低氟含量低表面能自清洁氟碳涂料的研究

以氟单体和丙烯酸酯类单体通过聚合物的分子结构设计，合成了一类总氟含量不超过12％的低氟含量的含氟丙烯酸树脂，所制备的氟碳涂料的涂层的表面能低，具有自清洁功能。分析了该涂层中极性与非极性官能团的分子取向机理，测定了纯水水珠在不同含氟单体均聚物和共聚物清漆漆膜上以及在含氟丙烯酸树脂涂层上的接触角，探明了含氟丙烯酸树脂涂层的总氟含量与表面能的关系、含氟官能团在涂层中的分布，探讨了低氟含量的含氟丙烯酸树脂涂料的涂层自清洁机理。     

室温固化型不粘涂料的研究

研究了双组分室温固化型低表面能氟涂层的配合技术,所用材料的物化特性;讨论了基料、填料、助剂等对氟涂料的影响机理。实验结果表明:氟涂层的表面能为10.6 mJ/m2,疏水角可达到122°,附着力为1级、硬度为4H,同时涂层具有耐腐蚀和耐化学性等性质。     

氟树脂防腐蚀涂层涂装工艺的研究进展

综述了氟树脂涂料的种类和基本性能、氟树脂改性的方法；氟树脂防腐蚀涂层涂装工艺中的金属表面预处理、涂层配方设计及涂装方法等方面的研究进展；着重阐述了梯度涂层共混改性技术。     

高温防腐涂料与热障防腐涂层技术的研究进展

综述了国内外耐高温防腐有机、无机和有机-无机复合涂料和热障防腐涂层技术的研究与应用的新进展,介绍了有机硅树脂、有机氟树脂、无机硅酸盐基涂料、无机磷酸盐基涂料、陶瓷涂层和搪瓷涂层的发展现状和前景.     

耐沾污涂料

耐沾污复合涂料、带该涂层的产品及其制备;具有含侧全氟聚醚基的反应性氟化共聚物的涂料组合物;抗污聚氨酯涂料;抗污性光学硬涂层;一种超耐候、抗污涂料用的氟硅改性丙烯酸酯乳液……     

含氟聚合物及其涂料

带有防霜冻涂属的模具及其制备方法；含调聚物的氟聚合物涂料；用于雪覆盖地区具有高耐久性的含可固化氟聚合物的涂料组合物；与金属附着力好的氟聚物层压底漆涂层及涂料；表面改性用氟硅烷缩合产物的制备；……[编者按]     

高性能氟碳外墙涂料的研制

采用氟碳树脂乳液制备具有超耐候性、耐污染、涂层透气性好、不易剥落和低VOC含量的高性能氟碳外墙乳胶漆.研究了氟含量对涂层耐候性的影响及涂料的PVC对涂层性能的影响.     

常温交联型氟涂料拼合用丙烯酸树脂的研制

在氟涂料中拼合一定量含羟基丙烯酸树脂，可有效提高涂层的耐溶剂性和耐沸水附着力，以扩大常温交联型氟涂料的应用范围。介绍了拼合用丙烯酸树脂的配方及其制法。讨论了丙烯酸树脂中的软硬单体配比、羟基含量，以及丙烯酸树脂与氟树脂的配比对涂层性能的影响。     

环保型含氟单体在流平剂中的应用

涂料的流平性能对于涂层的最终性能有着重要的影响,添加含氟流平剂是解决涂料缩孔、桔皮、缩边、浮色、发花等缺陷的重要途径。长碳氟链(≥8)单体流平剂在涂料中具有极佳的表面活性,由于其持久性、毒性和生物累积性已经逐渐被多国限制使用,因此,基于环保型含氟单体的流平剂得到了广泛的关注。综述了环保型含氟单体短碳氟链和"弱位点"单体的分子设计及其在涂层含氟流平剂中的应用。     

干膜润滑剂

氟树脂涂层(尤其是聚四氟乙烯涂层)的特性可以举出许许多多,但其中最具有代表性的还是低摩擦特性和不粘特性.关于不粘特性,本(?)已有叙述.本文只谈低摩擦系数的利用,即用作干膜润滑剂的氟树脂涂料。     

冰乙酸储运设备联合涂层结构及材料的研究

采用联合涂层结构,在碳钢基体上,用耐冰乙酸的铝、不锈钢等金属涂层作为底层涂层,用AT-1涂层作为面层,经一年的浸泡试验,筛选出以铝涂层作为底层涂层、以AT-1涂层作为面层涂层的联合涂层,联合涂层无鼓泡、变色现象,浸泡液冰乙酸颜色无变化。     

Ni-Al2O3复合镀层的腐蚀摩擦学性能研究

用电镀方法制得Ni-Al2O3复合镀层,研究电镀Ni-Al2O3复合镀层的结构以及其硬度、耐磨性、抗腐蚀性与电镀电流密度的关系。结果表明:复合镀层的显微硬度比纯镍镀层硬度成倍提高,复合镀层耐磨性比镍镀层提高20%以上;抗腐蚀性提高70%以上。X射线衍射结果显示,复合镀层由Ni及非晶Al2O3组成,Ni相为面心立方晶体结构,晶格常数为0.353nm,小于纯镍镀层,晶粒尺寸为23.8nm,大于纯镍镀层。     

锌铝合金涂层与有机涂层的耐盐雾腐蚀性能对比研究

研究了锌铝合金涂层与有机涂层的耐盐雾性能,在防腐涂层体系中,锌铝合金涂层的耐盐雾防腐性能好于有机涂层;而在防腐防污涂层体系中由于防污漆含有铜,锌铝涂层与铜离子可形成原电池加速腐蚀,锌铝合金涂层的防腐性能差于有机涂层体系。     

硬质合金镀镍层结合性能的研究

研究了在YT5硬质合金上镀镍工艺和镀层的氢等离子体处理工艺,在YT5上得到了质量较好的镍镀层.试验表明:镀前预处理对提高镀层质量起重要作用,氢等离子体处理改变了镀层的表面形态,在镀层和基体之间形成扩散层,使基体与镀层之间的结合由机械结合变成冶金结合,提高了镀层与硬质合金的结合强度.     

导电钛白粉的制备及其在防静电涂料中的应用

以氯化法金红石型钛白粉浆料为包膜原料,采用正交试验及单因子试验等方式,以产品电阻率为主要指标,考察了SnO₂包膜量、pH、包膜温度及包膜时间等包覆ATO的相关工艺条件,确定了导电钛白粉的最佳制备工艺。采用该工艺制备的导电钛白粉配制的水性环氧导电涂料,其涂膜性能与进口导电钛白粉制备的涂膜相当,具有很好的应用前景。     

氟碳涂料国内外现状及发展趋势

综述了国内外氟碳涂料的研究和应用现状,重点介绍了水性氟碳涂料、高固体分涂料、粉末涂料、防粘耐磨氟涂料、防反射膜用氟树脂涂料等几种高性能、环保型的新型氟碳涂料。     

A general compartment‐based population balance model for particle coating and layered granulation

In this work, a general multidimensional population balance (PB) model is developed to predict the coating volume distribution on polydisperse particles as a function of time during particle coating in a paddle mixer. The model adopts a compartmental approach to account for coating variation caused by particle flow heterogeneity. Simulations show that for a realistic range of seed particle size polydispersity and coating mass applied, the coating volume distribution depends on the growth rate exponent and seed particle size distribute on, with the coating volume coefficient of variance (CoV) approaching an asymptotic value as the coating‐to‐particle volume ratio increases. These effects cannot be predicted by simpler one‐dimensional models. However, the full two‐dimensional PB and simpler one‐dimensional models such as Mann's equation do predict similar sensitivity of coating volume CoV to the variation in the compartment model parameters, i.e., to changes in the particle mixing behavior in the vessel. © 2011 American Institute of Chemical Engineers AIChE J, 2012     

Coating Mass Dependence of Soot Aggregate Restructuring due to Coatings of Oleic Acid and Dioctyl Sebacate

Soot particles in the atmosphere can be coated with organic or nonorganic material, which may affect particle morphology and optical properties. The effect of the mass of coating on the morphology of soot particles was studied using oleic acid and dioctyl sebacate (DOS) coatings. A wide range of coatings were used, with up to 10 times as much coating as the mass of the soot. It is shown that as the coating mass increases the degree of collapsing increases until the coating is so large that the soot particle becomes completely contained within a spherical droplet of the coating material. Higher amounts of coating will not cause further collapse of the particle. The degree of collapse is also a function of the initial size of the soot particle but was independent of the coating materials tested, which have similar surface tensions. A model is presented to predict the change in mobility diameter as a function of coating mass ratio. The effect of coating mass on effective density, shape factor, and fractal dimension is also reported.

Copyright 2013 American Association for Aerosol Research     

Ni-ZrO2复合镀层的腐蚀摩擦学性能研究

用电镀方法制得Ni-ZrO2复合镀层,研究电镀Ni-ZrO2复合镀层的结构以及其硬度、耐磨性、抗腐蚀性与电镀电流密度的关系。结果表明：复合镀层的显微硬度比纯镍镀层硬度成倍提高,复合镀层耐磨性比镍镀层提高20％以上;抗腐蚀性提高70％以上。X射线衍射结果显示,复合镀层由Ni及非晶ZrO2组成。Ni相为面心立方晶体结构,晶格常数为0．353nm,小于纯镍镀层,晶粒尺寸为23．8nm,大于纯镍镀层。     

Microstructure,mechanical and tribological properties of WC-WCoB coating

A new kind of WC-based coating with superhard WCoB compound as the binder was fabricated by the high velocity oxy-fuel spraying of WC-WB-Co powder. The microstructure, mechanical and tribological properties of the WC-WCoB coating were investigated, together with those of the conventional WC-Co coating for comparison. The results demonstrated that the WC-WCoB coating has simultaneously improved hardness and fracture toughness, and thus remarkably decreased wear rate as compared to the conventional coating. The enhanced tribological properties of the WC-WCoB coating are attributed to the low plastic deformation and the resultant inhibition of the micro-ploughing wear and the increased fracture toughness and interfacial bonding, which can reduce the amount of large cracks. Moreover, the high intrinsic hardness of WC and WCoB, as well as their good interfacial bonding, are more effective in resisting against wear as compared with the conventional coating.