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Seals

A seal and rubber technology, which is applied to sealing devices, engine seals, vehicle parts, etc., can solve problems such as shortened product life and reduced workability

Active Publication Date: 2020-10-20
MITSUBISHI CABLE IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, there is a problem that the life of the product is shortened due to a decrease in workability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] The first rubber component (bonded acrylonitrile amount: 49.2% by mass, iodine value: 23 mg / 100 mg) as the first HNBR and the second HNBR were mixed at a mass ratio of the first rubber component / second rubber component = 90 / 10. The second rubber component (amount of bonded acrylonitrile: 44.2% by mass, iodine value: 24mg / 100mg) forms a rubber component, and styrene, which is an aromatic secondary amine anti-aging agent, is added to 100 parts by mass of the rubber component. 2 parts by mass of diphenylamine, 4.5 parts by mass of processing aid, 60 parts by mass of carbon black as a reinforcing agent, 5 parts by mass of polyether ester plasticizer, 5 parts by mass of organic peroxide as a crosslinking agent and co-crosslinking A non-crosslinked rubber composition was prepared by kneading 3 parts by mass of liquid polybutadiene rubber as an agent, and this non-crosslinked rubber composition was designated as Example 1.

Embodiment 2

[0056] Except for the mass ratio of the first rubber component / second rubber component=85 / 15, an uncrosslinked rubber composition identical to that of Example 1 was prepared, and this uncrosslinked rubber composition was designated as Example 2.

Embodiment 3

[0058] Except for the mass ratio of the first rubber component / second rubber component=80 / 20, an uncrosslinked rubber composition identical to that of Example 1 was prepared, and this uncrosslinked rubber composition was designated as Example 3.

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Abstract

The invention discloses a sealing element. The seal (10) is formed of a rubber composition mainly comprising hydrogenated nitrile rubber as a rubber component. The rubber component includes a first hydrogenated nitrile rubber having an acrylonitrile content of not less than 48.0% by mass and not more than 52.0% by mass, and a second hydrogenated nitrile rubber having a lower acrylonitrile content than the first hydrogenated nitrile rubber.

Description

technical field [0001] The present invention relates to a seal. Background technique [0002] It is known that seals are formed from rubber compositions with hydrogenated nitrile rubber as the rubber component. Japanese Laid-Open Patent Publication No. 2013-142147 discloses a rubber combination in which fluororesin powder and carbon black are added to hydrogenated nitrile rubber and the hydrogenated nitrile rubber is cross-linked with an organic peroxide The material forms the seal for the sliding part. SUMMARY OF THE INVENTION [0003] - The technical problem to be solved by the invention - [0004] In the case of a pneumatic solenoid valve, if the seal of the seal embedded or embedded on the spool swells in contact with the drain (drain) in which the water and oil contained in the compressed air are mixed together, the The sliding resistance between the seal of the seal and the housing increases. As a result, there is a problem that the workability is lowered and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L15/00C08L9/00C08K13/02C08K5/18C08K3/04
CPCC08L15/005C08L2205/025C08L2205/035C08L9/00C08K13/02C08K5/18C08K3/04F16J15/102F16K11/0712F16K25/00F16K31/06F16K31/0613C09K3/1006C09K2200/0607C09K2200/0458C09K2200/066C09K2003/1068
Inventor 平野耕生池原润一郎西村宽西川智己宮代浩己
Owner MITSUBISHI CABLE IND LTD