聚醚酮酮的合成、表征与结晶行为

聚醚酮酮的合成、表征与结晶行为＊王军佐郑玉斌柯扬船于冬宏＊＊吴忠文（吉林大学化学系长春１３００２３）关键词聚醚酮酮，结晶结构，低温熔融峰，热处理聚醚醚酮８０年代初由英国ＩＣＩ公司商品化，由于其优异的性能，已在宇航、军工、核能等领域得到了广泛的应用，聚...

SYNTHESIS,CHARACTERIZATION,CRYSTALLIZATION OF POLY(ETHER KETONE KETONE)

The all para polyether ketone ketone (PEKK) whic possesses good mechanical properties was synthesized by the high temperature condensation reaction between 1,4-bis (4’-hydroxybenzoyl) benzene and 1,4-bis(4’-fluorobenzoyl) benzene,the general properties of PEKK were characterized by DSC,IR,TGA,WAXD and Mechanical Properties Measurement.The results indicate that the melting temperature of PEKK is 50℃ higher than that of PEEK and still keep the high temperature resistant property of PEEK,the crystallization structure of PEKK still assigns to orthorhombic system.When amorphous PEKK was annealed below 230℃,the glass transition temperature increase with the increasing of the heat treatment temperature,while above 230℃,the glass transition temperature keep a constant,the low melting peaks linearly increase when annealing temperature are increased,the high melting peaks keep a constant regardless of the heat treatment temperature.The crystal structure of the slow-cooling crystallization specimens have a distinction with that of heat treatment crystallization samples.