Microstructure and mechanical properties of MAH-GO/MBMI-E51 composites

CHEN Yufei; ZHAO Hui; TENG Chengjun

doi:10.13801/j.cnki.fhclxb.20210419.002

Volume 39 Issue 2

Feb. 2022

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CHEN Yufei, ZHAO Hui, TENG Chengjun. Microstructure and mechanical properties of MAH-GO/MBMI-E51 composites[J]. Acta Materiae Compositae Sinica, 2022, 39(2): 601-607. doi: 10.13801/j.cnki.fhclxb.20210419.002

Citation:

CHEN Yufei, ZHAO Hui, TENG Chengjun. Microstructure and mechanical properties of MAH-GO/MBMI-E51 composites[J]. Acta Materiae Compositae Sinica, 2022, 39(2): 601-607. doi: 10.13801/j.cnki.fhclxb.20210419.002

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Microstructure and mechanical properties of MAH-GO/MBMI-E51 composites

doi: 10.13801/j.cnki.fhclxb.20210419.002

CHEN Yufei^{1, 2
,
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ZHAO Hui^1
,,
TENG Chengjun³

1.
The 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
3.
Harbin Xiangfang District Center for Disease Control and Prevention, Harbin 150030, China

Received Date: 2021-02-22
Accepted Date: 2021-04-11
Rev Recd Date: 2021-03-18

Available Online: 2021-04-20

Publish Date: 2022-02-01

Abstract

Abstract

Graphene oxide (GO) was prepared by improved Hummers method with few layers of graphene as the raw material and then grafted with maleic anhydride (MAH) to obtain MAH-GO. The MAH-GO/MBMI-E51 compo-sites were prepared with in-situ polymerization using 4,4′-diaminodiphenylmethane bismaleimide resin and bisphenol A epoxy resin (MBMI-E51) as matrix, 4′4-diaminodiphenylmethane (DDM) as the curing agent and MAH-GO as the reinforcement. The microstructure of MAH-GO was characterized and the effect of the reinforcement on the mechanical properties of composite were studied. The results show that the MAH is successfully grafted on the surface of GO through chemical bonds by FTIR and XRD, with clear lamellar structure and curls on the surface. The grafting rate is about 7.26% with chemical titration method. The microstructure of the composites indicates that the fracture morphology of the composite material has changed from straight “river-like” to “dendritic” and then to dense “dimple”, with the addition of the reinforcement. The fracture mode has realized the transition from brittle fracture to ductile fracture. The impact strength, flexural strength and flexural modulus of the composites are 24.18 kJ/m², 209 MPa and 14.15 GPa, which are 200%, 81.7% and 524% higher than those of resin matrix, when the content of MAH-GO is 1.25wt%. The mechanical properties of the composites are greatly improved.
- bisphenol A epoxy resin,
- bismaleimide,
- maleic anhydride,
- graphene oxide,
- microstructure,
- mechanical properties
Long Abstrsct
Innovation Points

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References(21)

References

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