Viscosity control of alumina dispersed resin through design of surface modifier by a QSPR-method

In order to dissipate heat in electronic devices, particle-dispersed resins are commonly used to fill gaps between components. It is crucial to reduce the viscosity of the particle-dispersed resin to ensure complete filling. To achieve low viscosity, surface-modified particles using silane coupling agents have been developed to enhance compatibility with the resin. In this study, we focused on the Hansen solubility parameter (HSP) indicating compatibility of substances. We established a method to accurately predict HSP values using a combination of quantum chemical calculations and machine learning techniques known as the quantitative structure property relationships method (QSPR-method). Using this method, we calculated the HSP values of various silane coupling agents for modifying alumina particles and investigated their correlation with the viscosity of the alumina particle-dispersed resin. This study aimed to verify whether the QSPR method can be used to design silane coupling agents that can significantly reduce viscosity of particle-dispersed resins.