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Silicane crosslinked low-retraction polyethylene plastic and its preparation method and use

A polyethylene plastic and silane cross-linking technology, which is applied in the field of silane cross-linked low-shrinkage polyethylene plastic and its preparation and application, can solve the problems of limiting the development of silane cross-linking polyethylene insulating plastics, limiting production efficiency, and cables must be replaced. , to achieve the effect of improving the performance of insulation shrinkage test, improving production efficiency and saving energy consumption

Inactive Publication Date: 2005-11-23
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

In order to make the insulation shrinkage test index of the silane cross-linked polyethylene insulated cable produced by the extrusion die qualified, it is often necessary to strictly control the stretch ratio, adopt low production speed, adopt high cooling water temperature and other measures, which seriously limit High production efficiency and high scrap rate
If the cable insulation shrinkage test index is unqualified, the cable insulation layer will shrink after running for a period of time, the conductors at both ends of the cable will no longer be protected by the insulation layer, and the cable must be replaced, which limits the use of silane XLPE insulating plastics. develop

Method used

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  • Silicane crosslinked low-retraction polyethylene plastic and its preparation method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～7

[0040] The formula is shown in Table 1 and Table 2.

[0041] Table 1

[0042]

[0043] Composition performance

Example 1

Example 2

Example 3

Example 4

Example 5

Example 6

Example 7

Linear Low Density Polyethylene

Resin melt index g /

10min

0.1

10

0.5

1

2

5

8

[0044] Linear Low Density Polyethylene

Resin density g / cm 3

0.910

0.940

0.930

0.920

0.910

0.910

0.940

LDPE resin

Melt index g / 10min

10

-

5

5

10

5

0.1

LDPE resin

Density g / cm 3

0.920

-

0.925

0.924

0.917

0.923

0.922

HDPE resin

Melt index g / 10min

-

9

...

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Abstract

The invention discloses a silicane crosslinked low-retraction polyethylene plastic and its preparation method and use, wherein the constituents include linear low density polyethylene, low density polyethylene, high-density polyethylene, ethylene copolymerized resin, silicane cross linking agent, hydroperoxides cross linking agent, processing auxiliary agent, anti-oxidant, metal deactivator and catalyst.

Description

technical field [0001] The invention relates to a silane-crosslinked polyethylene plastic and its preparation method and application. Background technique [0002] Polyethylene crosslinking usually has three crosslinking methods: peroxide crosslinking, radiation crosslinking and silane crosslinking. [0003] Compared with ordinary polyethylene, cross-linked polyethylene has greatly improved heat resistance, load capacity, non-melting, heat aging resistance, and mechanical properties. At the same time, compared with polyvinyl chloride, cross-linked polyethylene has excellent electrical properties, Combustion does not produce toxic gas, smoke, and does not contain carcinogenic lead stabilizers. Therefore, more and more cross-linked polyethylene insulating plastics are used to replace traditional PVC insulating plastics and polyethylene insulating plastics in the manufacture of wires and cables. The application of cross-linking technology has greatly improved the maximum servi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06
Inventor 肖明宇诸仲良
Owner 上海新上化高分子材料有限公司
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