环氧—聚氨酯互穿聚合物网络导电涂料

研究了以环氧－聚氨酯互穿聚合物网络（ＥＰ－ＰＵＩＰＮ）为基料,镀银铜粉为导电填料的导电涂料。用扫描式电子显微镜（ＳＥＭ）观察了不同配比ＥＰ－ＰＵＩＰＮ的两相相容性,用差示扫描量热法（ＤＳＣ）测定了ＩＰＮ的玻璃化温度。讨论了ＥＰ－ＰＵＩＰＮ的结构及选择,镀银铜粉的粒度及含量对导电涂料的电阻率和使用性能的影响。试验表明,９０／１０ＥＰ－ＰＵＩＰＮ作为基料,镀银铜粉的含量为８０％、粒度为４００目,涂膜的电阻率低,使用性能好。     

以膨胀石墨为填料的防静电涂料的研究

探索了利用膨胀石墨蠕虫作为填料,以聚氨酯清漆作为粘结剂的新型涂料的防静电性能。分析了膨胀石墨蠕虫的膨胀体积、填料含量、涂层厚度与电阻率的关系。实验表明：该种涂料是一种优良的防静电和导电材料,防静电性能优于传统石墨粉掺杂的涂料。     

Anticorrosion efficiency of zinc-filled epoxy coatings containing conducting polymers and pigments

The dependence of the corrosion-inhibiting properties of zinc-filled organic coatings on the nature of the conducting polymers and conducting pigments added and on the pigment particles’ surface coating with conducting polymer layers were investigated. The following materials were selected to examine the corrosion-inhibiting properties of the conducting polymers: polyaniline phosphate (PANI), polypyrrole (PPy), natural graphite, and carbon nanotubes. Conducting pigment combinations for application in coating materials were formulated by applying pigment volume concentrations (PVC) of 0.3%, 0.5% and 1%, which were completed with Zn dust to obtain pigment volume concentrations/critical pigment volume concentrations (PVC/CPVC) = 0.64. Such conducting pigment/zinc dust combinations represented corrosion inhibitors to be used as ingredients in protective coatings. Solvent-based 2K epoxy resin based coating materials containing the corrosion inhibitors so formulated were prepared to examine their anticorrosion properties. The pigmented coatings were subjected to laboratory corrosion tests in simulated corrosion atmospheres and to standardized mechanical resistance tests. The protective coatings so obtained exhibited a higher efficiency than coating materials containing zinc dust alone. The coating material containing carbon nanotubes at PVC = 1% and the coating material containing graphite coated with polypyrrole (C/PPy) at PVC = 0.5% emerged as the best zinc-filled coating materials with respect to their corrosion-inhibiting efficiency. Treatment with the conducting polymers had a beneficial effect on the coating materials’ mechanical properties.     

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。     

SnO_2-Sb_2O_3-TiO_2导电粉末及其导电涂层的制备

以TiO2为基体,采用化学共沉淀技术制得复合导电粉末。利用正交试验得到优化的制备条件:复合反应体系组成为m(TiO2)∶m(SnCl4)∶m(SbCl3)=25∶15∶1,pH值为1.5,水解温度60℃,沉积SnCl4和SbCl3的水解产物于TiO2粒子表面,得到的包覆物在700℃下焙烧30 min,制备的复合导电粉末体的电阻率为77Ω.cm,粒径≤200 nm。将导电粉末与粘结树脂经球磨分散制得具有良好流动性的涂布液,在铝箔上能够制备得到电阻率低于108Ω.cm的导电涂层,满足制备有机光导体的要求,涂层表面平滑,无凹凸等缺陷。     

紫外光固化法制备漆酚/石墨复合导电涂料的研究

以漆酚为基体,石墨为导电填料,利用紫外光固化法制备漆酚/石墨复合导电涂料,讨论了涂膜中石墨的含量以及固化方式等对漆膜导电性能的影响,并测试了漆膜的常规物理机械性能。结果表明,在紫外光辐照下,漆酚/石墨混合物涂膜可快速固化。当石墨含量达到25%(wt%)时,漆膜的表面电阻率为442Ω.cm,硬度为6H,附着力2级,冲击强度为45kg.cm。     

导电涂料的研制

为了获得性能优良的导电涂料 ,采用对比试验和正交试验的方法对导电涂料进行了研究 ,分别对导电涂料的电阻、硬度、耐冲击强度、柔韧性等性能进行了测试 ,经过试验 ,确定了无机导电涂料的最佳配方为 :石墨 10 0g ,铅酸钡 10g ,三氧化二锑 5g ,二氧化钛 35g ,碳化硅 10g ,硅酸盐溶胶 170g。以此配方研制出了一种成本较低、生产工艺简单、具有良好的导电、导热性能的无机导电涂料。     

Plasma preparation of carbon black used in conductive coatings

A conductive coatings was prepared using a kind of spherical carbon black (CB) as conductive pigment and polyacrylate (PA) as polymer matrix. The conductive pigment CB nanoparticles were prepared by AC plasma arc method, and then treated with concentrated nitric acid. The pristine and oxidized CB nanoparticles were characterized by scanning and transmission electron microscopy. Afterwards, CB powders were dispersed in PA to produce conductive coatings. The effects of CB content and titanium coupling agent on the volume resistivity were investigated. Furthermore, the rheological and mechanical properties of PA/CB coatings were also investigated. The results showed that the volume resistivity of the PA/CB films was decreased with the increasing of CB content and the electrical percolation threshold was about 2.0 wt%. An interesting result could be observed that the rheological threshold value was close to electrical percolation threshold. In addition, the tensile properties were improved with the addition of CB nanoparticles. POLYM. COMPOS. 37:1078–1084, 2016. © 2014 Society of Plastics Engineers     

聚酰亚胺/导电石墨抗静电复合材料的制备与表征

采用原位聚合法制备了聚酰亚胺/导电石墨(PI/CG)抗静电复合材料薄膜,并探讨了复合膜的结构、微观形貌以及导电石墨用量对其表面电阻率、热性能以及力学性能的影响。结果表明:复合膜亚胺化完全、热性能得到提高;石墨的用量为15 phr时,复合膜表面电阻率的数量级为109Ω,达到抗静电的最佳要求范围。     

导电填料在环氧导静电涂料中的应用探讨

以环氧树脂作为主要成膜物质,配合聚酰胺加成物类固化剂制备出一种具有良好的导电性能和优异的防腐蚀性能的双组分浅色导静电油罐内壁涂料,详细探讨了导电填料种类及加入量对导电涂料导电性能的影响。结果表明,导电粉加入量为14%(质量分数)时涂膜的表面电阻率可达到最低值;体系PVC为33%、颜基比为1.4时,涂膜具有最佳的物理机械性能以及化学性能。     

紫外光固化法制备漆酚/铜复合导电涂料及其性能的研究

以漆酚为基体,铜为导电填料,利用紫外光固化法制备漆酚/铜复合导电涂料,讨论了涂膜中铜的含量对漆膜导电性能的影响,并测试了漆膜的常规物理机械性能和耐化学腐蚀性能。结果表明,在紫外光辐照下,漆酚/铜混合物涂膜可快速固化。当铜含量达到45%(wt%)时,漆膜的表面电阻率为13.1Ω·cm,耐冲击强度50kg·cm。     

导电石墨／丙烯酸系电磁屏蔽涂料的研制

叙述了导电石墨、丙烯酸树脂清漆复合电磁屏蔽涂料的制作以及涂层的有关性能。探讨了石墨添加量涂层厚度以及沸水浸泡等因素对屏蔽涂层电阻率、电磁屏蔽效能的影响规律。     

环境友好型氟碳导电涂料的研究

制备了一种以水性氟碳乳液为基料，石墨为填料的水性导电涂料。该水性氟碳导电涂料既是一种环保型涂料，又具优异的性能。本文从石墨质量分数、分散剂、石墨粒径等方面对导电性能的影响进行考察，并给出该导电涂料的综合指标。     

Antistatic coatings for wood-floorings by imidazolium salt-based ionic liquids

The tendency to electrostatic charge is at least an unpleasant property, which is unfortunately typical for many floors. Ionic liquids represent a good alternative to overcome the disadvantages from typical antistatic agents like worse leaching behavior and at least haze in the coating. 1-Allyl-3-alkyllimidazolium salts have been evaluated as antistatic additives in a UV-curing coating for parquet flooring. 1-Allyl-3-methyllimidazolium chloride has been identified to exhibit the highest activity and a minimized leaching. The measured body voltage regarding EN 1815 was below ≤2.0 kV and the resistivity regarding EN 1081 below 10¹⁰ Ω. In addition, there is a synergistic effect with conductive and transparent indium-tin-oxide pigment particles.     

Light-colored compound conductive coatings based on CuI: Effect of volume fraction of CuI on morphology and electrical conductivity

A novel family of compound conductive coating has been designed and developed using Cu(I)I (cuprous iodide) as electrical conducting material. A carefully designed polyurethane matrix material allowed incorporation of large volume fraction of CuI, much above its critical volume concentration, while maintaining good film integrity. Electrical conductivity of a series of such coatings has been studied using dielectric spectroscopy, as a function of volume fraction of CuI and temperature. The light-colored (white–beige colored) coatings having electrical conductivity of the order of up to 10⁻³–10⁻² S cm⁻¹ have been demonstrated. Scanning electron microscopy (SEM) has been used to characterize bulk coating microstructures. The result of this study provides useful insight for fabrication of compound conductive coatings based on CuI.     

The effect of polyaniline phosphate on mechanical and corrosive properties of protective organic coatings containing high amounts of zinc metal particles

The objective of this paper is to reduce the zinc metal content in organic coatings while preserving their high anticorrosive efficiency. The two goals can be achieved by using conductive polymers as components of the protective coating. Polyaniline phosphate (PANI-H₃PO₄) was investigated as the conductive polymer and was also used in surface treatment of steatite talc Mg₃(Si₄O₁₀)(OH)₂. Both PANI-H₃PO₄ and Mg₃(Si₄O₁₀)(OH)₂/PANI-H₃PO₄ were specified using physico-chemical parameters. An epoxy ester resin was used as binder for the organic coatings investigated. Organic coatings were prepared by combining zinc metal with PANI-H₃PO₄ or Mg₃(Si₄O₁₀)(OH)₂/PANI-H₃PO₄. The mechanical resistance of the prepared films was evaluated using the results of mechanical tests. The anticorrosive efficiency of the prepared films was evaluated using the results of direct corrosion tests.     

Preparation of light color antistatic and anticorrosive waterborne epoxy coating for oil tanks

Utilizing waterborne epoxy resin as a main film-forming material, a kind of light color antistatic and anticorrosive waterborne epoxy coating with volume resistivity of 10⁶ was prepared by adding light color conductive pigments and anticorrosive pigments. The coating has excellent corrosion protective and outstanding decorating properties, which is applicable for the inner coating of oil tank. The effects of the type and the amount of conductive pigments, the film thickness, the curing temperature, and the curing time on the volume resistivity of the film were discussed. The properties of the several kinds of waterborne epoxy resin were compared and the determining of anticorrosive pigments was discussed.     

CuCoMnOx光谱选择性吸收涂层的研究

以丙烯酸改性聚氨酯为粘结剂,CuCoMnOx半导体复合氧化物为颜料,采用喷涂法制备了光谱选择性吸收涂层。考察了颜料与粘结剂的质量比〔简称颜基比(P/B),下同〕、球磨时间、温度、底材和膜层厚度等因素对涂层光热性能的影响。结果表明,颜基比为3∶1,球磨时间9～12 h,Al作底材,膜层厚度1.9μm时所得涂层的吸收率αs=0.936,发射率εT=0.312,αs/εT=3.0。经测定,涂层具有较强的机械性能、耐腐蚀性能和耐候性能。     

膨胀石墨／叔氟乳液复合导电涂料的研究

以水性叔氟乳液为基料,膨胀石墨为填料,并加入其它填料和助剂,制备了一种水性叔氟／膨胀石墨复合导电涂料。从膨胀石墨质量分数、分散剂、温度等方面对导电性能的影响进行考察,并给出该导电涂料的综合指标。     

新型耐高温抗静电涂料的制备

以酸性磷酸铝无机黏结剂为成膜物,电熔石英粉为耐高温填料,OP-10为非离子型表面活性剂,氧化镁和氧化锌为固化剂,二氧化锡为导电填料,制备了新型耐高温抗静电涂料。试验结果表明,反应时间为60 min,耐高温填料的加入量为30%,表面活性剂的加入量为1%,固化剂的加入量为0.5%~0.8%,增稠剂的加入量为2.1%~2.7%,导电填料的加入量为1%~2%时,其耐高温性能可达1000℃(5min)。