Abstract
The effects of oxygen plasma treatment pressure on Aramid Fiber III chemical structure and its reinforced bismaleimides (BMI) composite humidity resistance properties were investigated. The aramid fiber III chemical structure under different plasma treatment pressure were measured by FTIR. The composite interlaninar shear strength with different plasma treatment pressure before and after absorption water were tested by short-beam bending test method, respectively. The FTIR results showed that oxygen plasma treatment didn’t change the fiber bulk chemical structure. The composite humidity resistance of interlanimar shear strength was enhanced after plasma treatment. The retention rate of composite interlanimar shear strength was above 95%.
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