摘要
以4,4'-二苯氧基二苯砜(DPODPS)和4,4'-联苯二甲酰氯(BPPC)为原料,采用亲电缩合反应制备了主链含联苯结构单元的聚芳醚砜醚酮酮(PESEKDK),并用红外(FT-IR)、广角X-射线衍射(WAXD)、示差扫描量热法(DSC)、热重法(TGA)等手段对其进行了表征.结果表明:PESEKDK的玻璃化转变温度(Tg)为207℃,在238℃、264℃、283℃处出现3个熔融峰;热分解温度(Td)为561℃,说明聚合物的耐热性能优良.以质量比为50%的T700短碳纤维和PESEKDK熔融共混制备的复合材料的拉伸强度为286 MPa,拉伸模量为30.9 GPa,表明复合材料具有优良的力学性能.
Biphenyl-containing poly(aryl ether sulfone ether ketone ketone)is synthesized via electrophilic Friedel-Crafts solution copolycondensation of 4,4′-Biphenyldicarboxylic dichloride(BPPC)with 4,4′-diphenoxy diphenyl sulfone(DPODPS).The obtained playmer is characterized by FT-IR,WAXD,DSC,TGA different techniques.The thermal stability of the polymer is excellent,the glass transition temperatures(T g)is 207℃,melting temperatures are 238℃,264℃,283℃,and the thermal decomposition temperature is 561℃.The mechanical properties of composites from fifty percent short carbon fibers(T700)and fifty percent Biphenyl-containing poly(aryl ether sulfone ether ketone ketone)(PESEKDK)show a great mechanical performance,and tensile strength is 286 MPa,tensile modulus is 30.9 GPa.
作者
刘勇军
周丽云
王利云
洪慧铭
宋琤
唐传超
宋才生
LIU Yongjun;ZHOU Liyun;WANG Liyun;HONG Huiming;SONG Cheng;TANG Chuanchao;SONG Caisheng(College of Chemistry and Chemical Engineering,Jiangxi Normal University,Nanchang Jiangxi 330022,China;Jiujiang Special Plastic Industry Limited Liability Company,Jiujiang Jiangxi 332726,China)
出处
《江西师范大学学报（自然科学版）》
CAS
北大核心
2018年第5期473-476,共4页
Journal of Jiangxi Normal University(Natural Science Edition)
基金
国家自然科学基金(51663011)资助项目
关键词
短碳纤维
聚芳醚砜醚酮酮
复合材料
力学性能
short carbon fiber
poly(aryl ether sulfone ether ketone ketone)
composites
mechanical properties
