非金属材料表面涂装工艺研究

本文主要介绍了使用国产涂料代替进口材料，涂装非金属工件的表面涂装新工艺，以提高非金属制品表面涂装的防护性能和装饰性。     

电力电容器外壳表面涂装工艺的研究与应用

为了提高电容器外壳的表面涂装质量 ,涂装前能够有一个无油、无锈、粗糙的基底对提高漆膜的附着力起着决定性的作用。为此对电容器外壳涂装前处理的除油、除锈、磷化进行了一些综合性的工艺试验。获得了质量稳定、膜层结晶细腻、深灰色 ,并与绝缘油之间有良好的相容性。本文又对几种涂料进行了相关试验 ,采用新型涂料 ,使产品的涂装质量得到提高     

TH型新型涂料的应用研究

1.前言 在涂装工作中,材料的好坏优劣对整个产品的防腐蚀、装饰等质量起着极为重要的作用。因此,我们极为重视开发和寻找新的涂料、涂装工艺来提高我们企业的涂装技术水平。     

浅谈电站辅机产品的防腐涂装

本文阐述了产品涂层防腐蚀质量与产品涂装前的表面处理,正确的涂料选用和合理的涂层膜厚,以及涤装施工诸多相关因素。     

变压器涂装工艺的改进

提高油箱及附件的涂装质量是提高变压器的防腐性能和外观质量的关键因素。针对用户的特殊要求和变压器运输及安装的环境，我厂采用新的涂装工艺，增强了油箱及附件的防腐能力，提高了产品的外观质量。     

高固低黏油漆在变压器表面涂装上的应用

制造业进入转型升级发展阶段,绿色环保成为变压器设计制造理念,高固低黏油漆是低挥发性有机化合物含量涂料产品的一种,本文中作者对其涂料性能、施工工艺性、成本等方面进行验证分析,其综合性能优异,满足变压器绿色环保涂装要求。     

玻璃纤维增强环氧树脂复合材料涂层的耐污性能

为了测试玻璃纤维增强环氧树脂复合材料的耐污性能,为输电领域使用该材料提供依据,采用通用环氧树脂及玻璃纤维拉挤复合材料试样,分别在其表面涂装6种不同的疏水性涂料,重点对材料表面防污能力及耐污秽电气性能进行检测,对试样的接触角、滚动角、湿耐受电压及污秽耐受电压等进行了测试。结果证明涂装了疏水性涂料的复合材料试样的耐污性能得到了提升,其中涂装了PRTV的试样性能最好,接触角120°,涂有此涂料的样品在III级污秽情况下,工频污秽闪络、耐受电压比无涂料复合材料提高20%,并且每种涂料样品在经过几次沿面放电闪络以后,表面的疏水性都会减弱甚至消失。在疏水性恢复方面,PRTV及IC701两种涂料比DS-02涂料的要好。     

绝缘文摘与专利

环氧涂料的绝缘性能分析／李志强;曾凡华／现代涂料与涂装,2010（02）经对环氧磁漆的绝缘性分析和检测,以体积电阻率来解释和评价环氧涂料的绝缘性能,用试验检测对比了普通环氧涂料与绝缘环氧涂料在绝缘性能上存在的差异。普通环氧涂料的绝缘性能有时候是不能完全满意的,     

输电铁塔石墨烯重防腐涂料的涂装性能评估

500 kV输变电联网工程380 m输电高塔位于舟山沿海,滨海高盐、高湿及强风环境对铁塔防腐提出了苛刻要求,采用石墨烯重防腐涂料进行全塔涂装防腐。为监督石墨烯涂料的实际涂装效果,采用目视检查、厚度及附着力测试等方法现场多批次抽检涂料的涂装性能,首次获得石墨烯涂料现场涂装性能关键数据;取样检测了石墨烯微粒分散性,分析其防腐机理。结果表明:管壁涂层平整光滑、无针孔;涂层厚度处于220~397μm;涂层附着力为0~1级(划格法), 11.9~18.1 MPa(拉拔法);上述关键指标值满足设计要求。石墨烯中间漆的微观结构表明石墨烯微粒在涂料中均匀分散,有望搭接形成电子导流通道来提高锌粉利用率,并可实现对侵蚀介质的物理隔绝。石墨烯重防腐涂料的现场涂装性能合格,有望发挥出良好的防腐效果。     

高耐候性涂料的研究

为提高户外产品的涂装水平而研制的高耐候性涂料——有机硅丙烯酸涂料是在丙烯酸树脂的合成过程中导入一定量的有机硅官能团,利用Si—0键的解离能比较大,对热、光稳定不易受紫外线的作用而劣化,从而提高涂膜的耐候性。本文着重介绍有机硅丙烯酸涂料的各种性能、特点、并对其制备工艺配方的若干问题进行了讨论。     

浅论涂料、涂装技术的发展方向

文章阐述了绿色化、省能化涂料及其涂装工艺是目前国内外涂料及涂装工艺发展的方向。     

涂装技术在设备中的应用

本文首先介绍了反应釜夹套在染料生产过程中遭受腐蚀性破坏,通过在其外表面涂装J52－1型氯磺化聚乙烯防腐涂料能延长其使用寿命,然后介绍了该涂料的涂装工艺,从而阐述了涂装技术在生产设备中的应用。     

防污闪RTV硅橡胶喷涂施工质量管控

防污闪硅橡胶是具有RTV工艺特性的特种功能的液态涂料,而真正具有防污闪功能的却是其固化后的涂层。液态涂料转化为固化涂层的过程,即喷涂施工,显然是防护质量的重要一环。现行标准中对施工的规范性条款制订的较少,加之施工队伍参差不齐,因此,每个1次现场喷涂形成的涂层质量不尽相同。通过多年的现场监管实践,总结出防污闪硅橡胶喷涂施工中必须管控的关键节点,从而提高喷涂施工的过程质量和最终涂层质量。     

磁芯表面无触点粉末涂装技术

根据磁芯电气性能的要求,磁芯表面需进行涂装处理.现有普通油漆涂装工艺均为人工翻板、二次喷涂,存在劳动强度大、涂层厚度难以控制、原料浪费严重和环境污染等问题.本文基于粉末涂装的特点,研究开发了热塑性/热固性粉末均可以进行无触点表面涂装的新技术,具有产品绝缘强度高、涂层均匀美观、生产成本低等特点,并实现了全自动大批量涂装的生产线.测试表明,涂装后产品质量指标均满足有关磁芯的电气性能要求.     

特种变压器防护涂料的研制及应用

通过对西部电网变压器用防护涂料的耐候性、耐磨性、耐盐雾性能的测试分析,研究了聚氨酯面漆的树脂、填料、助剂对涂料耐候性、耐磨性的影响,以及防锈底漆的树脂基料和PVC值对涂料耐盐雾腐蚀性能的影响.     

涂覆光电混合涂料复合绝缘子延缓覆冰效果研究

针对复合绝缘子覆冰问题,建立了雨凇环境下复合绝缘子的传热平衡方程,并提出了临界防冰功率密度的计算方法;提出了一种光电混合涂料的制备方法:以共沉淀法制备FeMnCuO4复合金属氧化物粉末作为吸光颜料、以石墨粉作为导电颜料、室温硫化硅橡胶为基料,制备出光电混合涂料;最后对不同比例光电混合型复合绝缘子进行了覆冰试验。计算结果表明复合绝缘子临界防冰功率密度介于23.7~635.6 W/m^2之间,环境温度与风速影响显著,防冰用光电混合涂层体积电阻率介于6.38×10^5~4.47×10^6Ω·cm之间,防冰所需太阳光照强度介于144~1899 W/m^2之间;试验结果说明光电混合型复合绝缘子均有一定的延缓覆冰效果,防冰性能随涂层电阻的减小而提升。     

Electrostatic painting of insulating surfaces

The purpose of this work was to develop methods for painting insulating surfaces by the conventional electrostatic painting technique used to coat conducting samples. This technique is not applicable to insulators since the charges carried by the paint accumulate on insulating targets, thereby preventing a proper coating. A detailed investigation of the decay of charges deposited on insulators by a corona discharge simulating the charged paint has confirmed that a grounded counterelectrode (CE) on the back face of the sample speeds up the decay and that the better the contact, the faster the decay. Because a material CE with proper contacts is inconvenient for painting in production configuration, it was suggested that ionized air might behave as a satisfactory CE. Several ionizers have been tested, and good coatings have been obtained, provided that the flows of paint and ionized air are well separated. The possibility of self-creation of ionized air by the voltage of the early paint deposit has also been successfully tested     

The effects of plasma on electrostatic powder coating systems

In electrostatic powder coating, using a frictional charger, a serious problem is the poor charging characteristics of powder paint. In order to overcome this problem, the authors have investigated a new system composed of a plasma generator and a frictional charger. The results obtained for two kinds of polyester powder paints showed that the plasma has a strong effect on the characteristics of frictional charging in powder paint; the frictional charge was more than five times as large as that without plasma effects     

Electric field and space charge of spherical electrode at highvoltage concentric with a grounded conductive sphere

The solution of the space-charge Poisson's equation is presented for a spherical electrode at high voltage concentric with a grounded conductive sphere. The obtained electric field is given in terms of the ion current emitted by the electrode and an integration constant. Both parameters are functions of boundary conditions. Using measured values of the ion current for a range of boundary conditions and applying these boundary conditions to determine the integration constant suggest a minimum value for the ion mobility of 1.9×10^-4 m² /V.s. Approximate formulas for the ion current and the electric field in terms of the independent parameters were also developed. Also, it was shown that this spherical system with its solution can be used to make accurate evaluation of the ion mobility. The obtained solutions can be applied with good approximation to many practical electrostatic systems involving point electrode at high voltage generating ions. Although the subject matter is very general and could have a fundamental research aspect, in this paper, it is meant to be applied to the area of electrostatic powder paint coating. Therefore, all the examples of boundary conditions and illustrations are typical of the electrostatic powder paint coating