文献类型：期刊文献

英文题名：Enhancement of mechanical and thermal properties of UV-curable wood coatings by cellulose nanofibrils and carboxylated organo-montmorillonite

作者：Sun, Yuhui[1,2,3] Long, Ling[1] Li, Baojun[2,4] Kong, Dingfeng[2,4] Liang, Changli[3] He, Ming[2,4] Liu, Ru[1]

第一作者：Sun, Yuhui

通信作者：Liu, R[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[2]Skshu New Mat Res Shanghai Co Ltd, Skshu Inst Sci Res, Shanghai, Peoples R China;[3]Xiaosen New Mat Technol Co Ltd, Res & Dev Dept, Mingguang, Peoples R China;[4]Skshu Paint Co Ltd, Fujian Key Lab Architectural Coating, Putian, Peoples R China

年份：2024

外文期刊名：POLYMER COMPOSITES

收录：;EI(收录号：20241215792820);Scopus(收录号：2-s2.0-85188238897);WOS:【SCI-EXPANDED(收录号:WOS:001184283500001)】；

基金：National Key Research and Development Program of China, Grant/Award Number: 2022YFD2200703

语种：英文

外文关键词：cellulose nanofibrils; digital printed decorative panels; mechanical strength; organo-montmorillonite; UV-curable wood coatings

摘要：In this study, the impact of incorporating cellulose nanofibrils (CNF) and carboxylated organo-montmorillonite (OMMT), separately or in combination, into a UV-curable wood coating was evaluated for performance enhancement. This study investigated the influence of nanoparticle loading percentage on the mechanical properties and thermal behavior of the coating, as well as the surface properties of digitally printed decorative wood-based panels. The results indicated that the addition of CNF or OMMT increased the viscosity of the polymer solutions. Although CNF randomly oriented within the matrices, OMMT adhered to the surface of the polymer matrix. Chemical crosslinking was observed between CNF/OMMT and the coating. The addition of CNF and OMMT improved the thermal stability of the neat UV curing coating. The tensile strength of nanocomposite films with a 6 wt% loading of CNF increased significantly from 7.63 MPa to 12.73 MPa compared to pure films. The reinforcing effect of CNF on the tensile performance was significantly better than that of OMMT. Adding CNF to the matte coating slightly improved the clarity of the printed decorative panels. When CNF and OMMT were added together in the coating, there was a synergistic enhancement in the low gloss and high pencil hardness of the panels. Highlights Both CNF and OMMT were chosen to achieve performance improvements A simple filling method was adopted for preparation of reinforced coating The nanocomposite films exhibited fine thermal and mechanical properties The better integrated property was obtained from the C + CNF3 + OMMT0.8 sample The physicochemical interaction of nanofiller with polymer molecule existed