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为解决预浸带缠绕过程中手工搭接效率低的问题,针对原有缠绕设备,设计了一套预浸带自动快速热压接系统。首先分析了预浸带搭接面张力的重要性,并结合基体树脂的粘流特性,从热力学、动力学角度分析了影响搭接界面层搭接性能的主要因素,通过物理实验,分析了时间、温度及搭接长度对预浸带拉伸剪切强度的影响机制。据此,获得适于热压接系统的工艺参数;并对比手工缝接实验,说明该方案的优越性,对复合材料的自动化成型技术具有一定的指导意义。
In order to solve the problem of low manual lap bonding efficiency during prepreg tape winding process, a set of prepreg tape automatic rapid thermocompression bonding system was designed for the original winding equipment. Firstly, the importance of lap tension in prepreg tape was analyzed. Based on the viscous flow characteristics of matrix resin, the main factors affecting the lap interface property of lap interface were analyzed from thermodynamics and kinetics. Through physical experiments, the time , Temperature and lap length of the prepreg tensile shear strength of the mechanism. Therefore, the process parameters suitable for the thermocompression bonding system were obtained. Compared with the manual sewing experiment, the superiority of the scheme was demonstrated, which is of guiding significance to the automatic forming technology of composite materials.