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Electric insulating rubber and fabrication method thereof

A technology of insulating rubber and electric power, which is applied in the production of electric insulating rubber and the field of electric insulating rubber. It can solve problems such as insufficient insulation of insulating rubber, harm to human body and environment, and complicated manufacturing process, and achieve excellent electrical and physical properties. The effect of fast vulcanization speed and stable production process

Active Publication Date: 2013-08-21
武汉科能电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the insulating rubber currently on the market has problems such as insufficient insulation and easy corrosion, and the manufacturing process is complicated, which is harmful to the human body and the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] An electric insulating rubber, which is composed of the following components: 100Kg of Dow EPDM4520, 30Kg of calcined kaolin, 0.1Kg of rubber vulcanization accelerator PZ, 2Kg of stearic acid, 30Kg of paraffin oil with kinematic viscosity of 10mm2 / s, and indirect method of zinc oxide 8Kg, rubber accelerator CZ 0.3Kg, liquid EPDM 5Kg, fumed silica 25Kg, silane coupling agent 0.5Kg, sulfur 2Kg, rubber accelerator DM 1Kg.

[0029] its production method

[0030] 1) Weigh each component;

[0031] 2) Segmented banburying

[0032] First add: Dow EPDM4520, liquid EPDM, fumed silica, calcined kaolin, 50% by mass paraffin oil, silane coupling agent, at 55~65°C, air pressure 0.5~0.8Mpa, banburying After 3 minutes, add zinc oxide, stearic acid and paraffin oil at an air pressure of 0.5-0.8Mpa and 75-85°C for another 10 minutes and then remove the glue.

[0033] 3) Sulfur addition and kneading operation of the open mill to produce flakes

[0034] Put the rubber discharged from t...

Embodiment 2

[0037] An electric insulating rubber, which is composed of the following components: 100Kg of Dow EPDM4520, 20Kg of calcined kaolin, 0.3Kg of rubber vulcanization accelerator PZ, 1Kg of stearic acid, 40Kg of paraffin oil with kinematic viscosity of 15mm2 / s, and indirect method of zinc oxide 5Kg, rubber accelerator CZ 0.5Kg, fumed silica 15Kg, Lion Chemical T67 5Kg, silane coupling agent 0.5Kg, sulfur 2Kg, rubber accelerator DM 1Kg.

[0038] Preparation method is the same as embodiment 1

Embodiment 3

[0040] An electric insulating rubber, which is composed of the following components: 100Kg of Dow EPDM4520, 24Kg of calcined kaolin, 0.3Kg of rubber vulcanization accelerator PZ, 1.5Kg of stearic acid, 35Kg of paraffin oil with kinematic viscosity of 7mm2 / s, oxidized by indirect method Zinc 7Kg, rubber accelerator CZ 0.3g, fumed silica 15Kg, liquid EPDM 10Kg, silane coupling agent 1.5Kg, sulfur 1.5Kg, rubber accelerator DM 0.5Kg.

[0041] Preparation method is the same as embodiment 2

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Abstract

The invention belongs to the technical field of rubber, discloses electric insulating rubber and a fabrication method thereof, and aims at providing electric insulating rubber which is good in insulativity and simple in fabrication method. The electric insulating rubber adopts the technical scheme that the electric insulating rubber comprises the following components in parts by weight: 100 parts of EPDM (Ethylene-Propylene-Diene Monomer), 20-30 parts of calcined kaolin, 0.1-0.3 parts of thiofide PZ, 1-2 parts of stearic acid, 30-40 parts of paraffin oil, 5-8 parts of indirect-method zinc oxide, 0.3-0.5 parts of rubber accelerator CZ, 5 parts of liquid EPDM, 15-25 parts of fumed silica, 0.5-1.5 parts of silane coupling agent, 1-2 parts of sulfur and 1-2 parts of rubber accelerator DM. The fabrication method of the electric insulating rubber comprises the following steps of 1) weighing the components, 2) conducting internal mixing by sections, 3) adding sulfur to an open mill for mixing, and outputting sheet rubber, and 4) placing for 4-8h to allow rubber materials to be more uniform.

Description

technical field [0001] The object of the present invention is to provide a kind of rubber, specifically, a kind of electric insulating rubber. The present invention also discloses the manufacturing method of the electric insulating rubber, which belongs to the technical field of rubber. Background technique [0002] The insulating rubber currently on the market is mainly ethylene-propylene rubber. The main chain of EPDM rubber is composed of chemically stable saturated hydrocarbons, and only unsaturated double bonds are contained in the side chains, so it is basically a saturated rubber. Because there are no polar substituents in the molecular structure and the cohesion between molecules is low, the molecular chain can maintain flexibility in a wide temperature range. It can be used as tire sidewall, rubber strip, inner tube and automobile parts, as well as wire, cable sheath and high-voltage and ultra-high-voltage insulation materials. It can also manufacture light-colored...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08K13/02C08K3/34C08K5/09C08K5/01C08K3/22C08K3/36C08K3/06H01B3/28
Inventor 柳彬谌保华
Owner 武汉科能电气有限公司
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