| abstract |
(57) [Problem] To provide a method of bonding polyparaphenylene benzobisoxazole fiber (PBO fiber) and chloroprene rubber with improved adhesion. The bonding method comprises treating a PBO fiber with a first treatment liquid comprising an epoxy compound, a vinylpyridine-styrene-butadiene copolymer rubber latex, and a heat-reactive water-soluble urethane resin, and then resorcin, formalin, And a second treatment liquid comprising chloroprene rubber latex, followed by integral vulcanization with unvulcanized chloroprene rubber. |