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FPC課題組第63篇論文發(fā)表在Composites Science and Technology上

  連續(xù)纖維增強(qiáng)熱塑性聚合物復(fù)合材料(CFRTPCs)具有輕質(zhì),優(yōu)良的耐藥品、耐輻射和電氣性能,生產(chǎn)周期短、生產(chǎn)效率高,可重復(fù)或二次加工及易修補(bǔ)等,克服了熱固性聚合物復(fù)合材料韌性差、斷裂延伸率低,易發(fā)生早期應(yīng)力開(kāi)裂的缺點(diǎn);也彌補(bǔ)了短纖維和中長(zhǎng)纖維增強(qiáng)熱塑性聚合物復(fù)合材料承載力不高的缺點(diǎn),廣泛應(yīng)用在航天、航空、汽車、化工、電子和電器等諸多領(lǐng)域,且發(fā)展速度快,未來(lái)市場(chǎng)樂(lè)觀(CFRTPCs在2018-2121年間預(yù)計(jì)將保持4.38%的增長(zhǎng))。

  目前CFRTPCs制造主要集中在歐洲和美國(guó)。2015年歐、美產(chǎn)量分別為31536噸和27516噸,總?cè)蚴袌?chǎng)總額的62.30%。中國(guó)2011-2015年的生產(chǎn)增長(zhǎng)率最高達(dá)11.42%。盡管中國(guó)存在巨大的市場(chǎng)增長(zhǎng)空間,且數(shù)家公司、高校和研究所也在不遺余力地從事CFRTPCs的研制和生產(chǎn),但在技術(shù)和產(chǎn)品性能方面,與國(guó)外領(lǐng)先制造商(如Lanxess,Polystrand等)相比,仍具有明顯的差距。

  FPC課題組前期和吉林大學(xué)教育部特種工程塑料工程研究中心姜振華、張?jiān)弃Q教授合作,設(shè)計(jì)開(kāi)發(fā)了一系列不同耐熱等級(jí)的高流動(dòng)性PEEK樹(shù)脂及其共聚物,并基于簡(jiǎn)單的溶液浸膠、高溫模壓制備出CCFs/PEP-PEEKs層壓復(fù)合材料,相關(guān)研究成果發(fā)表在Composites Science and Technology(2018,165: 148-153)上,為制備大批量、高性能CFRTPCs提供了一種簡(jiǎn)單、可行的設(shè)計(jì)、制備方法。

Yunhe Zhang, Wei Tao, Yu Zhang, Lin Tang, Junwei Gu* and Zhenhua Jiang*. Continuous carbon fiber/crosslinkable poly(ether ether ketone) laminated composites with outstanding mechanical properties, robust solvent resistance and excellent thermal stability. Composites Science and Technology, 2018, 165: 148-153. 2017IF=5.160. (1區(qū)/Top期刊:復(fù)合材料領(lǐng)域頂尖期刊)

Abstract

  Continuous carbon fiber (CCF) reinforced polymeric composites have attracted significant attention in the aeronautic and automobile industries. In this study, novel CCF/poly(ether ether ketone) (PEEK) composites with robust solvent resistance, excellent thermal stability and outstanding mechanical properties were successfully fabricated via a facile solution impregnation process, mainly ascribed to the introduction of the crosslinkable phenylethynyl pendant to PEEK (PEP-PEEK) with excellent solubility. After the crosslinking reaction, PEP-PEEK presented robust solvent resistance, good thermal stability, and high mechanical properties. The longitudinal tensile strength of the CCF/PEP-PEEK composites significantly improved to 1610 MPa, which was 19 times stronger than the longitudinal tensile strength of PEP-PEEK. In the meantime, the CCF/PEP-PEEK composites also had a higher long-term operating temperature, excellent thermal stability and high heat distortion temperature. This study was performed as part of a larger effort to provide a simple and feasible method for the preparation of high quality continuous fiber reinforced poly(ether ether ketone) composites.