PEEK-PEDEK嵌段共聚物的合成与热性能研究  

Synthesis and Thermal Properties of PEEK-PEDEK Block Copolymers

作　　者：王汉夫[1] 赵晓刚[1] 刘新才[1] 陈梁[1] 王力风[1] 陈春海[1] 吴忠文[1] 

机构地区：[1]吉林大学化学学院,长春130023

出　　处：《高等学校化学学报》2004年第6期1156-1159,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金 (批准号 :2 0 10 40 0 3 )资助

摘　　要：在亲核取代基础上通过分步加料法合成了一系列联苯含量不同的 PEEK-PEDEK嵌段共聚物 ,并对其热性能与结晶行为进行了初步研究 .结果表明 ,联苯的引入明显提高了聚合物的玻璃化转变温度 ;聚合物的熔点随联苯含量的增加呈先下降后上升的变化规律 ,体系在联苯含量为 2 0 %处出现最低共熔点 .A series of PEEK-PEDEK block copolymers were synthesized by one step method. Their crystallization and melting behavior were analyzed by Differential Scanning Calorimeter (DSC) and Wide Angle X-ray Diffraction (WAXD). The results show that the glass transition temperature of the copolymer increases obviously as a result of the introduction of biphenyl (BP) units. With the increasing of BP molar fraction,the melting point presents a down and up trend whereas the lowest melting point turns out at a point where the molar fraction of biphenyl is 20%. [WT5HZ]

关 键 词：聚醚醚酮/(PEEK) 嵌段共聚物 动态扫描示差热分析(DSC) 广角X射线衍射分析(WAXD) 

分 类 号：O631[理学—高分子化学]