文献类型：期刊文献

英文题名：Research on anti-graffiti coating of nanosilica-modified two-component waterborne polyurethane

作者：Li, Qin Xiang, Dingding Shi, Lei Zeng, Qian Han, Rui Lin, Wenhai

第一作者：李琴

通信作者：Lin, WH[1]

机构：[1]Guizhou Inst Technol, Sch Chem Engn, Guiyang, Guizhou, Peoples R China;[2]Qiannan Normal Univ Nationalities, Sch Chem & Chem Engn, Duyun, Guizhou, Peoples R China;[3]Guizhou Zhenhua Qunying Elect Co Ltd, State Owned 891 Factory, Guiyang, Guizhou, Peoples R China;[4]Wenzhou Kean Univ, Coll Sci Math & Technol, Wenzhou, Zhejiang, Peoples R China

第一机构：贵州理工学院化学工程学院

通信机构：corresponding author), Guizhou Zhenhua Qunying Elect Co Ltd, State Owned 891 Factory, Guiyang, Guizhou, Peoples R China.

年份：2026

卷号：36

期号：2

外文期刊名：POLIMEROS-CIENCIA E TECNOLOGIA

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001785629300001)】；

基金：Supported by Guizhou Provincial Basic Research Program (Natural Science) (Qiankeheji-ZK [2024] General517) . Guizhou Institute of Technology High-level Talent Scientific Research Fund Launch Project (2023GCC022) . The Young Scientific and Technological Talents Growth Project of Department of Education of Guizhou Province (Qianjiaohe KY [2022] 353) . Project of Education Department of Guizhou Province (Grant No KY [2014] 214) . The Teaching Reform Research Project of Guizhou Institute of Technology (2022TDFJG04) . Guizhou Institute of Technology High-level Talent Scientific Research Fund Launch Project (2023GCC026) .

语种：英文

外文关键词：anti-graffiti; nanosilica; oligomeric silsesquioxane; surface performance improvement; water-basedpolyurethane

摘要：We developed a new type of nano-modified two-component waterborne polyurethane(2K WPU)coating using a regular structure of nano-silica: methyl-polyhedral oligomeric silsesquioxane (POSS) as a modified material. The POSS regular cage structure is used to improve the hardness and wear resistance that waterborne polyurethane lacks, maintain its good water resistance and heat resistance, and does not contain a benzene ring structure in the coating, eliminating the hidden danger of yellowing of the original benzene ring-containing 2K WPU hardening coating. The coating was characterized by Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, scanning electron microscopy, contact angle measurement, UV-visible spectroscopy, water absorption test, hardness test, and anti-graffiti test. The evaluation results show that the modified coating has improved water resistance, hardness and contact angle, has excellent UV resistance, and has excellent anti-graffiti performance.