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Halogen-free environment-friendly polystyrene flame retardant and preparation method thereof

A technology of polystyrene and flame retardants, which is applied in the field of halogen-free environmentally friendly flame retardants, can solve the problems of high cost and insufficient carbon layer structure strength, and achieve low pollution, suppression of melting dripping, and high flame retardancy Effect

Active Publication Date: 2013-10-02
菲沐盛(山西)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

[0007] The problem of the present invention is to overcome the high cost of simply using ammonium polyphosphate and expanded graphite, and the insufficient structural strength of the carbon layer after applying expanded graphite in the resin, and provide a polystyrene halogen-free environment-friendly flame retardant and its preparation method

Method used

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  • Halogen-free environment-friendly polystyrene flame retardant and preparation method thereof
  • Halogen-free environment-friendly polystyrene flame retardant and preparation method thereof

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specific Embodiment approach 1

[0018] Implementation of a polystyrene halogen-free environment-friendly flame retardant provided by the present invention, the composition and content of the halogen-free environment-friendly flame retardant are as follows in parts by mass:

[0019] 30-70 parts of ammonium polyphosphate, the ammonium polyphosphate is type II ammonium polyphosphate, the degree of polymerization is n≥1000, and the particle size is 80-200 mesh.

[0020] 10-50 parts of expanded graphite, the expanded graphite is 80-200 mesh, and the expansion multiple is 0.15-0.25 m3 / kg.

[0021] The calcium carbonate of 10~25 parts, described calcium carbonate is light calcium carbonate.

[0022] 3 to 5 parts of a char formation accelerator, the char formation accelerator being one of zinc oxide, zinc borate, and magnesium oxide.

[0023] 0.5-3 parts of surfactant, the surfactant is one of silane coupling agents KH550 and KH570.

[0024] Based on the above technical scheme, it is further preferred to implement...

specific Embodiment approach 2

[0026] Implement the preparation method of above-mentioned a kind of polystyrene halogen-free environment-friendly flame retardant of the present invention, this preparation method is to take raw material by a kind of polystyrene halogen-free environment-friendly flame retardant weight part, and ammonium polyphosphate, expanded graphite, Calcium carbonate and char formation accelerator are added to a high-speed mixer, heated to 90~130°C, mixed at a high speed of 800~1200r / min for 3~5min, mixed into a compound flame retardant, and then added into a compound flame retardant 1~3% of the total mass of the surfactant, continue to mix at high speed for 5~8min, and then the polystyrene halogen-free environmentally friendly flame retardant is obtained.

[0027] Realize the preparation method of the above-mentioned polystyrene halogen-free environment-friendly flame retardant, the preparation method can effectively reduce the invalid expansion of expanded graphite caused by high tempera...

Embodiment 1

[0030] A halogen-free environmentally friendly flame retardant applied to polystyrene, the flame retardant is made of the following raw materials in parts by weight: 55 parts of ammonium polyphosphate (APP), 25 parts of expanded graphite (EG), calcium carbonate (CaCO 3 ) 15 parts, magnesium oxide (MgO) 5 parts, silane coupling agent (KH570) 3 parts.

[0031] A kind of preparation method of the above-mentioned halogen-free environment-friendly flame retardant applied to polystyrene, the method is to weigh the raw materials according to the above-mentioned parts by weight, add ammonium polyphosphate, expanded graphite, calcium carbonate, magnesium oxide into the high-speed mixer, and heat up to Mix at 130°C for 5 minutes at a speed of 800r / min at a high speed to form a compound flame retardant, then add silane coupling agent KH570 of 2% of the total mass of the compound flame retardant, and continue to mix at a high speed for 8 minutes to obtain polyphenylene Halogen-free enviro...

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Abstract

The invention relates to a halogen-free environment-friendly polystyrene flame retardant and a preparation method thereof. The preparation method comprises the steps of: adding II-type ammonium polyphosphate, expanded graphite, calcium carbonate, a carbon forming accelerator and a surfactant into a high-speed mixing machine, increasing the temperature, and mixing at a high speed to prepare a compound flame retardant, then adding a surfactant, and continuing high-speed mixing to obtain the halogen-free environment-friendly polystyrene flame retardant. The adhesive property of carbon residue can be improved by adopting reaction of low-cost calcium carbonate and ammonium polyphosphate, the usage amount of the expanded graphite can be effectively reduced, the smoke release quantity can be decreased, and the occurrence of molten drop phenomena can be prevented; and the synergetic flame retardant effect of the compound flame-retardant system can be greatly enhanced, and the flame retardance effect is good.

Description

technical field [0001] The invention relates to polystyrene and its flame retardant, in particular to a halogen-free and environment-friendly flame retardant applied to polystyrene. Background technique [0002] Polystyrene (PS) is one of the most produced resins in the world. Because of its non-toxicity, low density, chemical corrosion resistance and good electrical insulation, it is widely used in electronics / electrical appliances, automobiles, construction, toys, packaging and other fields. However, polystyrene is extremely flammable, and its disadvantages such as severe melting and dripping caused by strong oxidative cracking and release of toxic gases during combustion severely restrict its popularization and use in fields with fire protection requirements. As people's requirements for safety are increasing, the development of flame-retardant polystyrene is favored. [0003] Adding flame retardants to polystyrene resin can improve its flame retardant performance. The c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08K13/04C08K3/32C08K7/24C08K3/04C08K3/26
Inventor 魏丽乔高向华苏超李全红许并社
Owner 菲沐盛(山西)材料科技有限公司
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