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高強度建筑疏水材料的制備及其應用

作者:付國永

關鍵字:高強度,建筑,疏水,材料,的,制備,及其,應用,

 
(石家莊職業技術學院 建筑工程系,河北 石家莊  050081)
    摘要:采用環氧樹脂為基礎涂層,以納米氧化鋁構造粗糙度,然后以聚二甲基硅氧烷為低表面能物質對Al2O3/環氧樹脂超疏水涂層進行浸涂,制備Al2O3/環氧樹脂超疏水涂層;探討Al2O3/環氧樹脂超疏水涂層的耐熱老化穩定性、耐酸堿性、耐溶劑性、凍融穩定性和機械穩定性,用Cassie理論對表面的潤濕性講行分析。結果表明:所制備的Al2O3/環氧樹脂超疏水涂層水接觸角達到156.7°,滾動角為4.9°;該超疏水涂層在經過高溫、強酸、強堿溶液和有機溶劑處理后均能保持超疏水性,此外,該超疏水涂層也具有優異的機械性能,在經過水沖、刀劃、膠帶剝離和水煮30個摩擦循環后仍具有超疏水性。
    關鍵詞:超疏水性;Al2O3/環氧樹脂超疏水涂層;穩定性
    中圖分類號:TU56+1.65        文獻標識碼: A        文章編號:1001-702X(2019)11-0143-04
 
Preparation and application of high strength building hydrophobic materials
FU Guoyong
(Shijiazhuang University of Applied Technology,Shijiazhuang 050081,China)
    Abstract:Al2O3/epoxy resin super-hydrophobic coatings was prepared using epoxy resin as adhesive,nano-alumina for constructing roughness and polydimethylsiloxane as low surface energy material. The thermal aging stability,acid-alkali resistance,solvent resistance,freeze stability and mechanical stability of Al2O3/epoxy resin super-hydrophobic coatings were tested. The Cassie theory was used to analyze the wettability of the surface. The results show that the coatings present a water contact angle of 156.7° and a sliding angle of 4.9°. The super-hydrophobic coatings could also maintain their super-hydrophobic performance after undergoing a series of chemical durability tests including high temperature,a wide pH range and organic solvents. Especially,the resulting coatings have ultra-high mechanical robustness under very harsh conditions and can resist abrasion for 30 cycles with sandpaper. They also perform well under water-drip,knife-scratch,tape stripping and boiling water.
    Key words:superhydrophobicity,Al2O3/epoxy resin superhy-drophobic coating,stability
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