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AssigneeNippon Sheet Glass Co., Ltd.
InventorKenichi Nakamura
Estimating the term…
A reinforcing fiber is provided, which can exhibit sufficient adhesive strength even with single layer film coating, a fiber processing agent which can enhance the strength of adhesion between the fiber and the matrix, and a rubber product employing the reinforcing fiber. The fiber processing agent contains a rubber modified epoxy resin. The rubber modified epoxy resin is obtained by epoxidating a high molecular compound having rubber elasticity, and therefore possesses both high elasticity peculiar to rubber and high adhesive strength due to the epoxidation. The high molecular compound having rubber elasticity includes a butadiene-styrene copolymer latex, and an acrylonitrile-styrene copolymer latex, for example. This epoxidized rubber latex is combined with an emulsified phenol resin.
A fiber treatment agent comprising a rubber modified epoxy resin obtained by expoxidating an acrylonitrile-butadiene copolymer latex and a phenol resin, each of said rubber modified epoxy resin and said phenol resin being in an emulsified state.
A rubber product comprising a reinforcing fiber including an aramid fiber, and a single-layer film coated over said aramid fiber, and a rubber matrix having said reinforcing fiber embedded therein, and wherein strength of adhesion between said aramid fiber, said single-layer film, and said rubber matrix is at least 200 kgf/25 mm in width.
Dependencies are inferred from the claim text.