氩气低温等离子体处理对PBO纤维的表面改性

采用低温等离子体表面处理技术对聚苯撑苯并二口恶唑(PBO)纤维表面进行改性.选用氩气作为处理气氛,研究了气压、功率和处理时间等参数对纤维表面性质的影响.采用FT-IR和SEM等方法对处理前后纤维表面化学结构及形态结构进行了表征,并通过单丝拔出试验测定了改性前后PBO纤维与环氧树脂基体的界面剪切强度(IFSS),对纤维与树脂的界面粘结性进行了初步评价.同时,采用液滴形状法对纤维表面亲水性进行了表征.通过研究发现,经低温氩气等离子处理后,PBO纤维表面亲水性增强,PBO纤维/环氧树脂的IFSS较未处理样品提高了42%.

STUDY ON THE SURFACE MODIFICATION OF PBO FIBER BY THE TECHNOLOGY OF Ar LOW-TEMPERATURE PLASMA

PBO fiber was treated by low temperature plasma. Many factors, such as treat time, power and pressure affected the surface properties of PBO fiber were studied in the atmospheres of Ar. The surface chemical structure and morphologe of PBO fiber were characterized by the methods of FT-IR and SEM. The interfacial shearing strength (IFSS) between the fiber and epoxy resin was measured by the Single Fiber Pull-out Test. Meanwhile, the hydrophilicity of PBO fiber was investigated by droplet profile method .It is found that the surface hydrophilicity of PBO fiber is improved and IFSS of PBO fiber/epoxy increases to (42%) when the fiber was modified by the low temperature plasma.