【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。更多还原

【Abstract】 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.更多还原