一种预测反应性树脂体系黏度随时间变化关系的新方法  

A new method for predicting the viscosity of reactive resin systems

作　　者：代晓青[1] 曾竟成[1] 肖加余[1] 江大志[1] 尹昌平[1] 

机构地区：[1]国防科技大学航天与材料工程学院,长沙410073

出　　处：《复合材料学报》2010年第3期78-85,共8页Acta Materiae Compositae Sinica

摘　　要：为了预测在固化度、温度和固化放热共同作用下,树脂体系的黏度随时间的变化,提出了一种确定反应性树脂体系黏度随时间变化关系的新方法。该方法从等温黏度-时间曲线和固化度-时间曲线出发,分别得到黏度-固化度关系和黏度-温度关系,从而将影响反应性流体黏度变化的两个主要因素温度和固化程度分离开来。基于反应性树脂体系的局部绝热假设,将反应性树脂体系的固化放热引入到黏度变化关系中,得到反应性树脂体系黏度在固化度、温度和固化放热共同作用下的黏度-时间关系。黏度预测值与用旋转黏度计测量值的黏度变化趋势具有高度的一致性,可以应用此方法实现对实际环境中考虑固化反应热效应的反应性树脂体系黏度的预测。A new method is developed for building a relationship among the viscosity,temperature,curing degree and time to predict the viscosity of the reactive resin system which is affected by the cure degree,temperature and ejective heat of the cure reaction.This method,starting with isothermal viscosity-time curves and isothermal curing degree-time curves,and separates of the curing degree and the temperature effect in the real environment,which were two main factors affecting the reactive resin viscosity.Based on the assumption that the reactive resin system is a partial adiabatic system,the viscosity-time relationship of a reactive resin system under the combined influences of curing degree,temperature and ejective heat of the cure reaction was rebuilt.The viscosity prediction has the high consistency with the test values using the rolling viscometer.The new method can be used to predict the viscosity of the reactive resin system in considering the ejective heat of the cure reaction.

关 键 词：反应性树脂体系 黏度预测 固化度 温度 固化放热 

分 类 号：TQ323.42[化学工程—合成树脂塑料工业]