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Silane cross-linking polyethylene insulation material capable of bearing temperature of 125 DEG C and preparation method thereof

A polyethylene insulating material and silane cross-linking technology, applied in organic insulators, plastic/resin/wax insulators, etc., can solve problems such as application limitations, improve heat resistance, maintain electrical and mechanical properties, and economic applicability strong effect

Active Publication Date: 2013-04-10
上海新上化高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the long-term use temperature of silane XLPE cable materials on the market is only 90°C. For cables with high temperature resistance requirements, such as wind energy cables, photovoltaic cables, equipment cables, etc., the application of ordinary silane XLPE cable materials is restricted

Method used

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  • Silane cross-linking polyethylene insulation material capable of bearing temperature of 125 DEG C and preparation method thereof
  • Silane cross-linking polyethylene insulation material capable of bearing temperature of 125 DEG C and preparation method thereof
  • Silane cross-linking polyethylene insulation material capable of bearing temperature of 125 DEG C and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Material A:

[0038]

[0039] Reactive extrusion granulation by twin-screw extruder, drying after cooling to obtain material A;

[0040] Material B:

[0041]

[0042] Blending and granulation by a twin-screw extruder, air cooling, and drying to obtain material B.

[0043] Mix according to the ratio of material A: material B = 90:10 to obtain a silane cross-linked polyethylene insulating material with a temperature resistance of 125°C. The JB / T10437-2004 standard was used for testing, and the results are shown in Table 1.

Embodiment 2

[0045] Material A:

[0046]

[0047] Reactive extrusion granulation by twin-screw extruder, drying after cooling to obtain material A;

[0048] Material B:

[0049]

[0050] Antioxidant 300 1 part, Antioxidant 1076 1 part

[0051] 2 parts of copper inhibitor bis(3,5-di-tert-butyl-4-hydroxyphenylpropionoyl)hydrazine.

[0052] Blending and granulation by a twin-screw extruder, air cooling, and drying to obtain material B.

[0053] Mix according to the ratio of material A: material B = 95:10 to obtain a temperature-resistant 125°C silane cross-linked polyethylene cable material. The JB / T10437-2004 standard was used for testing, and the results are shown in Table 1.

Embodiment 3

[0055] Material A:

[0056]

[0057] Reactive extrusion granulation by twin-screw extruder, drying after cooling to obtain material A;

[0058] Material B:

[0059]

[0060]

[0061] 2 parts of copper inhibitor bis(3,5-di-tert-butyl-4-hydroxyphenylpropionoyl)hydrazine.

[0062] Blending and granulation by a twin-screw extruder, air cooling, and drying to obtain material B.

[0063] Mix according to the ratio of material A: material B = 90:10 to obtain a silane cross-linked polyethylene insulating material with a temperature resistance of 125°C. The JB / T10437-2004 standard was used for testing, and the results are shown in Table 1.

[0064] The temperature-resistant 125°C silane cross-linked polyethylene insulating material prepared in the above three examples has excellent mechanical and electrical properties, good heat resistance and reliable performance.

[0065]Table 1 Example performance test results

[0066]

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Abstract

The invention provides a silane cross-linking polyethylene insulation material capable of bearing a temperature of 125 DEG C and a preparation method thereof. The silane cross-linking polyethylene insulation material capable of bearing the temperature of 125 DEG C comprises A material and B material, and the weight ratio of the A material and the B material is equal to (85 to 95) to 10, wherein the A material comprises the following components in part by weight: 100 parts of linear polyethylene, 2 to 5 parts of silane cross-linking agent, 0.1 to 0.5 part of cross-linking auxiliary and 0.1 to 0.2 part of initiating agent; and the B material comprises the following components in part by weight: 100 parts of linear polyethylene, 10 to 100 parts of functional packing, 2 to 5 parts of organic tin, 2 to 5 parts of flowing deformation auxiliary, 2 to 5 parts of antioxygen and 2 to 5 parts of copper inhibitor. Compared with silane cross-linking polyethylene cable material of the prior art, the silane cross-linking polyethylene insulation material capable of bearing a temperature of 125 DEG C provided by the invention has greatly improved thermal aging resistance, can be used under the temperature of 125 DEG C for a long time, and the electrical property and the mechanical property are excellent, so that the application scope of the silane cross-linking polyethylene insulation material is greatly expanded.

Description

technical field [0001] The invention relates to a production technology of a silane cross-linked polyethylene insulating material which can be applied to the insulating layer of low-voltage cables. Background technique [0002] Cross-linked polyethylene has the characteristics of high volume resistivity, low dielectric loss, good heat aging resistance, good stress crack resistance, easy processing, and low price. It is an excellent insulating material. At present, cross-linked polyethylene mainly has three methods: peroxide cross-linking, radiation cross-linking and silane cross-linking. [0003] Peroxide cross-linked polyethylene requires expensive extrusion equipment and vulcanization devices when it is cabled, and has high process requirements. It is most suitable for the production of medium and high voltage power cables with extremely high electrical performance requirements. The cross-linked polyethylene produced by radiation cross-linking has the characteristics of h...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L83/04C08L101/04C08K13/06C08K9/06C08K9/04C08K3/34C08K5/5425C08K5/3492C08K5/103C08J3/24H01B3/44
Inventor 徐晓辉嵇建忠钟伟勤徐永卫
Owner 上海新上化高分子材料有限公司
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