Interface strengthening for carbon fiber-reinforced poly(ether-ether-ketone)laminated composites by introducing fluorene-containing branched poly(aryl-ether-ketone)  

作　　者：Zheng Liu Xuerong Fan Xinghan Lu Xuetao Shi Junliang Zhang Hua Guo Mukun He Junwei Gu 

机构地区：[1]Shaanxi Key Laboratory of Macromolecular Science and Technology,School of Chemistry and Chemical Engineering,Northwestern Polytechnical University,Xi'an,Shaanxi,China [2]Queen Mary University of London Engineering School,Northwestern Polytechnical University,Xi'an,Shaanxi,China

出　　处：《Interdisciplinary Materials》2024年第6期919-934,共16页交叉学科材料(英文)

基　　金：Innovation Capability Support Program of Shaanxi,Grant/Award Number:2024RS‐CXTD‐57;Innovation Foundation for Doctor's Dissertation of Northwestern Polytechnical University,Grant/Award Number:CX2023026;Undergraduate Innovation&Business Program in Northwestern Polytechnical University,Grant/Award Number:202310699253。

摘　　要：Fluorene-containing branched poly(aryl-ether-ketone)(BFPAEK)with terminal hydroxyl groups is synthesized by random copolycondensation reaction;then,the CF@BFPAEK/PEEK laminated composite is prepared by the“powder impregnation-high temperature compression molding”method with poly(ether-ether-ketone)(PEEK)as the matrix and BFPAEK-modified carbon fiber(CF@BFPAEK)as the reinforcement.When the content of branched units in BFPAEK is 10%and the coating amount of BFPAEK on the carbon fiber(CF)surface is 3 wt%,the CF@BFPAEK/PEEK laminated composite has outstanding mechanical properties,with an interlaminar shear strength(ILSS)of 57.3 MPa and flexural strength of 589.4 MPa,which are 80.2%and 44.3%higher than those of the pure CF/PEEK laminated composite(31.8 and 408.4 MPa),respectively.After 288 h of hydrothermal aging and high/low-temperature alternating aging,the corresponding retention rate of ILSS and flexural strength are respectively 87.9%and 84.7%,higher than those of pure CF/PEEK laminated composites(74.5%and 70.4%).The thermal conductivity coefficient and temperature for 5%weight loss of CF@BFPAEK/PEEK laminated composite are 1.85 W m^(−1)K^(−1)and 538.0℃,respectively.

关 键 词：carbon fiber fluorene-containing branched poly(aryl-ether-ketone) laminated composites poly(ether-ether-ketone) 

分 类 号：TB3[一般工业技术—材料科学与工程]