The study involves the processing of a novel poly [1, 4-phenylene-cis-benzobisoxazole] (PBO) fibre reinforced high-temperature thermoplastic composite with polyaryletherketone (PAEK) as the matrix. The PBO fibre and the PAEK film surface was modified using the method of argon and nitrogen plasma treatment. The investigation primarily focuses on evaluating the tensile properties of the fabricated laminates and correlating it with the effect of plasma treatment, surface characteristics, and its fracture surface. A 5% decrease in tensile strength was observed post argon plasma treatment while a 27% increase in strength was observed post nitrogen plasma treatment. The morphology of the failure surface was investigated by scanning electron microscopy and an interfacial failure was observed. Furthermore, the effect of plasma on the wettability of PBO fibres and PAEK film surface was confirmed by the Dynamic Contact Angle analysis and sessile drop method respectively. FTIR spectral analysis was done to investigate the effect of plasma treatment on the chemical structure on the surface. The results of the wettability study showed that the argon plasma treatment of the fibre surface increased its hydrophobicity while nitrogen plasma treatment resulted in the reduction of contact angle.

该研究涉及以聚芳基醚酮（PAEK）为基质的新型聚[1,4-亚苯基-顺-苯并双恶唑]（PBO）纤维增强的高温热塑性复合材料的加工。使用氩气和氮气等离子体处理的方法对PBO纤维和PAEK膜表面进行了改性。研究主要集中在评估制成的层压板的拉伸性能，并将其与等离子处理效果，表面特性及其断裂表面相关联。在氩气等离子体处理后观察到拉伸强度降低了5％，而在氮等离子体处理后观察到了强度提高了27％。通过扫描电子显微镜研究破坏表面的形态，并观察到界面破坏。此外，动态接触角分析法和固着滴法分别证实了等离子体对PBO纤维和PAEK膜表面润湿性的影响。进行了FTIR光谱分析以研究等离子体处理对表面化学结构的影响。润湿性研究的结果表明，纤维表面的氩等离子体处理增加了其疏水性，而氮等离子体处理导致了接触角的减小。