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Preparation method of rubber material with resistance against high-voltage electric breakdown

A rubber material and electric breakdown technology, which is applied in the field of preparation of high-voltage electric breakdown rubber materials, can solve the problems of difficulty in meeting the increasing requirements of rubber products, unqualified conclusions, low voltage breakdown strength performance, etc., to achieve Improved breakdown strength performance, high production efficiency, and stable quality

Inactive Publication Date: 2018-02-23
NINGBO GUANGMING RUBBER & PLASTIC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] Comparing the test items of the standard specifications, the test conditions, the test method and the standard value, the measured value, it is concluded that the third conclusion is unqualified. Therefore, the existing technology has low voltage breakdown strength performance, and it is difficult to meet the increasing requirements of the automotive industry for rubber products. Problems and deficiencies of requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0043] A method for preparing a high-voltage-resistant electrical breakdown rubber material, characterized in that it includes a formula and a preparation process, and the preparation process is as follows:

[0044] (1) Put rubber raw materials, reinforcing agents, active agents, anti-aging agents, plasticizers and processing aids into the internal mixer in sequence. The temperature of the internal mixer is set below 100°C, and the speed is set at 32 rpm. After mixing for 6 minutes, carry out debinding at a temperature below 155°C and move to the open mill for sheet cooling. After cooling to room temperature, the masterbatch is obtained;

[0045] (2) Put the masterbatch obtained in step 1 into the internal mixer, add vulcanizing agent and accelerator for mixing, and after mixing for 2 minutes, remove the rubber at a temperature below 100°C and move it to the open mixer for tableting Cooling, standing and aging for 8 hours to 240 hours to obtain a high-voltage electric breakdow...

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Abstract

The invention discloses a preparation method of a rubber material and specifically relates to the preparation method of the rubber material with resistance against high-voltage electric breakdown thatis used for preparing an automobile ignition coil rubber insulating sheath and the rubber material capable of resisting 20KV / mm voltage electric breakdown. The ethylene-propylene-diene monomer is adopted; a vulcanization system of sulfur and dicumyl peroxide is added into the formula, so that the anti-breakdown strength of the material is promoted; calcium carbonate, white carbon black and fast extruding furnace black are added into the formula, so that the anti-breakdown strength of the material is promoted; the preparation method for the rubber material capable of resisting against high-voltage electric breakdown according to the technical scheme with a corresponding preparation technology is adopted for preparing the rubber material with the anti-breakdown strength above 20Kv / mm and promoting the anti-breakdown strength of the prepared automobile ignition coil rubber insulating sheath; the preparation method disclosed by the invention has the advantages of simple process, quality stability, high production efficiency, excellent forming effect and suitability for large-scale production.

Description

technical field [0001] The invention discloses a preparation method of a rubber material, specifically refers to a kind of equipment used to make a rubber insulating sheath for an automobile ignition coil, a high-voltage electric breakdown rubber material resistant to 20KV / mm voltage breakdown rubber material method of preparation. Background technique [0002] Rubber materials are used to make rubber insulation sheaths for automobile ignition coils. However, with the increasing technical indicators of the automobile industry, it is difficult to meet the requirements of the breakdown strength greater than 20KV / mm. For example, the rubber insulation of automobile ignition coils made of traditional EPDM rubber materials The test data of sheath products are as follows: [0003] 1. Initial state [0004] 1.1 Hardness (HA) ASTM D2240-2010 59 [0005] 1.2 Tensile strength (MPa) ASTM D412-2006 10.5 [0006] 1.3 Elongation at break (%) ASTM D412-2006 496 [0007] 2. Heat air ag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L91/06C08K13/02C08K3/04C08K3/26C08K3/36C08K3/22C08K5/098C08K3/06C08K5/14
CPCC08K2003/2296C08K2003/265C08L23/16C08L2201/08C08L91/06C08K13/02C08K3/04C08K3/26C08K3/36C08K3/22C08K5/098C08K3/06C08K5/14
Inventor 周海晓周忠坤张钱旺胡余建柴海滨王兆响
Owner NINGBO GUANGMING RUBBER & PLASTIC
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