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Preparation method of environment-friendly one-step process organosilane crosslinked polyethylene cable material

A cross-linked polyethylene and French silane technology, applied in the production of bulk chemicals, etc., can solve the problems of slow cross-linking speed, time-consuming, high labor cost, and long production cycle, so as to improve the uniformity of cross-linking and process The effect of not harsh conditions and fast natural crosslinking speed

Active Publication Date: 2013-05-15
CHANGSHU ZHONGLIAN PHOTOELECTRICITY NEW STUFF +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The silane warm water cross-linked polyethylene cable material widely used in the prior art has the following technical problems: first, the cross-linking speed is slow, and it needs to be boiled in a steam room for a long time, and the copper conductor is oxidized and blackened due to heat and moisture, and the insulation Second, the production efficiency is low. After the cross-linking material is cabled, the cross-linking must be completed before entering the next process, and the production cycle is long; the third is high energy consumption, time consumption and labor costs, because The cross-linked cable not only consumes a lot of water and electricity during the cooking process, but also needs to arrange relevant personnel to complete these processes
As the industry knows, in recent years, the non-toxic and environmental protection requirements for polyethylene cable materials have become increasingly stringent. Manufacturers of polyethylene cable materials have raised challenges, so if they cannot make a breakthrough, it will inevitably restrict my country's wire and cable to the international market.

Method used

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  • Preparation method of environment-friendly one-step process organosilane crosslinked polyethylene cable material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A) To prepare polyethylene composite resin, weigh 30 parts of low-density polyethylene (LDPE), 50 parts of linear low-density polyethylene (LLDPE) and 20 parts of medium-density polyethylene (MDPE) in parts by weight to obtain polyethylene composite resin. resin;

[0023] B) To prepare a silane compounding agent, 2.5 parts of unsaturated silane coupling agent, namely vinyltrimethoxysilane, 0.2 part of dicumyl peroxide as initiator, and β (3 , 5-di-tert-butyl-4-hydroxyphenyl) propionate pentaerythritol ester and β (3,5-di-tert-butyl-4-hydroxyphenyl) propionate octadecyl alcohol ester by weight ratio of 2: 0.2 parts of the mixed mixture of 1 phase, 0.5 parts of tris (2-hydroxyethyl) isocyanurate as a cross-linking accelerator, 1.5 parts of bis(acetylacetonate) diisopropyl titanate as a catalyst for titanate derivatives 1.2 parts of pre-crosslinking inhibitor 3-butyl-2-(1-ethylpentyl) oxazolidine and anti-copper agent N, N-bis[β(3,5-di-tert-butyl- Put 0.5 parts of 4-hydr...

Embodiment 2

[0026] A) preparing polyethylene composite resin, weighing 10 parts of LDPE, 80 parts of LLDPE and 10 parts of MDPE according to parts by weight to obtain polyethylene composite resin;

[0027]B) To prepare a silane compounding agent, 1 part of unsaturated silane coupling agent, ie, vinyltrimethoxysilane, 0.015 part of initiator, 0.015 part of dibenzoyl tert-butyl peroxide and di-tert-butyl 0.015 parts of dicumyl peroxide, 0.025 parts of tris(2,4-di-tert-butylphenol) phosphite and 0.025 parts of 4,4′thiobis(yl-3-cresol) as antioxidants, The co-accelerator is 0.5 part of N,N-bis(β-hydroxyethyl)-5,5-dimethylhydantoin and 0.5 part of N,N-bis(β-hydroxyethyl)-benzimidazolone, Titanate derivatives are 1 part of isopropyl octyl triacyloxy titanate and 1 part of isopropyl titanate tristearate, and the pre-crosslinking inhibitor is 3-butyl-2-(1-ethyl Pentyl) oxazolidine 0.5 part and anti-copper agent namely N, N-bis[β(3,5-di-tert-butyl-4-hydroxyphenyl) propionyl]hydrazine 0.7 part are...

Embodiment 3

[0030] A) preparing polyethylene composite resin, weighing 55 parts of LDPE, 30 parts of LLDPE and 15 parts of MDPE in parts by weight to obtain polyethylene composite resin;

[0031] B) To prepare a silane compounding agent, 2 parts of vinyltrimethoxysilane, 0.8 parts of vinyltrimethoxysilane oligomer, vinyl-tris(2- 2 parts of methoxyethoxy) silane, 0.5 part of tert-butyl dibenzoyl peroxide as initiator, 0.5 part of lauryl 3,3-thiopropionate as antioxidant, and 0.5 part of lauryl thiopropionate as initiator, and N , 1.5 parts of N-bis(β-hydroxyethyl)-benzimidazolone, 0.5 parts of titanate derivative, i.e. isopropyl titanate tristearate, pre-crosslinking inhibitor, i.e. 3-butyl-2- 2 parts of (1-ethylpentyl) oxazolidine and 0.3 parts of N, N-bis[β(3,5-di-tert-butyl-4-hydroxyphenyl) propionyl]hydrazine were put into the In the stainless steel mixing vessel of the agitator, pre-mix for 8 minutes at a speed of 280 r / min to obtain a silane compound;

[0032] C) Finished product p...

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Abstract

The invention discloses a preparation method of an environment-friendly one-step process organosilane crosslinked polyethylene cable material, and belongs to the technical field of preparation of wire cable materials. The method comprises the steps of: weighing less than 60 parts of low-density polyethylene, 30-80 parts of linear low-density polyethylene and 10-20 parts of medium-density polyethylene in parts by weight to obtain polyethylene composite resin; inputting 1-5 parts of unsaturated silane coupling agent, 0.03-0.5 part of initiating agent, 0.05-0.5 part of antioxidant, 0.5-1.5 parts of crosslinking accelerants, 0.5-2 parts of catalysts, 0.5-2 parts of pre-crosslinked inhibitor and 0.3-0.7 part of copper resisting agent into a stirring container to pre-blend to obtain the silane compounds; inputting the obtained polyethylene composite resin and the silane compounds into an airtight high-speed blending machine to blend; controlling rotation speed and blending time of the high-speed blending machine; discharging; and packaging to obtain a finished product. The preparation method has the advantages of good environment protection effect, high natural crosslinking speed, non-rigorous and concise process conditions, and the production efficiency and the crosslinking uniformity are improved, and the stability of the processing procedure is ensured.

Description

technical field [0001] The invention belongs to the technical field of wire and cable material preparation, and in particular relates to an environment-friendly one-step preparation method of silane crosslinked polyethylene cable material. Background technique [0002] Due to the advantages of good heat resistance, excellent insulation performance and easy laying after making cables, cross-linked polyethylene materials are widely used in power cables, overhead cables and various control cables, etc., and become the preferred choice in the field of medium and low voltage cables. dominant material. Compared with peroxide cross-linked cable materials (such as Chinese patents CN1325540C and CN102093580C, etc.) The extrusion process is simple, the equipment cost is low, and the strength and heat resistance of polyethylene can be improved (the service temperature can be increased to about 90 ° C), etc., so the share in the field of low-voltage cables is unmatched by other cable m...

Claims

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Application Information

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IPC IPC(8): C08J3/24C08L23/06C08L23/08C08K5/00C08K5/5425C08K5/134
CPCY02P20/52
Inventor 苏桂明张尔梅朱俊
Owner CHANGSHU ZHONGLIAN PHOTOELECTRICITY NEW STUFF