Rubber composition for hose and hose
The present invention is to provide a rubber composition for a hose and the like, the rubber composition having excellent oil resistance and low-temperature performance. A rubber composition for a hose, the rubber composition comprising: a hydrogenated acrylonitrile butadiene rubber having an acrylonitrile amount of 24 mass % or less, a carbon black, a peroxide, and a triallyl isocyanurate; a content of the peroxide being 2.4 parts by mass or more per 100 parts by mass of the hydrogenated acrylonitrile butadiene rubber; and a content of the triallyl isocyanurate being 1.9 parts by mass or more per 100 parts by mass of the hydrogenated acrylonitrile butadiene rubber, and a hose formed by using the rubber composition for a hose.
1. A rubber composition for a hose, the rubber composition comprising:
a hydrogenated acrylonitrile butadiene rubber having an acrylonitrile amount of 24 mass % or less, a carbon black, a peroxide, a triallyl isocyanurate, and a diallyl compound;
a content of the peroxide being 2.4 parts by mass or more per 100 parts by mass of the hydrogenated acrylonitrile butadiene rubber;
a content of the triallyl isocyanurate being 3.5 to 5 parts by mass per 100 parts by mass of the hydrogenated acrylonitrile butadiene rubber; and
a content of the diallyl compound being 7 to 20 parts by mass per 100 parts by mass of the hydrogenated acrylonitrile butadiene rubber; and
the hydrogenated acrylonitrile butadiene rubber is a hydrogenated product of a copolymer consisting of acrylonitrile and butadiene.
2. The rubber composition for a hose according to claim 1 , wherein a hydrogenation percentage of the hydrogenated acrylonitrile butadiene rubber is from 95 to 100%.
3. The rubber composition for a hose according to claim 1 , wherein a content of the carbon black is from 40 to 150 parts by mass per 100 parts by mass of the hydrogenated acrylonitrile butadiene rubber.
4. The rubber composition for a hose according to claim 1 , wherein the acrylonitrile amount of the hydrogenated acrylonitrile butadiene rubber is from 18 to 22 mass %.
5. The rubber composition for a hose according to claim 1 , wherein the content of the peroxide is from 2.8 to 6 parts by mass per 100 parts by mass of the hydrogenated acrylonitrile butadiene rubber.
6. A hose formed by using the rubber composition for a hose according to claim 1 .
7. The hose according to claim 6 , further comprising an inner tube formed by using the rubber composition for a hose.
8. The hose according to claim 6 , wherein a fluid having an aniline point of 105° C. or higher is flowed.
9. The hose according to claim 6 , wherein the hose is for an automobile.
10. The hose according to claim 6 , wherein the hose is for a power steering system pipe for an automobile.