两类农用棚膜防雾滴涂层表面张力  

Surface Tension of Two Types of Antifogging Coating for Farm Shed Film

作　　者：王秀珍 滕谋勇[1] 杨铭霞 李梦瑶 贾清 战艳虎[1] WANG Xiuzhen;TENG Mouyong;YANG Mingxia;LI Mengyao;JIA Qing;ZHAN Yanhu(School of Materials Science and Engineering,Liaocheng University,Liaocheng 252059,China)

机构地区：[1]聊城大学材料科学与工程学院,山东聊城252059

出　　处：《聊城大学学报（自然科学版）》2024年第3期62-68,共7页Journal of Liaocheng University:Natural Science Edition

基　　金：国家自然科学基金项目(52103054)资助。

摘　　要：近些年,为了提高大棚的透光性,提高作物的产量和质量,农用棚膜亲水涂层得到广泛关注,市场上出现了各种亲水涂层。但是对于表面张力的研究却很少。为此,在聚乙烯(PE)薄膜上制备不同配比PVA/Al_(2)O_(3)亲水涂层及丙烯酸、丙烯酸六氟丁酯和4-丙烯酰氧基二苯甲酮三元共聚物亲水涂层,测量了对于三种液体(水、二碘甲烷、甲酰胺)的接触角。利用几何平均(OW)法和Lifshitz-van der Waals/酸碱(LW/AB)法间接计算亲水涂层的表面张力,并与未处理PE薄膜和电晕处理的PE薄膜进行对比,发现亲水涂层的表面张力大于电晕处理的PE薄膜和未处理的PE薄膜;且OW法计算得到PVA/Al_(2)O_(3)亲水涂层比例为5∶3时表面张力最大;LW/AB法计算得到PVA/Al_(2)O_(3)亲水涂层比例为5∶2时表面张力最大。由原子力显微镜得到的PVA/Al_(2)O_(3)亲水涂层比例为5∶3时粗糙度最大。本研究可为农用棚膜防雾滴涂层的开发提供理论指导。In recent years,in order to improve the light transmittance of greenhouses and improve the yield and quality of crops,the hydrophilic coating of agricultural shed film has received widespread attention,and a variety of hydrophilic coatings have appeared in market.However,the surface tension is rarely studied.Herein,polyvinyl alcohol/alumina oxide(PVA/Al_(2)O_(3))hydrophilic coatings with different ratios of two components and ternary copolymers hydrophilic coatings of acrylic acid,hexafluorobutyl acrylate,and 4-acryloyloxy benzophenone were prepared on polyethylene(PE)surface.The contact angles of hydrophilic coatings were measured.The surface tensions of the hydrophilic coating,untreated PE film and corona treated PE film were calculated indirectly by Owens-Wendt(OW)and Lifshitz-van der Waals/Acid-Base(LW/AB)methods.The results show that the surface tension of the hydrophilic coating is greater than those of corona-treated PE film and untreated PE film.Moreover,the surface tension is the largest when the mass ratio of PVA to Al_(2)O_(3)is 5∶3 calculated by OW method.In the case of LW/AB method,the calculated surface tension is the largest when the mass ratio of PVA to Al_(2)O_(3)is 5∶2.Atomic force microscopy shows that the PVA/Al_(2)O_(3)hydrophilic coating with ratio of 5∶3 has the largest roughness.This study provides theoretical guidance for the development of antifogging coating for agricultural shed film.

关 键 词：表面张力 接触角 润湿性 亲水涂层 防雾滴 

分 类 号：TQ325[化学工程—合成树脂塑料工业]