摘要
In order to improve the surface adhesion of high strength and high modulus poluethylene （PE）fibers with epoxy resin,graft polymerization of some monomers by electron beam（EB）pre-radia-tion was performed on the surtacc of PE fibers.In the paper,the Van de Graft accelerator waschosen as a radiation resource.And we found from our studies that no sensitizer was needed in EBpre-radiation polymerization under the atmosphere of N<sub>2</sub>,and acrylic acid was most effective inthe polymerization of methyl methacrylate,acrylic acid and methacrylic acid.The degree of graftincreased with the enhancing of pre-radiation dose,reaction temperature and reaction time.Acetone and benzene were effective solvents for acrylic acid.Oligomer which exists during thepolymerization could be removed by washing with benzene.Grafted fiber was analyzed by SEMand ATR-IR and it was confirmed that some polar groups were introduced to the surface of PE fi-ber.The tensile strength of PE fibers did not decrease greatly when pre-radiation dose was lessthan 1.56×10<sup>4</sup> Gy.
In order to improve the surface adhesion of high strength and high modulus poluethylene (PE) fibers with epoxy resin,graft polymerization of some monomers by electron beam(EB)pre-radia- tion was performed on the surtacc of PE fibers.In the paper,the Van de Graft accelerator was chosen as a radiation resource.And we found from our studies that no sensitizer was needed in EB pre-radiation polymerization under the atmosphere of N_2,and acrylic acid was most effective in the polymerization of methyl methacrylate,acrylic acid and methacrylic acid.The degree of graft increased with the enhancing of pre-radiation dose,reaction temperature and reaction time. Acetone and benzene were effective solvents for acrylic acid.Oligomer which exists during the polymerization could be removed by washing with benzene.Grafted fiber was analyzed by SEM and ATR-IR and it was confirmed that some polar groups were introduced to the surface of PE fi- ber.The tensile strength of PE fibers did not decrease greatly when pre-radiation dose was less than 1.56×10~4 Gy.
