摘要
研究了用于真空辅助树脂传递模塑(VARTM)工艺的低温固化双酚F环氧树脂体系的化学流变特性,根据对等温黏度曲线的分析,建立了其工程黏度模型,并通过积分变换将模型推广到非恒温条件下使用。模型与实验结果具有良好的一致性。该体系固化产物玻璃化温度达111.9℃,拉伸强度78.5 MPa,弯曲强度106 MPa。所建立的模型可有效地预测VARTM工艺的黏度变化和工艺窗口,为复合材料成型工艺模拟分析及工艺参数的确定奠定了基础。
The chemo rheological behavior of low temperature curing bisphenol F epoxy resin for vacuum assisted resin transfer molding was studied by means of viscosity experiments. An engineering viscosity model was established and used to simulate the rheological behavior of the epoxy resin system. The estimated viscosity values of the established model are in good agreement with the experimental ones. The glass transition temperature, tensile strength and bending strength of the epoxy resin reach 111. 9°C, 78. 5 MPa and 106 MPa, respectively. The engineering model can be used to predict the processing windows of different processing parameters of VARTM process, which is critical for the simulation and optimization of composite manufacturing processes.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2009年第2期85-89,共5页
Acta Materiae Compositae Sinica
作者简介
谢凯，教授，博导，主要研究方向为光电功能材料及能源材料.E-mail：xie-kai@hotmail．com
