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摘要: 在树脂基复合材料的成型工艺中大多涉及到树脂的流动过程, 而树脂压力是反映这一过程的重要参数, 监测成型过程中树脂压力的变化可以为工艺参数的选择和构件质量的控制提供指导。本文中针对热压工艺, 根据液体传压原理和特点, 自行研制了复合材料成型过程树脂压力测试系统, 对系统的精度和动态响应性能进行了研究, 并以该系统为测试手段, 初步研究了玻璃纤维单向层板中树脂压力的变化规律。结果表明, 该系统具有准确度高和动态响应敏感的特点, 满足热压成型过程树脂压力的测试要求, 为研究工艺过程树脂流动行为提供了有力的测试与验证手段。Abstract: In some processes of resin matrix composites, such as a hot pressing process and RTM, the resin flow is an important phenomenon which can be detected by resin pressure. Monitoring resin pressure can obtain a lot of significant information for the optimization of the processing parameters and the control of the quality of composite parts. In this paper, a resin pressure measuring system for hot pressing processes was established based on the principle of pressure transfer in liquid. The variation of resin pressure in the process of unidirectional glass fiber laminates was investigated. By using the measuring system, the results show that the accuracy and the dynamic respondence of the system can meet the requirements of resin pressure testing in hot pressing processes, which is valuable for the study of the resin flow behavior in the processing.
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Keywords:
- composites /
- hot pressing process /
- resin flow /
- pressure testing
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