Research on Influence of Matrix Component on the Mechanical Behavior of Multiaxial Warp-knitted Composites 


Vol. 23,  No. 11, pp. 3126-3137, Nov.  2022
10.1007/s12221-022-0298-9


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  Abstract

The mass ratio of curing agent to epoxy resin is one of the important factors affecting the behavior of matrix and composites. In this paper, the solution of curing agent to epoxy resin with different mass ratio (0.25, 0.30, 0.35 and 0.40) was selected as matrix, quadriaxial warp-knitted fabric was selected as reinforcement, and the composites were manufactured by applying vacuum assisted film infusion. Then the tensile and bending behavior of the composites was experimentally investigated, and the curing degree and failure mechanism of the composites were analyzed with respect to the thermodynamic properties and the microscopic failure morphologies. The optimal mass ratio was obtained by applying nonlinear fitting and verified by experiment, and a mathematical model was derived to predict the relationship between the strength and the mass ratio. The results showed that the thermal stability, curing degree, tensile and bending strength of the specimens increase firstly and then decrease with increase of the mass ratio. According to the tensile and bending strength results, the optimum mass ratio were obtained as 0.31 and 0.33 by applying nonlinear fitting to the experiment data. The results could lay a theoretical foundation for optimizing the mass ratio of matrix components, and improve the strength of composites.

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  Cite this article

[IEEE Style]

J. Chen, X. Gao, K. Zhao, W. Wu, "Research on Influence of Matrix Component on the Mechanical Behavior of Multiaxial Warp-knitted Composites," Fibers and Polymers, vol. 23, no. 11, pp. 3126-3137, 2022. DOI: 10.1007/s12221-022-0298-9.

[ACM Style]

Jiawei Chen, Xiaoping Gao, Ke Zhao, and Wei Wu. 2022. Research on Influence of Matrix Component on the Mechanical Behavior of Multiaxial Warp-knitted Composites. Fibers and Polymers, 23, 11, (2022), 3126-3137. DOI: 10.1007/s12221-022-0298-9.

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