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Halogen-free fire-resistant high anti-impact polystyrene/ polyphenyl ether complex containing modified polyphenyl ether and method for production thereof

A technology of flame-retardant high-impact polystyrene and polystyrene resin, which is applied in the field of polymer materials, can solve the problems of reduced mechanical properties, low processing temperature, and poor stability, and achieves improved mechanical properties, reduced dosage, and easy processing Forming effect

Inactive Publication Date: 2004-08-18
KINGFA SCI & TECH CO LTD
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  • Summary
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AI Technical Summary

Problems solved by technology

[0004] The use of chlorinated paraffin can effectively flame-retardant HIPS, and there is no dioxin / difuran problem, but its stability is poor, its decomposition temperature is only 170 ° C, which is lower than the processing temperature of HIPS, and its decomposition product hydrogen chloride has serious damage to the mold corrosion
[0005] HIPS flame-retardant with phosphorus system does not have the problem of dioxin / difuran, which meets the requirements of environmental protection, but the mechanical properties are greatly reduced

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The preparation and physical properties of the halogen-free flame-retardant high-impact polystyrene / polyphenylene ether composite containing modified polyphenylene ether of the present invention are shown in Table 1. This test uses HIPS, the flame retardant is microencapsulated red phosphorus, and the impact modifier is styrene / butyl acrylate binary graft modified EPDM (EPDM-g-St / BA).

[0020] Because the partially cross-linked EPDM has a very low glass transition temperature and high strength. The grafted styrene / butyl acrylate copolymer not only has good compatibility with HIPS, but also has good flexibility of the grafted chain due to the presence of butyl acrylate. These characteristics make EPDM-g-St / BA have a good toughening effect on HIPS and can maintain the rigidity of HIPS.

[0021] The specific operation steps of the embodiment of the halogen-free flame-retardant high-impact polystyrene / polyphenylene ether compound containing modified polyphenylene ether are...

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Abstract

The present invention is halogen-free fireproof polystyrene / polyphenyl ether composition with high shock strength and its preparation, and belongs to the field of polymer material. The composition contains polystyrene resin with high shock strength 40-65 wt%, polyphenyl ether 8-40 wt%, fire retardant 5-25 wt% and machining assistant 0.5-5 wt%, and is prepared through high speed pre-mixing and twice extrusion process. The composition has serial advantages of being fireproof, environment friendly, weatherproof, hot stable, high in mechanical performance, easy in machining, etc. It is suitable for use in display, video recorder, copying press, facsimile machine, printer, air conditioner, refrigerator, etc.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a halogen-free flame-retardant compound and a preparation method thereof. Background technique [0002] Polystyrene (PS) was industrialized in 1930 by I.G Farben (predecessor of BASF) in Germany. As one of the five general-purpose plastics, it has the advantages of excellent formability, hard quality, transparency, rigidity, electrical insulation, low hygroscopicity, easy dyeing and low price. High-impact polystyrene (HIPS) is produced by adding a small amount of elastomer to PS, which overcomes the brittleness of polystyrene and is widely used in electronics, automobiles, home appliances, instruments, daily necessities, toys, etc. industry. However, HIPS is easy to burn, has poor weather resistance, and has poor fluidity after modification. It is not suitable for the manufacture of high surface requirements and large thin-walled products, which limits its further promotion and...

Claims

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Application Information

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IPC IPC(8): C08K5/524C08L25/06C08L71/12
Inventor 蔡彤旻薄文海叶南飚王林张万昌
Owner KINGFA SCI & TECH CO LTD
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