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High temperature resistant and high pressure resistant ethylene propylene terpolymer synthetic rubber and preparation process thereof

A technology of EPDM and synthetic rubber, applied in the field of composition of rubber or its derivatives, can solve the problems of limited application scope and low cost, achieve wide application scope, prolong service life, promote technical level and application scope Effect

Inactive Publication Date: 2009-04-22
张成余
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Based on the above reasons, the scope of use of EPDM, a relatively low-cost rubber product, is limited to a certain extent.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Take 24 parts by weight of EPDM 4045 rubber and put it into the open rubber mixer when the temperature of the front roller of the rubber mixer reaches 50-60°C and the temperature of the rear roller reaches 60-70°C, and repeat mastication for 28 times. Adjust the roller distance to 5mm in the next 5 minutes, and adjust the roller distance to 2mm in the next 5 minutes. After relaxing, roll the next sheet, and make three triangle bags to make the sheet material become a strip that is beneficial to the subsequent process; take 10 parts by weight of high wear-resistant carbon black After mixing evenly with the spray carbon black of 5 parts of weight, it becomes the mixed carbon black for subsequent use; add 1 / 2 amount of mixed carbon black, 1 part of weight third-line oil, 1 part of weight of antioxidant MB, and 0.3 part of weight of antioxidant 124 rolling for 5 minutes; then add 1 part of weight active zinc oxide, remaining mixed carbon black, 1 part of weight black metal p...

Embodiment 2

[0029] When the temperature of the front roller of the rubber mixing machine reaches 55°C and the temperature of the rear roller reaches 65°C, add 20 parts by weight of EPDM 4045 rubber into the open type rubber mixing machine and repeat masticating 30 times. The roller distance is 5mm in the first 5 minutes, and then Roll distance 2mm in 6 minutes, roll the next sheet after relaxation, make three triangle bags to make the sheet material into strips to facilitate the follow-up process; get 12 parts by weight of high wear-resistant carbon black and 4 parts by weight of spray carbon black, After the two are mixed evenly, it becomes a mixed carbon black for later use; add 1 / 2 of the mixed carbon black, 3 parts by weight of third-line oil, 0.3 parts by weight of antioxidant MB, and 1 part by weight of antioxidant 124 for rolling for 8 minutes; Add 2 parts by weight of active zinc oxide, the remaining mixed carbon black, and 2 parts by weight of black metal peroxide DCP produced by ...

Embodiment 3

[0031] The exact same conditions as in Example 2, get 23 parts of EPDM 4045 rubber into the rubber mixer and masticate; get 11 parts of weight of high wear-resistant carbon black and 4.5 parts of weight of spray carbon black, both mixed After being uniform, it becomes a mixed carbon black for later use; add 1 / 2 of the mixed carbon black, 2 parts by weight of third-line oil, 0.8 parts by weight of anti-aging agent MB, and 0.5 parts by weight of anti-aging agent 124 for rolling for 8 minutes; then add 1.5 parts of Zinc oxide, the remaining mixed carbon black, and 1.5 parts of DCP continue to knead and put into sheets, which is the finished product.

[0032] With the synthetic rubber produced by the inventive method, its every performance index is as following table through GB7759-87 detection:

[0033] serial number Test items index detection value in conclusion 1 Tensile strength MPa 13.5 qualified 2 Elongation at break% ≥120 341 qualified ...

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Abstract

The invention relates to an ethylene-propylene-diene mischpolymer high-temperature and high-pressure resisting synthesized rubber and the preparing process, wherein the rubber is prepared from the following raw materials: EPDM 4045, active zinc oxide, anti-deteriorant MB, anti-deteriorant 124, wear-resisting carbon black, spray carbon black, three-wire base oil, and ferrous peroxide DCP.

Description

technical field [0001] The invention relates to a composition of rubber or its derivatives, in particular to an EPDM high temperature and high pressure resistant synthetic rubber and a preparation method thereof. Background technique [0002] Rubber products such as rubber gaskets, rings, rubber tubes and conveyor belts are widely used in various industrial fields such as mining, metallurgy, chemical industry, machinery, textiles, medicine, heat, and thermoelectricity, and have played a positive role in scientific research and industrial development. effect. However, with the continuous development of technology and industry, the requirements for its use are getting higher and higher, and the use conditions are becoming more and more harsh. For example, in some special industries, not only acid and alkali resistance, but also high temperature and high pressure resistance are required to meet the requirements. Requirements. At present, the high temperature resistance index ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/16C08K3/22C08J3/20C08K3/04C08K3/18
Inventor 张成余
Owner 张成余
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