화학공학소재연구정보센터
학회 한국고분자학회
학술대회 2022년 봄 (04/06 ~ 04/08, 대전컨벤션센터)
권호 47권 1호
발표분야 고분자합성
제목 Improvement of physical properties of silane-modified waterborne polyurethane using controlled silica content
초록 The waterborne polyurethane modified with silane coupling agent (silane-modified WPU) was synthesized using polyester diol, isophorone diisocyanate, dimethylolpropionic acid, and 3-aminopropyl trimethoxysilane. Silane-modified WPU/silica composites were prepared through a sol-gel process according to the silica content. The Si-O-Si bonding structure of silane-modified WPU/silica composites was confirmed by FT-IR. The effects of silica content on tensile properties and pencil hardness of silane-modified WPU/silica composites were investigated. Thermal properties were measured using thermogravimetric analysis and differential scanning calorimetry. As a result, as the silica content increased, the tensile strength, pencil hardness and heat resistance of the composites increased due to the improvement of the crosslinking density.
저자 문석규1, 권용록1, 김정수1, 박한수2, 김동현1
소속 1한국생산기술(연), 2중앙대
키워드 Waterborne polyurethane; 3-aminopropyl trimethoxysilane; Silica; Sol-gel process
E-Mail dhkim@kitech.re.kr