Microstructure and mechanical properties of bismaleimide composite modified by graphene oxide grafting with maleic anhydride

CHEN Yufei; TIAN Qiyuan; DONG Lei; LIU Zhenda; LV Sicheng; ZHU Li; NIE Peng

doi:10.13801/j.cnki.fhclxb.20200605.001

Volume 38 Issue 1

Jan. 2021

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CHEN Yufei, TIAN Qiyuan, DONG Lei, et al. Microstructure and mechanical properties of bismaleimide composite modified by graphene oxide grafting with maleic anhydride[J]. Acta Materiae Compositae Sinica, 2021, 38(1): 137-144. doi: 10.13801/j.cnki.fhclxb.20200605.001

Citation:

CHEN Yufei, TIAN Qiyuan, DONG Lei, et al. Microstructure and mechanical properties of bismaleimide composite modified by graphene oxide grafting with maleic anhydride[J]. Acta Materiae Compositae Sinica, 2021, 38(1): 137-144. doi: 10.13801/j.cnki.fhclxb.20200605.001

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Microstructure and mechanical properties of bismaleimide composite modified by graphene oxide grafting with maleic anhydride

doi: 10.13801/j.cnki.fhclxb.20200605.001

1.
College of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China
2.
Key Laboratory of Engineering Dielectrics and its Application, Ministry of Education, Harbin University of Science and Technology, Harbin 150080, China

Received Date: 2020-03-23
Accepted Date: 2020-05-25

Available Online: 2020-06-05

Publish Date: 2021-01-15

Abstract

Abstract

Graphene oxide (GO) was prepared by improved Hummers method and to obtain maleic anhydride (MAH)-GO by graft modification with MAH. 4,4’-diamino diphenyl methane bismaleimide (MBMI) resin as the reactive monomer, diallyl bisphenol A (BBA) and bisphenol A bisallyl ether (BBE) as reactive diluents, MBMI-BBA-BBE (MBAE) resin matrix was synthesized. The MAH-GO/MBAE composites were prepared by in-situ polymerization, the microstructure of MAH-GO was characterized and the effect of the reinforcement on mechanical properties of the MAH-GO/MBAE composites was studied. The results show that MAH is successfully grafted on the surface of GO, with clear lamellar structure and folds on the surface, and the graft rate is determined by chemical titration to be about 11.32%. The micromorphology of MAH-GO/MBAE composites shows that the fracture cracks are irregularly divergent and are typical ductile fracture, when MAH-GO is an appropriate amount and uniformly dispersed in the matrix resin. The impact strength and the bending strength of the MAH-GO/MBAE composite are 15.88 kJ/m² and 142.13 MPa, which are 67.68% and 43.61% higher than that of the matrix resin, respectively, when the content of MAH-GO is 0.5wt%. The mechanical properties have been improved obviously.
- bismaleimide,
- graphene oxide,
- maleic anhydride,
- microstructure,
- mechanical properties
Long Abstrsct
Innovation Points

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References(22)

References

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