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An insulated and cold-resistant flexible cable

A flexible cable and cold-resistant technology, applied in the direction of insulators, organic insulators, plastic/resin/wax insulators, etc., can solve the problem of material softness, increase the risk of plasticizer precipitation, increase the risk of plasticizer precipitation, etc. problems, to achieve high mechanical properties and anti-aging performance, reduce hardness, high elongation at break

Active Publication Date: 2018-03-06
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

Polyvinyl chloride can produce hard PVC wire and cable by adjusting the content of plasticizer, and can also produce soft PVC wire and cable, but increasing the content of plasticizer will increase the risk of plasticizer precipitation. To reduce this potential risk, the amount of plasticizer must be controlled
However, if the amount of plasticizer added is reduced, the softness of the material is difficult to reflect, and if a large amount of plasticizer is added, the risk of plasticizer precipitation will increase as mentioned above, so how to determine the amount of plasticizer added and the material The problem of finding a reasonable balance point between hardness has long plagued the industry

Method used

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  • An insulated and cold-resistant flexible cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Weigh 14.811g of phthalic anhydride and 10.514g of diethanolamine, first dissolve diisopropanolamine in 40mL of DMAc, dissolve it and pour it into a three-neck flask, then dissolve phthalic anhydride in 40ml of DMAc, and then It was slowly added dropwise into a three-necked flask, and reacted at room temperature for 3 hours under stirring to obtain AB 2 type monomer;

[0026] (2) Then add 60mL of toluene to the three-necked flask first, and then add 1.49g of trimethylolpropane as the nuclear molecule (nuclear molecule and AB 2 The molar ratio of the type monomer is 1:9), wait until the trimethylolpropane is completely dissolved, add 0.163g p-toluenesulfonic acid, heat to 130 degrees, condense and reflux for 24h, separate the generated water with a water separator, and finally Purified by vacuum distillation, this product is the second generation of hydroxyl-terminated hyperbranched polymer; (before the second step of reaction, first inject toluene into the water se...

Embodiment 2

[0030] (1) Weigh 22.217g of phthalic anhydride and 15.771g of diethanolamine, first dissolve diisopropanolamine in 40mL of DMAc, dissolve it and pour it into a three-neck flask, then dissolve phthalic anhydride in 40ml of DMAc, and then It was slowly added dropwise into a three-necked flask, and reacted at room temperature for 3 hours under stirring to obtain AB 2 type monomer;

[0031] (2) Then add 60mL of toluene to the three-necked flask first, and then add 0.958g of trimethylolpropane as the nuclear molecule (nuclear molecule and AB 2 The molar ratio of the type monomer is 1:21), wait until the trimethylolpropane is completely dissolved, add 0.245g p-toluenesulfonic acid, heat to 130 degrees, condense and reflux for 24h, separate the generated water with a water separator, and finally Purified by vacuum distillation, this product is the second generation of hydroxyl-terminated hyperbranched polymer; (before the second step of reaction, first inject toluene into the water ...

Embodiment 3

[0035] (1) Weigh 22.217g of phthalic anhydride and 15.771g of diethanolamine, first dissolve diisopropanolamine in 40mL of DMAc, dissolve it and pour it into a three-neck flask, then dissolve phthalic anhydride in 40ml of DMAc, and then It was slowly added dropwise into a three-necked flask, and reacted at room temperature for 3 hours under stirring to obtain AB 2 type monomer;

[0036] (2) Then add 60mL of toluene to the three-necked flask first, and then add 0.447g of trimethylolpropane as the nuclear molecule (nuclear molecule and AB 2 The molar ratio of the type monomer is 1:45), after the trimethylolpropane is completely dissolved, add 0.245g p-toluenesulfonic acid, heat to 130 degrees, condense and reflux for 24h, separate the generated water with a water separator, and finally Purified by vacuum distillation, this product is the second generation of hydroxyl-terminated hyperbranched polymer; (before the second step of reaction, first inject toluene into the water separ...

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Abstract

The invention relates to the technical field of cable rubber, in particular to an insulated cold-resistant flexible cable.The insulated cold-resistant flexible cable comprises an insulating layer consisting of 60-70 parts of polyvinyl chloride resin, 3-8 parts of rosin, 6-10 parts of hyperbranched polymer grafted SBS (styrene-butadiene-styrene block copolymer), 20-30 parts of fire retardants, 1-5 parts of antioxidants and 1-5 parts of anti-irradiation agents.Modified hyperbranched polymers instead of conventional plasticizers are added into the insulating layer of the insulated cold-resistant flexible cable to achieve better plastifying effect, and under synergism of all components, hardness of the insulating material is decreased, so that both flexibility and excellent electric insulation effect are achieved.The insulated cold-resistant flexible cable attains not only flexibility and electric insulation property but also high mechanical property and ageing resistance, such as high tensile strength and large elongation at break.

Description

technical field [0001] The invention relates to the technical field of rubber for cables, in particular to an insulated and cold-resistant flexible 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 polyethylene, polyvinyl chloride, ethylene-propylene rubber and other materials. Polyvinyl chloride is a general-purpose plastic with advantages such as low cost, convenient processing, excellent mechanical properties, corrosion resistance and excellent insulation. It is widely used in construction, light industry, chemical industry, electrical appliances, wire and cable and other fields. Polyvinyl chloride can produce hard PVC wire and cable by adjusting the content of plasticizer, and can also produce soft PVC...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L93/04C08L87/00C08K3/22C08K5/372C08K5/3477C08G81/02C08G83/00H01B3/44
CPCC08G81/024C08G83/005C08L27/06C08L2203/202C08L2205/03H01B3/443C08L93/04C08L87/00C08K2003/2227C08K5/372C08K5/3477
Inventor 李军强李民陈宁江璇王军生房玉祯董太波
Owner JINAN CITY CHANGQING DISTRICT POWER SUPPLY CO OF STATE GRID SHANDONG ELECTRIC POWER CO
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