高性能环氧树脂绝缘件基本组分的粘度特性研究

Study on Viscosity Properties of High Performance Epoxy Resin Insulators

粘度(动力粘度)作为环氧树脂材料的重要工艺性能指标,与树脂的表面张力、流动性以及树脂与填料之间的浸润性存在紧密的关系,在具体的工业生产中是重要的参数之一。研究环氧树脂绝缘件基本组分的粘度随温度的变化规律对绝缘件成型工艺参数的设定具有重要的指导意义。为此,采用旋转粘度计测定3种环氧树脂体系各基本组分的粘度特性,并使用广泛运用于其他领域的Arrhenius方程和Licht W等提出的改进方程对测量得到的数据进行拟合分析,验证2个方程对3种环氧树脂体系粘度的普适性,结果表明环氧树脂材料的粘度随温度上升呈指数形式下降;Licht W等提出的改进方程可有效描述并预测3种环氧树脂体系基本组分的粘度随温度的变化趋势。

As an important index of technological performance of epoxy resins,viscosity(dynamic viscosity)has close relationship with resin′s surface tension,fluidity,and impregnation with additive reinforcing materials,and it has been regarded as one of the most important parameters in manufacture.Thus,analyzing how viscosities of basic compositions for epoxy insulators vary with temperature can be instructive in choosing proper parameters during manufacture process.In this work,viscosity properties of several compositions for insulators were measured by using rotational viscometer and fitted with Arrhenius equation and improved equation proposed by Licht W et al with wide application in other fields.Results testified these two equations and showed that viscosities decreased exponentially as the temperature rose;by comparison,it has been found that the improved Licht W equation can more precisely describe and predict the temperature-dependent variations of epoxy resin materials′viscosities.