摘要
在棕榈蜡/乙酸乙酯悬浊液中超声分散疏水性纳米二氧化硅制备蜡质超疏水涂料,用浸渍提拉法在玻璃片表面制备超疏水涂层。单因素实验考察棕榈蜡在乙酸乙酯中的浓度、疏水性纳米二氧化硅的添加量和干燥方式对疏水性能的影响,分析不同因素情况下的接触角、滚动角和防粘附性能。结果表明棕榈蜡在乙酸乙酯中的浓度为4g/100mL,纳米二氧化硅添加量占棕榈蜡质量的1/2,室温中自然干燥,涂层疏水性效果最佳,此条件下制备的超疏水涂层的接触角为150.60°,滚动角为6°。该涂层适用于不同的基材(如玻璃片、PE膜、BOPP膜的铝塑复合膜)。通过对酸奶粘附性的试验,发现涂层在各种基材表面表现出良好的防粘附性能,酸奶可在其上自由滚动。用热封时间作为指标,测试施加涂层后的热封性能,结果表明,涂层的施加不影响铝塑复合膜等耐高温材料的热封性。
In this paper,waxy superhydrophobic coatings were prepared by ultrasonically dispersing hydrophobic nano-silica in a carnauba wax/ethyl acetate suspension.The superhydrophobic coatings were prepared on the surface of the glass sheet by a dip-coated method.The effects of the concentration of carnauba wax in ethyl acetate,the addition amount of hydrophobic nano-silica and the drying method on hydrophobic of superhydrophobic coatings was studied by single factor experiment.The contact angle,rolling angle and anti-adhesion performance under different factors were analyzed.The results showed that when the concentration of carnauba wax in ethyl acetate was 4 g/100 mL,the amount of nano-silica added was 1/2 of the mass of carnauba wax,and naturally dried at room temperature,the hydrophobic of the coatings was optimum.In this condition,the contact angle and roll angle of the hydrophobic coatings was 150.60 and 6°,respectively.Moreover,the coatings are applicable onto different substrates(e.g.,glass slide,PE film,BOPP film and aluminum-plastic composite film).Through the test of adhesion to yoghurt,it was found that the coating exhibited good anti-adhesion properties on various substrate surfaces,and the yogurt could roll freely thereon.Using the heat-sealing time as an index,the heat-sealing property after application of the coating was tested.It was found that the application of the coating did not affect the heat-sealing property of the high-temperature resistant material such as the aluminum-plastic composite film.
作者
宋美慧
唐亚丽
卢立新
王军
丘晓琳
SONG Meihui;TANG Yali;LU Lixin;WANG Jun;QIU Xiaolin(School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China;Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment & Technology, Wuxi 214122,China)
出处
《功能材料》
EI
CAS
CSCD
北大核心
2018年第12期12195-12199,共5页
Journal of Functional Materials
基金
国家自然科学基金资助项目(31671909/003)
关键词
超疏水
生物蜡
棕榈蜡
防粘附
接触角
superhydrophobic
biowax
carnauba wax
anti-adhesion
contact angle
