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Preparation of Carbon Nanotube/Bismaleimide Composite Film by In-situ Prepreg Process

Authors： LIN Jia Hao, ZHAN Hang, WANG Jian Nong

Units： School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237

KeyWords： Carbon nanotube; Resin; In-situ prepreg; Composite film; Mechanical property

ClassificationCode：TB332

year,volume(issue):pagination： 2021,41(2):25-32

Abstract：

Carbon nanotube (CNT) shows advantages such as high strength, high modulus and light weight, which can be potentially applied in the aerospace, electronics and other fields. Resin has the characteristics of mature technology, large output and low cost. Therefore, it is necessary to combine the two to prepare composites. In this paper, an in-situ prepreg process was used to prepare CNT/bismaleimide (BMI) composite films. The CNT assembly was grown by the high-temperature catalytic spray pyrolysis method and combined with a resin solution in situ on the winding drum to obtain the prepreg composite. Subsequent operations such as multi-layer stacking, solvent removal, and hot-press curing were performed to prepare a CNT/BMI composite film. The influences of the orientation and mass fraction of CNTs on the mechanical properties of the composite film were studied. Characterization was carried out using polarized Raman spectroscopy, SEM, and TGA. Finally, when the mass fraction of CNTs was 59.8%, the composite film achieved a tensile strength of 1.02 GPa, elongation at break of 8.59%, and toughness of 48.9 J/cm3.

Funds：

国家自然科学基金（U1362104）

AuthorIntro：

林家豪（1995-），男，江苏无锡人，硕士研究生，研究方向：碳纳米管材料，E-mail：linjiahao@mail.ecust.edu.cn

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