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Wear-resistance halogen-free low-smoke expansion flame-retarding polyolefin sheath plastic and preparation method thereof

A technology of polyolefin sheath and intumescent flame retardant, which is applied in the direction of plastic/resin/wax insulators, organic insulators, conductors, etc., can solve the problems of poor wear resistance and high resin ratio, and achieve improved wear resistance and improved use The effect of longevity

Active Publication Date: 2011-06-22
上海新上化高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high resin ratio and poor wear resistance of the halogen-free low-smoke flame-retardant cable sheath plastic using intumescent flame retardants, it cannot meet the normal use in harsh environments and improve the service life.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Ethylene-vinyl acetate copolymer EVA 65 parts

[0039] Metallocene linear low-density polyethylene mLLDPE 20 parts, the density is 0.930g / cm 3

[0040] Maleic anhydride grafted linear low density polyethylene 10 parts, the density is 0.925g / cm 3

[0041] Halogen-free intumescent flame retardant 30 parts

[0042] γ-Aminopropyltriethoxysilane 1.5 parts

[0043] Antioxidant 1010 0.5 parts

[0044] Nano silicon carbide 5 parts

[0045] Among them, the halogen-free intumescent flame retardant is composed of ammonium polyphosphate, pentaerythritol and melamine, and the weight ratio is 6:1.5:0.5; the average particle diameter of the nano-silicon carbide is 40nm.

[0046] The preparation method is as follows:

[0047] (1) Put the untreated halogen-free intumescent flame retardant and nano-silicon carbide powder in a high-speed mixer, evenly spray the coupling agent on the powder in proportion, stir for 5 minutes, dry, and set aside;

[0048] (2) Place the rest of the co...

Embodiment 2

[0051] EVA 55 parts

[0052] mLLDPE 15 parts Density 0.915g / cm 3

[0053] Maleic anhydride grafted linear low density polyethylene 15 parts, density 0.925g / cm 3

[0054] Halogen-free intumescent flame retardant 25 parts

[0055] 2.5 parts of γ-aminopropyltriethoxysilane

[0056] Antioxidant 1010 0.5 parts

[0057] Nano silicon carbide 4 parts

[0058] Among them, the halogen-free intumescent flame retardant is composed of ammonium polyphosphate, dipentaerythritol and melamine formaldehyde in a weight ratio of 6:1:1; the average particle size of the nano-silicon carbide is 40nm.

[0059] The preparation method is as follows:

[0060] (1) Put the untreated halogen-free intumescent flame retardant and nano-silicon carbide powder in a mixer, evenly spray the coupling agent on the powder in proportion, stir for 7 minutes, dry, and set aside;

[0061] (2) Put the rest of the ingredients in the formula and the pre-treated powder into a banbury mixer for 10 minutes and a tempera...

Embodiment 3

[0064] EVA 50 parts

[0065] mLLDPE 20 parts

[0066] EVA grafted maleic anhydride 8 parts

[0067] Halogen-free intumescent flame retardant 30 parts

[0068] Isopropyl triisooctadecanoyl titanate 2 parts

[0069] Antioxidant 1010 1 part

[0070] Nano silicon carbide 3 parts

[0071] Among them, the halogen-free intumescent flame retardant is composed of ammonium metaphosphate, dipentaerythritol and melamine, and the weight ratio is 5:1.5:1; the average particle diameter of the nano silicon carbide is 50nm.

[0072] The preparation method is as follows:

[0073] (1) Put the untreated halogen-free intumescent flame retardant and nano-silicon carbide powder in a mixer, evenly spray the coupling agent on the powder in proportion, stir at high speed for 5 minutes, dry and set aside;

[0074] (2) Put the rest of the ingredients in the formula and the pre-treated powder into a banbury mixer for 7 minutes and a temperature of 170°C;

[0075] (3) The material kneaded by the int...

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Abstract

The invention discloses wear-resistance halogen-free low-smoke expansion flame-retarding polyolefin sheath plastic and a preparation method thereof. The plastic comprises the following components in part by weight: 50 to 80 parts of polyolefine resin, 0 to 20 parts of compound resin, 3 to 15 parts of grafted material, 10 to 60 parts of halogen-free expansion flame retardant, 0.5 to 3 parts of coupling agent, 0.5 to 1.5 parts of antioxygen and 1 to 10 parts of nano silicon carbide. In the thermoplastic halogen-free low-smoke expansion flame-retarding polyolefin sheath plastic and the preparation method thereof, the nano silicon carbide is added into a blend system, so the wear resistance of the thermoplastic halogen-free low-smoke expansion flame-retarding polyolefin sheath plastic is improved, the thermoplastic halogen-free low-smoke expansion flame-retarding polyolefin sheath plastic meet the requirement for normal use in severe environments and the service life of the thermoplastic halogen-free low-smoke expansion flame-retarding polyolefin sheath plastic is prolonged.

Description

technical field [0001] The invention relates to a production method of a thermoplastic halogen-free low-smoke expansion flame-retardant polyolefin sheath plastic. Background technique [0002] Wires and cables are widely used in the transmission of energy and information. Traditional flame-retardant cables generally use polyvinyl chloride as the sheath, but because it contains halogen, it will emit a large amount of hydrogen halide gas and dense smoke when burned, causing the "secondary hazard" of fire. ", thereby increasing the fire loss, so it is necessary to develop halogen-free low-smoke wire and cable to meet the safety requirements of production and life. [0003] Traditional halogen-free low-smoke flame-retardant cable materials generally use inorganic flame retardants. Since halogen-free flame-retardant materials rely on the water produced by halogen-free flame retardants to achieve the purpose of flame-retardant polymer materials, halogen-free flame retardants need ...

Claims

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Application Information

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IPC IPC(8): C08L23/00C08L23/06C08L23/08C08L31/04C08L33/08C08L33/02C08L23/16C08L23/20C08L51/06C08K13/02C08K3/34B29B9/06H01B3/44H01B7/295
Inventor 徐永卫辛灵敏吴娟钟伟勤徐晓辉
Owner 上海新上化高分子材料有限公司
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