偶联剂对PPS/PA66/T-ZnOw复合材料力学性能的影响  

EFFECT OF COUPLING AGENTS ON MECHANICAL PROPERTIES OF PPS/PA66/T-ZNOW COMPOSITES

作　　者：吕召胜[1] 赵红玉[1] 刘苏芹 何杰[1] 郭洪鑫 

机构地区：[1]中国兵器工业集团第五三研究所,济南250031 [2]北京滨特尔洁明环保设备有限公司,北京102206

出　　处：《工程塑料应用》2008年第5期10-13,共4页Engineering Plastics Application

摘　　要：采用硅烷偶联剂KH-560和钛酸酯偶联剂TM-38S对四针状氧化锌晶须(T-ZnOw)进行表面改性,制备了相应的聚苯硫醚(PPS)尼/龙(PA)66/T-ZnOw复合材料,研究了两种偶联剂及其复合体系对T-ZnOw表面改性效果和相应复合材料力学性能的影响,并利用扫描电子显微镜对复合材料的断面形态进行了观察。结果表明,钛酸酯偶联剂TM-38S对T-ZnOw的表面改性效果要优于硅烷偶联剂KH-560;两种偶联剂均提高了复合材料的拉伸强度、断裂伸长率和缺口冲击强度,但对复合材料的弯曲强度影响不大。其中TM-38S改性T-ZnOw与PPS/PA66复合后所得材料的力学性能优于KH-560改性T-ZnOw的材料。两种偶联剂的复合体系虽然可以弥补KH-560副反应对T-ZnOw表面改性的不利影响,但对改善复合材料力学性能的协同作用不明显。The surface of tetra-needle like zinc oxide whisker （T-ZnOw） was modified by silane coupling agent （KH -560） and titanate coupling agent（TM -38S）. Then PPS/PA66/T-ZnOw composites were prepared correspondingly. The effects of two kinds of coupling agents and their compound system on the surface modification of T-ZnOw and the mechanical properties of PPS/PA66/T- ZnOw composites were investigated. Simultaneously, the micrographs of impact fracture surface of composites were studied by means of SEM. The results indicated that the surface modification effect of TM -38S on T-ZnOw was better than that of KH -560 ; the coupling agents improved tensile strength,impact strength and elongation at break of PPS/PA66/T-ZnOw composites but had no effect on bending strength： Additionally, the mechanical properties of composite with TM -38S modified T-ZnOw were better. Although the compound system of two kinds of coupling agent could improve the surface modification effect of KH - 560, it had no obvious synergistic effect on the mechanical properties of PPS/PA66/ T-ZnOw composite.

关 键 词：四针状氧化锌晶须 聚苯硫醚 尼龙66 偶联剂 表面改性 

分 类 号：TQ330.387[化学工程—橡胶工业] TB301[一般工业技术—材料科学与工程]