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

A modified polypropylene insulated cable with high ampacity and the modified polypropylene insulating material used therein

An insulating cable and polypropylene technology, applied in the direction of insulated cables, insulators, insulated conductors, etc., can solve problems such as hidden safety hazards, environmental pollution, limited performance, etc., and achieve the effects of improving quality, reducing costs, and high structural stability

Active Publication Date: 2022-03-01
浙江万马股份有限公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of using a large number of cross-linked polyethylene with high cost and limited performance in the existing crimping cables, causing environmental pollution, and there are certain safety hazards in the actual use process, the present invention provides a high-carrying-capacity Modified polypropylene insulated cable, and a modified polypropylene insulating material

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
  • A modified polypropylene insulated cable with high ampacity and the modified polypropylene insulating material used therein
  • A modified polypropylene insulated cable with high ampacity and the modified polypropylene insulating material used therein
  • A modified polypropylene insulated cable with high ampacity and the modified polypropylene insulating material used therein

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] a kind of like figure 1 High ampacity modified polypropylene insulated cables shown, which include:

[0055] Conductor 1, inner shielding layer 2, modified insulating layer 3, insulating shielding layer 4, metal shielding layer 5, tape layer 6, inner sheath 7, armoring layer 8 and outer sheath 9 arranged in sequence from inside to outside ;

[0056] The conductor 1 is a common cable conductor 1, which can be stranded copper, single copper, copper-plated after twisting, copper-clad aluminum, etc.;

[0057] The inner shielding layer 2 is tightly wrapped on the outer surface of the conductor 1 and is prepared from a common shielding material, preferably a polypropylene shielding material. The polypropylene shielding material is a thermoplastic polypropylene semiconductor 1 electrical shielding material, and the inner shielding layer 2 The setting of the conductor 1 uniforms the electric field on the outer surface of the conductor 1, and avoids the problem of partial disc...

Embodiment 2

[0080] In the ethylene-propylene rubber copolymer, Si-C-Al composite filler is further doped, and the addition amount of Si-C-Al composite filler is 12 to 15wt% of the ethylene-propylene rubber copolymer. The doping of composite fillers can further improve the thermal conductivity and heat dissipation performance of the modified insulating layer, and to a certain extent improve its insulation and electrical breakdown resistance;

[0081] The above-mentioned Si-C-Al composite filler is prepared by the following process:

[0082] Mix coke powder, aluminum powder and elemental silicon powder into a mixed powder, and control the mass ratio of coke powder, aluminum powder and elemental silicon powder in the mixed powder to 1: (1.9~2.1): (6.9~7.1), this implementation The mass ratio of coke powder, aluminum powder and elemental silicon powder used in the example is 1:2:7. After the above-mentioned mixture is uniformly mixed into a mixed powder, it is pressed to form a block material...

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 belongs to the field of cables, in particular to a modified polypropylene insulated cable with high ampacity and the modified polypropylene insulating material used therein. The cable includes: a conductor, a modified insulation layer, an armor layer and an outer sheath arranged sequentially from the inside to the outside; the outer sheath is a flame-retardant outer sheath; the modified insulation layer is a modified polypropylene Insulating layer, modified polypropylene insulating layer is prepared from modified polypropylene insulating material. The modified polypropylene insulating material is made of polypropylene block copolymerized vinyl monomer; the content of the vinyl monomer is 2-3 wt% of the polypropylene. In the present invention, the cross-linked polyethylene is replaced by the modified polypropylene, which reduces the cost and improves the quality of the insulating layer; the carrying capacity and the actual withstand working temperature of the cable are significantly improved; the modified polypropylene can be recycled and reused, and is more environmentally friendly.

Description

technical field [0001] The invention belongs to the field of cables, in particular to a modified polypropylene insulated cable with high ampacity and the modified polypropylene insulating material used therein. Background technique [0002] At this stage, most medium-voltage cables use cross-linked polyethylene as the insulating material. Since the material is made of polyethylene as the base material, the process is cross-linked through chemical reactions to form cross-linked polyethylene, which will cause the insulating layer to be damaged during cross-linking processing. Toxic substances are produced during the process, which brings difficulties to its later recycling and environmental protection; at the same time, XLPE cables will still have insulation hazards such as "water branches" during operation. For cities with abundant groundwater and high cable coverage Power supply reliability has a certain impact. In addition, cross-linked polyethylene also has the problem of ...

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 Patents(China)
IPC IPC(8): H01B7/17H01B3/44H01B7/02H01B7/04H01B7/295H01B7/42
CPCH01B3/441H01B7/02H01B7/295H01B7/04H01B7/428H01B7/17
Inventor 李金堂王福志刘焕新孟益标余德平梁增显王玲红
Owner 浙江万马股份有限公司
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