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Thermoplastic halogen-free and low-smoke flame-retardant polyolefin sheathed plastic and preparation method and application thereof

A polyolefin sheath, low-smoke flame-retardant technology, applied in plastic/resin/wax insulators, organic insulators, conductors, etc., can solve problems such as poor fluidity, and achieve improved system fluidity, good flame retardant performance, and crack resistance. good performance

Inactive Publication Date: 2010-06-23
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

[0004] The purpose of the present invention is to provide a thermoplastic halogen-free low-smoke flame-retardant polyolefin sheath plastic and its preparation method and application, so as to overcome the disadvantages of poor fluidity of traditional halogen-free low-smoke polyolefin materials, and to meet the rapid development of current cable sheathing materials. production needs

Method used

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  • Thermoplastic halogen-free and low-smoke flame-retardant polyolefin sheathed plastic and preparation method and application thereof
  • Thermoplastic halogen-free and low-smoke flame-retardant polyolefin sheathed plastic and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Ethylene-vinyl acetate copolymer EVA 65 parts

[0028] Metallocene linear low density polyethylene mLLDPE 25 parts

[0029] Maleic anhydride grafted linear low density polyethylene 10 parts

[0030] Aluminum hydroxide 140 parts

[0031] Vinyltrimethoxysilane 1 part

[0032] Antioxidant 1010 0.5 parts

[0033] 1 part of hyperbranched polysiloxane (weight average molecular weight is 30000g / mol)

[0034] The ethylene-vinyl acetate copolymer can adopt the product of DuPont company's brand name 360; the metallocene linear low density polyethylene can adopt the product of Mitsui company's brand name SP1520;

[0035] Maleic anhydride grafted linear low-density polyethylene can use the product of Nanjing Deba Company with the brand name PE-G-4;

[0036] Vinyltrimethoxysilane can be the product of Cathay Pacific Huarong Chemical Co., Ltd. with the brand name SCA-1603; the preparation method is as follows:

[0037] (1) The above-mentioned components are banburyed in a banbu...

Embodiment 2

[0041] EVA 55 parts

[0042] mLLDPE 30 parts

[0043] Maleic anhydride grafted linear low density polyethylene 15 parts

[0044] Aluminum hydroxide 130 parts

[0045] Zinc borate 20 parts

[0046] Vinyltrimethoxysilane 2.5 parts

[0047] Antioxidant 1010 0.5 parts

[0048] 1 part of hyperbranched polysiloxane (weight average molecular weight is 40000g / mol)

[0049] The JB / T 10707-2007 standard is used for testing, and the specific performance is shown in Table 1 below. Preparation:

[0050] (1) The above-mentioned components are banburyed in a banbury mixer, the banburying time is 7min, and the temperature is 150°C;

[0051] (2) The material kneaded by the internal mixer is sheared and conveyed by the double cone, and then extruded and granulated by the single-screw extruder. : The heating / cooling section is divided into three zones, zone I 145°C±10°C, zone II 150°C±10°C, zone III 145°C±10°C; screen changing is divided into three zones, zone I 135°C±10°C, zone II 130°C ...

Embodiment 3

[0053] EVA 60 parts

[0054] Linear low density polyethylene LLDPE 12 parts

[0055] EVA grafted maleic anhydride 8 parts

[0056] Aluminum hydroxide 100 parts

[0057] Magnesium hydroxide 20 parts

[0058] Vinyltrimethoxysilane 2 parts

[0059] Antioxidant 1010 0.5 parts

[0060] Hyperbranched polysiloxane (weight average molecular weight is 30000g / mol) 2 parts

[0061] The JB / T 10707-2007 standard is used for testing, and the specific performance is shown in Table 1 below.

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Abstract

The invention discloses a thermoplastic halogen-free and low-smoke flame retardant polyolefin sheathed plastic which comprises the following components by weigh part: 30-80 of polyolefin resin, 0-30 of blend resin, 5-20 of grafted materials, 100-150 of inorganic fire retardants, 0.5-30 of coupling agents, 0.5-1.5 of antioxidants and 1-4 of hyperbranched polymers. Compared with the prior art, because hyperbranched polysiloxane is added into the halogen-free low-smoke flame retardant polyolefin sheathed plastic, a prepared product plays a toughening role while improving the system mobility. The obtained halogen-free low-smoke flame retardant polyolefin sheathed plastic adapts to quick production and has the advantages of good flame retardant property, good cracking resistance property, storing mechanical property and good extruding and forming quality.

Description

technical field [0001] The invention relates to a thermoplastic halogen-free low-smoke flame-retardant polyolefin sheath plastic and its production method and application. Background technique [0002] With the rapid development of my country's metallurgy, electric power, electronics, automation and information network industries, the consumption of matching wires and cables, especially flame-retardant wires and cables, has increased sharply, including power cables, control cables, signal cables, instruments and meters cables, computer cables, etc. Traditional flame-retardant cables generally use polyvinyl chloride as the sheath. Although polyvinyl chloride material has the characteristics of good flame retardancy, low price, and good extrusion process, because it contains halogen, it will release a large amount of hydrogen halide gas and Thick smoke causes the "secondary hazard" of the fire, thereby increasing the loss of the fire. In particular, many scientific studies ha...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/08C08L31/04C08L33/08C08L33/02C08L23/16C08L23/20C08L51/06C08L83/04B29B9/06B29C47/92H01B3/44H01B7/295
Inventor 徐永卫辛灵敏吴娟钟伟勤
Owner 上海新上化高分子材料有限公司
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