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

Insulating tape capable of self-melting with cross-linked polyethylene and its preparation process

A technology of cross-linked polyethylene and insulating tape, which is applied in the direction of climate change adaptation, etc., can solve the problems of low temperature performance, reduced insulation performance, and low compressive strength, and achieves simple preparation process, wide application range, and high compressive strength. high effect

Active Publication Date: 2022-05-17
山东七星电气科技发展有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Wrapped cable intermediate joints, in order to increase the insulation interface pressure, are forced to increase the thickness of the wrapping and the length of the lap with the main insulation, and the consumption of insulating tape is doubled compared with the fusion type intermediate joint, and the electrical performance of the insulating tape used High requirements and increased costs
[0005] Fusion-type intermediate joints will generate a high temperature of nearly 2000°C when the wire core is welded, which will be conducted along the wire core to the inner semiconducting and main insulating layers of the cable. The generation of interface gas leads to the reduction of insulation performance
Secondly, during the construction process of the XLPE insulation restoration of the intermediate joint, it is easily affected by the ambient temperature and heating equipment. It is difficult to keep the melting temperature of the insulation at a constant temperature (120°C-150°C), which leads to the instability of the main insulation interface and the generation of interface gas. gap, resulting in insulation breakdown
[0006] However, the insulating tapes currently used generally have problems such as low temperature performance, poor weather resistance, and low compressive strength. Therefore, it is urgent to develop a new type of insulating tape.

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
  • Insulating tape capable of self-melting with cross-linked polyethylene and its preparation process
  • Insulating tape capable of self-melting with cross-linked polyethylene and its preparation process
  • Insulating tape capable of self-melting with cross-linked polyethylene and its preparation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The self-melting insulating tape with cross-linked polyethylene described in Example 1 consists of the following raw materials in parts by weight:

[0032]

[0033] in:

[0034] The butyl rubber is a copolymer of isobutylene and a small amount of isoprene or butadiene, and its physical parameters are as follows: the appearance is translucent to milky white particles, and the density is 0.91g / cm 3 , the operating temperature is -40℃~+150℃, the hardness is Shore A65, the surface tension is 33mN / m, the minimum rebound temperature is -40℃, and the resilience is 60%.

[0035] Described polyisobutylene is the polymer that adopts pure isobutylene (≥99%) to be the polymer that raw material makes, and its physical parameter is as follows: appearance is colorless soft solid, and density is 0.94g / ml, glass transition temperature is-70 ℃, The specific heat capacity is 1.95kJ / (kg·K), the melting point is 43°C, the brittle temperature limit is -65°C, and the surface tension is 29...

Embodiment 2

[0048] The self-melting insulating tape with cross-linked polyethylene described in Example 2 is composed of the following raw materials in parts by weight:

[0049]

[0050]

[0051] in:

[0052]The butyl rubber is a copolymer of isobutylene and a small amount of isoprene or butadiene, and its physical parameters are as follows: the appearance is translucent to milky white particles, and the density is 0.91g / cm 3 , the operating temperature is -40℃~+150℃, the hardness is Shore A65, the surface tension is 33mN / m, the minimum rebound temperature is -40℃, and the resilience is 60%.

[0053] Described polyisobutylene is the polymer that adopts pure isobutylene (≥99%) to be the polymer that raw material makes, and its physical parameter is as follows: appearance is colorless soft solid, and density is 0.94g / ml, glass transition temperature is-70 ℃, The specific heat capacity is 1.95kJ / (kg·K), the melting point is 43°C, the brittle temperature limit is -65°C, and the surface...

Embodiment 3

[0063] The self-melting insulating tape with cross-linked polyethylene described in Example 3 consists of the following raw materials in parts by weight:

[0064]

[0065]

[0066] in:

[0067] The butyl rubber is a copolymer of isobutylene and a small amount of isoprene or butadiene, and its physical parameters are as follows: the appearance is translucent to milky white particles, and the density is 0.91g / cm 3 , the operating temperature is -40℃~+150℃, the hardness is Shore A65, the surface tension is 33mN / m, the minimum rebound temperature is -40℃, and the resilience is 60%.

[0068] Described polyisobutylene is the polymer that adopts pure isobutylene (≥99%) to be the polymer that raw material makes, and its physical parameter is as follows: appearance is colorless soft solid, and density is 0.94g / ml, glass transition temperature is-70 ℃, The specific heat capacity is 1.95kJ / (kg·K), the melting point is 43°C, the brittle temperature limit is -65°C, and the surface t...

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
densityaaaaaaaaaa
hardnessaaaaaaaaaa
surface tensionaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of insulating tape preparation, and in particular relates to an insulating tape capable of self-melting with cross-linked polyethylene and a preparation process thereof. The self-melting insulating tape with cross-linked polyethylene according to the present invention is composed of the following raw materials in parts by weight: 100 parts of butyl rubber, 60-70 parts of polyisobutylene, 20-30 parts of polyethylene, 50-70 parts of filler, 0.5-2 parts of stearic acid, 4-6 parts of zinc oxide, 0.5-1 part of antioxidant, 3-5 parts of vulcanization accelerator, 10-12 parts of maleic anhydride graft compatibilizer. The insulating strip material which can self-melt with cross-linked polyethylene has the characteristics of self-melting at room temperature, high compressive strength, and wide application range. In addition, it also has good insulation, high temperature resistance, and water resistance. , flexibility, weather resistance, oxygen resistance, air tightness and polarity resistance.

Description

technical field [0001] The invention belongs to the technical field of insulating tape preparation, and in particular relates to an insulating tape capable of self-melting with cross-linked polyethylene and a preparation process thereof. Background technique [0002] Insulating materials are electrical insulating materials. According to national standards, the definition of insulating materials is: materials used to electrically insulate devices, that is, materials that can prevent current from passing, and their resistivity is very good. Different electrical equipment has different requirements for the performance of insulating materials. Insulating materials used in high-voltage electrical equipment such as high-voltage motors and high-voltage cables require high breakdown strength and low dielectric loss. Low-voltage electrical appliances use mechanical strength, elongation at break, heat resistance grade, etc. as the main requirements for insulating materials. [0003]...

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): C08L23/22C08L23/06C08K5/09C08K3/22C08K5/13
CPCC08L23/22C08L2201/08C08L2201/14C08L2205/025C08K2003/2296C08L23/06C08K5/09C08K3/22C08K5/13Y02A30/14
Inventor 孙晓维葛旺泉
Owner 山东七星电气科技发展有限公司
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