{"title":"Tri-functionally modified spherical silica for high-performance epoxy resin sealant","authors":"","doi":"10.1016/j.coco.2024.102081","DOIUrl":null,"url":null,"abstract":"<div><p>The integration of inorganic nanoparticles as reinforcement imparts epoxy resin with outstanding comprehensive performance, facilitating the utilization across diverse applications spanning coatings, adhesives, and composites. However, the persistent challenge lies in achieving optimal interfacial compatibility between the fillers and the resin matrix. This study focuses on the synthesis of tri-functionally modified spherical silica particles with an average size of 700 nm by empolying three distinct types of silane coupling agents in a synergistic manner to achieve desired functionalization. These agents endow the resulting particles with reactive groups, including epoxy and amine functionalities, which enhance interfacial compatibility and adhesion between the silica particle fillers and the epoxy resin matrix. Additionally, the incorporation of non-reactive phenyl groups serves to reduce the viscosity of resin composites. These modified silica particles are integrated into the sealant formulations, which exhibits commendable reliability and processability. It exhibits a 95 % reduction in moisture permeability, an increase in glass transition temperature by approximately 30 °C, and a decrease in coefficient of thermal expansion by 5∗10<sup>−6</sup>/k, compared to the sealant prepared with unmodified silica. The outcomes of this research present promising avenues for the advancement of cutting-edge display technologies.</p></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":null,"pages":null},"PeriodicalIF":6.5000,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Composites Communications","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2452213924002729","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, COMPOSITES","Score":null,"Total":0}
引用次数: 0
Abstract
The integration of inorganic nanoparticles as reinforcement imparts epoxy resin with outstanding comprehensive performance, facilitating the utilization across diverse applications spanning coatings, adhesives, and composites. However, the persistent challenge lies in achieving optimal interfacial compatibility between the fillers and the resin matrix. This study focuses on the synthesis of tri-functionally modified spherical silica particles with an average size of 700 nm by empolying three distinct types of silane coupling agents in a synergistic manner to achieve desired functionalization. These agents endow the resulting particles with reactive groups, including epoxy and amine functionalities, which enhance interfacial compatibility and adhesion between the silica particle fillers and the epoxy resin matrix. Additionally, the incorporation of non-reactive phenyl groups serves to reduce the viscosity of resin composites. These modified silica particles are integrated into the sealant formulations, which exhibits commendable reliability and processability. It exhibits a 95 % reduction in moisture permeability, an increase in glass transition temperature by approximately 30 °C, and a decrease in coefficient of thermal expansion by 5∗10−6/k, compared to the sealant prepared with unmodified silica. The outcomes of this research present promising avenues for the advancement of cutting-edge display technologies.
期刊介绍:
Composites Communications (Compos. Commun.) is a peer-reviewed journal publishing short communications and letters on the latest advances in composites science and technology. With a rapid review and publication process, its goal is to disseminate new knowledge promptly within the composites community. The journal welcomes manuscripts presenting creative concepts and new findings in design, state-of-the-art approaches in processing, synthesis, characterization, and mechanics modeling. In addition to traditional fiber-/particulate-reinforced engineering composites, it encourages submissions on composites with exceptional physical, mechanical, and fracture properties, as well as those with unique functions and significant application potential. This includes biomimetic and bio-inspired composites for biomedical applications, functional nano-composites for thermal management and energy applications, and composites designed for extreme service environments.