海上风力发电机塔筒用湿固化富锌底漆的研制

采用环氧改性湿固化聚氨酯树脂为基体树脂,鳞片状锌粉为防锈颜料,有机膨润土SD-2为防沉剂,研制了一种单组分湿固化富锌底漆。该涂料施工方便,且对底材表面处理要求低,与传统的富锌底漆相比,防腐性能更优,适用于高防腐要求的海上风力发电机塔筒。     

某小型风力发电机玻璃钢塔筒设计计算

根据某小型风力发电机使用要求,从力学角度对其两段式等直径玻璃钢管道塔筒进行设计计算、分析。强度计算时,塔筒安全系数n分别取2、2.5、3、3.5四种情况,并考虑缠绕工艺特点及对其制作材质相关性能的离散影响等因素,计算表明安全系数n宜≥3;刚度校核时,n=3.5其强度虽满足使用要求,但其刚度不能满足塔筒顶部位移(挠度)≤200mm的要求,若需满足或接近位移要求,在内径不变情况下,塔筒厚度需增加2/3以上,其质量将增加71%以上。最后,计算表明塔顶使用位移要求较高;该塔筒可用缠绕、拉挤工艺成型,如缠绕时宜多用小角度成型;并建议塔筒宜采用变直径设计方案。     

海上风电塔筒的防腐涂装及应用实例

针对广东徐闻海上风电项目塔筒的防腐涂装及应用实例,分析了海上风电塔筒所处的腐蚀环境,提出海上风电塔筒的防腐技术方案和施工工艺,并对涂层施工质量的检测和控制进行了探讨。     

风力发电机塔架的涂装

按照设计要求制备用于风力发电机塔架的防腐蚀配套涂料,塔架的筒体内部涂层由环氧树脂聚酰胺富锌底漆和环氧树脂聚酰胺云母氧化铁中涂漆组成,筒体外部涂层由环氧树脂聚酰胺富锌底漆、环氧树脂聚酰胺云母氧化铁中涂漆和丙烯酸脂肪族聚氨酯面漆组成。该涂料体系的防腐涂层可常温固化,厚度达到275μm,防腐蚀寿命可达20年之久,其防腐效果、耐冲击性和耐候性良好。文章同时讨论了涂装工艺过程中易出现的问题及解决办法。     

国内陆上单机容量最大风机吊装成功启动

正10月29日,由国网冀北电力公司负责建设运营的国家风光储输示范工程建设现场传来喜讯,随着首节塔筒稳稳落在基础台上,国内陆上单机容量最大的5兆瓦永磁直驱型风机吊装工作成功启动。这台风机也是目前我国安装作业海拔最高、设备运行方式最为完善、直接投入风场建设运行的最大风机。该风机由风力直接驱动发电机进行发电,主要由塔筒、机舱、发电机及     

风力发电机塔筒防腐蚀涂料通过鉴定

2009年12月21日甘肃省工业和信息化委员会在兰州组织召开了＂风力发电机塔筒防腐蚀涂料＂新产品鉴定会,该项目产品由北方涂料工业研究设计院、大唐甘肃发电有限公司和兰州银装彩虹涂料科技有限责任公司联合研制开发。     

钢顶管工程外防腐技术的研究与应用

钢顶管外防腐因顶进过程涂层摩擦、难以修补而具有独特要求,该文综合比较环氧煤沥青涂层、环氧玻璃鳞片涂层和熔结环氧粉末涂层这三种涂层的性能,价格,施工要求等因素,选用熔结环氧粉末涂层作为南汇支线钢顶管外防腐涂层;经过工程的验证,此材料的选用可以提高钢顶管防腐涂层的质量和适用性,保障工程的安全运行。     

风力发电机塔架用防腐蚀涂料

介绍了风力发电机塔架用防腐蚀涂料配套体系的配方、生产工艺、涂层的性能及施工工序，针对该防腐蚀涂料的使用环境，讨论了基料树脂，固化剂、颜填料的选择。强调了不同环境下使用不同配套体系的重要性。     

环氧涂料在锌银电池涂装中的应用

根据锌银电池涂层的设计要求及工作环境分析,结合环氧涂料的施工要求和性能检测,介绍环氧涂料在锌银电池涂装中的应用。     

炼油厂循环水塔的防腐与涂装

分析了炼油厂循环水塔的腐蚀原因,分别选择PF-01防腐涂料、聚酰胺环氧涂料和环氧玻璃钢,作为砼结构循环水塔长期受水喷淋的砼结构和钢结构以及长期浸水的砼结构的防腐涂层.讨论了循环水塔的防腐施工工艺和质量保证措施,按此方案施工的循环水塔,经过7年的使用后,防腐效果良好.     

Performance evaluation of polyaniline pigmented epoxy coating for corrosion protection of steel in concrete environment

Corrosion protection of mild steel reinforcement offered by a newly developed epoxy based coating system containing inherently conducting polyaniline as one of the pigments has been studied. The synthesis of polyaniline and preparation of epoxy based coating system containing this polyaniline are described here. The corrosion resistant property of epoxy polyaniline system, coated on mild steel was evaluated by various techniques such as electrochemical impedance spectroscopy, potential time studies, cathodic disbondment test, anodic polarization study, salt spray test and chemical resistance test. The corrosion resistance of epoxy polyaniline coating system coated on reinforcement bars embedded in concrete was also studied by an accelerated time to cracking study. The formation of polyaniline was characterized using FTIR, UV, GPC, particle size analyzer and fineness studies. Electrochemical impedance studies reveal that the resistance of the coating decreased initially and then increased due to passivating ability of the polyaniline pigment. Based on the results of different techniques, it is found that epoxy coating with polyaniline pigment is effective in corrosion protection of steel in concrete environment.     

环氧改性水性聚氨酯涂料的合成与性能研究

采用环氧树脂与聚醚、二羟甲基丙酸（DMPA）和甲苯二异氰酸酯（TDI）反应制备水性聚氨酯涂料。研究发现随着所用的环氧树脂的环氧值的降低，改性水性聚氨酯涂膜的硬度和拉伸强度逐渐提高，断裂伸长率则随着降低。选用环氧值为0．44的环氧树脂所合成的改性水性聚氨酯的涂膜硬度达到玻璃硬度0．70；随着环氧树脂添加量增大，涂膜机械性能增加。采用后添加环氧树脂的合成工艺，可制备贮存稳定的水性聚氨酯乳液；凝胶渗透色谱（GPC）分析表明环氧树脂改性水性聚氨酯提高了聚氨酯的分子量。性能测试表明环氧改性水性聚氨酯涂料具有涂膜硬度高、耐水性好和耐溶剂性好等优点。     

Preparation and characterization of cardanol‐based epoxy resin for coating at room temperature curing

Novel organic solvent‐free bio‐based epoxy resin for coating was prepared from cashew nut shell liquid which is one of renewable resources. The epoxy coating was fabricated by the reaction between amine compounds and epoxy cardanol prepolymer (ECP). The drying, physical, and thermal properties of the epoxy were investigated and compared with those of the commercial cashew coating. The ECP was synthesized by thermal polymerization under the various conditions. Based on the FT‐IR analysis, hydroxyl and carbonyl groups were generated, and viscosity increased with increasing heating temperature and time. On the other hand, the NMR analysis showed decrease in the degree of unsaturation in the side group of cardanol. Based on these results, the polymerization of the ECP could be autoxidized in the unsaturated group in the side chains. The drying time until harden dry of the ECP coating took about 2.5 h at room temperature, which is faster than that of the commercial cashew coating. This is because that the curing of ECP coating was based on the prepolymer (i.e., high molecular weight) and crosslink reaction between epoxy and amine groups. The ECP coating was rubbery state due to the flexible side chains of cardanol. Furthermore, the ECP coating improved chemical stability compared with the commercial cashew. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 2468–2478, 2013     

白土精制装置过滤机滤板的腐蚀与防护

对比分析了几种常规涂料体系(如环氧富锌底漆+聚酰胺环氧中涂+聚酰胺环氧面漆及环氧铁红底漆+环氧云铁中涂+聚酰胺环氧面漆)和高性能涂料体系的优劣,最后选用了钛纳米聚合物涂料对白土精制装置中的滤板进行防护,2年多的实际应用表明了其良好的防护效果.     

铁路桥梁支座用环氧富锌防腐涂料耐盐雾性能研究

通过对铁路桥梁支座用环氧富锌防腐涂料耐盐雾性能的研究,制得了具有优异防腐功能的新型环氧富锌涂料。研究了涂膜的PVC、硅烷偶联荆和环氧固化剂对环氧富锌防腐涂料耐盐雾性能的影响。结果表明当涂膜的PVC为42％、干漆膜中锌粉含量为82％,且配方中选用某环氧基硅烷偶联荆和某腰果油改性环氧固化剂时,环氧富锌防腐涂料的耐盐雾腐蚀可达1518h。     

Electrochemical and sorption characteristics and thermal stability of epoxy coatings electrodeposited on steel modified by Zn–Co alloy

The corrosion behaviour, transport properties and thermal stability of epoxy coatings electrodeposited on steel and steel modified by Zn–Co alloys were investigated during exposure to 3% NaCl solution. The electrochemical impedance spectroscopy (EIS), gravimetric liquid sorption measurements and thermogravimetric analysis (TGA) were used. Zn–Co alloys were electrodeposited on steel from chloride and sulphate baths, by different current densities. From the time dependence of pore resistance and coating capacitance of epoxy coating, diffusion coefficient of water through epoxy coating and thermal stability it was shown that Zn–Co sublayer obtained from chloride solution significantly improves the corrosion stability of the protective system based on epoxy coating. Almost unchanged values of pore resistance were obtained over the long period of exposure time, indicating the great stability of this protective system, due to the existence of a passive layer consisting of basic salts.     

Corrosion behaviour of epoxy coatings electrodeposited on galvanized steel and steel modified by Zn–Ni alloys

The electrochemical and transport properties and thermal stability of epoxy coatings electrodeposited on hot-dip galvanized steel and steel modified by Zn–Ni alloys were investigated during exposure to 3% NaCl solution. Zn–Ni alloys were electrodeposited on steel by direct and pulse current. From the time dependence of pore resistance, coating capacitance and relative permittivity of epoxy coating, diffusion coefficient of water through epoxy coating, D(H₂O) and thermal stability, it was shown that Zn–Ni sublayers significantly improve the corrosion stability of the protective system based on epoxy coating. Almost unchanged values of pore resistance were obtained over the long period of investigated time for epoxy coatings on steel modified by Zn–Ni alloys, indicating the great stability of these protective systems, due to the existence of the inner oxide phase layer and the outer layer consisting of basic salts.     

Hygrothermal Aging of Silane-Laced Epoxy Coatings

The impact of silane on the hygrothermal stability of epoxy coatings was investigated by specular neutron reflectivity (NR). By comparing the hygrothermal degradation behavior of neat novolac epoxy coating and corresponding bis[3-(triethoxysilyl)propyl]tetrasulfide-laced epoxy coating, the role of silane was elucidated. Accelerated aging was achieved by exposing the samples to 80°C liquid water. For the pure epoxy coating, degradation occurs at the coating–substrate interface, which makes the coating vulnerable to adhesion failure. For epoxy–silane coating the addition of silane imparts resistance to the interfacial degradation observed in the neat epoxy coating.     

木质地板用环氧树脂粉末涂料研究进展

对木质地板用环氧树脂粉末涂料的研究进展进行分析。主要从三个研究方向即UV固化环氧粉末涂料、双重固化体系和对传统环氧树脂粉末涂料及其固化剂的改性,对木质地板用环氧粉末涂料低温固化技术进行了探讨。     

UV‐curable coatings with nano‐TiO2

Nano‐TiO₂ particles were first milled into butyl acetate or trimethylolpropane triacrylate (TMPTA) to obtain TSB and TST slurries, then embedded into epoxy acrylate to obtain UV‐curable coating. The influence of nano‐TiO₂ particles on the photopolymerization kinetics, tack free time, thermal and optical properties of UV‐curable coatings was investigated. It was found that TST‐based coating had a decreasing but TSB‐based coating had an increasing UV cured rate in comparison with the pristine epoxy acrylate. Nevertheless, the TST‐based coating occupied shorter tack free time, good thermal property and UV absorbance than their corresponding TSB‐based coating. POLYM. ENG. SCI. 46:1402–1410, 2006. © 2006 Society of Plastics Engineers.