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Heat-resistant low-pressure-change rubber and preparation method thereof

A low-pressure change and rubber technology, which is applied in the field of heat-resistant low-pressure rubber, can solve the problems that rubber is easy to soften and deform, and cannot be used normally, and achieves the effects of improving wear resistance, heat resistance, and compression resistance

Active Publication Date: 2017-06-13
北京华通橡塑制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under high temperature conditions, the rubber is easy to soften and deform, which may cause it to be unable to use normally.

Method used

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  • Heat-resistant low-pressure-change rubber and preparation method thereof
  • Heat-resistant low-pressure-change rubber and preparation method thereof
  • Heat-resistant low-pressure-change rubber and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0043] A method for preparing heat-resistant low-pressure deformation rubber, comprising the following steps:

[0044] Step 1: Put 100kg EPDM rubber, 6kg zinc oxide, 12kg magnesium oxide, 2kg stearic acid, 3kg polyethylene glycol, 3kg dispersant, 2kg antiaging agent MB and 2kg antiaging agent RD into the internal mixer for reaction A section of mixed rubber was prepared in 2 minutes, and the reaction temperature was 65°C;

[0045]Step 2: Mix 40kg carbon black, 60kg magnesium powder, 60kg clay and 25kg paraffin oil and stir for 5 minutes to make a premix; pour the premix into the internal mixer in step 1 and continue mixing for 6 minutes to make the second stage Mixed rubber, the reaction temperature is 150°C;

[0046] Step 3: Adjust the roller spacing of the open mill to 6mm, put the second-stage mixed rubber in step 2 on the open mill to cover the rolls, and obtain a new film with a width of 100mm, which is filtered through a filter machine to obtain the first One film, the...

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PUM

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Abstract

The invention relates to heat-resistant low-pressure-change rubber which is prepared from the following components in parts by weight: 100 parts of ethylene propylene terpolymer, 40 to 80 parts of argil, 40 to 80 parts of strong magnesium powder, 30 to 50 parts of carbon black, 20 to 30 parts of paraffin oil, 5 to 8 parts of zinc oxide, 10 to 15 parts of magnesium oxide, 1 to 3 parts of stearic acid, 2 to 4 parts of a dispersing agent, 2 to 4 parts of polyethylene glycol, 1 to 3 parts of triallyl isocyanurate, 3 to 6 parts of an anti-aging agent, 5 to 10 parts of a vulcanizing agent, wherein the vulcanizing agent is dicumyl peroxide. The ethylene propylene terpolymer is cooperated with a preparation process, so that rubber which can resist high temperature of 150 DEG C for a long time and is relatively low in permanent set at break can be prepared.

Description

technical field [0001] The invention relates to the field of heat-resistant low-pressure rubber, more specifically, it relates to a heat-resistant low-pressure variable rubber and a preparation method thereof. Background technique [0002] In the automobile industry, with the development of automobile lightweight, the internal parts of automobiles are gradually replaced by heat-resistant and lightweight materials such as rubber. EPDM rubber has the characteristics of good heat resistance, wear resistance and weather resistance, and can be used in hydraulic brake hoses, sealing rings of engine cooling systems, and hoses for conveying coolant. [0003] The patent application publication No. CN102002194A discloses a EPDM rubber composition. The patent replaces the sulfur used in the traditional vulcanization process with the cross-linking agent BIBP and the auxiliary cross-linking agent TAIC, and adjusts the composition of the patent. The distribution and ratio meet the requir...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L91/06C08L71/02C08K13/02C08K3/04C08K3/34C08K3/22C08K5/09C08K5/14
CPCC08L23/16C08L2201/08C08L2205/03C08L2312/00C08L91/06C08L71/02C08K13/02C08K3/04C08K3/346C08K2003/2296C08K2003/222C08K5/09C08K5/14
Inventor 钱玉穆洪生李烈
Owner 北京华通橡塑制品有限公司
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