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A kind of thermoplastic cable insulating material and preparation method thereof

A cable insulation and preparation process technology, applied in plastic/resin/wax insulators, insulators, organic insulators, etc., can solve the problems affecting cable transportation, installation and use, large cable bending radius, and high modulus

Active Publication Date: 2022-07-22
JIANGSU ZHONGTIAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, thermoplastic soluble and fusible polymer materials have become the first choice. However, thermoplastic polymer materials usually have physical and mechanical properties such as relatively hard and high modulus, which lead to large bending radius and poor thermal stability of cables, which affect cable transportation, installation and maintenance. use

Method used

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  • A kind of thermoplastic cable insulating material and preparation method thereof
  • A kind of thermoplastic cable insulating material and preparation method thereof

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preparation example Construction

[0035] The present invention also provides a method for preparing the thermoplastic cable insulating material described in the above technical solution, comprising: mixing and banburying polypropylene resin, hydrogenated styrene-butadiene-styrene block copolymer and antioxidant, Get cable insulation.

[0036] Wherein, the characteristics of the polypropylene resin, hydrogenated styrene-butadiene-styrene block copolymer and antioxidant are the same as those described in the above technical scheme, and the characteristics of the type, amount and source of antioxidant Repeat.

[0037] In the present invention, the banburying can be carried out by means of an internal mixer, and the banburying is mixed in a mixer of a torque rheometer. The temperature of the banburying is preferably 200 to 250°C, and more preferably 210 to 230°C. The time of the banburying is preferably 10-15 min. In the present invention, the rotational speed of the banburying is preferably 40 to 70 r / min, mor...

Embodiment 1

[0040] Raw materials: 100 parts of copolymerized PP, melt index is 2.2g / 10min, ethylene content is 4%; 10 parts SEBS, molecular weight is 250,000, styrene content is 30%; 0.5 part of antioxidant 1010;

[0041] The above-mentioned raw materials were put into an internal mixer, and were mixed at 210° C. and a rotating speed of 60 rpm for 12 minutes, and the cable insulating material was obtained by melt blending.

Embodiment 2

[0043] Raw materials: 100 parts of copolymerized PP, melt index is 2.2g / 10min, ethylene content is 4%; 15 parts SEBS, molecular weight is 250,000, styrene content is 30%; 0.5 part of antioxidant 1010;

[0044] The above-mentioned raw materials were put into an internal mixer, and were mixed at 210° C. and a rotating speed of 60 rpm for 12 minutes, and the cable insulating material was obtained by melt blending.

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Abstract

The invention provides a thermoplastic cable insulating material and a preparation method thereof. The thermoplastic cable insulating material provided by the present invention is prepared from raw materials comprising the following components in parts by mass: 100 parts of polypropylene resin; 10-50 parts of hydrogenated styrene-butadiene-styrene block copolymer; 0.2-50 parts of antioxidant 0.6 servings. The present invention adopts specific hydrogenated styrene-butadiene-styrene block copolymer (ie SEBS) and antioxidant to co-modify polypropylene resin in a certain proportion, which can effectively reduce the hardness, modulus and thermal deformation of the material, And improve the heat resistance and thermal stability of the material, so that it can meet the performance requirements of the cross-linked polyethylene cable insulation material. The problem of difficulty in recycling and processing polyethylene electrical insulating materials.

Description

technical field [0001] The invention relates to the technical field of cable materials, in particular to a thermoplastic cable insulating material and a preparation method thereof. Background technique [0002] As we all know, XLPE cable is widely used in medium and high voltage, ultra-high voltage and even ultra-high voltage AC power transmission. Good sex and so on. However, cross-linked polyethylene is a thermosetting polymer material with insoluble and non-melting properties. Therefore, the recovery and reuse of thousands of tons of waste cross-linked polyethylene cables that have expired has become a thorny world problem, which is harmful to the environment. Cause serious pollution; at the same time, some defective products in the production process of XLPE cable lead to waste and environmental pollution due to non-recyclable cable materials. [0003] Therefore, in order to deal with the problems of insolubilization, non-melting and difficult recycling of XLPE cable m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/16C08L53/02C08K5/134H01B3/44
CPCC08L23/14H01B3/441C08L2203/202C08L2201/08C08L53/025C08K5/1345
Inventor 赵学广张文龙闫志雨高丽平陆金杰赵洪
Owner JIANGSU ZHONGTIAN TECH CO LTD
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