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Vermiculite compositional flame-retardant high-impact polystyrene composite material

A technology of flame-retardant high-impact polystyrene and composite materials, which is applied in the field of halogen-free flame-retardant high-impact polystyrene composite materials and halogen-free flame-retardant polystyrene composite materials, and can solve the problem of toxic halogen-containing flame retardants. , secondary disasters, harmful gases and smog, etc., to achieve the effects of low price, preventing the volatilization of combustible gases, and simple processing technology

Inactive Publication Date: 2009-08-12
甘肃省交通科学研究院集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the use of halogen-containing flame retardants such as decabromodiphenyl ether can achieve good flame-retardant effects on high-impact polystyrene, but due to the toxicity of halogen-containing flame retardants, extremely harmful gases and smoke will be produced during combustion, resulting in the so-called Serious Consequences of "Second Disaster"

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: The natural vermiculite raw ore is selected and crushed to 100-500 mesh, and then the vermiculite powder, red phosphorus, and expanded graphite are fully mixed in a high-speed mixer at a weight ratio of 1:1:0.3 to obtain a compound Mix the flame retardant; then mix the obtained compound flame retardant and high-impact polystyrene in the internal mixer with a weight ratio of 1:2.5, and then inject molding on the injection molding machine with the conventional injection molding process to obtain a high Impact polystyrene composite flame retardant material. It has been measured that its oxygen index can reach 27.0, and its combustion performance is UL94-V2.

Embodiment 2

[0019] Example 2: Fully mix the natural vermiculite powder crushed to 100-500 mesh with red phosphorus and expanded graphite in a high-speed mixer at a weight ratio of 1:1:0.3 to obtain a compound flame retardant; then compound the obtained Compound flame retardant and high-impact polystyrene at a weight ratio of 1:2, mix in an internal mixer, and then inject molding on an injection molding machine with a conventional injection molding process to obtain a high-impact polystyrene composite flame-retardant material . It has been measured that its oxygen index can reach 28.0, and its combustion performance is UL94-V1.

Embodiment 3

[0020] Example 3: Mix the natural vermiculite powder crushed to 100-500 mesh with red phosphorus, expanded graphite, and melamine in a high-speed mixer in a weight ratio of 1:1:0.7:0.8 to obtain a compound flame retardant; Then the compounded flame retardant and high-impact polystyrene are mixed in an internal mixer at a weight ratio of 1:3, and then injection-molded on an injection molding machine by a conventional injection molding process to obtain high-impact polystyrene Composite flame retardant materials. It has been measured that its oxygen index can reach 27.1, and its combustion performance is UL94-V2.

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Abstract

The invention provides a halogen-free flame-retardant high impact polystyrene composite material prepared by taking vermiculite as a flame-retardant additive. The composite material is prepared by the following steps: mixing vermiculite powder crushed to 100 to 500 meshes and a halogen-free flame retardant according to the mass ratio of 1:1-1:10 to form a vermiculite composite flame retardant; and then banburying and injecting the vermiculite composite flame retardant and high impact polystyrene according to the mass ratio of 1:1-1:5. The halogen-free flame retardant is a compound of red phosphorus, expanded graphite and melamine. The flame-retardant composite material has low price, simple preparation process, better flame-retardant performance, and oxygen index of more than 27, and meets the requirements of a nonflammable material.

Description

technical field [0001] The invention belongs to the technical field of polymer flame-retardant materials application, and relates to a halogen-free flame-retardant polystyrene composite material, in particular to a halogen-free flame-retardant high-impact polystyrene composite material prepared with vermiculite as a flame-retardant additive. . Background technique [0002] As synthetic materials are more and more widely used in various fields, the requirements for flame retardancy of materials are also getting higher and higher. In recent years, many countries have formulated corresponding flame-retardant regulations on various materials and products to ensure the safety of the country and people's lives and properties. However, while improving the flame retardancy of the material, it is necessary to reduce the amount of toxic gas and smoke generated by the material during combustion and pyrolysis. According to statistics, about 80% of fatal accidents in fires are caused b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08K13/00C08K3/34C08K3/02C08K3/04C08K5/3492
Inventor 雷自强王伟杨全录姬强强张哲
Owner 甘肃省交通科学研究院集团有限公司
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