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161.
我国涂料市场的发展现状及趋势   总被引:1,自引:0,他引:1  
从我国需求旺盛的涂料市场、涂料产品的结构等方面,阐述了我国涂料市场发展的商机;指出环保型防腐涂料的发展方向。  相似文献   
162.
通过分析比较,找出制备硅酸盐富锌涂料的理想配方。试验检测表明:该涂层具有良好的附着力,较强防腐性能等。是一种很有发展潜力的防腐蚀涂料。  相似文献   
163.
织物涂层用聚氨酯   总被引:4,自引:1,他引:4  
叙述了织物涂层在我国的发展前景以及聚氨酯涂层在织物涂层中的作用。强调水性聚氨酯涂层剂开发的必要性。  相似文献   
164.
乳胶涂料中填料粒径测定与分散剂的选择   总被引:1,自引:0,他引:1  
介绍了重力沉降法和容量沉降法两种测定乳胶涂料中填料粒径的方法。通过比较粉体粒径结果显示:沉降法比激光法更形象直观,更能代表体系粒径真实情况。以滑石粉、重钙、轻钙粉体为基准,采用不同用量、不同类型的分散剂的容量沉降法进行比较得出:用容量沉降法能定量地对分散剂性能做出评价。  相似文献   
165.
Thick, high impedance organic coatings are those class of coatings used to provide corrosion protection to naval vessels, pipelines, gasoline storage tanks, and other large structures such as bridges and plant structures. These coatings, especially the newest generations now being used in practice, can provide exceptional protection and lifetime of performance such that properly and accurately assessing and differentiating among competing coatings is a very difficult task. The standard protocol of salt fog testing (ASTM B117), immersion testing, and outdoor exposure in a corrosive environment with subjective evaluation of a coating's performance durings and after testing, does not adequatcly rank and predict coating lifetimes for new coating systems, especially for the environmentally compliant coating systems such as powder coatings (especially the thick, fusion bonded epoxy (FBE) coatings used for pipelines), two component epoxy and urethane coatings and waterborne coatings. New, objective test methods are desperately needed by users and manufacturers of coatings. A relatively new electrochemical test procedure, electrochemical noise methods (ENM), as developed by Skerry and Eden, has been shown in our laboratory to be very successful in the ranking and prediction of relative coating performance. We have used the method successfully on naval ship coatings, several pipeline coatings and other related systems, and Skerry has used them successfully on industrial maintenance coatings. We have used these methods in conjunction with electrochemical impedance spectroscopy, d.c. resistance measurements and cyclic salt fog testing of the ProhesionTM type. In our studies of pipeline coatings, we needed to investigate thermal effects because of their extended range of use temperature. In these studies, we have discovered that electrochemical methods can be used for an in situ measurement of the Tg of coatings in electrolyte immersion. Further, the ‘plasticizing’ effect of aqueous electrolyte absorption as well as its relative irreversibility has been shown. For all coatings studied, ENM provided useful, objective, numerical data which rapidly ranks coatings and provides useful information on the relative lifetime prediction of coatings which may provide up to 30 years of service.  相似文献   
166.
专用粉末涂料和涂装发展的新展望   总被引:2,自引:0,他引:2  
新型专用粉末涂料以其涂膜超薄型化、低温固化和高耐候性等优势,并以预裁割坯料新工艺代替预涂装卷材工艺的新特点,将成为粉末涂料新的增长点。还提出了若干建议和意见。  相似文献   
167.
遮盖聚合物的制备及其在水性涂料中的应用   总被引:2,自引:0,他引:2  
合成了一种中空徽球遮盖聚合物?采用扫描电子显微镜分析了所合成遮盖聚合物的形貌结构,并对采用该遮盖聚合物的水性涂料的配方作了简单研究。该遮盖聚合物在有光乳胶漆中可以部分替代钛白粉,降低成本;即使在工程乳胶漆中,加少量该遮盖聚合物也可以适当提高涂层的耐洗刷性能。  相似文献   
168.
Magnetic iron oxide (Fe3O4) was prepared by a coprecipitation method. Core–shell composite magnetic polymer microspheres with carboxyl groups were synthesized by the dispersion polymerization of styrene and acrylic acid in the presence of magnetic oxide, and dibenzoyl peroxide was used as an initiator. The synthesized magnetic polymer microspheres were characterized with X‐ray diffraction, transmission electron microscopy, scanning electron microscopy, Fourier transform infrared spectroscopy, and so forth. The results indicated that the product was single‐phase Fe3O4, and its average size was about 10 nm. The configuration of the microspheres, which contained carboxyl groups, was spherical, and the average size was about 2 μm. The results of vibrating sample magnetometry tests showed that the magnetic powders produced by different surfactants had different saturation magnetizations. When poly(ethylene glycol) with a weight‐average molecular weight of 4000 was used as a surfactant, the saturation magnetization of the samples reached 69.2 emu/g. The factors that affected the shape, magnetism, size, and distribution of the microspheres were also studied. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007  相似文献   
169.
介绍了水性彩色厚浆防锈涂料的研制、配方设计因素、参考配方、性能指标及施工方法。  相似文献   
170.
Monolayer and bilayer coatings of TiAlN, AlCrN, and AlCrN/TiAlN were deposited onto tungsten carbide inserts using the plasma enhanced physical vapor deposition process. The microstructures of the coatings were characterized using scanning electron microscopy (SEM) and atomic force microscopy (AFM). The SEM micrographs revealed that the AlrN and AlCrN/TiAlN coatings were uniform and highly dense and contained only a limited number of microvoids. The TiAIN coating was non-uniform and highly porous and contained more micro droplets. The hardness and scratch resistance of the specimens were measured using a nanoindentation tester and scratch tester, respectively. Different phases formed in the coatings were analyzed by X-ray diffraction (XRD). The AlCrN/TiAlN coating exhibited a higher hardness (32.75 GPa), a higher Young's modulus (561.97 GPa), and superior scratch resistance (LcN = 46 N) compared to conventional coatings such as TiAlN, A1CrN, and TiN.  相似文献   
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