Anti-ultraviolet PBO fiber based on surface grafting modification of calcium oxide doped cerium dioxide nanoparticles and preparation method of anti-ultraviolet PBO fiber

The invention belongs to the field of high-performance fiber preparation, and discloses an anti-ultraviolet PBO fiber based on calcium oxide doped cerium dioxide (Ce0. 8Ca0. 2O1. 8) nanoparticle surface grafting modification and a preparation method thereof. The preparation method specifically comprises the following steps: by taking PBO fiber as a raw material, generating carboxyl on the surface of the PBO fiber by adopting a chemical etching method; a silane coupling agent is used for grafting and modifying graphene oxide (GO) and calcium oxide doped cerium dioxide (Ce0. 8Ca0. 2O1.8) nano particles, finally, a surface grafting method is used for grafting epoxy groups in the silane coupling agent to carboxyl groups on the surface of PBO fibers, the PBO/Ce0. 8Ca0. 2O1.8-KH560-GO anti-ultraviolet fibers are prepared, and compared with untreated PBO fibers, the PBO/Ce0. 8Ca0. 2O1.8-KH560-GO anti-ultraviolet fibers have the good anti-ultraviolet performance; the grafting modification method is simple to operate,