Zanjani Jamal Seyyed Monfared, Baran Ismet
Faculty of Engineering Technology, University of Twente, 7500AE Enschede, The Netherlands.
Materials (Basel). 2021 Jan 8;14(2):291. doi: 10.3390/ma14020291.
Co-bonding is an effective joining method for fiber-reinforced composites in which a prefabricated part bonds with a thermoset resin during the curing process. Manufacturing of co-bonded thermoset-thermoplastic hybrid composites is a challenging task due to the complexities of the interdiffusion of reactive thermoset resin and thermoplastic polymer at the interface between two plies. Herein, the interphase properties of co-bonded acrylonitrile butadiene styrene thermoplastic to unsaturated polyester thermoset are investigated for different processing conditions. The effect of processing temperature on the cure kinetics and interdiffusion kinetics are studied experimentally. The interphase thickness and microstructure are linked to the chemo-rheological properties of the materials. The interdiffusion mechanisms are explored and models are developed to predict the interphase thickness and microstructure for various process conditions. The temperature-dependent diffusivities were estimated by incorporating an inverse diffusion model. The mechanical response of interphases was analyzed by the Vickers microhardness test and was correlated to the processing condition and microstructure. It was observed that processing temperature has significant effect on the interdiffusion process and, consequently, on the interphase thickness, its microstructure and mechanical performance.
共粘结是一种用于纤维增强复合材料的有效连接方法，其中预制部件在固化过程中与热固性树脂粘结。由于反应性热固性树脂和热塑性聚合物在两层之间的界面处相互扩散的复杂性，共粘结热固性-热塑性混杂复合材料的制造是一项具有挑战性的任务。在此，针对不同的加工条件，研究了共粘结丙烯腈-丁二烯-苯乙烯热塑性塑料与不饱和聚酯热固性塑料的界面相性能。通过实验研究了加工温度对固化动力学和相互扩散动力学的影响。界面相厚度和微观结构与材料的化学流变性能相关联。探索了相互扩散机制并建立了模型，以预测各种工艺条件下的界面相厚度和微观结构。通过引入逆扩散模型估计了温度依赖性扩散系数。通过维氏显微硬度测试分析了界面相的力学响应，并将其与加工条件和微观结构相关联。观察到加工温度对相互扩散过程有显著影响，进而对界面相厚度、其微观结构和力学性能有显著影响。
