Coatings of Conducting Polymers for Corrosion Protection of Mild Steel

The investigation of electrochemical behavior of different conducting polymers, polythiophene (PTh), polypyrrole (PPy) and polyterthiophene (PTTh) on a mild steel (MS) electrode were done. Moreover, the combinations of the conducting polymers PTh and PPy was investigated. The synthesis of all polymeric coatings was done by the cyclic voltammetry technique. The electrochemical impedance spectroscopy (EIS) measurements were used to evaluate the corrosion performance of coated mild steel by different polymers in 0.5 M of different acid solutions (HCl, HClO₄, H₂ C ₂ O ₄, H₃PO₄ and HNO₃). The protection of all polymeric coatings against corrosion of the substrate was promising and the bilayer coating PPy/PTh gave the best protection efficiency in all used acids. The order of efficiency for the different coatings in HCl and HNO₃ solutions was MS/PPy/PTh > MS/PPy > MS/PTTh > MS/PTh but the order in HClO₄, H₃PO₄ and H₂ C ₂ O ₄ solutions was MS/PPy/PTh > MS/PTTh > MS/PPy > MS/PTh.     

Characterization and Corrosion Protection Ability of Conducting Polymer Coatings on Mild Steel in Acid Media

Silicon - Electrochemical polymerization of polythiophene (PTh), polypyrrole (PPy) and polyterthiophene (PTTh) were investigated on mild steel (MS) electrode. Multilayered coating, consisting of...     

管道防腐环氧粉末涂料的研制

结合我国的原材料市场,采用国产原料和常规粉末涂料配制工艺,筛选出最佳的涂料配方,研制成管道防腐环氧粉末涂料,其各项性能优异,完全可满足管道防腐的要求。     

环氧树脂防腐涂料的研究

利用丙烯酸、甲基丙烯酸甲酯、甲基丙烯酸丁酯与苯乙烯的共聚方法,合成一种新型水性防腐涂料。反应中加入环氧有机硅,使得这种涂料兼具有有机与无机涂料的高硬度、高耐磨、高附着力等优点。     

环保型液态环氧树脂防腐蚀涂料的研制

采用改性树脂改变一种低味无毒的溶剂的内聚能,制成“环保型”液态环氧树脂防腐蚀涂料,讨论了改性树脂对无毒溶角环氧树脂的影响,以及助剂对涂料性能的影响等。     

Studies on Biocide Free and Biocide Loaded Zeolite Hybrid Polymer Coatings on Zinc Phosphated Mild Steel for the Protection of Ships Hulls from Biofouling and Corrosion

Biocide free and biocide loaded Zeolite epoxy coatings were formulated and covalently linked to diglycidyl ether bisphenol-A type epoxy resin which acts as a base material. These formulations were applied over the zinc phosphated mild steel specimens by a brushing method to give a thickness of 200 ± 10 μm. The effect of biocide on the corrosion and fouling resistance properties were evaluated by Thermo Gravimetric Analysis (TGA), polarization, electrochemical impedance and antifouling testing. The experimental evidence reveals that the linkage of biocide loaded Nano Zeolite has tremendous potential in resisting corrosion and fouling which is ideally required for marine environments and quite superior to the biocide free Zeolite coating. The purity and the structure of these coatings were examined by an FTIR spectral study.     

Alternating Multilayer Structural Epoxy Composite Coating for Corrosion Protection of Steel

Epoxy composite coatings filled with fillers have been used extensively as anticorrosion materials. In this study, an alternating multilayer structure is designed to obtain multifunctional epoxy resin composite coating based on stepwise coating method via adding graphene and α‐alumina. Their mechanical properties, thermal conductivity, dielectric and anticorrosion properties are characterized. The toughness and the thermal conductivity clearly increase, while the dielectric properties decrease approximately to zero when the filler mass fraction increases from 0.00% to 0.15%. The whole corrosion process is controlled by electrochemical reaction, and the fillers effectively block the corrosive medium, thus improving the anticorrosion performance of the composite coating.     

盐雾对环氧涂层防腐蚀性能影响的电化学研究

制备了新型环氧富锌、环氧铁红、环氧云铁3种有机涂层材料。在此基础上，采用交流阻抗技术，对各种环氧涂层在盐雾前后进行了阻抗谱测定，并研究了涂层在盐雾环境中的失效机理。结果表明：3种涂层材料在盐雾实验后，阻抗圆直径均大幅减小，涂层耐腐蚀性能较盐雾前降低。盐雾实验后各涂层的耐腐蚀性能由强到弱依次是环氧云铁、环氧铁红、环氧富锌。通过对盐雾实验前后涂层阻抗谱的分析，比较了几种涂层材料的性能，提出了可能的腐蚀破坏机制。     

牺牲型水性环氧防腐涂料的研究

采用对氨基苯甲酸对环氧树脂部分环氧键进行开环引羧，再加安全型皂化剂和活性分散剂皂化分散处理制备水性环氧树脂乳液。研究了鳞片状铝锌合金颜料与上述乳液复配的牺牲型水性环氧防腐涂料的配方。通过常规性能测试、电极电位监测、盐雾实验和交流阻抗测试，进行了活性分散剂、安全型皂化剂、牺牲颜料和颜料体积浓度的优选，研制出双包装、室温固化、环保和防腐性能优异的牺牲型水性环氧防腐涂料。     

环保型油田管道内壁纳米环氧防腐涂料的研究

油田管道腐蚀和结垢造成了巨大的损失，防腐、防结垢比较困难，而且涂料在热镀锌管上难以附着，为此进行了大量的研究工作，首先，通过合成固化剂，解决了涂料在热镀锌管上附着力差的问题；其次，合理选用颜填料以及纳米SiO2和纳米TiO2．同时选用有效降低表面张力的助剂，使表面结垢得到了比较好的控制。另外，通过控制混合溶剂的挥发速率，使产品能较好地适应长管道、小直径的特殊施工工艺及设备，并使产品施工固体分高。施工产生的漆雾少．具有很好的环保性能。     

双极性涂料与腐蚀防护

双极性涂层(底漆具阴离子交换膜性质,面漆具阳离子交换膜性质)源于半个多世纪以来腐蚀防护的研究成果。现在研发的双极性涂料,会给市场提供一个全新的高性能重防腐涂料。双极性涂料的概念也将有助于研发各种新型防腐涂料。     

Corrosion Protection of Mild Steel in Acid Solutions Using Red Cabbage Dye

Red cabbage dye (RCD) and its inhibitory effect on the corrosion of mild steel in 1 N HCl and 1 N H₃PO₄ was investigated by weight loss and electrochemical methods. RCD was a good inhibitor for mild steel corrosion in acid solutions, affecting anodic and cathodic reactions. The inhibition efficiency increased with RCD concentrations, with more pronounced effects observed in HCl. The effect of temperature on corrosion inhibition was studied and kinetic activation parameters were calculated and discussed. The inhibition mechanism of RCD on the mild steel surface was related to the dye make up and behavior in acid solutions.     

富锌环氧涂层的防腐蚀研究

通过对研究磷铁粉，硅烷偶联剂处理金属基体对富锌环氧涂层的影响，制备出在金属基体上具有良好附着力和防锈力的富锌环氧涂层，并研究了富锌环氧涂层的防蚀机理及硅烷偶联剂的作用机理。     

改性环氧粉末涂层在酸性油气田管道内防腐的应用

结合集输管道使用环境和特点,提出了新型抗H2S、CO2、Cl-防腐层的设计。涂层经高温高压浸泡试验后外观及附着力均无变化。     

碳钢表面TiO2涂层耐蚀性和耐高温氧化性的研究

用溶胶 -凝胶法在碳钢表面制备TiO2 涂层。考察了络合物类型及其用量、水与乙醇用量对涂层耐蚀性( 10 %H2 SO4介质 )和耐高温 ( 65 0℃ )氧化性的影响。用正交设计法优选出涂层溶胶的组成与配比。结果为乙醇∶络合物M∶水∶钛酸丁酯 =47∶0 75∶3∶1,涂层的腐蚀速率和氧化速率分别为 1 480g/ (m2 ·h)和 6 610 (g/m2 ·h)     

水性环氧涂料防腐性能影响因素的研究

采用水性环氧树脂与水性胺类固化剂作为成膜物,添加颜填料与助剂制备水性防腐涂料。讨论了水性环氧树脂、水性环氧固化剂种类、环氧/胺氢的物质的量比、防锈颜料的种类及用量对水性环氧涂料防腐性能的影响。制备出耐盐雾性能达500 h以上的水性环氧防腐涂料,超出了HG/T 4759—2014中耐盐雾300 h的要求。     

环氧改性丙烯酸树脂防腐涂料的研制

采用特殊工艺，选择适宜的苯乙烯、丙烯酸单体、硅烷偶联剂及环氧树脂，制备环氧改性丙烯酸树脂，并配制成性能优良的防腐涂料。     

Corrosion Protection of Mild Steel by Formation of Iron Oxide Polybithiophene Composite Films

Polybithiophene (PBT) was freshly electrodeposited on platinum (Pt) and steel electrodes using cyclic voltammetry from 2,2-bithiophene (BT), electrolyte and acetonitrile (AC). The electrolytes used were LiBF₄, LiClO₄, LiCF₃SO₃, Bu₄NBF₄, Bu₄NClO₄, or Bu₄NCF₃SO₃. Black to red colored PBT films with metallic lustre were electropolymerized on Pt and steel electrodes with good adherence. The electrochemical properties and the surface morphology of the deposited PBT film depend on the type of ions used during the electropolymerization. It was found that the steel surface was covered with Fe _x O _y –PBT composite. The results are discussed on the basis of the structural and the electrochemical properties of the electrolyte ions. The presence of PBT–iron oxide composite on the steel surface causes a shift of the pitting potential (E _pit) in the positive direction, indicating the inhibitive effect of PBT–Fe _x O _y composite on the chloride pitting corrosion.     

环氧煤沥青缓蚀涂料的研制

在环氧煤沥青的底漆和面漆中分别加入自行合成的胺类缓蚀剂后,采用交流阻抗和盐雾试验等方法测试的结果表明：涂层的耐蚀性大为提高,涂层的针孔电阻值提高２￣３个数量级,并且涂层的物理机械性能不受影响。     

水性聚苯胺防腐涂料研究

将聚苯胺水性微乳液和环氧树脂共混作为底漆、与环氧树脂面漆复合制成防腐涂料，采用开路电位法评价复合涂层的防腐性能。结果表明，合成聚苯胺水性微乳液所使用的酸介质、聚苯胺乳液的用量和腐蚀介质等对涂层的防腐性能均有影响。以十二烷基苯磺酸(DBSA)为酸性介质合成的聚苯胺水性微乳液，当其用量为50％时，复合涂料的防腐性能最佳，与裸露钢板相比，该复合涂层的平衡开路电位可提高245mV左右。该复合涂料不使用任何有机溶剂，是一种环境友好型绿色涂料。