A Dual Application Method of Hollow-Structured Black TiO2 in Autonomous Driving and Semiconductor Packaging Fields

초록

In this study, hollow-structured black TiO2 (H-bTiO2) is successfully synthesized for application in autonomous vehicles, while the etched waste generated during the process is efficiently recycled for semiconductor packaging. LiDAR-detectable H-bTiO2 is synthesized using a sol-gel method and NH4OH etching process. The H-bTiO2 is incorporated into hydrophilic varnish to fabricate a black-tone paints, which demonstrates a black color (L*=13.1) and NIR reflectance (30.8 R%). Additionally, the etched waste from H-bTiO2 synthesis is recycled into silica nanoparticles, which are then employed as a filler in epoxy molding compound (EMC). The silica nanoparticles fillers show similar results to commercial EMC fillers. Therefore, this study introduces a simultaneous synthesis of two distinct types for both LiDAR application and the EMC fillers. 본 연구는 2025년 정부(방위사업청)의 재원으로 국방과학연구소의 지원을 받아 수행된 미래 도전국방기술 연구개발사업임(No.915066201).