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Environment-friendly flame-retardant plastic and preparation method thereof

A flame retardant plastic and environmental protection technology, applied in the field of environmentally friendly flame retardant plastics and their preparation, can solve the problems of complex components, poor material performance stability, short service life and other problems of the environmentally friendly flame retardant plastics, and achieve improved comprehensive performance and stable performance. The effect of excellent flame retardant effect and low equipment investment

Inactive Publication Date: 2021-05-28
李明杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The environmentally friendly flame-retardant plastic has good mechanical properties and flame-retardant properties. It will not release toxic gases when it is pyrolyzed at high temperature. The preparation method is simple and suitable for industrialization; however, the environmentally friendly flame-retardant plastic has complex components and high production costs. , the compatibility between the components is not good, it is easy to cause phase separation, resulting in poor material performance stability and short service life, which contains polyoxymethylene, vanadium carbide, antimony trichloride and indium chloride, and the environmental protection performance needs to be further improved improve

Method used

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  • Environment-friendly flame-retardant plastic and preparation method thereof

Examples

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Effect test

Embodiment 1

[0029] A preparation method of an environmentally friendly flame-retardant plastic, characterized in that it comprises the following steps:

[0030] Step S1, vinyl nitrile modified octamethylcyclotetrasilazane: octamethylcyclotetrasilazane,

[0031] Add 2-chloroacrylonitrile and a basic catalyst into an organic solvent, stir and react at 35°C for 4 hours, filter, and remove the solvent by rotary evaporation to obtain vinyl nitrile-modified octamethylcyclotetrasilazane;

[0032] Step S2, preparation of benzophenone-based propenyl ionomer: adding 4,4'-bis(N,N-dimethylamino)benzophenone and 3-chloro-2-chloromethylpropene to acetone In, the reaction was stirred at 30°C for 6 hours,

[0033] The acetone is removed by rotary evaporation to obtain a benzophenone-based propenyl ionomer;

[0034] Step S3, molding of plastics: the vinyl nitrile group-modified octamethylcyclotetrasilazane prepared through step S1, the benzophenone-based propenyl ionomer prepared through step S2, the 2,...

Embodiment 2

[0042] A preparation method of an environmentally friendly flame-retardant plastic, characterized in that it comprises the following steps:

[0043] Step S1. Vinyl nitrile modified octamethylcyclotetrasilazane: Add octamethylcyclotetrasilazane, 2-chloroacrylonitrile and basic catalyst to the organic solvent, and stir the reaction at 39°C for 4.5 hour, after filtering, the solvent was removed by rotary evaporation to obtain vinyl nitrile modified octamethylcyclotetrasilazane;

[0044] Step S2, preparation of benzophenone-based propenyl ionomer: adding 4,4'-bis(N,N-dimethylamino)benzophenone and 3-chloro-2-chloromethylpropene to acetone , stirred and reacted at 32°C for 6.5 hours, and then the acetone was removed by rotary evaporation to obtain a benzophenone-based propenyl ionomer;

[0045] Step S3, molding of plastics: the vinyl nitrile group-modified octamethylcyclotetrasilazane prepared through step S1, the benzophenone-based propenyl ionomer prepared through step S2, the 2...

Embodiment 3

[0052] A preparation method of an environmentally friendly flame-retardant plastic, characterized in that it comprises the following steps:

[0053] Step S1. Vinyl nitrile modified octamethylcyclotetrasilazane: Add octamethylcyclotetrasilazane, 2-chloroacrylonitrile and basic catalyst to the organic solvent, and stir at 43°C for 5 hour, after filtering, the solvent was removed by rotary evaporation to obtain vinyl nitrile modified octamethylcyclotetrasilazane;

[0054] Step S2, preparation of benzophenone-based propenyl ionomer: adding 4,4'-bis(N,N-dimethylamino)benzophenone and 3-chloro-2-chloromethylpropene to acetone , stirred and reacted at 35°C for 7 hours, and then the acetone was removed by rotary evaporation to obtain a benzophenone-based propenyl ionomer;

[0055] Step S3, molding of plastics: the vinyl nitrile group-modified octamethylcyclotetrasilazane prepared through step S1, the benzophenone-based propenyl ionomer prepared through step S2, the 2,5- After bis(1,...

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Abstract

The invention discloses a preparation method of environment-friendly flame-retardant plastic. The preparation method comprises the following steps: step S1, modification of octamethylcyclotetrasilazane with vinyl nitrile; step S2, preparation of an allyl benzophenone ionomer; and S3, plastic forming. The invention also provides the environment-friendly flame-retardant plastic prepared according to the preparation method of the environment-friendly flame-retardant plastic. The environment-friendly flame-retardant plastic provided by the invention is remarkable in flame-retardant effect, good in environment-friendly performance and performance stability, and excellent in comprehensive performance, aging resistance and mechanical properties.

Description

technical field [0001] The invention relates to the technical field of plastics, in particular to an environmentally friendly flame-retardant plastic and a preparation method thereof. Background technique [0002] In recent years, with the development of society and the advancement of science and technology, daily-use products made of plastics have played an increasingly important role in people's daily lives. They not only bring a lot of convenience to people's lives, but also reflect the The degree of development of modern civilization. Plastic materials are widely used in various textiles, packaging materials, mechanical parts, agricultural films, biological Medicines and other products. [0003] There are many types of existing plastic materials, but they are generally easy to burn, and the burning speed is fast, and a large amount of poisonous gas will be produced, causing casualties and property losses. In order to improve the flame retardancy of plastics, it is usu...

Claims

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Application Information

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IPC IPC(8): C08F255/02C08F283/12C08F259/02C08F230/08C08K5/3472
CPCC08F255/02C08F259/02C08F283/124C08K5/3472C08F230/085
Inventor 李明杰
Owner 李明杰
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