Studies On The Interfacial Bond Property Of Aramid Fiber Composites

In order to improve the interracial binding strength of the composites based on aramid fiber reinforced resin, the paper embarked from the research on the resin matrix and synthesized several kinds of AFR resin as the matrix, use the aramid fiber without any surface treatment as reinforcing material. The aramid fiber/AFR composite material was manufactured by hot press molding. The interfacial bond property between the AFR resin and aramid fiber was researched by the methods such as macromechanics, micromechanics, the contact angle and section morphology. The mechanical properties, water absorption and hygroscopicity were characterized. The results show that aramid fiber/AFR composite possessed better mechanical properties, low water absorption, low hygroscopicity. The contact angle between the AFR resin solution and aramid fiber tested by hanging drop way was 42.8°,and it was lower than EP resin solutions (68°), so the AFR resin solution has good wettability with the aramid fiber surface. The transverse tensile strength of unidirectional aramid fiber reinforced AFR composite was 25.34MPa and Interlaminar shear strength was 74.64MPa. It showed that the interfacial bond property of the aramid fiber/AFR composite was excellent.