【作者】 王明； 郭少云； 李姜； 沈佳斌； 许双禧；

【Author】 Wang Ming Guo Shaoyun Li Jiang Shen Jiabin Xu Shuangxi (Polymer Research Institute of Sichuan university, The State Key Laboratory of Polymer Materials Engineering, Chengdu, Sichuan, 610065 )

【机构】 高分子材料与工程国家重点实验室四川大学高分子研究所；

【摘要】 <正>近年来,W．J．Shrenck、A．Hiltner等人用共挤出的方法制备了几十到儿千层的交替多层高分子复合材料。这类材料不仅同时具有两种不同聚合物材料的优良特性,而且还会产生协同效应,使其在力学性能、阻隔性能、光学性能、导电性能等方面具有独特之处。另外,此种材料为扩散、粘接、结晶等基础理论研究提供了很好的模型。更多还原

【Abstract】 A multilayer co-extrusion system was designed by our laboratory. The system contains two extruders, feed block, multiplying elements, water chill block, and haulage drum. An assembly of n multiplying elements produces 2(n+1) layers. A 32-layer PA/HDPE and a 64-layer PS/EPDM multilayer composite were produced by our system. SEM analysis indicates that our system can realize alternative multilayer structure. The properties of the multilayer composites are much more different from the conventional blends. For example, the PS/EPDM conventional blends are opaque, while 64-layer PS/EPDM composites are all transparent.更多还原