This work seeks to develop a better understanding of the influence that the chemistry of an epoxy thermoset system has on the stress-transfer capability of the fibre-matrix interface. We discuss the correlation between the interfacial shear strength (IFSS) and the properties of the matrix such as glass transition temperature (T_g), storage modulus and linear coefficient of thermal expansion (LCTE). The results indicate that each is strongly dependent on the hardener-to-epoxy ratio and it was found that changes in IFSS can be related to changes in the thermomechanical properties of the matrix. From the results presented it is hypothesized that residual radial compressive stresses at the interface are influenced by the chemistry of the matrix system due to the changes in the properties of the matrix. The combination of these residual stresses with static friction may lead to a potential variation of the interfacial stress-transfer capability in glass-fibre reinforced epoxy composites.

这项工作旨在更好地理解环氧热固性体系的化学性质对纤维-基体界面的应力传递能力的影响。我们讨论了界面剪切强度（IFSS）与基体性质（例如玻璃化转变温度（T _g），储能模量和线性热膨胀系数（LCTE）。结果表明，每种方法都强烈依赖于固化剂与环氧树脂的比例，并且发现IFSS的变化可能与基质热机械性能的变化有关。从给出的结果可以推测，由于基体性质的变化，界面处的残余径向压应力受基体系统化学性质的影响。这些残余应力与静摩擦的结合可能导致玻璃纤维增​​强环氧复合材料中界面应力传递能力的潜在变化。