| abstract |
(57) [Abstract] [PROBLEMS] To provide a method for producing an aromatic polyamide fiber suitable for rubber reinforcement, which is flexible and has high adhesive strength at room temperature and high temperature. [Structure] (1) Step of immersing in an epoxy treatment liquid, drying and curing, and then (2) p-hydroxyacetanilide or anisidine and resorcin or m- The aromatic polyamide fiber is treated by a step of immersing in a second treatment liquid containing a resin obtained by co-condensing aminophenol with formaldehyde, a resorcin-formaldehyde resin and a rubber latex, followed by drying and curing. [Effect] Since the flexibility of the fiber is not lost and a high adhesive force can be obtained at room temperature and high temperature, the range of applications is expanded. |