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NBRrubbermaterial with low compression set and preparation process thereof

A permanent deformation, low compression technology, applied in the field of rubber seals, can solve the problems of compression permanent deformation performance and comprehensive performance need to be improved, reduce compression permanent deformation rate and other problems, achieve strong adhesion, improve compression permanent deformation, heat resistance and other problems. good effect

Active Publication Date: 2022-01-04
南阳天一密封股份有限公司
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Problems solved by technology

[0005] The above two nitrile rubbers reduce the compression set rate to a certain extent, but the compression set performance and comprehensive performance need to be improved

Method used

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  • NBRrubbermaterial with low compression set and preparation process thereof
  • NBRrubbermaterial with low compression set and preparation process thereof
  • NBRrubbermaterial with low compression set and preparation process thereof

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Embodiment Construction

[0032]In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention are clearly and completely described below. Apparently, the described embodiments are some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention belong to the protection scope of the present invention.

[0033] A low compression set NBR rubber compound, made of the following raw materials in mass fraction: 44.15-44.75% of rubber body, 1.11-2.43% of vulcanizing agent, 1.32-1.34% of vulcanization auxiliary agent, 0.88-0.89% of protective agent, reinforcement Agent 48.57-49.22%, activator 2.65-2.70%.

[0034] The rubber main body is NBR-40 rubber and NBR-28 rubber; the weight ratio of the two is: NBR-40 rubber:NBR-28 rubber is 4:1.

[0035] Described vulcanizing agent is: 1,3-tw...

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Abstract

The invention discloses an NBR rubber material with low compression set and a preparation process thereof, belonging to the technical field of rubber sealing elements. The NBR rubber material is prepared from the following raw materials by mass: 44.15-44.75% of a main rubber body, 1.11-2.43% of a vulcanizing agent, 1.32-1.34% of a vulcanizing aid, 0.88-0.89% of a protective agent, 48.57-49.22% of a reinforcing agent, and 2.65-2.70% of an activator. According to the invention, NBR rubber and various assistants are reasonably selected, so the compression set performance of the rubber material is improved, and the prepared product meets environmental protection requirements; product quality cost is controlled to be within a reasonable range; and through adjustment, the tensile strength of the NBR rubber material is not less than 10 Mpa, a compression set test shows that a compression set rate does not exceed 20% under the conditions of compression of 25% and 150 DEG C * 70 h in ASTM 903, and comprehensive performance is good.

Description

technical field [0001] The invention relates to the technical field of rubber seals, in particular to a low compression set NBR rubber compound and a preparation process thereof. Background technique [0002] Rubber products are used to prevent the fluid medium from leaking from the sealed device, and also prevent external dust, sand and air (for vacuum) from entering the inside of the sealed device. Although this type of seal is small, it plays an important role in ensuring the performance of various devices and facilities, saving materials and energy, and preventing environmental pollution. It is widely used in various machinery, instruments, pipelines, household appliances, vehicles and other transportation tools, and the construction industry, etc. Rubber sealing products will produce permanent deformation under the joint action of mechanical force, medium, oxygen and temperature, which will eventually lead to seal failure. Therefore, the compression permanent deformati...

Claims

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Application Information

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IPC IPC(8): C08L9/02C08L25/12C08K13/04C08K3/04C08K7/26C08K5/14C08K3/06C08K5/47C08K5/40C08K5/39C08K5/37C08K5/3437C08K3/22
CPCC08L9/02C08L2201/08C08L2205/025C08K2003/2296C08L25/12C08K13/04C08K3/04C08K7/26C08K5/14C08K3/06C08K5/47C08K5/40C08K5/39C08K5/378C08K5/3437C08K3/22Y02T10/86
Inventor 樊红星马雷王铁忠刘元英王晓博朱建波李蕾曹正理
Owner 南阳天一密封股份有限公司
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