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Delayed cross-linked type silicane cross-linked polyethylene plastic

A polyethylene plastic and silane cross-linking technology, which is applied in plastic/resin/wax insulators, organic insulators, rigid pipes, etc., can solve the problems of limited storage period, inability to strictly control moisture content, and affecting the appearance of extruded pipes, etc. , to achieve the effect of improving product quality, prolonging the shelf life, and reducing the occurrence of phenomena

Active Publication Date: 2011-07-20
上海高分子功能材料研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ordinary silane cross-linked polyethylene plastics cannot strictly control the moisture content in the production process, and often produce pre-crosslinking, which not only requires frequent shutdowns for cleaning, but also affects the appearance and performance of subsequent extruded pipes.
At the same time, due to the influence of moisture in the environment, its storage period is also greatly limited.

Method used

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  • Delayed cross-linked type silicane cross-linked polyethylene plastic
  • Delayed cross-linked type silicane cross-linked polyethylene plastic

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0038] Example 1 is used for occasions that need to achieve a high degree of crosslinking in a short period of time, such as wires and cables.

example 2

[0039] Example 2, used in occasions that have high requirements on the long-term appearance of products, such as wires and cables, pipes.

example 3

[0040] Example 3, it is used in the occasions where the internal structure is complex and it is not easy to clean the extrusion equipment frequently, such as wires and cables, corrugated pipes, and pipes.

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PUM

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Abstract

The invention provides a delayed cross-linked type silicane cross-linked polyethylene plastic. The plastic is characterized in that a specific modification auxiliary agent is used for improving the influence extent of the plastic composition by the water-contained environment, improving the storage stability of the plastic and slowing down the pre-cross-link. The use of the modifying agent aims at generating a layer of hydrophobic groups on the material surface so as to delay the contact of polymers and water molecules and delay the cross-link.

Description

technical field [0001] The invention relates to an insulating layer material for electric wires and cables, and a low-medium-high-density polyethylene pipe material. Specifically, it relates to a silane cross-linked polyethylene plastic which can improve pre-crosslinking and has delayed crosslinking. Background technique [0002] Polyethylene is a high-quality chemical raw material. Through the cross-linking reaction, the polyethylene molecule changes from a two-dimensional structure to a three-dimensional network structure. The chemical and physical properties of the material are correspondingly enhanced, and the temperature and pressure resistance performance is improved. Because 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 in more and more wires and cables, It is used to rep...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L23/08C08L29/04C08K5/00C08K5/42C08J3/24B29C47/92H01B3/44F16L9/12B29C48/92
CPCB29C48/92B29C2948/92704B29C2948/92895
Inventor 陈肖勤
Owner 上海高分子功能材料研究所