树脂基复合材料固化过程的超声波在线监测研究进展

Progress in Cure Monitoring of Resin Matrix Composites via Ultrasonics

热固性聚合物复合材料的固化过程是化学交联和物理凝固共同作用的结果。与传统的红外光谱、介电分析法、差示扫描量热法、动态力学热分析和流变测试等离线分析方法相比,超声波在线监测法能够合理预测体系固化过程中的力学行为参数,实现对复合材料固化行为的实时反馈及完整表述。文中介绍了超声波在线监测技术的测试原理,综述了国内外采用超声波在线监测法研究纯树脂及其复合材料体系力学状态转变过程和固化动力学的进展。

The curing process of thermal-setting composites is the synergistic results of the chemical crosslinking and physical solidification. Compared with the traditional off-line analyses,such as IR,dielectric analysis,DSC,DMA and rheology test,ultrasonics on-line monitoring technology is able to predict the mechanical behavior parameters of composites during the curing process. And the integrity and continuity test by ultrasonics can achieve real-time signal feedback and complete statements of the composites curing behavior. This paper introduced the principle of cure monitoring test of resin matrix composites via ultrasonics. The progress in research of mechanical state transition process and the curing kinetics of the pure resin and its composites system with ultrasonics on-line monitoring technology were reviewed.