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我图传统使用淀粉浆糊修裱老化和破损的图书档案。淀粉浆糊无毒无味,粘接和耐老化性能较好,但使用淀粉浆糊的修裱件容易生虫生霉。近年笔者参加羧甲基纤维素的研制工作,作为一种新型修裱浆糊,与淀粉浆糊相比,它具有许多独特的优点。一、羧甲基纤维素理化性质羧甲基纤维素(CMC)的分子式为[C_6H_7O_2·OCH_2COONa]_n,是纤维素的衍 相似文献
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影响档案修裱质量的主要因素及解决办法 总被引：2，自引：0，他引：2
档案修裱在档案保护工作中具有重要地位 ,修裱质量受多因素的综合影响。在整个修裱过程中 ,浆糊的制作与运用、纸张绫绢等原材料的质量以及修裱环境温湿度条件都会对修裱质量产生直接的影响。本文结合作者多年档案修裱实践经验分析了影响档案修裱质量的主要因素 ,并提出相关的技术措施与方法 ,供大家在工作中参考。 相似文献
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用高分子粘胶剂修裱纸质文件的可行性探索吴志刚,陈学敏修裱技术在我国已有千余年历史,其淀粉浆糊在这项传统工艺中具有举足轻重的作用,至今仍被广泛应用。而现代生物、化学技术的发展,使我们能够对天然淀粉进行一系列加工处理,淀粉浆糊的性能不断完善。但是,作为一... 相似文献
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淀粉浆糊是修裱工作中的主要胶粘剂 ,由于它粘性适中 ,修裱后的字画柔软平整 ,具有可逆性 ,有利于原件的揭裱 ,价格便宜 ,来源广泛 ,千百年来一直被人们采用。然而 ,淀粉浆糊存在易生霉长虫的缺陷 ,越来越为人们所重视。日本曾对胶粘剂进行了广泛深入的研究 ,研制开发出一种胶膜 ,国内有关部门和机构积极探索淀粉浆糊的防霉方法或试图寻找新的代用品。在我国南方 ,修裱大多直接用小麦淀粉（富强粉）做胶粘剂。对于众多胶粘剂的出现及防霉药物的加入 ,其生物学性能发生了怎样的变化 ,笔者在此进行了详细的研究。一、研究方法（一）培养基 :马… 相似文献
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正确看待档案修裱技术 总被引：3，自引：0，他引：3
修裱技术是纸质档案加固的方法之一,被广泛应用于档案保护中。修裱一般是选择与其原件材料一致的新纸进行整体托裱或局部修补,使档案纸张失去的强度得到恢复,寿命得到延长。经过修裱的档案,如果在后来的保管、利用中又发生老化或者损坏,还可以通过揭裱把支撑档案的托纸或者补纸揭取下来,换上新的材料,以新材料的机械强度继续支持和改善档案原件的强度,从而最大限度地延长档案寿命。 相似文献
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纸张脱酸是档案、图书保护技术工作者研究的主要课题之一,正在进行研究和开发。当前,修裱技术在各级档案馆非常普及,需修复的破碎纸张中许多属于酸性纸张,其纤维素成分已经发生了酸性水解与氧化反应。为了解决其脱酸与保护问题,本课题将Mg（HCO_3）_2作为修裱浆糊的稀释剂,利用平衡反应:Mg（HCO_3）_2MgCO_3↓+CO_2↑+H_2O使MgCO_3方解石晶体微粒沉积在档案纸张、托纸与浆糊中间,起到对酸的缓冲作用。据有关资料介绍,氧化纤维素在碱性条件下可继续降解,镁盐可与氧化纤维素形成稳定的螯合物,使在旧纸张中含量较高的氧化纤维素得以保护,使其在脱酸后不致继续降解。 相似文献
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Yanbing Luo 《文物保护研究》2013,58(8):448-455
ABSTRACTTo study the life expectancy and difference in aging resistance properties of different modern repair bamboo papers, hydrothermal/dry-heat ageing experiments on repair bamboo paper samples were conducted. The mechanical strength (tensile strength and folding endurance) of different papers during the ageing process were analyzed. Furthermore, the chemical properties (degree of polymerization and pH) of the samples were tested to search for the immanent cause of paper ageing. The results indicated that the ageing resistance ability and durability of modern repair paper are strongly related to their production process, which corresponds with the initial properties of the paper. Mechanical pulp had a low degradation resistance, which was further exacerbated by the chemical bleaching process. In the long run, traditional handmade papers with solar bleaching processes will have longer-term stability and durability. 相似文献
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The work reported here is a systematic study to evaluate the compatibility of using PS-F (potassium silicate with high modulus – fly ash) slurry in the conservation of adobe structures. Firstly, the optimum mixing proportion (0.47) was determined by flow meter. Then the experimental program was divided into two parts: one part studied changes in physical and mechanical properties with increase in setting time by means of the measurement of moisture content, compressive and flexural strength, elastic-wave velocity, density, and porosity; the other part studied the durability of PS-F slurry through temperature and humidity cycles, freeze–thaw cycles, water stability, tensile testing, and alkali resistivity tests. The results show that the consolidation process with the slurry can meet the requirements of conservation applications and provide a timely anchoring force, and the slurry and soil mass of adobe-based structures have good compatibility in physical and mechanical properties. In addition, the slurry can strongly resist freeze–thaw cycles, temperature-moisture cycles, and tensile stress and has a relatively weak resistance to alkali solutions and water immersion. In conclusion, PS-F with a mixing ratio of 0.47 is a suitable slurry for conservation of adobe structures. 相似文献
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ABSTRACTSticky rice paste is a viscous material commonly used in traditional Chinese construction. It has the basic properties of high viscosity and viscoelasticity, good corrosion and weather resistance, and a small coefficient of expansion. Sticky rice paste is usually added to site soils to modify their basic physical and mechanical properties. This study found that gelatinized sticky rice-paste-modified site soils have clearly improved physical and mechanical properties compared to 20 and 100°C water-modified soils when 1% (wt%) sticky rice paste is added as the soil modifier. The liquid and plastic limits, and the plastic index of the soil are improved upon modification, to 27.4, 17.7, and 9.7%, respectively. The unconfined compressive strength and hydraulic conductivity were significantly increased and reduced, respectively. In addition, there was a reduction in the rate of disintegration by water, while the water resistance of the soil was improved. X-ray diffraction, Fourier transform infrared, and thermogravimetry/differential scanning calorimetry studies reveal that the improved properties arise through physical processes between the sticky rice paste and the soil. Scanning electron microscopy reveals that dispersed branched-chain sticky rice-paste molecules extensively infiltrate the surfaces of the soil particles on the nanoscale and become attached to them to form a good adhesive colloid that solidifies the soil particles after water evaporation, resulting in a compact structure. 相似文献
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已被微生物污染的档案库房如何治理是多年来困扰档案工作者的难题之一,担忧主要来自治理用的物理方法或化学试剂对档案实体的破坏及对人体健康的危害。本文通过采用低剂量甲醛高锰酸钾熏蒸消毒档案库房,检测并对比了消毒前后不同时间的纸张含水量、PH值、耐破度、耐折度、撕裂度等评价纸张耐久性的重要指标。结果发现,甲醛高锰酸钾熏蒸消毒可以小幅度降低纸张PH值、引起纸张耐破度下降,但对纸张含水量、撕裂度、抗张力、耐折度和断裂伸长率的影响没有统计学差异。综上,本文认为使用低剂量甲醛高锰酸钾进行档案库房熏蒸消毒会对纸张耐久性产生一定影响,但影响有限。在档案库房微生物污染严重需要治理的情况下,可以考虑使用甲醛高锰酸钾化学熏蒸消毒。 相似文献
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本文参照国家档案工作行业标准中关于档案字迹耐久性测试法的相关规定,通过色差比较的方法对复印件字迹进行了耐老化、耐强碱、耐强酸、耐氧化、耐有机溶液、耐水、耐光照、耐磨擦和耐剥离等九个方面实验,从实验的角度对复印件字迹的耐久性进行探讨,从而对复印件的耐久性和归档问题提供了有力的证明。 相似文献
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林明 《图书馆工作与研究》2012,(3):71-74
浆糊是文献修复的重要材料。中国古代文献修复和装裱用浆糊多为小麦面粉添加若干添加物煮制或用开水冲制而成,本文依据古代文献内容对此问题加以探讨和研究,希望能对文献修复工作有所裨益。 相似文献
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无碳复写纸档案耐久性与原纸、微胶囊、显色剂等主要组成成份的性质和保存环境因素密切相关。本文就影响无碳复写纸档案耐久性的原纸、微胶囊、显色剂等内在因素进行研究。 相似文献
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本文论述的BDM保护液在中和纸张中酸的同时,在纸张中沉积微量沉淀,既能使纸张保持7—7.5之强力缓冲的中性,又能与纸张纤维素、半纤维素基环上的羟基与羰基形成稳定螯合物,通过测试其与传统碳酸氢镁溶液处理的纸张老化前后耐折度、抗张强度、撕裂度及白度的保持率,证明该螯合保护液能使纸张耐久保存。 相似文献