摘要
以十二烷基苯磺酸(DBSA)为乳化剂和掺杂剂,制备了水性聚苯胺(PANI)乳液,X射线衍射分析(XRD)结果表明,DBSA掺杂的PANI分子链伸展性较好;粒径测试结果表明聚苯胺乳胶粒子分布均匀,平均粒径约为250nm。再以水性氟碳(FC)乳液为成膜物制备了水性PANI/FC复合乳液涂层材料,利用电化学交流阻抗谱(EIS)、Tafel曲线(Tafel)、平衡开路电位(OCP)考察了其对Q235低碳钢的防腐蚀性能。结果表明,PANI/FC复合乳液涂层具有较高的阻抗,显著地提高了金属的腐蚀电位(-0.4 V),降低了金属的腐蚀电流密度(10-6A/cm2)。当m(PANI)∶m(FC)=1∶1时,复合涂层对Q235碳钢的防腐蚀性能最好。
Water-based polyaniline （ PANI ） emulsions were synthesized use dodecylbenzene sulfonic acid （ DBSA ） as emulsifier and doping agent, X-ray diffraction （XRD） showed DBSA doped PANI molecular chain had good stretch. Particle size test showed PANI latex particles had uniform distribution and the average particle size was about 250nm. Then make the water-based composited emulsion coatings with PANI emulsion and fluorocarbon emulsion （FC）, the anticorrosion property to Q235 mild steel were discussed by electrochemical impedance spectroscopy（ EIS ）, Tafel polt（ Tafel ） and open circuit potential（ OCP ）. The results showed the PANI/FC composite emulsion coatings had higher impedance and corrosion potential （ -0.4V ） , the corrosion current density was lower （ 10-6A/cm2 ）. The composite coatings had better anticorrosion properties to Q235 mild steel while m（ PANI ） ： m（ FC ） =1：1.
出处
《齐齐哈尔大学学报（自然科学版）》
2012年第3期14-17,共4页
Journal of Qiqihar University(Natural Science Edition)
基金
黑龙江省自然科学基金项目(E201138)
关键词
十二烷基苯磺酸
聚苯胺乳液
氟碳乳液
防腐蚀
涂层
dodecylbenzene sulfonie acid
polyaniline emulsion
fluorocarbon emulsion
anticorrosion
coatings
