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Medium-voltage ethylene propylene rubber insulating material and preparation method thereof

A technology of ethylene-propylene rubber insulation and EPDM rubber, which is applied to rubber insulators, organic insulators, etc., can solve the problems of high production cost and easy insulation breakdown, and achieve low cost, low price, and simple preparation process Effect

Active Publication Date: 2012-03-21
JIANGSU HENGTONG POWER CABLE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002]Existing medium-voltage ethylene-propylene rubber insulation materials only use EPDM rubber as the base material. The electrical properties of EPDM rubber such as volume resistivity, The breakdown field strength is relatively poor, which leads to the insulation breakdown of the formed wire core under high voltage or short-circuit instantaneous high voltage, and the base material only uses EPDM rubber, resulting in relatively high production costs

Method used

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  • Medium-voltage ethylene propylene rubber insulating material and preparation method thereof
  • Medium-voltage ethylene propylene rubber insulating material and preparation method thereof
  • Medium-voltage ethylene propylene rubber insulating material and preparation method thereof

Examples

Experimental program
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Effect test

specific Embodiment 1

[0029] The formula of each component of the material is: 25 kg of EPDM rubber, 15 kg of binary ethylene propylene rubber, 4 kg of linear low density polyethylene, 3.5 kg of paraffin oil, 4.5 kg of zinc oxide, 2 kg of paraffin, 0.15 stearic acid kg, 27 kg of calcined clay, 15 kg of superfine talcum powder, 0.2 kg of surfactant γ-aminopropyltriethoxysilane, 1.0 kg of antioxidant 4,4′bis(α,αdimethylbenzyl)diphenylamine kg, 1.2 kg of vulcanizing agent dicumyl peroxide, and 1.45 kg of vulcanizing agent triallyl cyanurate.

[0030] Preparation method: first mix the weighed EPDM rubber, binary ethylene propylene rubber and linear low density polyethylene in an internal mixer at 100°C-120°C for 5-6min, so that the three materials are mixed evenly; then Add zinc oxide, stearic acid, superfine talc powder according to the corresponding weight, and knead for 2-3 minutes; then add paraffin oil, paraffin wax, calcined clay, and surfactant γ-aminopropyltriethoxysilane according to the c...

specific Embodiment 2

[0035] The formula of each component of the material is: EPDM rubber 25 kg, EPDM rubber 14.5 kg, linear low density polyethylene 6 kg, paraffin oil 3.5 kg, zinc oxide 4.5 kg, paraffin wax 2 kg, stearic acid 0.15 kg kg, 26 kg of calcined clay, 15 kg of superfine talcum powder, 0.2 kg of surfactant γ-aminopropyltriethoxysilane, 1.0 kg of anti-aging agent 4,4′bis(α,αdimethylbenzyl)diphenylamine 1 kilogram, 1.2 kilograms of vulcanizing agent dicumyl peroxide, 0.95 kilograms of co-curing agent triallyl cyanurate, and the preparation method is the same as in specific example 1.

[0036] The performance test data of the medium-voltage ethylene-propylene rubber insulating material prepared in this example are as follows:

[0037]

[0038] Aging condition: 135±2℃×168 hours

specific Embodiment 3

[0040] The formula of each component of the material is: 25 kg of EPDM rubber, 15 kg of binary ethylene propylene rubber, 6 kg of linear low density polyethylene, 3.5 kg of paraffin oil, 4.5 kg of zinc oxide, 2 kg of paraffin, 0.15 stearic acid kg, 14.5 kg of calcined clay, 26 kg of superfine talc powder, 0.2 kg of surfactant γ-aminopropyltriethoxysilane, 1.0 kg of anti-aging agent 4,4'bis(α,αdimethylbenzyl)diphenylamine 1 kilogram, 1.2 kilograms of vulcanizing agent dicumyl peroxide, 0.95 kilograms of co-curing agent triallyl cyanurate, and the preparation method is also the same as in specific example 1.

[0041] The performance test data of the medium-voltage ethylene-propylene rubber insulating material prepared in this example are as follows:

[0042]

[0043] Aging condition: 135±2℃×168 hours

[0044] In summary, the volume resistivity of the medium-voltage ethylene-propylene rubber insulating material of the present invention reaches 10 14 Ω.m, the brea...

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Abstract

The invention discloses a medium-voltage ethylene propylene rubber insulating material and a preparation method thereof. The medium-voltage ethylene propylene rubber insulating material comprises the following components in percentage by weight: 15-30 percent of ethylene-propylene-diene rubber, 9-20 percent of ethylene-propylene rubber, 4-10 percent of linear low-density polyethylene, 4-7 percentof zinc oxide, 0.1-0.4 percent of stearic acid, 5-35 percent of superfine talc powder, 4-7 percent of paraffin hydrocarbon oil, 0.5-3 percent of paraffin, 10-30 percent of calcining clay, 0.1-0.9 percent of surface active agent gamma-aminopropyltriethoxysilane, 0.4-1.8 percent of antiager 4,4'di(alpha,alpha dimethylbenzyl)diphenylamine, 0.5-1.5 percent of vulcanizer dicumyl peroxide and 0.3-1.4 percent of vulcanizing agent triallyl cyanurate. By synthesizing the performance of various materials and learning from strengths to offset their weaknesses, the aims of reducing the cost and improvingthe electric performance are achieved. Tests prove that the medium-voltage ethylene propylene rubber insulating material disclosed by the invention has the volume resistivity of 1014 ohm.m and the breaking-down field strength of larger than 30KV / mm and has the advantages of excellent electric performance, higher thermal ageing performance and physical and mechanical performance, simple preparation process and strong operability.

Description

technical field [0001] The invention relates to a medium-voltage ethylene-propylene rubber insulating material, and also relates to a preparation method of the material. Background technique [0002] Existing medium-voltage ethylene-propylene rubber insulation materials only use EPDM rubber as the base material. The electrical properties of EPDM rubber, such as volume resistivity and breakdown field strength, are relatively poor, resulting in the formation of cores in relatively low Insulation breakdown is prone to occur under high voltage or short-circuit instantaneous high voltage, and only EPDM rubber is used as the base material, resulting in relatively high production costs. Contents of the invention [0003] The first object of the present invention is to provide medium voltage ethylene propylene rubber insulating material with excellent electrical performance and low production cost; [0004] The second object of the present invention is to provide a method for pre...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L23/08H01B3/28C08K13/02C08K3/22C08K5/09C08K3/34C08K5/544C08K5/18C08K5/14C08K5/3492B29B7/28
Inventor 张勇张新林磊陈文博
Owner JIANGSU HENGTONG POWER CABLE
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