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

Coated conductor with voltage stabilized inner layer

A technology for conductors and inner layers, applied in the field of polymer compositions, can solve problems such as poor compatibility, and achieve the effect of improving compatibility and reducing voltage stabilizers

Active Publication Date: 2013-07-31
UNION CARBIDE CORP
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional voltage stabilizers, such as the polycyclic aromatic compound family, such as acene, are poorly compatible with polyolefins

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
  • Coated conductor with voltage stabilized inner layer
  • Coated conductor with voltage stabilized inner layer
  • Coated conductor with voltage stabilized inner layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] Embodiment 1 contains 1.4% by weight 2-[4,6-bis(2,4-xylyl)-1,3,5-triazin-2-yl]-5-(octyloxy)phenol (CAS2725-22-6, available LDPE from Cytec Industries).

Embodiment 2

[0088] Embodiment 2 contains 2.8% by weight LDPE.

[0089] Comparative Sample A is LDPE without voltage stabilizer mixed at a temperature of 140°C.

[0090] Comparative Sample B is LDPE with 1 wt% Chimassorb 944, a hindered amine stabilizer.

[0091] Comparative Sample C is LDPE with 1% by weight Cyassorb UV-3346, a light stabilizer.

[0092] Comparative sample A (CS-A)

[0093] A series of 18 samples of Comparative Sample A was fitted with a 2-parameter Weibull failure distribution. Its data exhibited significant non-linearity, resulting in a poor correlation (r^2 of 0.75). A 3-parameter Weibull failure distribution was found to be more suitable for describing the failure distribution (r^2 is 0.88), offset t0=8.8kV. It was determined that the 3-parameter Weibull characteristic voltage of comparative sample A was 11.7kV, and its 90% confidence interval was 10.7-13.7kV.

[0094] Comparative sample B (CS-B)

[0095] The composition of Comparative Sample B was prepared in...

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

Disclosed are polymeric compositions with improved breakdown strength. The polymeric compositions contain a polyolefin and a voltage stabilizing agent. The voltage stabilizing agent contains a triazine. The triazine may include a substituent that enables keto-enol tautomerism, which provides the voltage stabilizing agent with additional energy dissipation capacity. The present polymeric compositions exhibit improved breakdown strength when applied as an insulating layer for power cable.

Description

Background technique [0001] A typical power cable includes one or more conductors in a cable core surrounded by one or more layers of polymeric material. Medium voltage (6-36kV) and high voltage (greater than 36kV) and extra-high voltage (greater than 220kV) cables usually consist of a core surrounded by an inner semiconductive layer surrounded by an insulating layer and then an outer semiconductive layer and the outermost layer (or protective case). [0002] The load carrying capacity of the cable system is limited in part by the heat transfer away from the conductors. Polyolefins, such as polyethylene, are often used in insulating and / or semiconducting layers. Polyethylene has a low dielectric permittivity and relatively high electrical breakdown strength. [0003] Voltage stabilizers of polyolefin compositions are known which increase the electrical breakdown strength of insulation layers in power cables. However, conventional voltage stabilizers such as the family of p...

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): H01B3/44C08K5/3492H01B7/28H01B9/00
CPCH01B7/2813C08K5/3492H01B3/441C08L23/02H01B3/30H01B7/28H01B9/00
Inventor T.J.珀森J.M.科根
Owner UNION CARBIDE 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