以丙烯酸六氟丁酯(HFBA)和含双键的硅树脂(SR)共聚合成疏水乳液,涂敷在棉织物表面上,然后再涂敷十六烷基二甲基苄基氯化铵(HDBAC)改性的蒙脱土(MMT),制备出超疏水涂层。对产物进行了XRD和扫描电镜分析,并考察了单体质量比、疏水乳液及MMT涂覆次数对棉织物疏水性能的影响。结果表明,制备的乳液-蒙脱土复合涂层在棉织物表面形成了类似蝶翅表面的微米-纳米二级结构。当单体SR与HFBA的质量比为5∶18,乳液和MMT分散液浸涂分别为3次和2次时,可使棉织物表面获得良好的超疏水性,接触角可达159.11°。
Hydrophobic emulsion was prepared by copolymerization of HFBA and SR,and coated on cotton fabrics.Then the resulting cotton fabrics were coated by HDBAC modified MMT dispersion,so the super hydrophobic coating was obtained.The obtained products were characterized by XRD and SEM.The influence of the monomer mass ratio,the emulsion dipping time and MMT suspension dipping time on the hydrophobic property were studied.The results showed that the emulsion-MMT composite coating formed a butterfly wing-like micro-nano double-level structure on the surface of cotton fabric.When the monomer mass ratio,the emulsion dipping time and the MMT suspension dipping time were 5∶18,3 times and 2 times,the cotton fabric surface achieved super hydrophobicity,and the water contact angle was 159.11°.
[1] Barthlott W,Neinhuis C.Purity of the sacred lotus,or escape from contamination in biological surfaces[J].Planta,1997,202(1):1-8.
[2] Feng L,Li S,Li Y,et al.Super-hydrophobic surfaces:from natural to artificial[J].Cheminform,2003,34(24):1857-1860.
[3] Manna O,Das S K,Sharma R,et al.Superhydrophobic and superoleophobic surfaces in composite materials[M].Heidelberg:Springer Berlin,Composite Materials,2017:647-686.
[4] Liu K,Cao M,Fujishima A,et al.Bio-inspired titanium dioxide materials with special wettability and their applications[J].Chemical Reviews,2014,114(19):10044-10094.
[5] Nagappan S,Ha C S.Emerging trends in superhydrophobic surface based magnetic materials:fabrications and their potential applications[J].Journal of Materials Chemistry A,2014,3(7):3224-3251.
[6] Xu B,Ding J,Feng L,et al.Self-cleaning cotton fabrics via combination of photocatalytic TiO2 and superhydrophobic SiO2[J].Surface and Coatings Technology,2015,262:70-76.
[7] Wang S D,Lin B J,Hsieh C C,et al.Application of superhydrophobic sol gel on canvas[J].Applied Surface Science,2014,307(1):101-108.
[8] Bhushan B,Yong C J.Natural and biomimetic artificial surfaces for superhydrophobicity,self-cleaning,low adhesion,and drag reduction[J].Progress in Materials Science,2011,56(1):1-108.
[9] Liu H,Gao S,Cai J,et al.Recent progress in fabrication and applications of superhydrophobic coating on cellulose-based substrates[J].Materials,2016,9(3):1-37.
[10] 房岩,孙刚,王同庆,等.蝴蝶翅膀表面非光滑形态疏水机理[J].科学通报,2007,52(3):354-357.
[11] 余倩,谭旭坤,毕明芳,等.改性蒙脱土应用现状的研究[J].化学世界,2015,56(6):374-377.
[12] Nosonovsky M.On the range of applicability of the Wenzel and Cassie equations[J].Langmuir the Acs Journal of Surfaces & Colloids,2007,23(19):9919-9920.
基金资助
陕西省教育厅专项科研计划项目(17JK0324);西安工程大学研究生创新基金项目(CX201716);大学生创新创业训练项目(1718)
PDF
(2404KB)
