Using 3-aminopropyltriethoxysilane (KH550) as the coupling agent and the organic solvent n-butanol as the dispersant,the micro-nano SiO2 particles were modified.Fourier transform infrared spectrometer (FT-IR) and scanning electron microscope (SEM) characterized and analyzed the particles before and after the modification.The results showed that SiO2 particles were successfully modified,and improved significantly the particle agglomeration phenomenon.The modified micro-nano SiO2 was compounded with epoxy resin (EP) substrate to obtain micro-nano SiO2/EP composite coating.The performance parameters such as the hardness,contact angle of the coating and the particle dispersion under different micro-nano particle ratios,and the blistering phenomenon under acid-base conditions were investigated.The coating was then soaked in the rotary trailer for the rotary pendant experiment,the medium was simulated geothermal water.The results shown that the coating with multi-level micro-nano composite structure had excellent mechanical properties,hydrophobic properties,and anti-corrosion properties.When the μm-SiO2∶nm-SiO2 was 0.25g∶0.25g,the coating had comprehensive performance best.Currently,the hardness was 5H,the adhesion was grade 1,and the acid and alkali resistance,hydrophobicity,and corrosion resistance which in the simulated geothermal water was good.
[1] 周总瑛,刘世良,刘金侠.中国地热资源特点与发展对策[J].自然资源学报,2015,30(7):1210-1221.
[2] 李文,孔祥军,袁利娟,等.中国地热资源概况及开发利用建议[J].中国矿业,2020,29(S1):22-26.
[3] 杨宏波,刘朝辉,丁逸栋,等.金属表面耐高温防腐涂料的研究进展[J].表面技术,2017,46(3):216-222.
[4] Gao X,Guo Z.Mechanical stability,corrosion resistance of superhydrophobic steel and repairable durability of its slippery surface[J].Journal of Colloid and Interface Science,2018,512:239-248.
[5] Zang D,Zhu R,Zhang W,et al.Corrosion-resistant superhydrophobic coatings on Mg alloy surfaces inspired by lotus seedpod[J].Advanced Functional Materials,2017,27(8):1605446.
[6] 徐招,柳小祥,王萌,等.316L不锈钢双极板表面聚酰亚胺复合涂层的制备与性能研究[J].电镀与涂饰,2019,38(20):1101-1106.
[7] Conradi M,Kocijan A,Kek-Merl D,et al.Mechanical and anticorrosion properties of nanosilica-filled epoxy-resin composite coatings[J].Applied Surface Science,2014,292:432-437.
[8] 王佳平,曲文娟,雷云娜,等.环氧/纳米二氧化硅复合涂层的制备及防腐性能研究[J].电镀与涂饰,2020,39(6):299-305.
[9] 李亚萍,隋智慧,王旭,等.纳米粒子改性水性聚氨酯复合材料研究进展[J].化工新型材料,2021,49(6):1-5.
[10] Peres R N,Cardoso E S F,Montemor M F,et al.Influence of the addition of SiO2 nanoparticles to a hybrid coating applied on an AZ31 alloy for early corrosion protection[J].Surface & Coatings Technology,2016,303:372-384.
[11] 于辉,聂赛,张玉全,等.抽水蓄能机组过流表面超疏水涂层的制备及其阻垢防腐性能研究[J].表面技术,2020,49(8):249-256.
[12] 任猛,李永升,胡歆,等.超疏水纳米复合涂层表面机械稳定性研究进展[J].塑料工业,2019,47(3):8-13.
[13] Groten J,Ruhe J.Surfaces with combined microscale and nanoscale structures:a route to mechanically stable superhydrophobic surfaces?[J].Langmuir,2013,29(11):3765-3772.
[14] 朱耿增,李文静,王晓明,等.KH550改性微米二氧化硅的条件优化[J].中国粉体技术,2020,26(4):33-37.
[15] 张祺,毕成,李耀刚,等.纳米SiO2表面改性及其分散性能研究[J].化工新型材料,2008,36(5):41-42.
[16] 黄燕,游世荣,高乐思.纳米SiO2颗粒改性剂的筛选研究[J].当代化工,2019,48(5):914-917.
[17] 王宏宇,左敦稳,孙玉利,等.微纳米粉体机械复合的配比关系[J].中国有色金属学报,2008,18(6):1089-1093.
[18] Yin X,Yu S,Hu J,et al.Facile fabrication of a durable Ni3S2 nanorod arrays superhydrophobic surface with self-cleaning and degradation properties[J].Journal of Alloys and Compounds,2019,791:864-873.
[19] Liu E,Yin X,Hu J,et al.Fabrication of a biomimetic hierarchical superhydrophobic Cu-Ni coating with self-cleaning and anti-corrosion properties[J].Colloids and Surfaces A Physicochemical and Engineering Aspects,2019,586:124223.
[20] Xu W,Song J,Sun J,et al.Rapid fabrication of large-area,corrosion-resistant superhydrophobic Mg alloy surfaces[J].ACS Applied Materials & Interfaces,2011,3(11):4404-4414.
基金资助
陕西省工业科技攻关项目(2015GY101);陕西省教育厅科研计划项目(15JK1326)。
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