炭黑石墨填充复合导电涂料的制备研究

制备了一种以炭黑和石墨为导电填料的复合型导电涂料,分别研究了炭黑填充和石墨填充的导电涂层性能,确定了采用炭黑、石墨混合填充的导电涂料体系,详细研究了混合填料的比例及含量对涂层导电性能的影响。     

可导电玻璃纤维增强聚丙烯材料的性能分析

研究了导电炭黑(CB)的不同添加方式、不同导电炭黑母粒含量对玻璃纤维增强聚丙烯材料的表面电阻率、力学性能和熔体流动速率的影响.结果表明,导电炭黑母粒对聚丙烯材料的分解温度没有影响;导电通路的形成与导电炭黑在玻璃纤维增强聚丙烯体系中的分散性有关;添加导电炭黑母粒体系中更有利于形成导电通路;当导电炭黑母粒添加至40％时,玻...     

导电涂料（Ⅱ）

4添加型导电涂料添加型导电涂料是由导电填料、绝缘性成膜粘合剂、助剂和溶剂组成的。4．1成膜粘合剂、助剂和溶剂对导电涂料成膜粘合剂、助剂和溶剂的选择除应满足一般涂料所具备的条件外［11］，对以下的几个问题应予以特别注意。4．1．1基科对导电境科的渗流临界值和对涂层最高电导率的影响官本启象［12］等人研究了固定炭黑的种类时，聚合物对炭黑的填充的渗流临界值（体积分数）的影响，发现聚合物的临界润湿表面张力（人）与渗流临界值之间存在如图8所示的关系。从图8可以看到，随聚合物的表面张力的增大，炭黑的临界体积分数也增加。…     

炭黑—漆酚醛树脂导电涂料的研究

本文研制了炭黑 -漆酚醛树脂导电涂料。讨论了导电填料炭黑的含量、研磨时间以及漆膜的厚度对涂料导电性能的影响。     

镀银铜粉导电填料对复合型导电涂料性能影响的研究

研究了镀银铜粉作为导电填料,聚氨酯树脂作为基料树脂配制复合型导电涂料时,镀银铜粉含量及其形貌,以及不同形状导电填料配用对涂膜导电性能的影响,并通过涂膜的导电机理,探讨造成这些影响的原因。     

塑料件用水性导电涂料的研制

以水溶性丙烯酸树脂为基料、银包铜粉为导电填料，制备了一种水性导电涂料，并对其理化性能参数进行了测试。讨论了导电填料、水加入量、分散剂以及固化温度、涂膜厚度等对导电涂料性能的影响，确定了最佳的水性导电涂料组成和工艺条件：树脂用量22％、银包铜粉用量35％～44％、溶剂水的添加量28％-40％、分散剂用量0.62％左右、固化温度55℃。     

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。     

炭黑／碳化硅复合导电涂料的制备及导电性能研究

制备了一种以炭黑、碳化硅为混合填料的复合导电涂层。研究了炭黑／碳化硅混合填料复合涂层的导电性能,重点研究了混合填料和炭黑种类对涂料导电性能的影响。试验结果表明,混合填料能够明显改善涂层的导电性能,混合填料的炭黑含量在5％时出现渗透阈值,当炭黑含量为25％时电阻率降至10．59Ω·cm。     

用于木材的水性纳米复合导电涂料的制备与性能研究

选用阳离子醚化淀粉为基体,导电炭黑为导电填料,水为分散介质,采用机械共混的方法制备了水性纳米复合导电涂料,通过SEM表征了其微观结构,TG分析了其热稳定性,并研究了水性纳米复合导电涂料制备过程中不同因素对涂料涂覆性能、黏度、导电性能的影响。结果表明:制备过程中乳化时间越短、淀粉含量越大、NaOH含量越少,所得纳米复合导电涂料的黏度越大;所制备的水性纳米复合导电涂料具有良好的导电性,导电炭黑颗粒聚集体均匀地分散在阳离子醚化淀粉基体中,且随着导电炭黑含量的增加,涂层的表面方阻减小;导电涂料的热稳定性好,使用导电涂料的木板粉末喷涂效果良好,固化后表面均匀平整光滑,无明显缺陷。     

炭黑导电浆料的制备及电性能分析

以炭黑为导电填料,氯醋树脂、羟丙树脂为固化材料制备了导电浆料,采用XRD、SEM和激光粒度分析仪等对导电浆料炭黑进行分析和表征,结果表明,导电填料炭黑是由100 nm以下的一次颗粒构成的粒度分布在6μm左右的类石墨结构的物质。研究了炭黑添加量对导电浆料粘度和方阻的影响,结果表明,通过调整炭黑的添加量可以改变导电浆料的粘度和方阻,最终制备了粘度适宜,方阻可达358Ω/m2的导电浆料。     

用杜仲胶/碳纳米管改性环氧树脂制备导电防腐涂料及其性能

以杜仲胶(EUG)和环氧树脂(E-51)为涂层基质、碳纳米管为导电填料制备了导电防腐涂料,考察了 EUG用量对复合涂层导电性和耐腐蚀性的影响.采用差示扫描量热仪和动态热机械分析仪研究了复合涂层的热性能,用四探针测试仪研究了导电性能,分别通过电化学阻抗谱及盐雾测试和附着力测试研究了耐腐蚀性和附着力.结果表明,当EUG用量...     

Studies on graphite based conductive paint coatings

Electrically conductive coatings are mainly required for static charge dissipation and electromagnetic/radio frequency interference (EMI/RFI) shielding. Electrically conductive coatings are prepared by the incorporation of the metallic pigments/graphite onto the binder. In the present investigation graphite is used as the conductive filler and epoxy polymer as binder. Optimization of the solid content and pigment volume concentration (PVC) of the coating is done by varying the composition of the binder and pigment volume. To get the minimum resistivity value offered by the coating. The resistivity of the coating was measured by means of the four-probe resistivity method. The effect of inclusion of carbon black as additional pigment is also studied. The results are presented and discussed in this paper.     

喷气燃料罐用浅色导静电防腐蚀涂料研究

针对喷气燃料罐用导静电防腐蚀涂料的特殊要求,研制出一种浅色导静电防腐蚀涂料。对浅色导静电材料种类、用量以及分散剂对涂膜导静电性能的影响进行了试验。试验结果表明:不同种类浅色导静电材料对涂膜导静电性能影响程度不同;导静电材料用量对涂膜导静电性能的影响与导静电填料在涂料配方中的颜料体积浓度有关,综合考虑涂膜导静电和防腐蚀性能之间的关系,确定了导静电填料的最佳颜料体积浓度范围。性能测试表明:所研制涂料各项性能指标均达到国家标准。通过对浸泡过涂膜的喷气燃料的性能指标测试表明,该涂料各组分对喷气燃料无污染,可广泛用于喷气燃料舱、运油车、输送管线内壁。     

Preparation and evaluation of electrocatalytic oxide coatings on conductive carbon-polymer composite substrates for use as dimensionally stable anodes

This work investigates the feasibility of developing a lower cost dimensionally stable anode based on a polymer substrate by examining possible methods of applying coatings, such as MnO₂, to catalyse the oxygen evolution reaction. The conductive polymer is based on a blend of polypropylene and a rubber, to provide the mechanical strength and acid resistance of the electrode, with graphite fibre and carbon black dispersed through the composite to ensure a reasonable conductivity. Of the different compositions analysed, the best incorporated Degussa XE-2 carbon black. This material not only displays an overpotential at its bare surface which was comparable to the lead electrode, but also it provides excellent contact with the catalyst coatings. Two methods of applying a catalytic coating, thermal decomposition and pressed oxide coating, are evaluated. Coatings prepared by thermal decomposition displays an overpotential greater than the standard lead electrode, although the poor performance of the catalysts is found to be due to poor contact with the conductive sites of the substrate and to incomplete thermal decomposition of the metal chlorides to the oxide. The pressed oxide coating method is the technique developed during this work to take advantage of the properties of the polymer composites. Polymer substrates are heated until soft and the MnO₂ catalyst (in its active form) is pushed into the surface. Electrodes coated in this manner with MnO₂ all display excellent overpotentials which, on average, are 0.2 V less than the lead electrodes. Extension of this technique to the coating of polymeric substrates with other catalytic oxides shows great potential.     

Marine biofouling inhibition by polyurethane conductive coatings used for fishing net

The purpose of the present study is to develop a new conductive coating for application on fishing nets that can be used as an anode, while submersed in the sea, to generate free chlorine which will in turn inhibit marine biofouling. To confirm the durability and viability of this coating, long-term field tests were carried out in the Nanao harbor in Taiwan. Electrical resistivity tests showed that polyurethane resin with carbon black and graphite can demonstrate the lowest resistivity: 0.06 Ωm. This sample also generated optimal quantities of free chlorine, which performs excellent antifouling properties. The use of carbon black in conjunction with graphite did prove to yield greater benefits. A 500-day field test showed that the PU-CG conductive coatings reduced the quantity of marine biofouling attached to the cage by approximately 79%. Furthermore, the chlorine produced was within safe levels, and judged not to pollute the sea. However, this antifouling system still shows durable problems which remain to be considered.     

炭系导电涂料的研究进展

综述了炭系导电涂料的导电机理,以石墨、炭黑为导电填料,以醇酸树脂、丙烯酸树脂及氯醚树脂为基料的炭系导电涂料的研究进展,并介绍了新型纳米石墨微片填料及其应用研究进展。     

Dispersion and resistivity optimization of conductive carbon black in environment‐friendly conductive coating based on acrylic resin

A designated chemical structure, determined through the analysis of elements and groups on the surface of conductive carbon black (CB), alcohol‐soluble acrylic resin used for dispersion of conductive CB was successfully prepared based on the principles of similar structure complex well. The content of acrylic acid, glass transition temperature (T_g), molecular weight (M_w), self‐crosslinking degree, and N‐hydroxymethyl acrylamide content were investigated to optimize the electrical conductivity and dispersion effect of conductive CB in coating. The composites of acrylic resin and conductive CB were characterized by X‐ray photoelectron spectroscopy for surface chemical structure on CB, scanning electron microscopy for morphology of conductive coating, Fourier transform infrared for groups in acrylic resin, and digital multimeter techniques for surface resistivity of conductive coating. The optimum surface resistivity of the acquired conductive coating could reach 600 ohm/sq, showing an excellent conductive property. Moreover, the conductive coating still maintained a lower resistivity after salt spray and weather resistance test. POLYM. COMPOS. 36:467–474, 2015. © 2014 Society of Plastics Engineers     

导电涂料的研究现状及发展趋势

综述了国内外导电涂料的研究现状,展望了未来导电涂料的发展趋势。国外研制的本征型导电涂料主要集中在聚苯胺、聚乙炔、聚苯硫醚、聚吡咯、聚噻吩、聚喹啉等,研制性能优良的织物用导电涂料和纳米导电涂料也取得了进展。我国陆续研制出高性能的非碳系导电涂料。目前,添加型导电涂料是导电涂料的研究、开发以及工业化的重点．本征型导电涂料的探索和研究正处于初步阶段,高性价比和环保型导电涂料将成为发展方向。     

不同颜色色浆对氟树脂/铝低红外发射率涂层的影响

研究了大红、深黄、水紫、黑色4种颜色色浆对氟树脂/铝低红外发射率涂层光泽、附着力、硬度、粗糙度、耐冲击性、色差、红外发射率、耐腐蚀性等性能的影响。研究结果显示:深黄色色浆涂层的发射率最低,约为0.1;不同色浆对氟树脂涂层色差明度影响不同,相对于其他色浆,水紫能够使涂层偏暗;大红、深黄、水紫色浆的涂层硬度均为6H;加深黄色浆的涂层附着力最好,其次是大红色浆和水紫色浆;深黄色浆对涂层的耐冲击性影响最大,其次是大红色浆和水紫色浆;相对于大红、深黄、黑色色浆,水紫色浆涂层具有最低的粗糙度,表面比较光滑;水紫色浆和深黄色浆的红外波峰比较持平,有利于减小表面发射率;水紫色浆氟树脂涂层的耐腐蚀性能最好。耐盐水腐蚀测试后4种涂层均没有明显失光,水紫涂层没有发生明显变色,深黄和黑色涂层起泡密度较低。水紫色浆因其粒径均匀细小,在氟树脂涂料中易分散,与氟树脂相容性好,因此具有相对较优的综合性能。     

导电聚硫密封剂研究

随着电子行业的飞速发展,电子设备对电磁环境的要求也更加苛刻,电子设备箱的密封需要使用具备导电功能的密封剂。本文研究了导电炭黑对聚硫密封剂导电性能和力学性能的影响,确定了导电炭黑在聚硫密封剂中的最佳用量,还研究了热空气老化对导电聚硫密封剂性能的影响。结果表明,研究的导电聚硫密封剂可以在高温环境中使用。