热塑性复合材料原位成型过程铺层间结合强度

doi:10.7527/S1000-6893.2018.22543

Abstract

Abstract: The Automated Fiber Placement (AFP) of the continuous fiber reinforced thermoplastic composite could realize the in-situ consolidation and the in-situ consolidated laminate without being reconsolidated by the autoclave, belonging to a non-autoclave technology. The strength of the laminate made by in-situ consolidation is directly determined by the interlaminard bonding strength. The interlaminar intimate contact model and the molecular chain diffusion model are presented for predicting the relation between the interlaminar bonding strength and processing parameters, optimizing the in-situ consolidated processing parameters. Experiments were carried out to validate these results computed by the interlaminar intimate contact model and the molecular chain diffusion model. The experimental results are similar to the predicted results. When the pressure of roller reaches 1500 N, the degree of the interlaminar intimate could reach 1. The diffusion time of the molecular chain could be shortened by increasing the heating rate. The InterLaminar Shear Strength (ILSS) of the in-situ consolidated laminate is only about 70% of that consolidated by autoclave; therefore, it is necessary to analyze the other factors that influence the strength of the in-situ consolidated laminate.

Key words: thermoplastic composite, in-situ consolidation, intimate contact, molecular chain diffusion, bonding strength

CLC Number:

SONG Qinghua, LIU Weiping, LIU Xiaolin, LIU Kui, YANG Yang, CHEN Jiping. Interlaminar bonding strength for thermoplastic composite in an in-situ consolidation process[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2019, 40(4): 422543-422543.

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Interlaminar bonding strength for thermoplastic composite in an in-situ consolidation process

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