine in acetone, add the P-N-Si composite flame retardant prepared in step (1), stir evenly with magnetic force, then heat to 66°C, then slowly add the acetone solution of toluene diisocyanate dropwise, and cool down after 3 hours Cooling, suction filtration, washing, drying, obtained flame retar...

Embodiment 2

[0031] (1) Heat deionized water to 86°C, add imidazole and ethyl methyl hypophosphite and stir well, then add porous nano-SiO 2 Microparticles, continue to heat under stirring to evaporate the water completely, then add nickel oxide as a catalyst, heat to 135 ° C for 19 minutes to obtain a P-N-Si composite flame retardant; porous nano-SiO 2 The average particle diameter of microparticles is 35nm, and porosity is 72%; The parts by weight of each raw material are, deionized water 71 parts by weight, imidazole 6 parts by weight, ethyl methyl hypophosphite 6 parts by weight, porous nano SiO 2 16 parts by weight of microparticles, 1 part by weight of nickel oxide;

[0032] (2) Disperse melamine in acetone, add the P-N-Si composite flame retardant prepared in step (1), stir evenly with magnetic force, then heat to 62°C, then slowly add the acetone solution of toluene diisocyanate dropwise, after 3.5 hours Cooling, suction filtration, washing, and drying to prepare flame-retardant m...

Embodiment 3

[0035] (1) Heat deionized water to 86°C, add imidazole and ethyl methyl hypophosphite and stir well, then add porous nano-SiO 2 Microparticles, continue to heat under stirring to evaporate the water completely, then add nickel oxide as a catalyst, heat to 135 ° C for 19 minutes to obtain a P-N-Si composite flame retardant; porous nano-SiO 2 The average particle diameter of microparticle is 45nm, and porosity is 78%; The parts by weight of each raw material are, deionized water 65 parts by weight, imidazole 7 parts by weight, ethyl methyl hypophosphite 7 parts by weight, porous nano SiO 2 19 parts by weight of microparticles, 2 parts by weight of nickel oxide;

[0036] (2) Disperse melamine in acetone, add the P-N-Si composite flame retardant prepared in step (1), stir evenly with magnetic force, then heat to 68°C, then slowly add the acetone solution of toluene diisocyanate dropwise, and cool down after 3 hours Cooling, suction filtration, washing, and drying to obtain flame-...

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Abstract

The invention relates to the technical field of flame-retardant home appliance materials, and provides a flame-retardant high-impact polystyrene used for a shell of a household appliance and a preparation method thereof. In this method, imidazole and ethyl methyl hypophosphite were used as raw materials in porous nano-SiO 2 Acid-base reaction and dehydration deposition occur on the surface and pores of the particles to prepare a P-N-Si composite flame retardant, and then use melamine and toluene diisocyanate as raw materials to form cross-linked polymerization on the surface of the P-N-Si composite flame retardant The flame retardant microcapsules are prepared, and then blended with high-impact polystyrene resin for plasticizing, tableting, and crushing to obtain flame-retardant high-impact polystyrene materials. Compared with the traditional method, the preparation method of the invention can effectively improve the moisture resistance of the flame retardant, prevent the migration of the flame retardant inside the material, and improve the compatibility between the flame retardant and polystyrene.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant household appliance materials, and provides a flame-retardant high-impact polystyrene used for household appliance shells and a preparation method. Background technique [0002] There are many kinds of household appliances, which can be divided into kitchen appliances, household appliances, audio-visual appliances, air-conditioning appliances, medical fitness appliances and other household appliances according to their uses. Among the housing materials of household appliances, most of them are thermoplastics, and the rest are thermosetting plastics; among thermoplastics, they are mainly general-purpose plastics; thermosetting plastics usually include phenolic plastics, aminoplastics, epoxy resins, etc. [0003] Currently, two types of materials, acrylonitrile-butadiene-styrene copolymer and high-impact polystyrene resin, are widely used in the use of housing materials for household applian...

Claims

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Application Information

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IPC IPC(8): C08L51/04C08K13/06C08K9/12C08K9/10C08K5/5313
CPCC08K5/5313C08K9/10C08K9/12C08K13/06C08L2201/02C08L51/04
Inventor 蒋涛
Owner 上海凯矜新材料科技有限公司