环氧树脂对聚碳酸酯／粘土纳米复合材料流变学的影响  

Effect of Epoxy Resin on the Rheological Properties of Polycarbonate/Clay Nanocomposites

作　　者：吴兰峰[1] 吴德峰[1] 张明[1] 吴亮[1] 王传红[2] 

机构地区：[1]扬州大学化学化工学院,江苏扬州225002 [2]辽宁大学化学院,辽宁沈阳110036

出　　处：《高分子材料科学与工程》2008年第6期92-95,共4页Polymer Materials Science & Engineering

基　　金：江苏省物理化学重点学科开放基金;扬州大学博士启动基金

摘　　要：采用熔融插层法制备了插层型的聚碳酸酯/环氧树脂/粘土纳米复合材料。考察了环氧树脂对该三元复合体系的形态及流变学的影响。X射线衍射和透射电子显微镜及流变行为的测试结果表明,一方面,增容剂环氧树脂的加入促进了粘土的进一步插层,增大了粘土的解离程度,粘土晶粒间相互作用的增强导致复合体系低频区模量呈现类固态平台;但另一方面,环氧树脂的引入也促进了基体的降解,使得复合体系高频区模量下降。二者共同导致复合体系的流变行为时温平移失效。Melting intercalation method was introduced successfully in preparing polycarbonate/ epoxy/clay nanoeomposites （PCM）. The effect of epoxy on the morphology and rheologieal properties of PCM was studied. The results from XRD and TEM as well as rheologieal measurements indieate that on the one hand, epoxy resin aets as a oompatiblizer, promoting further diffusion of polyearbonate ehains into gallery of the elay, and increasing the detaehment level of elay taetoids as a result. Therefore, the enhanced interaction among the elay taetoids leads to a solid-like viscoelastic behavior of PCM at the lower frequeneies. On the other hand, the addition of epoxy also promotes the degradation of the PC matrix, reducing the high-frequency modulus of PCM. The synergistic effect of these two effects results in invalidity of time-temperature superposition rule for PCM.

关 键 词：聚碳酸酯 粘土 环氧树脂 纳米复合材料 流变学 

分 类 号：TB383[一般工业技术—材料科学与工程]