| 海洋环境中芽孢杆菌对聚氨酯清漆涂层分解的影响 |
| |
| 引用本文： | 刘洋,吴进怡,闫小宇,柴柯. 海洋环境中芽孢杆菌对聚氨酯清漆涂层分解的影响[J]. 中国腐蚀与防护学报, 2021, 0(1): 36-42 |
| |
| 作者姓名： | 刘洋 吴进怡 闫小宇 柴柯 |
| |
| 作者单位： | 海南大学材料科学与工程学院;海南大学生命科学与药学院热带生物资源教育部重点实验室 |
| |
| 基金项目： | 国家自然科学基金(51761011,51261006,51161007和50761004)。 |
| |
| 摘 要： | 采用电化学技术、扫描电镜和红外光谱等多种方法研究了海洋环境中芽孢杆菌对聚氨酯清漆涂层分解作用以及对腐蚀行为的影响.结果 表明,在浸泡时间为1h时,芽孢杆菌并没有对聚氨酯清漆涂层产生明显的降解作用.随着浸泡时间的延长,在含有芽孢杆菌的海水中的涂层耐蚀性明显小于在无菌海水中涂层的耐蚀性,表明芽孢杆菌能导致涂层的降解.浸泡初...
|
| 关 键 词： | 芽孢杆菌 聚氨酯清漆涂层 海洋环境 分解 |
Effect of Bacillus flexus on Degradation of Polyurethane Varnish Coating in Marine Environment |
| |
| LIU Yang,WU Jinyi,YAN Xiaoyu,CHAI Ke. Effect of Bacillus flexus on Degradation of Polyurethane Varnish Coating in Marine Environment[J]. Journal of Chinese Society For Corrosion and Protection, 2021, 0(1): 36-42 |
| |
| Authors: | LIU Yang WU Jinyi YAN Xiaoyu CHAI Ke |
| |
| Affiliation: | (School of Materials Science and Engineering,Hainan University,Haikou 570228,China;Key Laboratory of Tropical Biological Resources of Ministry of Education,School of Life and Pharmaceutical Sciences,Hainan University,Haikou 570228,China) |
| |
| Abstract: | The effect of Bacillus flexus on degradation and corrosion behavior of polyurethane varnish coating in marine environment was investigated by means of electrochemical impedance spectroscopy(EIS),scanning electron microscope(SEM)and Fourier transform infrared spectroscopy(FTIR).The results showed that the Bacillus flexus did not exhibit significant effect on the degradation of the polyurethane varnish coating after immersion in Bacillus flexus containing seawater for 1 h.With the extension of immersion time,the corrosion resistance of the coating was significantly lower in Bacillus flexus containing seawater than that in sterile seawater,indicating that Bacillus flexus could cause the degradation of the coating.The coating resistance was about 108Ω·cm2at the initial stage of immersion both in sterile seawater and Bacillus flexus containing seawater.However,the corrosion resistance of the coating dropped to 5.22×106and 5.46×106Ω·cm2after immersion in sterile seawater for 13 and 35 d respectively.As comparison,the corrosion resistance of the coating decreased to 2.16×106and 7.96×105Ω·cm2after immersion in Bacillus flexus containing seawater for 13 and 35 d,respectively.The facts showed that the corrosion resistance of the coating in Bacillus flexus containing seawater decreased larger than that in sterile seawater.SEM observation result showed that after immersion for 35 d in Bacillus flexus inoculated seawater,numerous pores and pulverization signs could be observed of the coating surface.From the result of FTIR,the absorption peaks of N—H bond and C—O bond of coatings after immersion in Bacillus flexus containing seawater were significantly lower than that in sterile seawater,indicating that Bacillus flexus can clearly degrade the polyurethane varnish coating. |
| |
| Keywords: | Bacillus flexus polyurethane varnish coating marine environment degradation |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
