壁画保护材料PVAc、PVA的性质研究与表征  

Studies and Characterization of PVAc, PVA as Wall Paintings Conservation Materials

作　　者：张化冰[1,2] 苏伯民[1,2] 段修业[1,2] 张文元[1,2] 

机构地区：[1]敦煌研究院保护研究所,甘肃敦煌736200 [2]国家古代壁画保护工程技术研究中心,甘肃敦煌736200

出　　处：《敦煌研究》2011年第6期29-35,共7页Dunhuang Research

基　　金：国家973课题"脆弱性硅酸盐质文化遗产保护关键科学与技术基础研究"(2012CB720902);敦煌研究院院级课题(201010)

摘　　要：PVAc、PVA是两类常见的壁画保护材料。本文以聚乙烯醇PVA-1788、PVA-1799、聚乙酸乙烯酯(PVAc)、PVAc乳液等四种为代表,综述了材料的历史、结构、组成、型号和物化性质。采用红外光谱技术,表征了材料的结构,采用剪切式黏度计和铂金环式张力仪测定了材料稀溶液的黏度和表面张力,并研究了其随溶液浓度变化的情况。PVAc and PVA are two kinds of material commonly used in wall painting conservation. This paper reviews and summarizes the structures, compositions, types, physical and chemical properties, and history of the resin, centering on four representative materials, namely PVA-1788, PVA-1799, PVAc resin and PVAc emulsion. The structures of the four materials are characterized by FT-IR., while their dilute solution＇s viscosity and surface tension are measured by BROOKFIELD viscometer and JZ-200A automatic surface tensiometer. Concurrently, the changes of the four solution＇s viscosity and surface tension with concentration are studied.

关 键 词：聚乙酸乙烯酯 聚乙烯醇 壁画 保护材料 

分 类 号：K879.4[历史地理—考古学及博物馆学]