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One-step method silane crosslinking polyethylene insulating material and pressure retaining impregnation preparation method thereof

A polyethylene insulating material and silane cross-linking technology, applied in the direction of insulators, organic insulators, plastic/resin/wax insulators, etc., to achieve excellent performance, improved heat shrinkage performance, and bright surface

Inactive Publication Date: 2016-07-20
SHANDONG TAIKAI HIGH MOLECULAR MATERIAL CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems existing in the existing silane crosslinked cable materials, one of the purposes of the present invention is to provide a one-step silane crosslinked polyethylene insulating material and a one-step silane crosslinked polyethylene impregnation preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] This embodiment provides a one-step silane crosslinked polyethylene insulating material, which is made of the following raw materials:

[0035] 80 parts of linear low density polyethylene, 20 parts of low density polyethylene, 0.05 parts of dicumyl peroxide, 1 part of thio hindered phenolic antioxidant, 1 part of phosphite antioxidant, vinyl trimethoxy 12.5 parts of silane A-17, 0.5 parts of polyethylene wax, 0.5 parts of zinc stearate, 2 parts of caprolactam, 0.1 part of dibutyltin dilaurate.

[0036] The above-mentioned thio hindered phenol antioxidant is 300#, and the phosphite antioxidant is one or more of 168, antioxidant 618, and 890.

[0037] The preparation method of the one-step method silane crosslinked polyethylene insulating material of this embodiment is carried out as follows:

[0038] 1. Weigh the above materials according to the proportion and set aside.

[0039] 2. Vacuum feed linear low-density polyethylene and low-density polyethylene resin into a r...

Embodiment 2

[0043] 75 parts of linear low density polyethylene, 15 parts of low density polyethylene, 10 parts of ethylene vinyl acetate copolymer, 0.05 parts of dicumyl peroxide, 0.1 part of benzoyl peroxide, 1.5 parts of hindered phenolic antioxidant, 0.5 part of thioester antioxidant, 1.0 part of vinyltriethoxysilane (A151), 0.5 part of octyltriethoxysilane, 0.3 part of fluorine-containing processing aid, 0.5 part of styrene, acrylonitrile modified 0.15 parts of acrylate, 0.05 parts of dibutyltin dilaurate, and 0.03 parts of dibutyltin diacetate.

[0044] The aforementioned hindered phenolic antioxidant is one or a combination of antioxidant 1010 and antioxidant 1076, and the aforementioned thioester antioxidant is one or a combination of DLTP and DSTP.

[0045] The above-mentioned fluorine-containing processing aid is PPA.

[0046] The preparation method of the one-step method silane crosslinked polyethylene insulating material of this embodiment is carried out as follows:

[0047] ...

Embodiment 3

[0052] 85 parts of linear low density polyethylene, 5 parts of ethylene propylene ethyl ester copolymer, 10 parts of ethylene octene block copolymer, 0.15 part of di-tert-butyl peroxide, 0.05 part of dicumyl oxide, thio hindered phenols 1.0 part of antioxidant, 0.5 part of thioester antioxidant, 0.5 part of vinyltrimethoxysilane (A171), 1.0 part of vinyltris(β-methoxyethoxy)silane, liquid siloxane polymerization 0.5 parts, 0.35 parts of acrylonitrile modified acrylate, 0.05 parts of dibutyltin dilaurate, 0.05 parts of dibutyltin dodecylsulfide.

[0053] The aforementioned thio-hindered phenolic antioxidant is 300#, and the thioester-based antioxidant is DLTP, DSTP or a mixture of the two.

[0054] The preparation method of the one-step method silane crosslinked polyethylene insulating material of this embodiment is carried out as follows:

[0055] 1. Weigh the above materials according to the proportion and set aside.

[0056] 2. Linear low-density polyethylene and ethylene ...

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PUM

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Abstract

The invention discloses a one-step method silane crosslinking polyethylene insulating material, which is prepared from polyolefin, an initiating agent, a silane coupling agent, a catalyst, a lubricating agent, an antioxidant and an anti-pre-crosslinking agent. Various kinds of resin are used in a formula system for compounding; the anti-pre-crosslinking agent is added; when the material melt grafting temperature is reduced; the pre-crosslinking cannot be easily generated; the heat shrinkage performance of a finished product is also improved; at the same time, a nitrogen gas pressure retaining fast absorption infiltration method is adopted for preparation. Compared with a traditional preparation process and a formula, the preparation method has the advantages that materials can fast be dispersed and uniformly wrap particle surfaces, and are fast infiltrated inside particles; the process step is simplified (the labor hour is short); the energy consumption is reduced; the labor force is reduced; the flowability is good; the extruded surface is bright; the performance is excellent; the product is stable. The method is used for producing the silane crosslinking polyethylene insulating material.

Description

technical field [0001] The invention relates to the technical field of cable material production, in particular to a one-step silane crosslinked polyethylene insulating material and a preparation method thereof for pressure-maintaining nitrogen impregnation. Background technique [0002] Cross-linked polyethylene (XLPE) insulated power cables have many advantages such as convenient laying, unlimited drop, simple maintenance, and high working temperature, so they are playing an increasingly important role in my country's power transmission network. One-step silane cross-linked polyethylene cable compound is more and more widely used in the field of wire and cable because of its simple process control, high production efficiency, and low cost. [0003] The traditional one-step silane crosslinking material is to directly extrude the base material, silane coupling agent, catalyst masterbatch and other additives through a high-speed mixer, but the catalyst masterbatch may be unev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F255/02C08F291/00C08F291/06C08F230/08H01B3/44
CPCC08F255/02C08F255/026C08F287/00H01B3/441C08F230/08
Inventor 张健姚静涛鲍文波陈娟陈南阳杨军
Owner SHANDONG TAIKAI HIGH MOLECULAR MATERIAL CO LTD