Evaluation of the wettability of prepared anti-wetting nanocoating on different construction surfaces

IF 1.7 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of the Mechanical Behavior of Materials Pub Date : 2022-01-01 DOI:10.1515/jmbm-2022-0260

Mustafa H. Omar, Wissam A. Hussian, M. A. Ahmed

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引用次数: 1

Abstract

Abstract Generally, the major problems of moisture damage are caused by wetting, and particularly in construction, which has led to extensive research for the production of hydrophobic (anti-wetting) coatings. The aim of this research is to prepare an anti-wetting (hydrophobic) nanocomposite coating for different construction surfaces (ceramic, brick and gypsum). Hydrophobic nanocomposite coating was synthesized using electrospinning technique. Polymethyl methacrylate and polystyrene (PS) solutions were prepared in different ratios and then separately reinforced with ZrO2 and ZnO nanoparticles. Contact angle, surface roughness, surface free energy and weathering effects were calculated for all specimens after being coated. All previously selected materials surfaces showed superhydrophobic and hydrophobic properties. The best results were obtained on ceramic surfaces after coating with PS/ZrO2. The water contact angle was 153° while the surface roughness was 0.491 µm and also showed the lowest surface free energy which was 5.5 mJ/m2. Weathering conditions tend to decrease the values of contact angle and this is due to the environmental effect of the weathering but they still have their hydrophobic properties. SEM test was used to determine the surface morphology and nanoparticle size for ceramic surfaces coated with PS and nano-ZrO2.

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制备的抗润湿纳米涂层在不同建筑表面的润湿性评价

一般来说，主要的水分损害问题是由润湿引起的，特别是在施工中，这导致了对疏水(抗润湿)涂料生产的广泛研究。本研究的目的是为不同的建筑表面(陶瓷、砖和石膏)制备一种抗湿(疏水)纳米复合涂层。采用静电纺丝技术合成了疏水纳米复合涂层。制备了不同比例的聚甲基丙烯酸甲酯和聚苯乙烯(PS)溶液，分别用ZrO2和ZnO纳米粒子增强。计算了涂层后试样的接触角、表面粗糙度、表面自由能和风化效应。所有先前选择的材料表面都显示出超疏水性和疏水性。在陶瓷表面涂覆PS/ZrO2后效果最好。水接触角为153°，表面粗糙度为0.491µm，表面自由能最低，为5.5 mJ/m2。风化条件会使接触角值减小，这是由于风化环境的影响，但它们仍然具有疏水性。利用扫描电镜(SEM)测试了PS和纳米zro2涂层陶瓷表面的形貌和纳米颗粒大小。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of the Mechanical Behavior of Materials Materials Science-Materials Science (miscellaneous)

CiteScore

3.00

自引率

11.10%

发文量

审稿时长

30 weeks

期刊介绍： The journal focuses on the micromechanics and nanomechanics of materials, the relationship between structure and mechanical properties, material instabilities and fracture, as well as size effects and length/time scale transitions. Articles on cutting edge theory, simulations and experiments – used as tools for revealing novel material properties and designing new devices for structural, thermo-chemo-mechanical, and opto-electro-mechanical applications – are encouraged. Synthesis/processing and related traditional mechanics/materials science themes are not within the scope of JMBM. The Editorial Board also organizes topical issues on emerging areas by invitation. Topics Metals and Alloys Ceramics and Glasses Soils and Geomaterials Concrete and Cementitious Materials Polymers and Composites Wood and Paper Elastomers and Biomaterials Liquid Crystals and Suspensions Electromagnetic and Optoelectronic Materials High-energy Density Storage Materials Monument Restoration and Cultural Heritage Preservation Materials Nanomaterials Complex and Emerging Materials.