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

• Published in: Advanced powder technology : the international journal of the Society of Powder Technology, Japan Japan, 2024-12, Vol.35 (12), p.104701, Article 104701
• Main Authors: Maekawa, Ryosuke, Nakayoshi, Haruna, Kawano, Makoto, Takai, Chika
• Format: Article
• Language: English
• Subjects: Hansen solubility parameter; Particle dispersion; Silane coupling agent
• ISSN: 0921-8831
• DOI: 10.1016/j.apt.2024.104701

[Display omitted] •The viscosity of alumina-dispersed resin can be controlled by the HSP value of the alumina surface modifier.•HSP values can be accurately predicted by QSPR (machine learning the calculated σ profile of molecules).•HSP values of silane coupling agents, alumina surface modifiers, can be accurately calculated by QSPR.•By using QSPR method, it is possible to efficiently design the optimal silane coupling agent. 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.