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One-step silicane cross-linked polyethylene cable material and preparation method thereof

A technology of cross-linked polyethylene and polyethylene, applied in the direction of plastic/resin/wax insulators, organic insulators, etc., can solve the problem of high investment costs, achieve the effect of not harsh process conditions, cost saving, and easy implementation

Inactive Publication Date: 2014-11-05
贵州凯科特材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For cable manufacturers, the investment cost is high

Method used

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  • One-step silicane cross-linked polyethylene cable material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0015] A) Prepare the catalyst master batch, extrude and dry 20 parts of linear low density polyethylene, 80 parts of low density polyethylene, 2 parts of antioxidant, and 1 part of catalyst to obtain the catalyst master batch;

[0016] B) Put 50 parts of linear low-density polyethylene, 50 parts of low-density polyethylene, and 5 parts of catalyst masterbatch together in a closed mixer. , 0.04 parts of DCP initiator, 1 part of stearic acid, 0.2 parts of zeolite powder, etc. were added, and the materials were shaken in a closed mixer at a speed of 200r / min, discharged, and vacuum-packed to obtain one-step silane cross-linked polyethylene cables material.

example 2

[0018] A) preparing catalyst master batch, extruding and drying 50 parts of linear low density polyethylene, 50 parts of low density polyethylene, 2 parts of antioxidant, and 1 part of catalyst to obtain catalyst master batch;

[0019] B) Put 75 parts of linear low-density polyethylene, 20 parts of low-density polyethylene, and 5 parts of catalyst masterbatch in a closed mixer. , 0.02 parts of DCP initiator, 1.5 parts of stearic acid, 1 part of zeolite powder, etc. were added, and the materials were shaken in a closed mixer at a speed of 350r / min, discharged, and vacuum-packed to obtain one-step silane cross-linked polyethylene cables material.

example 3

[0021] A) Prepare the catalyst master batch, extrude and dry 80 parts of linear low density polyethylene, 20 parts of low density polyethylene, 2 parts of antioxidant, and 1 part of catalyst to obtain the catalyst master batch;

[0022] B) Put 80 parts of linear low-density polyethylene, 20 parts of low-density polyethylene, and 5 parts of catalyst masterbatch in a closed mixer. , 0.01 parts of DCP initiator, 2 parts of stearic acid, 2 parts of zeolite powder, etc. were added, and the materials were shaken in a closed mixer at a speed of 500r / min, discharged, and vacuum-packed to obtain one-step silane cross-linked polyethylene cables material.

[0023] Test of properties of silane one-step cross-linked polyethylene cable material: Extrude the silane one-step cross-linked polyethylene material of the above-mentioned examples 1 to 3 of the present invention in a single-screw extruder, set the temperature of each zone to 175°C, and pull The speed is adjusted to 300r / min, and th...

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Abstract

The invention discloses a polyethylene cable material. The polyethylene cable material is characterized by comprising the following components: 20 to 80 parts of linear low-density polyethylene, 20 to 80 parts of low density polyethylene, 1 to 5 parts of a catalyst--a dibutyl tin laurate compound, 1 to 3 parts of an anti-oxidant 300, 0.4 to 2 parts of a silicane cross-linking agent--vinyltrimethoxy silane, 0.01 to 0.04 part of an initiator--dicumyl peroxide and 1 to 4 parts of a water supplying agent. A preparation method for the polyethylene cable material comprises the following steps: preparing a catalyst master batch by extruding linear low density polyethylene, low density polyethylene, the anti-oxidant and the catalyst with a single screw; and putting linear low density polyethylene, low density polyethylene and the catalyst master batch in an enclosed mixer, carrying out vacuum-pumping and drying under a heating condition, then allowing the silicane cross-linking agent and the DCP initiator to penetrate into polyethylene through gasification, controlling the rotating speed and time of the enclosed mixer and carrying out discharging and vacuum packaging so as to obtain the one-step silicane cross-linked polyethylene cable material.

Description

technical field [0001] The invention relates to the field of preparation of silane one-step cross-linked polyethylene cable material and its process method, especially the preparation of silane one-step cross-linked polyethylene of cable material lower than 10kV. Background technique [0002] XLPE material has the advantages of good heat resistance, excellent insulation performance and easy laying after being made into cables, so it is widely used in power cables, overhead cables and various control cables, etc., and has become the leader in the field of medium and low voltage cables Material. Compared with peroxide cross-linked cable materials (such as Chinese patents CN1325540C and CN102093580C, etc.) The process is simple, the cost of equipment is low, and the strength and heat resistance of polyethylene can be improved (the operating temperature can be raised to about 90 ° C), etc., so the share in the field of low-voltage cables is unmatched by other cable materials. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/06C08K13/02C08K5/5425C08K5/09C08K3/34C08J3/24C08J3/22H01B3/44
CPCC08L23/0815C08J3/226C08J2323/06C08J2323/08C08J2423/06C08J2423/08C08L23/06C08L2203/202C08L2205/025C08L2205/035C08L2207/066C08L2312/08H01B3/441C08K13/02C08K5/5425C08K5/09C08K3/34
Inventor 雷振刚刘玉飞罗筑何敏段龙江刘一春于杰蒙继宏杨荣强明星星粟多文高京刘小柱谭兴霞张峰
Owner 贵州凯科特材料有限公司
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