Carbon fiber cord for reinforcing rubber product and rubber product using the same
AssigneeNippon Sheet Glass Co., Ltd.
InventorShinya Katagiri
Life of this patent
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Abstract
The present invention provides a carbon fiber cord having both high bending fatigue resistance and high adhesiveness. The disclosed carbon fiber cord is a carbon fiber cord for reinforcing a rubber product. This carbon fiber cord includes a carbon fiber, a first coating layer formed on the carbon fiber, and a second coating layer formed over the first coating layer. The first coating layer contains a phenolic resin and does not contain a rubber component. The second coating layer contains a rubber component. The mass ratio of the first coating layer to the total mass of the carbon fiber and the first coating layer is in a range of 0.5% to 10%.
Claims19
A carbon fiber cord for reinforcing a rubber product, wherein the cord comprises:
- a carbon fiber;
- a first coating layer formed on the carbon fiber;
- and
- a second coating layer formed over the first coating layer, wherein
- the first coating layer contains a phenolic resin and does not contain a rubber component,
- the second coating layer contains a rubber component and is formed using a treatment agent that contains the rubber component and a crosslinking agent which is at least one of a diisocyanate compound, a polyisocyanate, an aromatic nitroso compound, and a maleimide-based crosslinking agent and does not contain an initial condensate of resorcin and formaldehyde,
- a mass ratio of the first coating layer to a total mass of the carbon fiber and the first coating layer is in a range of from 0.5% to 10%, and
- a mass ratio of the second coating layer to a total mass of the carbon fiber, the first coating layer, and the second coating layer is in a range of from 10% to 25%.
Dependencies are inferred from the claim text.