Unlock instant, AI-driven research and patent intelligence for your innovation.

Crosslinking polyethylene insulating plastic for electric power cable

A cross-linked polyethylene and power cable technology, applied in the direction of organic insulators, plastic/resin/wax insulators, etc., can solve the problem that polyethylene does not have processing fluidity

Inactive Publication Date: 2007-01-31
上海新上化高分子材料有限公司
View PDF0 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The application of polyethylene cross-linking technology has greatly improved the maximum service temperature and mechanical properties of wires and cables. However, considering the high crystallinity of high-density polyethylene, such polyethylene can be used for 110KV high voltage after cross-linking. Electric trees are easy to occur in occasions, and low-density polyethylene does not have suitable processing fluidity. How to choose appropriate raw materials and proportions to obtain cross-linked polyethylene insulating plastics suitable for power cables of 110KV and below with excellent performance, It is an urgent problem that needs to be solved

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Plastic formulation: (parts by weight)

[0020] Polyethylene 100 parts;

[0021] 1 part of 2,5-dimethyl-2,5 bis(tert-butylperoxy)hexyne;

[0022] Dilauryl thiodipropionate 2 parts;

[0023] Clay 20 parts.

[0024] The polyethylene resin is pretreated and dried to a water content of less than 500ppm, then fully mixed with 2,5-dimethyl-2,5 bis(tert-butylperoxy)hexyne, dilauryl thiodipropionate, and clay, and then put into extrusion The extruder is extruded and granulated at 100°C, and the finished product after granulation is dried until the moisture content is less than 200ppm, and stored in a purified packaging bag.

[0025] serial number

[0026] The above data meet the requirements of GB / T11017 2002 for insulating materials.

Embodiment 2

[0028] Polyethylene 100 parts;

[0029] 1.2 parts of 2,5-dimethyl-2,5 bis(tert-butylperoxy)hexane;

[0030] 2 parts of distearyl thiodipropionate;

[0031] Talcum powder 8 parts.

[0032] The filler is ultrafine talcum powder (less than 50nm, treated with coupling agent), polyethylene resin is pretreated and dried to a moisture content of less than 500ppm, and then mixed with 2,5-dimethyl-2,5 bis(tert-butyl peroxy ) hexane, distearyl thiodipropionate, and talcum powder are fully mixed, and then enter the extruder to extrude and granulate at 140°C. After granulation, the finished product is dried until the moisture content is less than 200ppm, and stored in a purified packaging bag Inside.

[0033] serial number

[0034] The above data meet the requirements of GB / T11017 2002 for insulating materials.

Embodiment 3

[0036] Polyethylene 100 parts;

[0037] 1.2 parts of 2,5-dimethyl-2,5 bis(tert-butylperoxy)hexane;

[0038] 2 parts of distearyl thiodipropionate;

[0039] The filler is ultrafine talcum powder (less than 50nm, treated with coupling agent), polyethylene resin is pretreated and dried to a moisture content of less than 500ppm, and then mixed with 2,5-dimethyl-2,5 bis(tert-butyl peroxy ) hexane, distearyl thiodipropionate, and talcum powder are fully mixed, and then enter the extruder to extrude and granulate at 140°C. After granulation, the finished product is dried until the moisture content is less than 200ppm, and stored in a purified packaging bag Inside.

[0040] serial number

[0041] The above data meet the requirements of GB / T11017 2002 for insulating materials.

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
elongation at breakaaaaaaaaaa
Login to View More

Abstract

The present invention relates to a crosslinking polyethylene insulating plastics for power cable. Its raw material composition includes (by weight portion) 100 portions of polyethylene, 0.01-10 portions of cross-linking agent, 0.01-5 portions of antioxidant and 0-20 portions of filling agent. The density of the described polyethylene is 0.910-0.928 g / cu.cm, and its melt index is 0.10-10 / 10 min (2160kg). Said invention also provides its preparation process and its concrete steps.

Description

technical field [0001] The invention relates to a polyethylene insulating plastic, in particular to a cross-linked polyethylene insulating plastic for power cables. Background technique [0002] Cross-linked polyethylene plastic has the advantages of good heat resistance, strong load capacity, non-melting, corrosion resistance, high mechanical properties, excellent electrical properties, and no carcinogenic lead stabilizers. It is used to replace traditional PVC plastic in more and more wires and cables. The application of polyethylene cross-linking technology has greatly improved the maximum service temperature and mechanical properties of wires and cables. However, considering the high crystallinity of high-density polyethylene, such polyethylene can be used for 110KV high voltage after cross-linking. Electric trees are easy to occur in occasions, and low-density polyethylene does not have suitable processing fluidity. How to choose appropriate raw materials and proportio...

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): C08L23/06C08K5/14H01B3/44C08K3/00
Inventor 穆肖斌肖明宇诸仲良龚华沈彬华
Owner 上海新上化高分子材料有限公司