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为满足复合材料自动铺缠成型过程中预浸带换料续接对效率及可靠性的要求,首先,根据流变学原理及Gutowski铺放贴合分析方法建立了热压接模型;然后,应用幂律模型建立了树脂流体在平行板挤压下的控制方程;最后,分析了静态续接状态和动态续接状态下续接强度与续接压力、树脂黏度、续接温度、续接时间(或续接速度)和续接长度的关系,并设计了静态和动态热压接机构。结果表明:随续接压力、续接温度、续接时间和续接长度的提升,预浸带的续接强度提高。所得结论可帮助设计满足快速、稳定及可靠等要求的续接机构,为预浸带快速热压接系统的开发奠定了理论与设计基础。
In order to meet the requirements of efficiency and reliability of prepreg tape renewal during automatic lay-up of composite materials, a hot-press model was first established according to rheological theory and Gutowski lay-fit method. Then, The governing equations of the resin fluid under the parallel plate extrusion are established based on the power-law model. Finally, the relationship between continuation strength and continuation pressure, resin viscosity, continuation temperature and continuation time Or continued speed) and continued the relationship between the length, and the design of static and dynamic thermal compression mechanism. The results show that the bonding strength of prepreg tape increases with the increase of pressure, continuation temperature, continuation time and continuation length. The conclusions can help to design a continuation mechanism that meets the requirements of fastness, stability and reliability, laying a theoretical and design foundation for the development of prepreg tape rapid thermal compression bonding system.