Simulation and optimization based on RTM-prepreg process

doi:10.19936/j.cnki.2096-8000.20260128.012

Abstract

Abstract: The unsynchronized curing of prepreg and resin at the interface of RTM-prepreg process results in an obvious curing gradient, which reduces the mechanical properties of the interface. However, there are few studies on the co-curing process simulation and co-curing process curve. In this study, the mathematical models of the curing kinetics of epoxy resin and carbon fiber/epoxy resin prepreg were established, and the co-curing process was simulated by user-defined subroutine of ABAQUS software. The parameters of temperature profile such as heating rate, holding time, and holding temperature were optimized to simultaneous curing of the two materials at the interface. Finally, the reliability of the simulation results was verified by short beam shear experiments and double cantilever beam experiments. The results show that the two materials at the interface have exothermic coupling, but have little effect on the resin curing of the interface materials. The short beam shear strength and mode Ⅰ interlaminar fracture toughness of the interface of the laminate are better than those of the prepreg layer under different curing curve. When the temperature profile is about 5 ℃/min, the temperature is raised to 180 ℃ and kept for 2 hours, the mechanical properties of laminates are better than those of other curing curve. It has certain guiding significance for actual production.

Key words: RTM-prepreg process , co-curing, simulation, optimized, experimental validation

CLC Number:

TB332

CHEN Jie, XIE Jinxin, PENG Fei, ZHANG Fengjia, XU Linpeng, ZHOU-HE Lezi, ZHOU Huamin. Simulation and optimization based on RTM-prepreg process[J]. COMPOSITES SCIENCE AND ENGINEERING, 2026, 0(1): 82-91.

References

[1] ZHANG J, LIN G, VAIDYA U, et al. Past, present and future prospective of global carbon fibre composite developments and applications[J]. Composites Part B: Engineering, 2023, 250: 110463.
[2] 罗维, 郭强, 赵文琛, 等. 复合材料纵横加筋隔框RTM成型工艺[J]. 宇航材料工艺, 2021, 51(6): 44-48.
[3] AOKI Y, ISHIKAWA T, TAKEDA S I, et al. Fatigue test of lightweight composite wing structure[J]. International Journal of Fatigue, 2006, 28(10): 1109-1115.
[4] 李伟东, 温小雪, 马征峥, 等. 基于预浸料-树脂传递模塑成型工艺的复合材料纵横加筋舱段一体化制备与验证[J]. 复合材料学报, 2023, 40(5): 2628-2638.
[5] 肖遥, 李东升, 吉康, 等. 大型复合材料航空件固化成型模具技术研究与应用进展[J]. 复合材料学报, 2022, 39(3): 907-925.
[6] AKIN M, OZTAN C, AKIN R, et al. Co-cured manufacturing of multi-cell composite box beam using vacuum assisted resin transfer molding[J]. Journal of Composite Materials, 2021, 55(30): 4469-4480.
[7] KAPS R W, HERBECK L, HERRMANN A P. Hybrid fabrication route-Cost efficient CFRP primary airframe structures[C]//International Conference on Autonomic and Autonomous Systems. 2006.
[8] XU W W, GU Y Z, LI M, et al. Co-curing process combining resin film infusion with prepreg and co-cured interlaminar properties of carbon fiber composites[J]. Journal of Composite Materials, 2014, 48: 1709-1724.
[9] 郑亚萍, 陈伟, 李江红, 等. RTM 和预浸料共固化树脂体系界面层特性[J]. 复合材料学报, 2013, 30(3): 35-38.
[10] MA X Q, GU Y Z, LI Y X, et al. Interlaminar properties of carbon fiber composite laminates with resin transfer molding/prepreg co-curing process[J]. Journal of Reinforced Plastics and Composites, 2014, 33(24): 2228-2241.
[11] MA X Q, GU Y Z, LI M, et al. Investigation of carbon fiber composite stiffened skin with vacuum assisted resin infusion/prepreg co-curing process[J]. Science China Technological Sciences, 2014, 57: 1956-1966.
[12] 王炯, 李敏, 顾轶卓, 等.炭纤维复合材料共固化液体成型工艺及层间性能研究[J]. 材料工程, 2013, 357(2): 93-98.
[13] WANG X X, JIA Y X, CHENG C, et al. Numerical analysis of curing reaction and demoulding deformation in resin transfer moulding processes[J]. Polymeric Materials Science and Engineering, 2010, 26(9): 151-154.
[14] 何靓, 朱攀星, 俆小伟, 等. 复合材料残余应力与固化变形机理及控制研究进展[J]. 复合材料科学与工程, 2022(7): 121-128.
[15] 王晓霞, 贾玉玺, 董抒华. 基于Morris方法的纤维复合材料结构件固化均匀性的全局灵敏度分析[J]. 复合材料学报, 2015, 32(4): 1211-1217.
[16] 贺继林, 王特, 潘若阳, 等. 基于因次分析方法的树脂基复合材料等温固化均匀性分析[J]. 复合材料学报, 2016, 33(1): 71-76.
[17] 王俊敏, 郑志镇, 陈荣创, 等. 树脂基复合材料固化过程固化度场和温度场的均匀性优化[J]. 工程塑料应用, 2015, 43(4): 55-61.
[18] OLIVIER P, COTTU J P. Optimisation of the co-curing of two different composites with the aim of minimising residual curing stress levels[J]. Composites Science and Technology, 1998, 58(5): 645-651.
[19] 李冬娜. 树脂基复合材料固化行为的多尺度模拟研究[D]. 兰州: 兰州理工大学, 2018.
[20] 李小阳, 康峻铭, 朱子钊, 等. 环氧树脂灌封结构固化行为数值模拟和工艺优化[J]. 复合材料学报, 2021, 38(9): 2907-2917.
[21] 范保鑫. 基于 UMATHT 的碳纤维环氧树脂层合板三维热响应研究[D]. 天津: 中国民航大学, 2020.
[22] 赵烽, 李梦, 赵欣. 玻璃纤维增强环氧大豆油丙烯酸酯树脂基复合材料含浸压力固化过程的数值模拟[J]. 高分子材料科学与工程, 2022, 38(10): 110-116.
[23] SPRINGER G S, TSAI S W. Thermal conductivities of unidirectional materials[J]. Journal of Composite Materials, 1967, 1(2): 166-173.
[24] VAFAYAN M, BEHESHTY M H, GHOREISHY M H, et al. The prediction capability of the kinetic models extracted from isothermal data in non-isothermal conditions for an epoxy prepreg[J]. Journal of Composite Materials, 2014, 48: 1039-1048.
[25] 张文韬, 夏池, 黄志高, 等. VARTM用环氧树脂固化动力学行为及力学性能分析[J]. 塑料, 2022, 51(1): 78-83.
[26] ZHANG W C, XU Y J, HUI X Y, et al. A multi-dwell temperature profile design for the cure of thick CFRP composite laminates[J]. The International Journal of Advanced Manufacturing Technology, 2021, 117: 1133-1146.