Effect of Curing Process on Tensile and Flexural Properties of 3D Woven Structural Polymer Composites 


Vol. 24,  No. 8, pp. 2835-2848, Aug.  2023
10.1007/s12221-023-00259-9


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  Abstract

The unstable meso-structure of preform affects the mechanical properties of 3D angle-interlock woven composites, which restricts the application in load-bearing component. To enhance the elastic properties of composites, the modified curing processes were proposed to improve the structural stability of preform. Two typical methods of the modified curing processes were described in this research, and three typical composite samples were manufactured. The influence of different curing processes on meso-structural characteristic and mechanical properties of composites was investigated. Then, the quasi-static tensile and three-point bending tests were carried out, and the load–deflection curves and stress–strain curves were obtained. The failure modes and damage mechanisms of three typical composite samples were analyzed. The results showed that the modified curing process improved the structural consistency of preform, and the straightness of load-bearing yarns increased. The elastic modulus of samples was increased by about 20% ~ 35% with the modified curing process, which effectively reduced the variation coefficient of the strength and modulus. The modified curing process reduced the crimp percentage of load-bearing yarns, which increased the bonding strength between fibers and epoxy. The load-bearing carbon fibers were completely used in composites, and the results could broaden the application of composites in structural components.

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  Cite this article

[IEEE Style]

Z. Ma, R. Man, D. Yin, L. Cheng, W. Ma, C. Jia, "Effect of Curing Process on Tensile and Flexural Properties of 3D Woven Structural Polymer Composites," Fibers and Polymers, vol. 24, no. 8, pp. 2835-2848, 2023. DOI: 10.1007/s12221-023-00259-9.

[ACM Style]

Zhenyu Ma, Ruidong Man, Dongdong Yin, Li Cheng, Wensuo Ma, and Chenhui Jia. 2023. Effect of Curing Process on Tensile and Flexural Properties of 3D Woven Structural Polymer Composites. Fibers and Polymers, 24, 8, (2023), 2835-2848. DOI: 10.1007/s12221-023-00259-9.

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