纳米SiO_(2)/水性聚氨酯复合液的制备及其在模拟纸质文物保护中的应用  

Preparation of Nano-SiO_(2)/Waterborne Polyurethane Complex Coating and Its Application in Simulated Paper Relics Protection

作　　者：夏蔓 李豪豪 张力源 张秀梅[1] XIA Man;LI Haohao;ZHANG Liyuan;ZHANG Xiumei(College of Textile Science and Engineering(International Institute of Silk),Zhejiang Sci-Tech University,Hangzhou,Zhejiang Province,310018)

机构地区：[1]浙江理工大学纺织科学与工程学院(国际丝绸学院),浙江杭州310018

出　　处：《中国造纸》2023年第1期51-58,共8页China Pulp & Paper

摘　　要：本研究采用原位聚合法,利用纳米SiO_(2)对水性聚氨酯进行改性,制备了一种可用于纸质文物保护的复合涂布液,并研究了手工宣纸涂布前后的形貌及力学性能,对保护液应用于模拟纸质文物的性能进行了评价。结果表明,具有光触媒作用的纳米SiO_(2)引入水性聚氨酯中后分散良好,具有纳米粒径,且保护液在全紫外波段有80%左右的紫外线吸收,具有一定的紫外屏蔽效果。当纳米SiO2的添加量为0.5%时,与原纸相比,保护液涂布宣纸撕裂度提高了204.9%,抗张指数提高了282.7%;且具有良好的抗紫外老化性能。In this study, a complex coating used in paper relics protection was prepared by modified waterborne polyurethane with nano-SiO_(2)via in-situ polymerization. The surface appearance and mechanical properties of hand-made xuan paper before and after coating were studied, and the application performance of the coating to the simulated paper relics was characterized. The results showed that the nano-SiO_(2)with photocatalyst function introduced into the waterborne polyurethane was good dispersed with nano particle size.Moreover, the coating absorbed about 80% of the UV in the whole UV band, indicating a certain UV shielding effect. When the nano SiO2content was 0. 5%, compared with control xuan paper, the tear strength of xuan paper increased 204. 9% and the tensile index increased 282. 7%, and with a good UV aging resistance.

关 键 词：纳米SiO_(2) 水性聚氨酯 抗紫外光老化 增强 手工宣纸 

分 类 号：TS79[轻工技术与工程—制浆造纸工程]