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Improvement of adhesion of kevlar fabrics to epoxy by surface modification with acetic anhydride in supercritical carbon dioxide
Author(s) -
Haijuan Kong,
Hui Sun,
Jin Chai,
Haiquan Ding,
Xiaoma Ding,
Mengmeng Qiao,
Muhuo Yu,
Youfeng Zhang
Publication year - 2019
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.25100
Subject(s) - materials science , composite material , kevlar , epoxy , supercritical carbon dioxide , ultimate tensile strength , surface modification , adhesion , supercritical fluid , acetic anhydride , chemical engineering , organic chemistry , chemistry , engineering , catalysis
The effect of supercritical carbon dioxide (ScCO 2 ) treatment with acetic anhydride (AA) for Kevlar fabric on the interfacial adhesion and mechanical properties of Kevlar fabric/epoxy composites was investigated. ScCO 2 treatment with AA remarkably affects the interfacial adhesion, thus improving mechanical properties. The effects of treating time on the surface modification and mechanical properties of composites were studied. Results demonstrated that the optimal condition is 100°C at 10 MPa for 60 min, as shown by the tensile strength and shear strength of the ScCO 2 ‐treated composites being 21.3 and 47.9% higher than those of the untreated ones, respectively. The mechanical properties demonstrated that ScCO 2 treatment provides an efficient and environmentally safe method for surface modification to improve interfacial interaction between the treated fiber and matrix with ScCO 2 treatment. POLYM. COMPOS., 40:E920–E927, 2019. © 2018 Society of Plastics Engineers