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Low-heat-release high-temperature-resistant irradiation cross-linked polyolefin insulating material

A cross-linked polyolefin, high temperature-resistant technology, applied in the direction of organic insulators, plastic/resin/wax insulators, etc., can solve problems such as fire extinguishing, difficulty in escaping and restoring work, a large amount of corrosive and toxic gases, and secondary hazards , to achieve the effect of increasing the degree of hardness and compactness, reducing the release of smoke, and reducing the rate of smoke release

Inactive Publication Date: 2019-02-01
中广核高新核材科技(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of halogen-containing flame-retardant cable generates a large amount of smoke when burned, and produces a large amount of corrosive and toxic gases, which brings great difficulties to fire extinguishing, escape and recovery work, and causes secondary hazards

Method used

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  • Low-heat-release high-temperature-resistant irradiation cross-linked polyolefin insulating material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1~3

[0033] Examples 1~3: A radiation cross-linked polyolefin insulating material with low heat release and high temperature resistance. Preparation method: Weigh the raw materials according to the formula, mix them in a high-speed mixer for 5 to 10 minutes, and knead through an internal mixer , The kneading temperature is 140~160℃; then through the twin-screw extruder extrusion granulation, the extrusion temperature is 140~160℃.

[0034] The polyolefin insulating material is composed of the following parts by weight, as shown in Table 1:

[0035] Table 1

[0036] ;

[0037] The TPO is a blend of rubber with a soft segment content greater than 20% and a hard segment polyolefin. The thermoplastic polyolefin elastomer has a density of 0.87 to 0.89 g / cm3 and melts at 230°C. Melting index is 0.2~1g / 10min;

[0038] The density of the POP is 0.92g / cm3, and the melt index is 1g / 10min (190°C);

[0039] The EVM is an ethylene-vinyl acetate copolymer with a density of 0.9~1g / cm3 and a VA content of ...

Embodiment 1

[0045] The TPO of Example 1 and Example 2 is CA-02A produced by Basel Company in the Netherlands, and the TPO of Example 3 is CA-10A.

[0046] The POP of Example 1 is 8102 produced by Saudi Arabia Company, the POP of Example 2 is 8108, and the POP of Example 3 is 8402.

[0047] The EVM of Example 1 is EVM500 produced by the German LANXESS Chemical Company, the EVM600 of Example 2 is EVM600, and the EVM700 of Example 3 is EVM700.

[0048] The aluminum hydroxide of Examples 1 to 3 is HW-F-1 produced by Shandong Pengfeng Aluminum.

[0049] The molecular sieve in the example is a 3A molecular sieve produced by Dalian Haixin Chemical, the example 2 is a 4A molecular sieve, and the example 3 is a 5A molecular sieve.

[0050] The organopolysiloxane coupling agent of Example 1 and Example 2 was ZS-100 produced by Yangzhou Zhongsen Technology Co., Ltd., and the organopolysiloxane coupling agent of Example 3 was ZS-200.

[0051] The naphthenic rubber oil in Examples 1 to 3 is K10A produced by Chin...

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Abstract

The invention discloses a low-heat-release high-temperature-resistant irradiation cross-linked polyolefin insulating material. The material comprises the following components in parts by weight: a polyolefin thermoplastic elastomer, vinyl polymer grafted polyether polyol, ethylene-vinyl acetate rubber, maleic anhydride grafted amorphous polyolefin, aluminum hydroxide, a molecular sieve, an organopolysiloxane coupling agent and naphthenic rubber oil; the thermoplastic polyolefin elastomer is a blend composed of rubber with a soft segment content greater than 20% and polyolefin with hard segments, the density of the thermoplastic polyolefin elastomer is 0.87-0.89 g / cm<3>, and the melt index at 230 DEG C is 0.2-1 g / 10 min; the density of the vinyl polymer grafted polyether polyol is 0.91-0.92g / cm<3>, and the melt index at 190 DEG C is 0.5-3.5 g / 10 min. According to the material provided by the invention, the heat release rate and the smoke release rate are obviously reduced, and the tensile strength and the elongation at break are obviously improved.

Description

Technical field [0001] The invention relates to the field of low-smoke halogen-free flame-retardant cable materials, in particular to a radiation crosslinked polyolefin insulating material with low heat release and high temperature resistance. Background technique [0002] Among the existing flame-retardant sheathing materials, on the one hand, halogen-based flame retardants have been widely used due to their low addition, low cost, and significant flame-retardant effect, and once occupied an important position in the field of flame-retardant polyolefin cable applications. However, this kind of halogen-containing flame-retardant cables emit a large amount of smoke when burned, and will generate a large amount of corrosive and toxic gases, which will bring great difficulties to fire fighting, escape and recovery, and cause secondary harm. Therefore, considering safety and environmental protection, low-smoke halogen-free flame retardants should be selected for cable applications. ...

Claims

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Application Information

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IPC IPC(8): C08L51/08C08L23/00C08L23/08C08L51/06C08L83/04C08K13/04C08K7/26C08K3/22C08K5/134H01B3/44H01B3/30
CPCC08K2201/003C08L21/00C08L23/02C08L23/0853C08L51/08C08L2201/02C08L2201/22C08L2203/202C08L2205/035C08L2207/04C08L101/00C08L51/06C08L83/04C08K13/04C08K3/22C08K7/24
Inventor 费楚然单永东
Owner 中广核高新核材科技(苏州)有限公司
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