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Ethyl-propylene insulating material for cable resisting temperature of 140 DEG C

A technology for ethylene-propylene insulation and cables, which is applied to rubber insulators, organic insulators, etc., can solve the problems of unsatisfactory high temperature aging resistance, and achieve high physical and mechanical properties, long service life, and excellent high temperature resistance.

Inactive Publication Date: 2009-09-23
ANHUI ZONGHENG HI TECH CABLE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ethylene-propylene insulating material for cables resistant to 140°C. The existing technology of cable insulating materials uses rubber non-polar materials such as natural butadiene styrene or EPDM as the basic material, because the material is an unsaturated or incompletely saturated organic high Molecular materials, so the high temperature aging resistance of the material is not ideal at high temperature
Therefore, the current technology still needs to be improved

Method used

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  • Ethyl-propylene insulating material for cable resisting temperature of 140 DEG C
  • Ethyl-propylene insulating material for cable resisting temperature of 140 DEG C
  • Ethyl-propylene insulating material for cable resisting temperature of 140 DEG C

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] First take 400 grams of basic rubber, knead it on a small open mill, add fine materials, anti-aging agents, some fillers and plasticizers after fully covering the rolls, add the remaining coarse fillers and plasticizers after basic molding, and then After adding vulcanizing agent and vulcanizing aids for molding, the distance between the small start-up rollers is reduced, the rubber is punched into thin sheets, and the rubber is punched in triangles for at least 5 times, and then the sheets are cooled for later use.

Embodiment 2

[0074] Put 30 kg of basic rubber into the internal mixer for 50 seconds to 1.3 minutes, then add 42.50 kg of compounding ingredients such as anti-aging agent, plasticizer, filler, etc. except for vulcanizing agent, and mix for about 5 minutes, then discharge and press the tablet After stripping and filtering the rubber, cool down and release the piece for later use. The thickness of the piece is about 2mm. After parking for at least 8 hours, weigh 72.50 kg of unsulfurized rubber and put it into the internal mixer for about 3 minutes, then add 2.5 kg of vulcanizing agent and vulcanization. Auxiliary 30 seconds to 1 minute. Afterwards, the strips are turned and cooled, and the thickness of the strips is 1.00mm, and the width is 180-250mm.

[0075] Embodiment formula table 2

[0076]

[0077] Remove a certain amount of rubber material, vulcanize on a flat vulcanizing machine for 160×40 minutes at a pressure of 25MPa, and make a 1-2mm test piece for physical and chemical perfo...

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PUM

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Abstract

The invention discloses an ethyl-propylene insulating material for cable resisting temperature of 140 DEG C, comprising the following components by weigh parts: 100.00 parts of ethylene propylene rubber, 50.00 parts of filling agent light calcium carbonate, 50.00 parts of filling agent superfine talcum powder, 30.00 parts of reinforcing agent calcined clay powders, 5.00-10.00 parts of plasticizer paraffine, 0.50-1.00 parts of activator stearic acid, 5.00-10.00 parts of activator zinc oxide, 0.50-2.00 parts of coloring agent, 2.50-3.00 parts of 2,2,4-trimethyl-1,2-dihydroquinone and 2-mercaptobenzimidazole with the proportion of anti-ageing agent of 1:1, 1.00-1.50 parts of coupling agent Vinyl tris-beta-methoxy ethoxy silane, 1.50-2.00 parts of vulcanizing agent peroxide perkadox, and 2.00-3.00 parts of vulcanization aid cyanuric acid triallyl ester. The ethyl-propylene insulating material for the cable resisting the temperature of 140 DEG C has the advantages of excellent high-temperature resistance, high-insulation resistance, high mechanical performance, long service life, and the like.

Description

technical field [0001] The invention relates to an insulating cable material for special cables, in particular to an ethylene-propylene rubber-based cable material with high temperature resistance, high insulation resistance and high mechanical performance. Background technique [0002] At present, the general temperature resistance grades of ethylene-propylene rubber or natural styrene-butadiene rubber used as cable insulation materials in the cable industry are only 70°C, 90°C, and 105°C, and the insulation mechanical strength is not ideal, only 5.0MPa, and the elongation rate is 250%. . This has severely restricted the development of my country's cable industry, and cannot meet customers' requirements for energy conservation and economic efficiency improvement. However, the temperature resistance grade of the cable insulating material of the present invention is greatly improved to 140° C., and the physical and mechanical strength is greater than 10.0 MPa, the elongation...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08K13/02C08K3/26C08K5/09C08K3/22C08K3/34H01B3/28
Inventor 朱云春毛建刚汪洁
Owner ANHUI ZONGHENG HI TECH CABLE
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