采用动态DSC法对耐高温双马来酰亚胺树脂的固化反应动力学进行研究,根据Kissinger方程和Crane方程,拟合得到树脂的固化动力学参数,并建立树脂的唯象模型.此外,采用恒温DSC法,根据DiBenedetto方程,建立树脂的玻璃化转变温度与固化度之间的函数关系.采用凝胶盘法,获得树脂在不同温度下的凝胶时间,建立凝胶时间和凝胶温度之间的函数关系,最终得到树脂的TTT图.结果表明:根据TTT图确定合适的加压时机,可以有效排除夹杂于预浸料层内层间的气体,从而制备内部质量完好的复合材料.
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