Nitrile copolymer rubber composition, crosslinkable rubber composition, and crosslinked rubber

A technology of rubber composition and nitrile copolymer, applied in the field of cross-linkable rubber composition and rubber cross-linked product, can solve the problem of insufficient compression set resistance, and achieve the effect of excellent compression set resistance

Inactive Publication Date: 2016-01-06
ZEON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cross-linked rubber obtained by using the nitrile rubber composition disclosed in Patent Document 1 has insufficient compression set resistance, and when used as a sealing material, further improvement in compression set resistance is required.

Method used

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  • Nitrile copolymer rubber composition, crosslinkable rubber composition, and crosslinked rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] To 100 parts of hydrogenated acrylonitrile-butadiene copolymer rubber (A1) (trade name "Zetpol 2020", manufactured by ZEON CORPORATION, acrylonitrile content: 36% by weight, iodine value: 28) was added hardener using a Banbury mixer. 1 part of fatty acid, silica (B1) (trade name "Nipsil EL", manufactured by Tosoh Silica Corporation, BET specific surface area: 44m 2 / g) 40 parts, Tris-2-ethylhexyl trimellitate (trade name "Adeka サイザー C8", manufactured by ADEKA CORPORATION, plasticizer) 20 parts, 4,4'-bis(α,α-dimethyl Benzyl benzyl) diphenylamine (trade name "NocracCD", Ouchi Shinko Chemical Co., Ltd., antioxidant) 1.5 parts, 2-mercaptobenzimidazole zinc salt (trade name "NocracMBZ", Ouchi Shinko Chemical Co., Ltd., Antiaging agent) 1.5 parts, vinyl tris (2-methoxyethoxy) silane (trade name "Dynasilane VTMOEO", manufactured by Evonik Degussa GmbH, silane coupling agent (C) (vinyl silane coupling agent)) 1 part, 2 parts of diethylene glycol and 4 parts of trimethylolpropa...

Embodiment 2

[0096] Except changing the blending amount of trimethylolpropane triacrylate as a crosslinking auxiliary agent (E) from 4 parts to 8 parts, the same operation as in Example 1 was carried out to prepare a crosslinkable rubber composition and carry out Same rating. The results are shown in Table 1.

Embodiment 3

[0098] In addition to using 100 parts of hydrogenated acrylonitrile-butadiene copolymer rubber (A2) (trade name "Zetpol 2030L", manufactured by ZEONCORATION, acrylonitrile content: 36% by weight, iodine value: 57) instead of hydrogenated acrylonitrile-butadiene copolymer Except for 100 parts of synthetic rubber (A1) (trade name "Zetpol 2020", manufactured by ZEONCORATION, acrylonitrile content: 36% by weight, iodine value: 28), a cross-linkable rubber composition was prepared in the same manner as in Example 1. evaluation of. The results are shown in Table 1.

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Abstract

The invention provides a nitrile copolymer rubber composition containing a nitrile copolymer rubber (A) having an iodine value of 20-80, and white carbon (B) having a specific surface area of 20-48 m2 / g. The invention provides a nitrile copolymer rubber composition that makes it possible to provide a crosslinked rubber having good normal physical properties as well as excellent compression set resistance under high-temperature and low-temperature conditions.

Description

technical field [0001] The present invention relates to a nitrile copolymer rubber composition, a crosslinkable rubber composition, and a rubber crosslinked product, and more specifically, to a crosslinked rubber capable of imparting good physical properties in normal state and excellent compression set resistance under high temperature and low temperature conditions A nitrile copolymer rubber composition, a crosslinkable rubber composition and a rubber crosslinked product obtained using the nitrile copolymer rubber composition. Background technique [0002] Conventionally, nitrile rubber (acrylonitrile-butadiene copolymer rubber) has been used as a material for automotive rubber parts such as hoses and inner tubes, taking advantage of its oil resistance, mechanical properties, and chemical resistance. Hydrogenated nitrile rubber (hydrogenated acrylonitrile-butadiene copolymer rubber) obtained by hydrogenating the carbon-carbon double bond in the polymer main chain has excel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08K3/34C08K5/54
CPCC08K3/36C08K5/0025C08K5/36C08K5/54C08K5/5425C08K2201/006C08L9/02C08L33/18C08K3/34
Inventor 江守宣佳荒川贵德
Owner ZEON CORP
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