基于羟丙基甲基纤维素复合纳米Ca（OH）2的纸质档案脱酸加固  

Deacidification and Strengthening of Paper Archives Based on the Composite of Hydroxypropyl Methyl Cellulose and Ca（OH）2 Nanoparticles

作　　者：凡晓宇 胡道道 梁兴唐 李润梅 

机构地区：[1]陕西师范大学历史文化遗产保护教育部工程研究中心

出　　处：《档案学研究》2018年第1期118-122,共5页Archives Science Study

基　　金：国家重点基础研究发展计划(973计划)(2012CB725302)资助成果

摘　　要：以羟丙基甲基纤维素（HPMC）为纳米氢氧化钙的稳定剂和纸质档案的加固剂,制备HPMC稳定的纳米Ca（OH）_2醇水分散液（H-C分散液）,用于纸张脱酸加固处理。利用X射线衍射仪、激光粒度仪、紫外—可见分光光度计对H-C分散液进行表征,考察HPMC对纳米Ca（OH）_2醇水分散液稳定性的影响;采用扫描电镜、pH计、万能材料试验机、耐折度仪等表征H-C分散液对纸张的脱酸加固作用。结果表明,HPMC可长时间稳定纳米Ca（OH）_2醇水分散液;对纳米Ca（OH）_2具有裹覆作用,提高其在纸张上的均匀分散并减少纳米Ca（OH）_2与纸张直接接触,减轻纳米Ca（OH）_2对纸张的影响。H-C分散液在提高纸张p H的同时增强纸张的机械性能,并为纸张提供了一定的碱储量。Using HPMC as the stabilizer of Ca（OH）_2 nanoparticles and the reinforcement agent of paper archives,the ethanol-water dispersion of Ca（OH）_2 nanoparticles stabilized by HPMC（H-C dispersion）is prepared for the deacidification and strengthening of pap er. The Ca（OH）_2 nanoparticles are characterized by XRD. The influence of HPMC on the stability of Ca（OH）_2 nanoparticles dispersion is investigated by UV-Vis and laser particle size instrument. The effect of H-C dispersion on the paper is evaluated by some means such as SEM,p H,universal material testing machine and folding measurement. The results show that HPMC,with a cladding on Ca（OH）_2 nanoparticles, can stabilize the Ca（OH）_2 nanoparticles dispersion for a long time,which improve the distribution of Ca（OH）_2 nanoparticles in the paper and decrease the touch between Ca（OH）_2 nanoparticles and paper cellulose. This alleviates the adverse effect of Ca（OH）_2 nanoparticles to the paper. The H-C dispersion can simultaneously increase the p H of paper and enhance the strength of paper. In addition it provides an appropriate alkaline reserve for the paper.

关 键 词：纳米Ca(OH)2 HPMC 纸质档案 脱酸 加固 

分 类 号：G273.3[文化科学—档案学]