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Low-smoke halogen-free fireproof shielding control cable

A control cable, fire-resistant technology, applied in the direction of insulating cables, cables, circuits, etc., can solve problems such as poor compatibility, affecting flame retardant performance, and difficulty in uniform dispersion

Pending Publication Date: 2020-10-20
ANHUI ZHONGTONG CABLE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This application contains various types of substances, and the flame retardant is an inorganic flame retardant. Although it has good low-smoke flame-retardant properties, it has poor compatibility with the sheath matrix-polyvinyl chloride resin It is difficult to disperse evenly in the material, which affects the performance of flame retardant performance

Method used

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  • Low-smoke halogen-free fireproof shielding control cable
  • Low-smoke halogen-free fireproof shielding control cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The fire-resistant sheath layer includes the following raw materials in parts by weight: 60 parts of modified polyvinyl chloride resin, 8 parts of ethylene-vinyl acetate copolymer, 2 parts of compatibilizer, 2 parts of flame retardant, 0.8 part of antioxidant, and 1.5 parts of lubricant ;

[0047] The refractory protective sheath material is made by the following steps:

[0048] Add modified polyvinyl chloride resin, ethylene-vinyl acetate copolymer, flame retardant, antioxidant and lubricant to the internal mixer in sequence according to parts by weight, and mix for 15 minutes at a temperature of 140°C , and then extruded and granulated by a single-screw extruder to obtain a refractory sheath layer material.

Embodiment 2

[0050] The fire-resistant sheath layer includes the following raw materials in parts by weight: 65 parts of modified polyvinyl chloride resin, 9 parts of ethylene-vinyl acetate copolymer, 2.5 parts of compatibilizer, 2.5 parts of flame retardant, 0.9 part of antioxidant, and 1.8 parts of lubricant ;

[0051] The refractory protective sheath material is made by the following steps:

[0052] Add modified polyvinyl chloride resin, ethylene-vinyl acetate copolymer, flame retardant, antioxidant and lubricant to the internal mixer in sequence according to parts by weight, and mix for 18 minutes at a temperature of 145°C , and then extruded and granulated by a single-screw extruder to obtain a refractory sheath layer material.

Embodiment 3

[0054] The fire-resistant sheath layer includes the following raw materials in parts by weight: 70 parts of modified polyvinyl chloride resin, 10 parts of ethylene-vinyl acetate copolymer, 3 parts of compatibilizer, 3 parts of flame retardant, 1 part of antioxidant, and 2 parts of lubricant ;

[0055] The refractory protective sheath material is made by the following steps:

[0056] Add modified polyvinyl chloride resin, ethylene-vinyl acetate copolymer, flame retardant, antioxidant and lubricant to the internal mixer in sequence according to parts by weight, and mix for 20 minutes at a temperature of 150°C , and then extruded and granulated by a single-screw extruder to obtain a refractory sheath layer material.

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Abstract

The invention discloses a low-smoke halogen-free fireproof shielding control cable. The cable comprises a cable conductor of a plurality of strands of copper stranded wires, the surface of the cable conductor is covered with a fireproof sheath layer, and the fireproof sheath layer comprises the following raw materials in parts by weight: 60-70 parts of modified polyvinyl chloride resin, 8-10 partsof an ethylene-vinyl acetate copolymer, 2-3 parts of a compatilizer, 2-3 parts of a flame retardant, 0.8-1 part of an antioxidant and 1.5-2 parts of a lubricant. According to the cable, the fireproofsheath layer is adopted as a sheath layer material, the fireproof sheath layer takes the modified polyvinyl chloride resin as a polymer matrix, the polyvinyl chloride resin has flame retardance, andafter modification, the tensile property can be improved, an epoxy group can be introduced to a molecular side chain, and the binding force with a flame retardant is improved; and the self-made flameretardant is added into the raw materials of the fireproof sheath layer, and the flame retardant is a phosphonate compound and can exert a certain plasticizing effect, so that the fireproof sheath layer is endowed with good low-smoke fire resistance and mechanical properties.

Description

technical field [0001] The invention belongs to the field of cables, and in particular relates to a low-smoke, halogen-free, fire-resistant shielded control cable. Background technique [0002] Cables are an indispensable product in today's social life, whether it is power cables or communication cables, they are inseparable from people's work and life. With the gradual strengthening of safety awareness and prevention awareness, the requirements for the material of the cable are getting higher and higher. It must be durable and low-smoke and flame-retardant. [0003] The Chinese invention patent with the application number CN201710430554.9 discloses a low-smoke, flame-retardant and high-shielding cable sheath material and its preparation method. In parts by weight, the raw material formula of the low-smoke, flame-retardant and high-shielding cable sheath material is as follows: Polyvinyl chloride resin 100, stabilizer 5-10, plasticizer 50-55, flame retardant 5-7, pigment 0....

Claims

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Application Information

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IPC IPC(8): C08L51/00C08L23/08C08L51/06C08L23/06C08L83/04C08K5/134C08K5/372C08K5/5333H01B3/30H01B3/44H01B7/18H01B7/295
CPCC08L51/003H01B3/307H01B7/295H01B7/18H01B3/443C08L2205/035C08L2201/02C08L2201/22C08L2203/202C08L23/0853C08L51/06C08L23/06C08L83/04C08K5/1345C08K5/372C08K5/5333
Inventor 卢英斌卢蛟黄伟叶银珠
Owner ANHUI ZHONGTONG CABLE TECH
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