纳米SiO_2/TiO_2掺杂的有机硅防污涂料的研究
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摘要
本文首先通过自由基聚合反应合成了有机硅改性丙烯酸树脂,采用红外光谱对其结构进行了表征。进一步并将纳米SiO_2和纳米TiO_2添加到有机硅改性丙烯酸树脂中,喷涂到Q325碳钢表面,主要考察纳米SiO_2和纳米TiO_2添加量的比例对静态水接触角和力学性能的影响。实验结果表明纳米SiO_2和纳米TiO_2添加量的比例为8%∶8%时,复合涂层接触角可达149°,附着力为1. 35 MPa;硬度为6H,且未出现粉化,综合性能最佳,且此时制备的涂层在盐雾试验时表面平整光滑。
The silicone modified acrylic resin was prepared with free radical polymerization reaction and the structure of the obtained coating was characterized using FI-IR spectrum. Different amounts of nano SiO_2 and nano TiO_2 particle were added into this silicone modified acrylic resin and then sprayed onto Q235 mild steel surface. The effect of the ratio of nano SiO_2 and nano TiO_2 particle on static contact angle and mechanical properties was investigated. Results suggested that when the ratio of nano SiO_2 and nano TiO_2 particle was 8% ∶ 8%,the contact angle reached 149°,the adhesion force was 1. 35 MPa and the hardness was6 H. Additionally,no pulverization occurred and the comprehensive performance was the best. Salt spray test indicated that the surface of the obtained composite coating was flat and smooth after 48 h.
The silicone modified acrylic resin was prepared with free radical polymerization reaction and the structure of the obtained coating was characterized using FI-IR spectrum. Different amounts of nano SiO_2 and nano TiO_2 particle were added into this silicone modified acrylic resin and then sprayed onto Q235 mild steel surface. The effect of the ratio of nano SiO_2 and nano TiO_2 particle on static contact angle and mechanical properties was investigated. Results suggested that when the ratio of nano SiO_2 and nano TiO_2 particle was 8% ∶ 8%,the contact angle reached 149°,the adhesion force was 1. 35 MPa and the hardness was6 H. Additionally,no pulverization occurred and the comprehensive performance was the best. Salt spray test indicated that the surface of the obtained composite coating was flat and smooth after 48 h.
引文
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[3]汪春玲,纳米二氧化钛/聚丙烯酸酯复合材料的制备及性能研究[D].广州:华南理工大学,2016.
[4]Scardino A J,Zhang H,Cookson D J,et al.The role of nanoroughness in antifouling[J].2009(25):757-767.
[5]Damodaran V B,Murthy N S,Bio-inspried strategies for designing antifouling biomaterials[J],Biomaterials Research,2016(20):18-26.
[6]赵广宇,逄昆,海洋防污涂料用功能树脂发展概述[J],全面腐蚀控制,2016(6):33-38.
[7]Chen X X,Dam M A,Ono K,et al.A thermally remendable cross-linked polymeric material[J].Science,2002(295):1698-1702.
[8]White S R,Sottos N R,Geubelle P H,et al.Autonomic healing of polymer composites[J].Nature,2001(409):794-797.
[9]杜飞飞,王佳华,姚唯亮.防污涂料综述[J].上海涂料,2012(2):31-37.
[10]Nurioglu A G,Esteves A C C,With G.Non-toxic,nonbiocide-release antifouling coatings based on molecular structure design for marine applications[J].Journal of Materials Chemistry B,2015(3):6547-6570.
[11]Banerjee I,Pangule R C,Kane R S.Antifouling coatings:recent developments in the design of surfaces that prevent fouling by proteins,bacteria,and marine organisms[J].Advances Materials,2011(23):690-718.