双层簧片分析法—研究复合材料固化的一种新方法

THE TWO-LAYERED REED ANALYSIS METHOD FOR STUDING THE CURING OF FRP

摘要: 将FRP预浸料和钢片载体制成双层簧片试样,用振簧仪进行动态力学分析(DMA),从而监测、研究FRP的固化。这种双层簧片分析法对于探讨固化历程、确定固化温度及时间等工艺条件都十分简便,它还是筛选耐热性FRP配方、检验不同存放期予浸料铺敷性的有用手段。它除具备TBA、DSA等动态技术的优点外,最大的特点是可以直接研究处在不同存放期的各种预浸料。此外,本方法所需仪器比TBA、DSA试验装置简单,制备试样方便,因而更容易推广。

Abstract: The curing process of FRP prepreg could be readily tested by means of the two-layered reed analysis method (TRA),in which a strip of FRP prepreg was bonded to a thin steel and its DMA was tested with a vibrating, reed instrument.The TRA proved to be a simple and useful technique for studyiug the curing processes of FRP,selecting the recipes of heat resistant resin systems,determining the required curing temperature and time,and checking the drapability of prepreg with different storage lives.