Semi-conductive shielding material and preparation method and application thereof

A shielding material, semi-conductive technology, applied in the semi-conductive shielding material for silane cross-linked cable insulation and its preparation, semi-conductive shielding material and its preparation field, can solve the problems such as the interface air gap between the outer shielding layer and the insulating layer, and achieve the preparation steps Simple and easy to implement, easy to use raw materials, and the effect of improving the withstand voltage level

Active Publication Date: 2022-01-14
ZHEJIANG WANMA MACROMOLECULE MATERIAL
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The semi-conductive shielding material of the present invention can solve the interface air gap problem between the outer shielding layer and the insulating layer, and at the same time make the electric field distribution on the surface of the silane cross-linked cable more uniform

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 shielding material and preparation method and application thereof
  • Semi-conductive shielding material and preparation method and application thereof
  • Semi-conductive shielding material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0050] The present invention also provides a method for preparing the semiconductive shielding material according to the present invention, which includes the step of mixing the components of the semiconductive shielding material.

[0051] Specifically, the method includes the following steps:

[0052] Mix cracked PE wax, dispersant, antioxidant and silicone to obtain a premixed product;

[0053] After banburying ethylene-butyl acrylate copolymer, maleic anhydride grafted polyethylene, ethylene-octene copolymer and conductive carbon black, they are mixed with the premixed product to obtain a jelly;

[0054] The jelly is extruded into strands and granulated to obtain a semi-conductive shielding material.

[0055] Further, the method may include the following steps:

[0056] (1) Add cracking PE wax, dispersant, antioxidant and silicone to a mixer for premixing to obtain a premixed product;

[0057] (2) Put ethylene-butyl acrylate copolymer, maleic anhydride grafted polyethyle...

Embodiment 1

[0069] Step 1: Take 1 part of cracked PE wax with a number average molecular weight of 2000-4000, 0.2 part of multifunctional dispersant TEGOdispersers 760W, 0.4 part of antioxidant 4,4'-thiobis(6-tert-butyl-m-cresol ), 2 parts of silicone are added to the mixer for premixing.

[0070] Step 2: Take 12 parts of ethylene-butyl acrylate copolymer, 4 parts of maleic anhydride grafted polyethylene, 49 parts of ethylene-octene copolymer, and 28 parts of Cabot carbon black VXC200, and put them into an internal mixer for closed mixing For 60 seconds, add the pretreated raw materials in step 1, and then close the mixing for 300 seconds again to mix the mature rubber. During the process, the cooling water needs to be turned on to ensure that the temperature of the material is lower than 175°C;

[0071] Step 3: Send the mixed cooked rubber into a single screw for extrusion and granulation. The obtained particles are screened out by a vibrating sieve to screen out irregular particles, the...

Embodiment 2

[0073] The difference between this embodiment and Example 1 is that 14 parts of ethylene-butyl acrylate copolymer, 6 parts of maleic anhydride grafted polyethylene, 53 parts of ethylene-octene copolymer, 30 parts of Cabot carbon black VXC200, and the rest Composition is all identical with embodiment 1. And the preparation process of Example 2 is the same as that of Example 1, and the semi-conductive shielding material is prepared.

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

PropertyMeasurementUnit
melt flow indexaaaaaaaaaa
melt flow indexaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to view more

Abstract

The invention provides a semiconductive shielding material and a preparation method and application thereof. The semiconductive shielding material comprises the following components: an ethylene-butyl acrylate copolymer, maleic anhydride grafted polyethylene, an ethylene-octylene copolymer, conductive carbon black, cracked PE wax, silicone, a dispersant and an antioxidant, wherein the mass ratio of the ethylene-butyl acrylate copolymer to the maleic anhydride grafted polyethylene to the ethylene-octylene copolymer is 1:(0.1-1):(2-6), preferably 1:(0.2-0.6):(3-5). According to the semiconductive shielding material disclosed by the invention, the ethylene-octylene copolymer is used as a matrix, and the ethylene-butyl acrylate copolymer and the maleic anhydride grafted polyethylene are added, so that the extrusion surface of the material is smooth and flat, the interface air gap problem of an insulating layer and an outer shielding layer is fundamentally solved, and meanwhile, the surface electric field distribution of the silane crosslinked cable is more uniform.

Description

technical field [0001] The invention relates to a semiconductive shielding material and its preparation method and application, in particular to a semiconductive shielding material with a smooth surface and non-stripping silane crosslinked cable insulation and a preparation method thereof, belonging to the technical field of cable material production. Background technique [0002] At present, with the improvement of cable industry standards and the increase of the voltage level of silane cross-linked cables, in order to solve the problem of uneven electric field distribution on the cable surface, more and more silane cross-linked cables use outer shielding to ensure the safety of the cables. However, the interface air gap between the silane cross-linked cable and the outer shield has been difficult to solve. Moreover, the existing XLPE cross-linked cable outer shielding system is technically not suitable for silane cross-linked insulated cables. In addition, silane cross-li...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L51/06C08K3/04
CPCC08L23/0815C08L2312/08C08L2203/20C08L2205/035C08K2201/001C08L23/0869C08L51/06C08K3/04
Inventor 俞杰李秀娟张斌谢威赵淑群
Owner ZHEJIANG WANMA MACROMOLECULE MATERIAL
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap