水悬浮法制备GF／PVC复合材料的界面形态和形成机理

应用扫描电镜、红外光谱、电子探针等方法研究了水悬浮法制备GF/PVC复合材料的界面形态和形成机理 ,研究结果表明 :由含有I,II,III ,V号悬浮液制备的复合材料 ,其纤维与机体的界面粘结和界面相互作用主要是纤维表面与这些高分子添加剂之间的物理作用 ,由Ⅳ号悬浮液制备的复合材料 ,其两相间的界面粘接很好 ,界面相互作用以化学相互作用为主。纤维经KH5 5 0或KH5 6 0及LCB或LCM复合涂层处理 ,材料纤维与基体间的界面相互作用主要归结为偶联剂的活性基团与聚合物涂层及PVC的化学作用

Interphase and its formational mechanism of GF/PVC composite prepared by aqueous suspension impregnation

Interphase and its formational mechanism of GF/PVC composite prepared by aqueous suspension impregnation was studied by FT IR, microscopy, electron probe and so on, The result showed that the interfacial adhesion and interaction of the composites prepared by the suspension containing I II, III or V latex were due mainly to the physical interaction between the binder and fibers On the other hand, the interfacial binding and interaction of the composite prepared by the suspension containing IV latex were evidenced to involve dominantly chemical interaction and bonding between the fibers and matrix For the composites prepared by the systems of which the fibers were coated with KH 550 or KH 560/LCM or LCB complex surface coating, the interfacial binding and interaction were due mainly to the chemical interaction of the functional groups of the coupling agent with the LCM or LCB coating and PVC matrix