High-impact polystyrene blend and preparation thereof

A polystyrene and polystyrene resin technology, applied in the field of halogen-free flame-retardant high-impact polystyrene blends and their preparation, can solve problems such as environmental pollution and application restrictions, and achieve good mechanical properties and easy processing Forming, the effect of broad market development prospects

Inactive Publication Date: 2009-02-25
珠海市远康企业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, HIPS is very flammable, and releases a large amount of black smoke and toxic gases during combustion, which limits its application. In order to broaden its application range, flame retardant modification must be carried out
The most commonly used flame retardants for traditional flame retardant HIPS are brominated compounds. Although such flame retardants have high flame retardant efficiency and reasonable price, they will release toxic gases when burned, polluting the environment, especially polybrominated diphenyl ethers. PBDD (polybrominated benzoxin) and PBDF (polybrominated dibenzofuran) will be released when thermal degradation or burning of these compounds. The European Union's ROHS directive has proposed to ban the use of brominated biphenyls, polybrominated diphenyl ethers, etc. flame retardant

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] In this example, the high-impact polystyrene blend, comprising

[0043] High impact polystyrene resin, its mass percentage is 38%;

[0044]Magnesium hydroxide, its mass percentage is 26.7%;

[0045] The mass percentage of ammonium polyphosphate is 7.6%, the mass percentage of melamine is 3.0%, and the mass percentage of pentaerythritol is 3.8%;

[0046] Zinc borate, its mass percentage is 3.8%;

[0047] EPDM rubber grafted vinyl triethoxysilane, its mass percentage is 15.2%;

[0048] Gamma-aminopropyltriethoxysilane, its mass percentage is 0.76%;

[0049] Zinc stearate, its mass percentage is 0.76%;

[0050] Antioxidant 215, its mass percentage is 0.38%.

[0051] Through the physical performance test of the halogen-free flame-retardant high-impact polystyrene blend with the above ratio, the results are as follows, the melt index is 3.2; the tensile strength is 24.5MPa; the elongation at break is 55%; the Izod notched impact strength is 8.7kJ / m 2 ; Heat distortio...

Embodiment 2

[0053] In this example, the high-impact polystyrene blend, comprising

[0054] High impact polystyrene resin, its mass percentage is 38%;

[0055] Organosilicon-coated modified magnesium hydroxide has a mass percentage of 26.7%;

[0056] The mass percentage of ammonium polyphosphate is 7.6%, the mass percentage of melamine is 3.0%, and the mass percentage of pentaerythritol is 3.8%;

[0057] Zinc borate, its mass percentage is 3.8%;

[0058] Ethylene-octene copolymer, its mass percentage is 15.2%;

[0059] Gamma-aminopropyltriethoxysilane, its mass percentage is 0.76%;

[0060] Zinc stearate, its mass percentage is 0.76%;

[0061] Antioxidant 225, its mass percentage is 0.38%.

[0062] Through the physical performance test of the above-mentioned halogen-free flame-retardant high-impact polystyrene blend, the results are as follows, the melt index is 4.2; the tensile strength is 25.6MPa; the elongation at break is 66%; the Izod notched impact strength is 9.5kJ / m 2 ; Hea...

Embodiment 3

[0064] In this example, the high-impact polystyrene blend, comprising

[0065] High impact polystyrene resin, its mass percentage is 38%;

[0066] Aluminum hydroxide, its mass percentage is 26.7%;

[0067] The mass percentage of ammonium polyphosphate is 7.6%, the mass percentage of melamine is 3.0%, and the mass percentage of epoxy resin is 3.8%;

[0068] Molybdenum oxide, its mass percentage is 3.8%;

[0069] Styrene-isoprene-styrene copolymer, its mass percentage is 15.2%;

[0070] Gamma-aminopropyltriethoxysilane, its mass percentage is 0.76%;

[0071] Zinc stearate, its mass percentage is 0.76%;

[0072] Antioxidant 215, its mass percentage is 0.38%.

[0073] Through the physical performance test of the above-mentioned halogen-free flame-retardant high-impact polystyrene blend, the results are as follows, the melt index is 3.3; the tensile strength is 23.8MPa; the elongation at break is 50%; the Izod notched impact strength is 8.5kJ / m 2 ; Heat distortion temperatu...

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Abstract

The invention relates to a synthetic material, in particular to a halogen-free flame retardant high impact polystyrene blend and a preparation method thereof. The high impact polystyrene blend comprises high impact polystyrene resin with the mass percent of 35-75%, an inorganic flame retardant with the mass percent of 7-45%, an intumescent flame retardant with the mass percent of 5-20%, a flame retardant synergist with the mass percent of 1-5%, a toughening agent with the mass percent of 10-20%, a coupling agent with the mass percent of 0.5-2.0%, a lubricant with the mass percent of 0.5-3.0% and an antioxidant with the mass percent of 0.2-3.0%. The halogen-free flame retardant high impact polystyrene blend is produced by high-speed premixing and extrusion prilling, and has the advantages of environmental protection, flame retardation, low smoke, weather resistance, good thermal stability and mechanical property, easy machine shaping, etc.

Description

technical field [0001] The invention relates to a synthetic material, in particular to a halogen-free flame-retardant high-impact polystyrene blend and a preparation method thereof. Background technique [0002] High-impact polystyrene (HIPS) is generally polystyrene grafted with a small amount of butadiene monomer. It has excellent processing performance, mechanical properties, electrical properties, and stable dimensions, and the appearance of molded products is good. The price is low, so it is widely used in household appliances, office equipment, instruments, auto parts, daily appliances and packaging materials. In recent years, international oil prices have been rising steadily, and the prices of downstream products such as resin raw materials in the petrochemical industry have generally risen, which has caused huge production pressure on household appliances, chemicals, construction and other industries. Most of the products originally produced by acrylonitrile-butadi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/04C08K13/02C08K13/06C08K3/22C08K3/32C08K5/3492C08K5/053C08K3/38C08K9/06C08L23/08C08L53/02B29B9/12B29C47/92B29C48/92
CPCB29C47/92B29C48/9185B29C48/04B29C48/92B29C2948/92704B29C2948/92895
Inventor 谢振平谢振章罗权焜郭建华
Owner 珠海市远康企业有限公司
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