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A kind of preparation method of bulk flame retardant polystyrene by emulsion method

A technology of polystyrene and emulsion method, which is applied in the field of preparation of flame-retardant polystyrene by emulsion method, can solve the problems of fire hazards, life and property, impact on mechanical strength, and difficulty in uniform dispersion, so as to overcome the decline in mechanical properties and benefit The effect of environmental protection and easy availability of raw materials

Inactive Publication Date: 2016-02-24
东莞市湘莞塑胶制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is flammable, which often brings fire hazards and harms people's lives and property. Therefore, solving the flame retardant problem of polystyrene has attracted people's attention.
[0003] The present invention mainly solves the current fire prevention treatment problems of polystyrene and its foam boards, that is, solves the problems that the addition of flame retardants is easy to precipitate, easy to volatilize, difficult to disperse uniformly, affect mechanical strength, affect foaming, and low flame retardant efficiency.

Method used

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  • A kind of preparation method of bulk flame retardant polystyrene by emulsion method
  • A kind of preparation method of bulk flame retardant polystyrene by emulsion method
  • A kind of preparation method of bulk flame retardant polystyrene by emulsion method

Examples

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Effect test

Embodiment 1

[0026] Example 1 Add distilled water 50ml, 10% polyvinyl alcohol solution 1.5ml, 10% sodium lauryl sulfate solution 1.0ml, styrene 9.7g, N -Tribromophenylmaleimide 0.3g, benzoyl peroxide 0.11g, start stirring, heat up to 90°C, keep warm for 5h, stop the reaction, stir, cool to room temperature, filter out the product particles, wash with water, After drying, a white granular bulk flame-retardant polystyrene is obtained with a yield of 94% and a glass transition temperature of 90°C.

Embodiment 2

[0027] Example 2 Add distilled water 50ml, 10% polyvinyl alcohol solution 1.5ml, 10% sodium lauryl sulfate solution 1.0ml, styrene 9.5g, N - 0.5g of tribromophenylmaleimide and 0.1g of benzoyl peroxide, start stirring, raise the temperature to 80°C, keep warm for 6h, stop the reaction, cool to room temperature under stirring, filter out the product particles, wash with water, After drying, a white granular bulk flame-retardant polystyrene is obtained with a yield of 97% and a glass transition temperature of 96°C.

Embodiment 3

[0028] Example 3 Add distilled water 50ml, 10% polyvinyl alcohol solution 1.5ml, 10% sodium lauryl sulfate solution 1.0ml, styrene 9.3g, N - Tribromophenylmaleimide 0.7g, 0.09g tert-butyl peroxybenzoate, start stirring, heat up to 70°C, keep warm for 7h, stop the reaction, stir, cool to room temperature, filter out the product particles, and water After washing and drying, white granular bulk flame-retardant polystyrene was obtained, with a yield of 96% and a glass transition temperature of 101°C.

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Abstract

The invention relates to a method for preparing emulsion noumenon antiflaming polystyrene. The structure of the polymer is expressed by a formula shown in the specification, wherein in the formula, n is more than m. The preparation method comprises the following steps of: adding appropriate emulgator and initiator into a certain proportion of styrene and N-tribromo phenyl maleimide, carrying out polymerization reaction in water phase emulsion for 5-8 hours at 70-95 DEG C, cooling and filtering product particles, washing with water, and drying, thereby obtaining white granular noumenon antiflaming polystyrene. The emulsion noumenon antiflaming polystyrene is a permanent antiflaming material, the fire retardant is not dissolved out, antiflaming elements are scattered uniformly, the antiflaming performance is good, and the mechanical performance is good. The method is simple, has low cost, is environmentally-friendly because water is taken as the solvent emulsion for polymerization, is easy for realization of large-scale production, and has good application and development prospect.

Description

technical field [0001] The invention relates to a method for preparing bulk flame-retardant polystyrene by an emulsion method, in particular to a preparation method for copolymerizing styrene and a reactive flame retardant N-tribromophenylmaleimide to generate bulk flame-retardant polystyrene. The polymer is suitable for preparing flame-retardant polystyrene fireproof boards, expandable flame-retardant polystyrene, flame-retardant polystyrene devices and the like. Background technique [0002] With the advancement of science and technology, the synthetic polymer material industry has developed rapidly. Among them, polystyrene is widely used because it is a thermoplastic resin that is easy to process and shape, and its price is low. However, it is flammable, which often brings fire hazards and harms people's lives and property. Therefore, solving the flame retardant problem of polystyrene has attracted people's attention. [0003] The present invention mainly solves the cur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F212/08C08F222/40C08F2/30C08F2/26
Inventor 王彦林王玉霞
Owner 东莞市湘莞塑胶制品有限公司
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