A Degradable Epoxy Resin Enabled by Acetal and Its Application in Carbon Fiber Reinforced Composites
In this study,an acetal-containing epoxy resin(CVP)was designed and synthesized from 3-cyclohexene-l-metha-nol and 1,4-cyclohexanedimethanol divinyl ether.The chemical structure of CVP was characterized by Fourier-transform in-frared spectroscopy and 1H NMR and 13C NMR.The prepared CVP was cured by methylhexahydrophthalic anhydride.The re-sults of dynamic mechanical analysis(DMA)show that the cured CVP has a glass transition temperature of 119℃.Owing to the incorporation of acetal bond,the cured CVP resin is degradable in various acid solutions.Finally,the CVP/anhydride system was used as epoxy matrix to fabricate carbon fiber reinforced composite(CFRC).The tensile strength and modulus of obtained CFRC can reach 678 MPa and 17.4 GPa,respectively.The results of scanning electron microscope(SEM)observa-tions indicate nondestructive carbon fibers can be recovered from CFRC by degrading the matrix resin in the acid solution.
Epoxy resins Carbon fiber reinforced composites Degradability Acetal
KANG Junyi ZHU Siyao LIU Wanshuang
Center for Civil Aviation Composites,Donghua University,Shanghai 201620,China;College of Textiles,Donghua University,Shanghai 201620,China
国际会议
2021 Sino-Africa International Symposium on Textiles and Apparel (SAISTA2021)(2021中非纺织服装国际论坛)
线上
英文
58-63
2021-11-05（万方平台首次上网日期，不代表论文的发表时间）