单聚合物复合材料调性成型机理及其关键技术研究

项目名称： 单聚合物复合材料调性成型机理及其关键技术研究

项目编号： No.51475071

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 机械、仪表工业

项目作者： 姜开宇

作者单位： 大连理工大学

项目金额： 83万元

中文摘要： 本研究针对单聚合物复合材料在成型以及性能调控方面所面临的问题，提出模内自增强复合成型单聚合物复合材料制备新方法，可以实现在不改变制件结构尺寸及材料成分的前提下能够通过成型参数的调整对单聚合物复合材料力学性能进行调整和控制。并采用先进的物理可视化技术，在线实时观测成型过程中聚合物熔体的流动轨迹、流动前沿形状变化、速度场、温度场、压力场、相态变化等成型过程特性，并对其进行参数化表征，结合流变分析、聚合物微观组织结构以及力学性能分析的理论及方法，系统研究单聚合物复合材料成型条件-流变特性-微观组织结构-最终力学性能之间各个环节的相互作用关系和作用机理，分析影响单聚合物复合材料力学性能的作用规律和内在因素，以此为基础，建立能够合理表征成型过程参数与单聚合物复合材料性能关系的模型，为单聚合物复合材料的制备、材料性能的设计以及模具结构与工艺的优化提供可靠的依据。

中文关键词： 成形机理；微观组织；微成形；工艺优化

英文摘要： In this study, with the problem of simply polymer material in its development and application, a new method named self-reinforced composite molding, is proposed to make single polymer material. Mechanical properties of composite materials could be controled with this method by changing molding parameters. Besides, by means of the visualization technology in this method, it could get the whole filling and contraction process of self-reinforced polymer in the special mold by high speed camera shooting. By adding trace particles and thermal tinting dyes to polymer materials, melts flow traces, shape changing of melts front flow, velocity and temperature field, pressure and phase change are real-time obtained with the help of infrared temperature sensors, pressure sensors and ultrasonic probes in mold. Combining with the theories on rheological, polymer microscopic structure and mechanical properties, the acting law and mechanism of molding parameters on single polymer mechanical properties can be studied. On this basis, the model can be built, which reasonably represents the relationship between molding parameters and single polymer composite mechanical properties. This could provide a reliable basis for the preparation of single polymer composites, the design of material properties and the optimization of forming process.

英文关键词： molding mechanism;microstructure;micro molding;process optimization