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Cable insulating material as well as preparation method and application thereof

A cable insulation and elastomer technology, applied in the direction of insulators, organic insulators, plastic/resin/wax insulators, etc., can solve the problems of elongation at break, thermal aging performance, water tree resistance, poor volume resistivity, etc., and achieve preparation The effect of simple process and low energy consumption

Pending Publication Date: 2021-09-28
ZHEJIANG WANMA MACROMOLECULE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The embrittlement temperature of the thermoplastic insulating material for medium and high voltage can only reach -40°C, and the thermoplastic insulating material for medium and high voltage has poor elongation at break, thermal aging performance, water tree resistance, and volume resistivity.

Method used

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  • Cable insulating material as well as preparation method and application thereof
  • Cable insulating material as well as preparation method and application thereof
  • Cable insulating material as well as preparation method and application thereof

Examples

Experimental program
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preparation example Construction

[0083] In some specific embodiments, the preparation method includes the following steps:

[0084] Mix polypropylene, elastomer, lubricant, compatibilizer and antioxidant to obtain a mixed product; wherein, the mixing time is 5-10min, and the mixing temperature is 45-55°C; when mixing, in order to make the mixed More evenly, you can use stirring and other methods. When stirring, the stirring rate can be 40-60RPM, so that the material can be evenly dispersed;

[0085] The mixed product is extruded, granulated, and then dried to obtain a cable insulation material; wherein, the drying temperature is 65-75° C., and the drying time is 10-14 hours.

[0086] The conditions for extrusion and granulation, such as temperature, are not particularly limited in the present invention, and may be common conditions in the art. For processing equipment, the present invention is not particularly limited, and it can be some processing equipment commonly used in this field. Specifically, the pro...

Embodiment 1

[0094]This embodiment 1 provides an environment-friendly insulating material for high-voltage power cables. In terms of parts by mass, its raw material composition includes the following components: copolymerized polypropylene (Yangzi Petrochemical Co., Ltd., brand J340, the same below): 50 parts; Polypropylene (Yanshan Petrochemical Co., Ltd., brand SP179, the same below): 30 parts; hydrogenated styrene-butadiene block copolymer (Taiwan Rubber Co., Ltd., brand 7131): 10 parts; ethylene-octene copolymer Lubricant (Dow Chemical Company of the United States, brand 8200): 10 parts; lubricant (15# white oil): 5 parts; lubricant (methyl silicone oil 201-50): 5 parts; compatibilizer (polypropylene wax 215) : 5 parts; antioxidant TBM-6: 0.2 parts; antioxidant MB: 0.2 parts.

[0095] The specific preparation method is: prepare and weigh various materials according to the above formula for later use; after fully mixing each component in a high-speed mixer, the mixing time is 8 minutes,...

Embodiment 2

[0097] This embodiment 2 provides an environment-friendly insulating material for high-voltage power cables. In parts by mass, its raw material composition includes the following components: copolymerized polypropylene: 40 parts; homopolypropylene: 30 parts; hydrogenated styrene-butadiene Block copolymer (Taiwan Rubber Co., Ltd., grade 7131): 15 parts; Ethylene-octene copolymer (Exxon Mobil Corporation, grade 6102, the same below): 15 parts; lubricant (15# white oil) : 5 parts; lubricant (methyl silicone oil 201-50): 5 parts; compatibilizer (polypropylene wax 215): 5 parts; antioxidant TBM-6: 0.2 parts; antioxidant MB: 0.2 parts.

[0098] According to the same method as in Example 1, the cable insulating material was prepared. The relevant properties of the prepared cable materials are shown in Table 1.

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Abstract

The invention provides a cable insulating material as well as a preparation method and application thereof. The cable insulating material comprises the following components in parts by mass: 50- to 80 parts of polypropylene, 20 to 50 parts of an elastomer, 5 to 10 parts of a lubricant, 5 to 10 parts of a compatilizer, and 0.2 to 1.0 part of an antioxidant. The cable insulating material disclosed by the invention is simple in raw material components, excellent in comprehensive performance, excellent in flexibility and high in water tree resistance; the preparation method of the cable insulating material is simple in preparation process, low in energy consumption and free of pollution, and the prepared cable insulating material can be recycled and is suitable for mass production; and furthermore, the application voltage grade of the cable insulation material is not limited to high voltage, and the cable insulation material can also be applied to middle and low voltage cables and home decoration cables.

Description

technical field [0001] The invention relates to a cable insulation material and its preparation method and application, in particular to an environment-friendly high-voltage power cable insulation material and its preparation method and application, belonging to the field of cable materials. Background technique [0002] Power cables are cables used to transmit and distribute electric energy. Power cables are often used in urban underground power grids, outgoing lines of power stations, internal power supply of industrial and mining enterprises, and underwater transmission lines across rivers and seas. In power lines, the proportion of cables is gradually increasing. Power cables are cable products used to transmit and distribute high-power electric energy in the backbone lines of power systems, including 1-500kV and above various voltage levels and various insulated power cables. [0003] In the prior art, most high-voltage insulation materials for power cables are polyeth...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08L23/12C08L53/02C08L23/08C08L91/00C08L83/04C08K5/378H01B3/44
CPCC08L23/14C08L23/12H01B3/441C08L2203/202C08L53/025C08L23/0815C08L91/00C08L83/04C08K5/378
Inventor 刘敬锐陈文卿刘美兵李秀娟郑阳谢威刘焕新王国海熊志辉
Owner ZHEJIANG WANMA MACROMOLECULE MATERIAL
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