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Insulated and flame-retardant cable

A technology for flame-retardant cables and insulating layers, which is applied in the direction of insulated cables, insulators, and insulated conductors. Equipment requirements, the effect of reducing production costs

Active Publication Date: 2016-06-22
JINAN CITY CHANGQING DISTRICT POWER SUPPLY CO OF STATE GRID SHANDONG ELECTRIC POWER CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above insulated cables with the addition of inorganic flame retardants, the electrical insulation performance decreases after soaking, the tensile strength becomes poor, and the compatibility is not good, which leads to processing difficulties. This application provides an insulating layer made of polyamide The cable of resin and organic flame retardant of hyperbranched polyether modified melamine has good flame retardancy and electrical insulation performance, and the electrical insulation performance is stable under wet conditions, and the inorganic flame retardant used has good compatibility with the base material. sex

Method used

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  • Insulated and flame-retardant cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Add 20ml of anhydrous dichloromethane into the three-necked flask, and add 1.34g (0.01mol) of trihydroxypropane to dissolve it all, and take the monomer 3-methyl-3-hydroxymethyloxetane Alkanes 9.18g (0.09mol) and dissolved in 50ml of anhydrous dichloromethane, poured into the constant pressure dropping funnel (the molar ratio of nuclear molecules and monomers is 1:9), equipped with a thermometer, under N 2 Under protected conditions, add 6.24g (0.044mol) BF with a syringe 3 ·OEt 2 , keeping the temperature constant at 30°C, adjusting the constant pressure dropping funnel to control the dropping speed, the dropping time is 4 hours, and the heat preservation reaction is 48 hours to obtain the hyperbranched polymer;

[0024] (2) Succinic anhydride modified hyperbranched polymer

[0025] Weigh 12.01g (0.12mol) of succinic anhydride and dissolve it in 50ml of anhydrous dichloromethane, add it to the hyperbranched polymer synthesized in step (1), then repeatedly vacuumi...

Embodiment 2

[0030] (1) Add 20ml of anhydrous dichloromethane into the three-necked flask, and add 0.67g (0.005mol) of trihydroxypropane to dissolve it all, and take the monomer 3-methyl-3-hydroxymethyloxetane Alkanes 10.71g (0.105mol) and dissolved in 50ml of anhydrous dichloromethane, poured into the constant pressure dropping funnel (the molar ratio of nuclear molecules and monomers is 1:21), equipped with a thermometer, in N 2 Under protected conditions, add 7.28g (0.051mol) BF with a syringe 3 ·OEt 2 , keep the temperature constant at 30°C, adjust the constant pressure dropping funnel to control the dropping speed, after the dropping time is 4 hours, keep the temperature for 48 hours, and obtain the hyperbranched polymer;

[0031] (2) Weigh 24.016g (0.24mol) of succinic anhydride and dissolve it in 50ml of anhydrous dichloromethane, add it to the hyperbranched polymer synthesized in step (1), then repeatedly vacuumize and blow nitrogen to remove Air in the reaction device, control t...

Embodiment 3

[0036] (1) Add 20ml of anhydrous dichloromethane into the three-necked flask, and add 0.268g (0.002mol) of trihydroxypropane to dissolve it all, and take the monomer 3-methyl-3-hydroxymethyloxetane Dissolve 9.18g (0.09mol) of alkane in 50ml of anhydrous dichloromethane, pour it into a constant pressure dropping funnel (the molar ratio of nuclear molecules to monomers is 1:45), install a thermometer, and 2 Under protected conditions, add 6.24g (0.044mol) BF with a syringe 3 ·OEt 2 , keep the temperature constant at 30°C, adjust the constant pressure dropping funnel to control the dropping speed, after the dropping time is 4 hours, keep the temperature for 48 hours, and obtain the hyperbranched polymer;

[0037] (2) Weigh 48.032g (0.48mol) of succinic anhydride and dissolve it in 100ml of anhydrous dichloromethane, add it to the hyperbranched polymer synthesized in step (1), then repeatedly vacuumize and blow nitrogen to remove Air in the reaction device, control the reaction ...

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Abstract

The invention relates to the technical field of materials for cables, in particular to an insulated and flame-retardant cable. Raw materials of an insulating layer comprise 100 parts of an ethylene-methacrylic acid copolymer, 20-30 parts of polyamide resin, 60-80 parts of hyperbranched polyether modified melamine and 1-10 parts of an auxiliary. According to the insulated and flame-retardant cable, halogen-containing polyvinyl chloride and other halogen-containing base materials are not required to be added, and a better flame retardant effect can be realized; under the synergistic effect of all components, the water absorbency of the insulating material is reduced, the high flame retardant effect is realized, meanwhile, the high electric insulation effect is realized, and the insulating material still has better electric insulation stability under the wet condition; the problems that mixing is difficult, the extrusion pressure is high and the like in the processing process are solved, the production process is simplified, the requirements for equipment are reduced, the production cost is reduced, and the purpose of industrial production is achieved.

Description

technical field [0001] The invention relates to the technical field of cable materials, in particular to an insulating flame-retardant cable. Background technique [0002] Insulation materials for cables are generally required to have excellent long-term heat aging resistance, radiation resistance, stable electrical properties, flame retardancy and insulation properties. At present, the base materials of insulation materials commonly used for cables are materials such as polyethylene, polyvinyl chloride, and ethylene-propylene rubber. However, the main disadvantage of these base materials is that they are easy to catch fire and cause fires. The use of halogen-containing flame-retardant polyvinyl chloride, although it has a certain flame-retardant effect, compared with the use of polyolefin and other halogen-free base materials, the use of polyvinyl chloride base materials will produce toxic hydrogen chloride gas and a large amount of hydrogen chloride when burned. The s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L77/00C08L87/00C08G83/00C08G65/48H01B3/44H01B7/295
CPCC08G65/48C08G83/00C08L23/0869C08L2201/02C08L2203/202C08L2205/03H01B3/447H01B7/295C08L77/00C08L87/00
Inventor 薄其波齐殿彬司家栋田梦雨刘国香高同亮
Owner JINAN CITY CHANGQING DISTRICT POWER SUPPLY CO OF STATE GRID SHANDONG ELECTRIC POWER CO
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