聚苯胺导电涂料的制备及性能研究

本研究采用氧化聚合方法制备了具有高电导率的导电聚苯胺。并以这种聚苯胺为导电填料,以丙稀酸为成膜物,制备了一种电导率为10-8～10-5s/m的导电涂料。并研究了聚苯胺含量对导电涂料电导率及涂膜性能的影响。     

聚苯胺防腐导电涂料的制备研究

采用氧化缩聚合成法制备了无机峻掺杂的低成本、高导电率的导电聚苯胺，以其为导电填料，以环氧树脂为成膜物，制备出一种电导率在10^-8～10^-5S／m范围内的新型导电涂料。研究了聚苯胺含量对涂膜的电导率、物理性能以及耐化学品性的影响，同时采用交流阻抗曲线探讨了涂料对金属基材的防腐蚀行为。     

导电聚苯胺在防腐蚀涂料中的应用

介绍了活性聚合物聚苯胺的结构、导电机理以及其防腐蚀机制。讨论了其防腐蚀效果和应用前景。     

掺杂型聚苯胺导电涂料的研究

研制了一种以环氧树脂为基料,掺杂型聚苯胺为导电填料的导电涂料。研究了导电涂料中掺杂型聚苯胺以及聚酰胺类固化剂对导电涂料性能的影响,并对导电涂料的电阻率、柔韧性及附着力等性能进行了测试。结果表明,该涂料ρ为20~25Ω.cm,具有优良的导电性,且涂膜的柔韧性达到1.0mm。     

炭系混合填料在导电涂料中应用的研究

用炭系混合填料制备了面状发热体用的在安全电压以下具有明显电热特性的导电涂料。发现，在相同填料含量下，混合填料的涂层较单一填料涂层导电性高，其原因在于不同空间构型的导电粒子之间配合更有利于在涂层中形成的三维导电网络。     

聚苯胺的制备及其在涂料中的应用

导电聚苯胺有优异的导电性能、化学稳定性和防腐蚀性能,具有巨大的潜在实用性价值介绍了导电聚苯胺的国内外研究现状、防腐蚀机理、制备方法及其在涂料中的应用。     

导电涂料的研究及进展

本文概述了导电涂料的基本组成及其选择原则。讨论了导电机理及影响导电性的因素。介绍了导电涂料的开发现状与应用进展，并指出了导电涂料研究的主要方向。     

几种酸掺杂聚苯胺-聚乙烯醇复合导电涂料的制备

采用聚乙烯醇为基质材料,以盐酸、十二烷基苯磺酸、氨基磺酸水溶液掺杂,制备了聚苯胺-聚乙烯醇(PANI-PVA)复合导电涂料。研究了PANI与PVA质量比、酸用量、氧化剂用量、反应时间以及膜干燥温度等因素对涂料膜电导率的影响。结果表明:当PVA质量分数为40%、成膜干燥温度为80℃时,PANI-PVA涂料膜的电导率最大。而且当cHCl=0.5mol/L、反应时间为6h、过硫酸铵与苯胺摩尔比为1.0时,所得HCl-PANI-PVA膜的电导率达最大,为15.0S/cm;当cDBSA=1.0mol/L、反应时间为8h、过硫酸铵与苯胺摩尔比为2.0时,所得DBSA-PANI-PVA膜的电导率达最大,为7.1S/cm;当cNH2SO3H=1.0mol/L、反应时间为6h、过硫酸铵与苯胺摩尔比为2.0时,所得NH2SO3H-PANI-PVA膜的电导率达最大,为2.0S/cm。在这几种酸掺杂的PANI-PVA复合导电涂料中,HCl-PANI-PVA膜的电导率最大。     

涂料用导电玻璃纤维填料的制备

采用化学镀方法在玻璃纤维上沉积金属镀层,制得镀金属的导电玻璃纤维,用作导电涂料的填料。简述镀镍－磷、镀铜－磷和镀镍－铜－磷玻璃纤维的工艺流程。讨论了化学镀的反应条件对导电玻璃纤维性能的影响。     

高效脱漆剂的制备和腐蚀性研究

以氯代烷为主溶剂、烷基醇为助溶剂、有机酸为促进剂、含氮和硫的有机化合物为缓蚀剂合成了一种新的脱漆剂。分别研究了氯代烷、有机酸的含量对脱漆剂脱漆效果的影响以及不同缓蚀剂对各种基材的缓蚀能力。结果表明,当氯代烷的质量分数为70%、有机酸的取值范围为8%~10%、以含氮和硫的有机物为缓蚀剂时,所得的脱漆剂比市售的脱漆剂效果更好、腐蚀性更低。     

水性集装箱外面漆的制备及性能研究

以水性丙烯酸和聚氨酯树脂作为成膜物质,制备出一种有较高耐老化和耐腐蚀性能的集装箱外用面漆.对影响面漆耐蚀性能的一些因素进行了研究,如树脂和颜料类型,消泡剂种类,分散剂种类及用量,以及纳米浆料添加量等.结果表明,当苯丙乳液与聚氨酯乳液以1:2的质量比复配作基料,选用浓缩型分子级消泡剂E,嵌段共聚物分散剂D用量为0.6%,...     

防腐蚀涂料综述（上）

介绍了我国防腐蚀涂料的品种、生产状况、存在问题及解决对策,并提出水性环氧涂料、粉末涂料、玻璃鳞片涂料的开发应用前景。     

水性锈转化涂料的制备及性能

采用苯丙乳液与改性苯丙乳液共混作为成膜物质,以单宁酸为转锈剂,柠檬酸为配位剂,焦性没食子酸为转锈促进剂,再加入成膜助剂、有机胺类缓蚀剂、渗透剂等,制备了一种可应用于带锈钢材的水性锈转化涂料。通过正交试验和单因素试验确定了涂料的最优配方为:成膜物质65%,转锈剂5%,转锈促进剂2%,缓蚀剂0.6%,渗透剂2%,配位剂0.5%,成膜助剂1.6%,蒸馏水余量。采用塔菲尔极化曲线测量、中性盐雾试验和盐水浸泡试验考察了漆膜的耐蚀性。结果表明,所制水性锈转化涂膜可耐盐雾96 h,耐盐水浸泡168 h,且耐酸性较强,在pH为2的3.5%NaCl溶液中有保护作用。与两款市售涂料相比,该自制水性锈转化涂料具有更好的耐蚀性。     

重防腐涂料涂装后涂膜主要弊病分析

对重防腐涂料涂装后形成的流挂、针孔、干喷、缩孔、裂纹、发白等6种漆膜弊病的原因进行了分析,提出了预防措施和修补办法.     

桥梁钢结构防腐蚀涂层配套和涂层使用寿命

介绍了桥梁钢结构防腐涂层设计的相关依据:ISO12944-5:2007、BS EN ISO14713:1999和JT/T722-2008。从防腐方法的选择、钢结构设计、涂层配套方案及膜厚确定、涂装管理、涂装设计以及完善的涂层维护计划的建立等方面对影响桥梁钢结构防腐效果的因素进行了探讨。     

A novel soluble PANI/TPU composite doped with inorganic and organic compound acid

A series of novel soluble and thermoplastic polyurethane/polyaniline (TPU/PANI) composites doped with a compound acid, which was composed of an organic acid (p‐toluene sulfonic acid) and an inorganic acid (phosphoric acid), were successfully prepared by in situ polymerization. The effect of aniline (ANI) content, ratio of organic acid/inorganic acid, and different preparation methods on the conductivity of the TPU/PANI composites were investigated by using conductivity measurement. Lithium bisoxalato borate (LiBOB) was added to the prepared in situ TPU/PANI to coordinate with the ether oxygen groups originating from the soft molecular chains of TPU, and thus the conductivity of the composites was further enhanced. The molecular structure, thermal properties, and morphology of the TPU/PANI composites were studied by UV–visible spectroscopy, differential scanning calorimetry, and scanning electron microscopy, respectively. The results show that the in situ TPU/PANI composites doped with the compound acid can be easily dissolved in normal solvents such as dimethylformamide (DMF) and 1,4‐dioxane. The conductivity of the TPU/PANI composites increases with the increase of the ANI content, in the ANI content range of 0–20 wt %; however, the conductivity of the composites reduces with further increment of ANI content. The conductivity of the TPU/PANI composites prepared by in situ polymerization is about two orders of magnitude higher than that prepared by solution blending method. LiBOB can endow the in situ TPU/PANI composites with an ionic conductivity. The dependence of the conductivity on temperature is in good accordance with the Arrhenius equation in the temperature range of 20–80°C. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010     

钢铁表面导电聚苯胺膜的制备

对Q195冷轧钢进行氟铁酸盐转化膜预处理,然后通过原位聚合反应在其表面成功制备墨绿色导电聚苯胺膜.采用扫描电镜和红外光谱分别对聚苯胺膜层的表面形貌的结构进行了表征,并通过极化曲线、中性盐雾试验对其耐腐蚀性进行了研究.结果表明,聚苯胺膜处于中间氧化态,导电聚苯胺膜使钢铁的腐蚀电位正移了49 mV,使钢铁的耐蚀性能明显提高...     

导电涂料的作用机理及应用

导电涂料的应用日益广泛,通过阐述导电涂料的作用机理,介绍了各种导电涂料的最新研究进展。     

Preparation of polystyrene/polyaniline core/shell structured particles and their epoxy‐based conductive composites

Polyaniline (PANI) was synthesized by chemical oxidative polymerization of aniline (ANI) in the presence of sulfonated crosslinked polystyrene (SCPS) particles in neutral water. The polymerization of ANI occurred preferentially on the surfaces of the SCPS particles, resulting in core/shell structured SCPS/PANI particles. The conductivities of the SCPS/PANI particles increased with increasing degree of sulfonation of the SCPS and with increasing ANI/SCPS weight ratios in the reactants. Conductive epoxy‐based composites were prepared by curing the blend of SCPS/PANI particles and epoxy resin with an aromatic amine curing reagent, indicating the core/shell structured particles were stable, to some extent, to alkaline environments, which will be of significant importance for the practical application of PANI in many cases. Copyright © 2006 Society of Chemical Industry