表面技术2016，Vol.45Issue(4)：10-16,30,8.DOI:10.16490/j.cnki.issn.1001-3660.2016.04.003
Ni-P-PTFE镀层表面黏液形成菌的污垢特性
Microbial Fouling Characteristics of Slime-forming Bacteria on Composite Coating of Ni-P-PTFE
摘要
Abstract
Objective In order to investigate the influence of the modified surface on microbial fouling, the microbial fouling ex-periment of slime-forming bacteria on the composite coating of Ni-P-PTFE was conducted in this study. Methods Several composite coatings with different properties were prepared by electroless plating on the surface of carbon steel and the parameters such as plat-ing thickness, plating speed and surface energy were obtained. The microstructure of electroless composite plating of Ni-P-PTFE and low carbon was compared by scanning electron microscopy, and the slime-forming bacteria microbial fouling experiments of low carbon steel and the composite coatings samples were conducted. The variation of bacteria amount in the bacterial suspension and weight variation of the samples were documented; The macroscopic and microscopic morphologies of the composite coatings were obtained and analyzed before and after the slime-forming bacteria fouling experiment, with low carbon steel as a control, the rela-tionship between surface energy of the composite coatings and fouling deposit on the coatings was discussed. Results The surface properties of heat exchanger were changed by Ni-P-PTFE coating, as the contact angle increased significantly, and the surface en-ergy of the samples decreased from 49. 16 mJ/m2(carbon steel) to 7. 54 mJ/m2(composite coating steel). The number of slime-forming bacteria in the suspension containing the composite coatings reduced markedly, and the average volume of dirt deposited on the coatings reduced from 12. 1 g/m2(carbon steel) to 2. 3 g/m2(composite coating steel). Conclusion It is reasonable to believe that the Ni-P-PTFE coating on low carbon steel could effectively inhibit the growth of mucus-forming bacteria, and the lower surface energy brought by the coating could reduce the deposition of microbial fouling. The composite coating showed excellent corrosion re-sistance and anti-fouling performance.关键词
黏液形成菌/复合镀层/表面改性/微生物污垢/抗腐蚀性Key words
slime-forming bacteria/composite coating/surface modification/microbial fouling/corrosion resistance分类
化学化工引用本文复制引用
徐志明,姚响,白文玉,刘坐东,王景涛..Ni-P-PTFE镀层表面黏液形成菌的污垢特性[J].表面技术,2016,45(4):10-16,30,8.基金项目
国家自然科学基金资助项目(51476025) Supported by the National Natural Science Foundation of China (51476025) （51476025）
