Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Semi-conductive internal shielding material composition, semi-conductive internal shielding material and manufacturing method thereof, as well as medium and low-pressure and 110KV cable

A low-voltage cable, inner shielding technology, applied in the direction of power cables with shielding layer/conductive layer, etc., can solve the problem of not being able to use 110kV rated cables, and achieve the effect of high cleanliness

Active Publication Date: 2014-03-26
CHINA PETROLEUM & CHEM CORP +1
View PDF8 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The semi-conductive cross-linkable inner shielding material obtained by this production process cannot be used for 110 kV withstand voltage cables

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Semi-conductive internal shielding material composition, semi-conductive internal shielding material and manufacturing method thereof, as well as medium and low-pressure and 110KV cable
  • Semi-conductive internal shielding material composition, semi-conductive internal shielding material and manufacturing method thereof, as well as medium and low-pressure and 110KV cable
  • Semi-conductive internal shielding material composition, semi-conductive internal shielding material and manufacturing method thereof, as well as medium and low-pressure and 110KV cable

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0043] According to the preparation method of the semi-conductive inner shielding material for 110 kV cables of the present invention, the present invention utilizes the self-weight , the conditions for mixing and contacting with the crosslinking agent in a high-speed mixer are not particularly limited. Preferably, the conditions for mixing and contacting in step (2) include: contact temperature is 60-80°C, preferably 65-70°C; contact time Specifically, the mixed contact can be first mixed with the semi-conductive inner shielding cable material premix granules for 110 kV cables and the cross-linking agent for 5-8 minutes, and then left to stand after mixing to allow the cross-linking agent to soak into the 110 kV cables. Semi-conductive inner shielding material 2-3h, preferably 2.5-3h.

[0044] According to the method for preparing a semi-conductive inner shielding material for 110 kV cables of the present invention, preferably, the method further includes vacuum packaging the...

Embodiment 5

[0053] The extrusion process parameters of Example 5 are the same as those of Example 1 above, but all operations are carried out in ordinary workshops without providing dust-free and positive pressure preparation conditions.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a semi-conductive internal shielding material composition. The composition contains an ethylene-butyl acrylate copolymer, an ethylene-vinyl acetate copolymer, an antioxidant, a cross-linking agent, a dispersant, lubricating oil, an anti-copper agent and acetylene carbon black, wherein relative to 100 parts by weight of ethylene-acrylate, the content of the ethylene-vinyl acetate copolymer is 50-65 parts by weight, the content of the acetylene carbon black is 50-72 parts by weight, the content of the antioxidant is 0.1-1.5 parts by weight, the content of the cross-linking agent is 0.5-2.5 parts by weight, the content of the dispersant is 1-10 parts by weight, the content of the lubricating oil is 1-12 parts by weight, and the content of the anti-copper agent is 0.05-1.2 parts by weight. The invention further relates to a semi-conductive internal shielding material for a medium and low-pressure and 110KV cable and a manufacturing method thereof, as well as the medium and low-pressure and 110KV cable. When the semi-conductive internal shielding material provided by the invention is used for extruding the cable, and the phenomenon of scorching can be avoided.

Description

technical field [0001] The invention relates to a semiconductive inner shielding material composition, a semiconductive inner shielding material for medium and low voltage cables, a method for making the same, and medium and low voltage cables; a semiconductive inner shielding material for 110 kV cables, a method for preparing the same, and a 110 kV cable. Background technique [0002] Wire and cable are indispensable basic materials for transmitting electric energy, transmitting information and manufacturing various electrical instruments, and are widely used in electric power, construction, petrochemical, transportation and other fields. A cable with reliable quality should not only contain excellent insulating materials, but also contain shielding materials that can make the electric field evenly distributed and improve the electrical strength and service life of the cable. Copolymers of ethylene and strong polar monomers such as ethylene-vinyl acetate copolymer (EVA), et...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08L23/08C08L33/08C08L31/04C08K13/02C08K3/04C08K5/25C08K5/14C08K5/20C08J3/24B29C47/92H01B9/02B29C48/92
CPCB29C48/92C08L23/0869C08J3/246C08J2323/08C08J2423/08C08K2201/001C08L2203/202H01B9/02C08L23/0853C08K13/02C08K3/04
Inventor 赵和英于涛何震海
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com