Rubber composition and conveyor belt using same
AssigneeThe Yokohama Rubber Co., Ltd.
InventorsHidehiro Sasakuma, Ryotaro Suefuji, Gang Hou, Atsushi Miyajima
Life of this patent
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Abstract
The present technology provides a rubber composition containing: a diene-based rubber containing a natural rubber and a butadiene rubber; a carbon black 1; and a carbon black 2. A nitrogen adsorption specific surface area of the carbon black 1 is from 60 to 100 m2/g; a dibutyl phthalate oil absorption of the carbon black 1 is 120 cm3/100 g or less; a nitrogen adsorption specific surface area of the carbon black 2 is from 20 to 40 m2/g; a dibutyl phthalate oil absorption of the carbon black 2 is from 70 to 95 cm3/100 g; and a total amount of the carbon black 1 and the carbon black 2 being from 25 to 50 parts by mass per 100 parts by mass of the diene-based rubber.
Claims5
A rubber composition comprising:
- a diene-based rubber containing a natural rubber and a butadiene rubber;
- a carbon black 1;
- and a carbon black 2;
- an amount of the natural rubber constituting from 40 to 90% by mass of the diene-based rubber;
- an amount of the butadiene rubber constituting from 60 to 10% by mass of the diene-based rubber;
- a nitrogen adsorption specific surface area of the carbon black 1 being from 60 to 100 m2/g;
- a dibutyl phthalate oil absorption of the carbon black 1 being 120 cm3/100 g or less;
- a nitrogen adsorption specific surface area of the carbon black 2 being from 20 to 40 m2/g;
- a dibutyl phthalate oil absorption of the carbon black 2 being from 70 to 95 cm3/100 g;
- and
- a total amount of the carbon black 1 and the carbon black 2 being from 25 to 50 parts by mass per 100 parts by mass of the diene-based rubber.
Dependencies are inferred from the claim text.