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Acid-resistant rubber composition and application thereof, vulcanized rubber and preparation method and application thereof

A rubber composition and composition technology, applied in the field of rubber, can solve the problems of low mechanical strength and high acid resistance performance that cannot meet the requirements, and achieve the effects of good mechanical performance, excellent acid resistance performance and high retention rate

Pending Publication Date: 2022-03-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to solve the problem that the mechanical strength of the existing bromobutyl rubber is low, and the acid resistance performance cannot meet the high requirements of the application field

Method used

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  • Acid-resistant rubber composition and application thereof, vulcanized rubber and preparation method and application thereof
  • Acid-resistant rubber composition and application thereof, vulcanized rubber and preparation method and application thereof
  • Acid-resistant rubber composition and application thereof, vulcanized rubber and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] The composition formula of this embodiment is shown in Table 2.

[0083] The preparation method of vulcanized rubber is as follows:

[0084] First mixing:

[0085] Set the initial temperature of the internal mixer to 75°C and the rotational speed to 80rpm, and add the rubber matrix, EPDM rubber, powdered nitrile rubber, reinforcing agent, calcium sulfate whiskers, vulcanization activator, anti-aging agent and plasticizer to the internal mixing Carry out the first mixing in the machine for 6 minutes, deglue, and park for 4 hours to obtain the masterbatch.

[0086] Second mixing:

[0087] Set the initial temperature of the internal mixer to 50°C and the rotational speed to 60 rpm, put the masterbatch, vulcanizing agent and vulcanization accelerator into the internal mixer, mix for 4 minutes, and discharge the rubber.

[0088] Pass the rubber compound obtained by the above method once on the open mill (that is, tableting) with a roller distance of 0.5mm and a roller tem...

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Abstract

The invention relates to the field of rubber materials, and discloses an acid-resistant rubber composition and application thereof, vulcanized rubber as well as a preparation method and application thereof, the composition contains a rubber matrix, powdered nitrile rubber, a reinforcing agent, calcium sulfate whiskers, a vulcanizing agent, a vulcanization accelerator, a vulcanization activator and a plasticizer, and optionally contains an anti-aging agent, the rubber matrix is a combination of brominated nitrile rubber and ethylene propylene diene monomer, and the reinforcing agent is a combination of carbon black and white carbon black. The vulcanized rubber prepared by applying the rubber composition disclosed by the invention is excellent in acid resistance and good in basic mechanical property.

Description

technical field [0001] The invention relates to the field of rubber, in particular to an acid-resistant rubber composition and its application, vulcanized rubber and its preparation method and application. Background technique [0002] When rubber products are in contact with acid medium, the molecular structure of rubber will be irreversibly changed due to chemical action. At the same time, the various compound systems in rubber products may also decompose and dissolve under acidic conditions, which will significantly reduce the performance and even cause the product to lose its use. value. At present, many kinds of rubber products (such as acid and alkali resistant gloves, sole materials, sealing materials, high-performance rubber hoses, etc.) may need to be used in acid medium environments for short or long periods. This type of rubber products is especially used in some high-end Rubber components in the field of equipment manufacturing have clear requirements on the aci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/28C08L23/16C08L91/06C08L45/02C08L57/02C08K13/04C08K7/08C08K7/26C08K3/04C08K3/06C08K3/22C08K5/47
CPCC08L23/283C08L2205/02C08L2205/03C08L2205/035C08K2003/2296C08L23/16C08L91/06C08L45/02C08K13/04C08K7/08C08K7/26C08K3/04C08K3/06C08K3/22C08K5/47C08L57/02
Inventor 郑方远刘苹李绍宁段海东乔勋昌
Owner CHINA PETROLEUM & CHEM CORP
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