摘要
研究了纯丙乳液、硅丙乳液和热塑性丙烯酸树脂3种材料涂膜的拉伸模量、拉伸强度、断裂伸长率,发现3种涂膜较脆、强度较小。用重新设计的透湿杯,测定了3种涂膜和用其涂覆的壁画试块的水汽透过性,并结合扫描电镜观察,发现3种涂膜的水汽透过率比较接近;3种材料涂膜对试块微观形貌的影响和对试块水汽透过性的影响之间存在关联。
Three conservation materials including pure acrylic emulsion, silicone-acrylate emulsion and paraloid b-72 （thermoplastic acrylic resin）are commonly used in conservation of the wall paintings. In this article, the mechanical properties including tensile modulus, tensile strength and elongation at break of the films derived from the said materials are analyzed. Meanwhile, the water vapor permeability of the films and the treated and untreated samples are characterized via a specially designed testing cup. The results indicate that the films are fragile and weak in strength. The SEM shows that the water vapor permeability of the three films is similar. Finally the effect of the morphologic structure of the treated samples on water vapor permeability is analyzed.
出处
《涂料工业》
CAS
CSCD
北大核心
2015年第6期51-55,共5页
Paint & Coatings Industry
关键词
壁画
保护材料
力学性质
水汽透过率
wall paintings
conservation materials
mechanical properties
water vapor permeability
