等离子体处理的时效性对芳Ⅲ/双马复合材料耐湿热性能的影响  

Effects of Plasma Aging Behaviour on Damp Heat Resistance of Aramid Fiber Ⅲ/BMI Composite

作　　者：王静[1] 孟伶智 任航 冯佳月 时晨 任荣[1] WANG Jing;MENG Ling-zhi;REN Hang;FENG Jia-yue;SHI Chen;REN Rong(Liaoning Key Laboratory of Advanced Polymer Matrix Composites Manufacturing Technology, Faculty of Aerospace Engineering, Shenyang Aerospace University, Shenyang 110136, China)

机构地区：[1]沈阳航空航天大学航空航天工程学部辽宁省先进聚合物基复合材料制备技术重点实验室,沈阳110136

出　　处：《装备环境工程》2018年第2期41-44,共4页Equipment Environmental Engineering

基　　金：国家自然科学基金(51403129);大学生创新创业训练项目(S1610305;X1612006)

摘　　要：目的考察等离子体处理前后及其时效性对芳Ⅲ/双马复合材料弯曲强度、界面性能及耐湿热性能的影响。方法用低温射频耦合等离子体处理芳纶纤维表面,分别将未处理的、等离子体刚处理过的和等离子体处理后在空气中放置三天后的纤维通过溶液预浸渍工艺制备芳Ⅲ/双马复合材料预浸料,再经过高温模压成形技术制备芳Ⅲ/双马复合材料单向板。采用万能材料试验机对水煮前后复合材料的弯曲强度和层间剪切强度进行测试,利用扫描电子显微镜对复合材料层间剪切破坏形貌进行观察。结果等离子体处理后,复合材料的吸水率由未处理时的0.51%下降到0.33%,复合材料层间剪切强度由49.4 MPa提高到62.9 MPa。等离子体处理时效后复合材料的吸水率增加到0.69%,复合材料的层间剪切强度下降到56.0 MPa。结论等离子体处理提高了复合材料界面性能,但等离子体处理的时效后,复合材料的界面性能及其耐湿热性能有所下降。等离子体处理及时效性对复合材料的弯曲强度和耐湿热性能变化不大。Objective To observe effects of plasma treatment and aging behavior on bending strength, interlaminar shear strength and damp heat resistance of aramid fiber reinforced bismaleimide （BMI） composite. Methods The aramid fiber surface was modified by low temperature inductive coupled plasma. The aramid fiber Ⅲ reinforced bismaleimide composites before and after plasma treatment and aging were prepared through solution impregnating technique after be-ing exposed in air for three days. The composite bending strength and interlaminar shear strength before and after water absorption were measured with a universal material testing machine. The composite shear rupture morphology was ob-served by Scanning Electron Microscope （SEM）. Results After plasma processing, the water absorption rate decreased from 0.51% to 0.33%, the interlaminar shear strength （ILSS） value increased from 49.4 MPa to 62.9 MPa. However, the water absorption rate increased to 0.69% and the ILSS value decreased to 56.0 MPa after plasma aging. Conclusion Plasma treatment improves interfacial properties of composite. But the interfacial properties and damp heat resistance of composite decrease to some extend after aging behavior of plasma processing. Plasma treatment and aging behavior have little effect on bending strength of composite.

关 键 词：芳Ⅲ 聚合物基复合材料 等离子体时效性 耐湿热性能 

分 类 号：TJ04[兵器科学与技术—兵器发射理论与技术] TB324[一般工业技术—材料科学与工程]