含氢硅油复合涂层制备及其金属防腐性能研究.pdf

《含氢硅油复合涂层制备及其金属防腐性能研究.pdf》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、塑料工业第43卷第3期·102·CHINAPLASTICSINDUSTRY2015年3月超疏水rio2／含氢硅油复合涂层制备及其金属防腐性能研究术莫春燕，郑燕升'，王发龙，胡传波，莫倩。(1．广西科技大学生物与化学工程学院，广西柳州545006；2．广西科技大学鹿山学院，广西柳州545616)摘要：采用溶胶凝胶法，以纳米rio：和含氢硅油(PMHS)为原料，通过硬脂酸对纳米rio：表面进行改性，然后将改性后rio：与含氢硅油复合，经机械共混、浸渍提拉、热处理等过程，形成超疏水复合涂层。涂层表面形貌和疏水

2、性采用傅里叶红外光谱仪、扫描电镜、热重分析仪、接触角分析仪等进行表征，结果表明，复合涂层表面具有微／纳米双重粗糙结构，与水的静态接触角为155。，滚动角为8。；采用极化曲线和交流阻抗等电化学法对涂层防腐性能进行表征，复合涂层的腐蚀电位相比裸钢片正移了约0．5V，其腐蚀电流密度从裸钢片的9．15×10。A／cm下降至8．98×10A／cm，减小了2个数量级，而相比纯PMHS的2．67x10～A／cm2，减小了1个数量级，显示了较好的防腐蚀性能。关键词：含氢硅油；微／纳米粗糙结构；超疏水；防腐DOI：10．

3、3969／j．issn．1005—5770．2015．03．016中图分类号：TQ324．21文献标识码：A文章编号：1005—5770(2015)03—0102—05PreparationandAntisepticPropertiesofSuper-hydrophobicandAnticorrosiverio2／PMHSCompositeCoatingMOChun-yan。，ZHENGYan-sheng，，WANGFa—long，HUChuan—bo，MOQian(1．SchoolofBiologic

4、alandChemicalEngineering，GuangxiUniversityofScienceandTechnology，Liuzhou545006，China；2．LuShanCollegeofGuangxiUniversityofScienceandTechnology，Liuzhou545616，China)Abstract：Superhydrophobiccoatingswithpolymethylhydrosiloxane(PMHS)andnano—rio2particlesasraw

5、materialswerepreparedbysol—gelmethod．First，thenano·TiO2particlesweremodifiedbystearicacid．Thenthesuperhydrophobicandanti—corrosivecoatingswereformedwithPMHSandmodifiedrio2aftermechancialmixing，dip—coatingandheattreating．Thesurfacestructureandhydrophobici

6、tyofthecompositecoatingwerecharacterizedbyinfraredspectroscopy，scanningelectronmicroscopy，thermogravimetricanalyzerandcontactangleanalyzer．Theresultsindicatedthatthecompositecoatingwithmicro／nanodoubleroughstructurehadastaticcontactangleof155。andarolling

7、angleof8。againstwater．Thecorosionofthecompositecoatingwasrepresentedbyelectrochemicalmethodssuchaspolarizationcurvemeasurementandalternatingcurrentimpedanceapectroscopy．Theresultsshowedtherio2／PMHScompositecoatinghadagoodanti-corosionperformance：compared

8、withthebaresteelsubstrate，itscorosionpotentialhadapositiveshiftforabout0．5Vanditsc0H-0sionelectriccunentdecreasedfr0m9．15×10—4AVcmto898×10-6AVcm．．whichreducedbyovertwoordersofmagnitude；comparedwiththepurePMHScoating，itscor