PEK-C水性上浆剂对CCF/PEEK复合材料界面性能的影响  

Effect of PEK-C water-based sizing agent on interface properties of CCF/PEEK composites

作　　者：熊平 田芳林 李声耀 张兴迪 张英伟 胡天辉 王志鹏 XIONG Ping;TIAN Fanglin;LI Shengyao;ZHANG Xingdi;ZHANG Yingwei;HU Tianhui;WANG Zhipeng(Zhuzhou Times Engineering Plastics Industrial Co.,Ltd.,Zhuzhou 412007,China;Division of Energy Materials(DNL22),Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,China)

机构地区：[1]株洲时代工程塑料科技有限责任公司,湖南株洲412007 [2]中国科学院大连化学物理研究所能源材料部,辽宁大连116023

出　　处：《工程塑料应用》2024年第9期143-148,共6页Engineering Plastics Application

基　　金：国家重点研发计划项目(2022YFB3704604,2022YFC2406102)。

摘　　要：为提高聚醚醚酮(PEEK)树脂对连续碳纤维(CCF)的浸润性,改善CCF/PEEK复合材料的界面性能,采用自制的酚酞基聚芳醚酮(PEK-C)水性乳液为上浆剂,对CCF进行上浆改性,并通过叠层热压法制备了CCF/PEEK复合材料。测试了上浆前后CCF织物表面的润湿性,研究了上浆剂浓度对CCF/PEEK复合材料弯曲性能、孔隙率和层间剪切强度(ILSS)的影响。结果表明,当PEK-C水性上浆剂浓度为2%时,CCF表面接触角由上浆处理前的74.9°降低为上浆处理后的53°。采用此浓度上浆剂处理的CCF制备的CCF/PEEK复合材料,其弯曲强度、弯曲模量、ILSS分别为895 MPa,72 GPa和66.7 MPa,比未上浆处理的CCF/PEEK复合材料分别提高了95.7%,72.7%,39.8%,孔隙率仅为0.85%。PEK-C水性上浆剂可显著改善CCF与PEEK树脂的界面结合和相容性,提高CCF/PEEK复合材料的力学性能。In order to enhance the infiltration of poly(ether ether ketone)(PEEK)resin on continuous carbon fibers(CCF)and improve the interfacial properties of CCF/PEEK composites,phenolphthalein-based polyaryletherketone(PEK-C)aqueous emulsion prepared by self was used as a sizing agent to modify CCF,and CCF/PEEK composites were prepared by the laminated hot pressing method.The wettability of CCF fabric surface before and after sizing was tested,and the effects of sizing agent concentration on the flexural properties,porosity,and interlaminar shear strength(ILSS)of CCF/PEEK composite materials were studied.The results show that the contact angle of CCF surface decreases from 74.9°(prior to sizing treatment)to 53°(following sizing treatment)when the concentration of the PEK-C water-based sizing agent is 2%.The flexural strength,flexural modulus,and ILSS of CCF/PEEK composites prepared with CCF treated by sizing agent with 2%concentration are 895 MPa,72 GPa,and 66.7 MPa,which are 95.7%,72.7%,and 39.8%higher than those of the unsized CCF/PEEK composites,respectively.The porosity is only 0.85%.The PEK-C water-based sizing agent has been demonstrated to significantly enhance the interfacial bonding and compatibility between CCF and PEEK,as well as to improve the mechanical properties of CCF/PEEK composites.

关 键 词：碳纤维 聚醚醚酮 酚酞基聚芳醚酮 水性上浆剂 界面性能 

分 类 号：TQ323.6[化学工程—合成树脂塑料工业]