Non-halogen flame-proof polyvinyl composite and method of producing the same

A technology for flame-retardant polyethylene and composition, applied in the field of flame-retardant polyethylene resin and its preparation, can solve the problems of poor processing performance, water resistance and compatibility, and achieve good comprehensive mechanical properties, low addition amount, High flame retardant efficiency

Inactive Publication Date: 2009-04-08
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, APP has poor processing performance, water resistance, and compatibility with organic substances.

Method used

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  • Non-halogen flame-proof polyvinyl composite and method of producing the same
  • Non-halogen flame-proof polyvinyl composite and method of producing the same

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] Below in conjunction with embodiment, further illustrate the present invention.

[0029] raw material :

[0030] polyethylene resin :

[0031] ① Low-density polyethylene (LDPE), produced by the chemical plant of Beijing Yanshan Petrochemical Corporation, brand: AC-100, density 0.9225g / cm 3 , Melt flow rate 2.0g / 10min, granular.

[0032] ② Ammonium polyphosphate (APP): Produced by Hangzhou JLS Flame Retardant Chemical Co., Ltd., brand: JLS-APP101, its phosphorus content is 28-30%, and its nitrogen content is 17-20%.

[0033] ③ Melamine cyanurate (MC): Produced by Hangzhou JLS Flame Retardant Chemical Co., Ltd., brand: JLS-MC25.

[0034] ④ Resorcinol (diphenyl diphosphate) (RDP): Produced by Xu Ruida Company of the United States, brand: FyrolflexRDP.

[0035] ⑤ Maleic anhydride grafted ethylene-vinyl acetate copolymer (EVA-g-MAH): produced by Nanjing Deba Chemical Co., Ltd., brand: EVA-G-1, grafting rate 1.10%, melt flow rate 1-15g / 10min, VA content 28%. ...

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Abstract

The invention provides a non-halogen flame-retardant polyethylene composition and a preparation method thereof, which relates to the field of the flame-retardance modification of resins. The composition contains 100pbw (parts by weight) of polyethylene resin, 35 parts to 55 parts of non-halogen fire retardants and 8 parts to 20 parts of flame-retardant synergists. The non-halogen fire retardant is compounded by ammonium polyphosphate, melamine cyan urate and hydroxyphenol (diphenyl phosphate), wherein, the total amount of the ammonium polyphosphate and the melamine cyan urate accounts for 32pbw to 50pbw, and the weight ratio of the ammonium polyphosphate and the hydroxyphenol is 1:1 to 4:1; the hydroxyphenol (Diphenyl phosphate) accounts for 3pbw to 5pbw. The flame-retardant synergist can be graft copolymer of vinyl acetic ester and maleic anhydride, or graft copolymer of maleic anhydride and ethylene / octane, or ethylene / octane copolymer or polyphenyl ether. All components are mixed according to the parts by weight and then melted to obtain the polyethylene composition. Under the condition that FV-0 grade is ensured to reached, the polyethylene composition has high flame-retardant efficiency, generates no molten drop, creates small volume of smoke during burning and has good comprehensive mechanical properties.

Description

Technical field: [0001] The invention relates to a flame-retardant polyethylene composition, and furthermore, relates to a flame-retardant polyethylene resin modified by a halogen-free flame retardant and a preparation method thereof. Background technique: [0002] Widely used polyethylene (PE) is one of the five general-purpose plastics in the world. It has the advantages of light weight, non-toxicity, convenient processing and molding, low price, and chemical corrosion resistance. It is widely used. However, the limiting oxygen index of polyethylene is very low (about 17.5), and its flame retardant performance is poor. Therefore, the application of polyethylene is greatly limited, and it needs to be modified to a certain extent by flame retardancy. [0003] At present, the flame retardant means for polyethylene is still mainly to add halogenated flame retardants, which have the best flame retardant effect among many types of flame retardants. However, due to its large am...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L51/06C08L23/08C08L71/12C08K3/32C08K5/3492C08K5/523
Inventor 臧充光焦清介吴中伟张亚群
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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