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Insulation rubber for preparing cable joint and preparation method thereof

A technology for insulating rubber and cable joints, which is applied in the composition and mixing process of insulating rubber materials. It can solve the problems of accelerated rubber aging, water resistance, low high-temperature and high-pressure resistance strength, and low bonding strength, and achieve excellent fluidity. And mold filling, good water resistance, good insulation effect

Active Publication Date: 2012-10-10
北京BKE电气限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] This production method has the following defects: (1) The rubber undergoes 3 repeated high-temperature and high-pressure vulcanization processes, which accelerates the aging of the rubber; (2) Due to the complex shape of the product, the pressure transmission of various parts during the vulcanization molding process is uneven, resulting in insulation layer Bubbles are easily generated inside and between the semiconductive layer, and the bonding strength between layers is low; (3) The composite vulcanization molding process is complex, the operation requirements are harsh, and the product qualification rate is low. Its water resistance, high temperature and high pressure strength (4) the above-mentioned production method produces one in a mold, and the production efficiency is low

Method used

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  • Insulation rubber for preparing cable joint and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1, be used for preparing the insulating rubber of cable joint and preparation thereof

[0039] 1. Ingredients process:

[0040] 1) Cut the EPDM rubber into small rubber pieces with a rubber cutting machine, and weigh 10 kilograms according to the formula for use;

[0041] 2) Weigh 500 grams of zinc oxide and 150 grams of TAC according to the formula and put them into a container for later use;

[0042] 3) Weigh 150 grams of black masterbatch, 150 grams of stearic acid, and 300 grams of dispersant WB212 with a balance according to the formula and put them into a container for use;

[0043] 4) Weigh 400 grams of vulcanizing agent DCP according to the formula and put it into a container for use;

[0044] 5) Weigh 100 grams of anti-aging agent MB and 80 grams of anti-aging agent DNP according to the formula and put them into a container for later use;

[0045] 6) Weigh 1000 grams of hydrophobic white carbon black and 5000 grams of surface-treated calcined kaol...

Embodiment 2

[0054] Embodiment 2, insulating rubber for preparing cable joints and preparation thereof

[0055] 1. Ingredients process:

[0056] 1) Cut the EPDM rubber into small rubber pieces with a rubber cutting machine, and weigh 10 kilograms according to the formula for use;

[0057] 2) Weigh 600 grams of zinc oxide and 100 grams of TAC according to the formula and put them into a container for later use;

[0058] 3) Take 150 grams of black masterbatch with a balance according to the formula, 100 grams of stearic acid, and 200 grams of dispersant WB212 and put it into a container for use;

[0059] 4) Weigh 350 grams of vulcanizing agent DCP according to the formula and put it into a container for use;

[0060] 5) Weigh 100 grams of anti-aging agent MB and 80 grams of anti-aging agent DNP according to the formula and put them into a container for later use;

[0061] 6) Weigh 700 grams of hydrophobic white carbon black and 4000 grams of surface-treated calcined kaolin according to th...

Embodiment 3

[0070] Embodiment 3, the insulating rubber used to prepare the cable joint and its preparation

[0071] 1. Ingredients process:

[0072] 1) Cut the EPDM rubber into small rubber pieces with a rubber cutting machine, and weigh 10 kilograms according to the formula for use;

[0073] 2) Weigh 800 grams of zinc oxide and 250 grams of TAC according to the formula and put them into a container for later use;

[0074] 3) Weigh 150 grams of black masterbatch, 200 grams of stearic acid, and 400 grams of dispersant WB212 with a balance according to the formula and put them into a container for use;

[0075] 4) Weigh 550 grams of vulcanizing agent DCP according to the formula and put it into a container for use;

[0076] 5) Weigh 150 grams of anti-aging agent MB and 100 grams of anti-aging agent DNP according to the formula and put them into containers for later use;

[0077] 6) Weigh 1500 grams of hydrophobic white carbon black and 4500 grams of surface-treated calcined kaolin accord...

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Abstract

The invention discloses insulation rubber for preparing a cable joint. The insulation rubber is prepared from the raw materials of ethylene-propylene-diene monomer rubber, zinc oxide, stearic acid, a vulcanizing agent, a co-vulcanizing agent triallyl cyanurate (TAC), hydrophobic white carbon black, surface treatment calcined kaolin, an anti-aging agent, paraffin oil, a dispersing agent and black masterbatch by the steps of preparing according to a certain proportion, adding the raw materials into a rubber mixing mill and carrying out return mixing by a mixing method. The insulation rubber prepared according to a formula and a preparation method has high insulativity, tensile strength, ageing resistance, water resistance, liquidity and die filling performance.

Description

technical field [0001] The invention relates to a composition and a mixing process method of an insulating rubber material, in particular to an insulating rubber used for preparing cable joints and a preparation method thereof. Background technique [0002] The rubber cable joints currently on the market are all vulcanized by three layers of inner semiconductive layer, outer semiconductive layer and intermediate insulating layer. The existing production method is: first put the mixed rubber back into the mold, push the mold into the rubber flat vulcanizing machine, and vulcanize it under a certain temperature, time, and pressure to obtain the inner semi-conductive layer; The vulcanized inner semiconductive layer and the insulating rubber are vulcanized at a certain temperature, time and pressure to obtain the intermediate insulating layer; finally, the outer surface of the compound vulcanized intermediate insulating layer is wrapped with semiconductive rubber and heated at a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/16C08K13/06
Inventor 王建兴谢广英何燕生齐丽娟
Owner 北京BKE电气限公司