Bi─V类无机可逆热变色材料的研制

用固相反应法研制了Ｂｉ－Ｖ类无机可逆热变色材料，并确定了制备的工艺条件。该热变色材料在１１０℃温度下可由黄色变为橙红色，变色灵敏，可逆重复性好。     

实用可逆型热变色材料的研究

实用可逆型热变色材料的研究刘晓峰，施章杰，王昭明（华东师范大学化学系上海２０００６２）１概述热变色材料是一类在一定温度范围内，材料的颜色随温度的改变而发生变化的特种材料。按其热变色的可逆性与否可分为可逆型热变色材料和不可逆型热变色材料了按其热变色温度...     

可逆示温材料的变色机理及应用进展

本文介绍了无机可逆示温材料和有机可逆示温材料的组成、特点以及热致变色机理等，简要阐述了无机、有机和液晶可逆示温材料在工业、农业、医药以及日常生活方面的应用，充分说明了可逆示温材料具有广阔的应用前景。     

示温涂料的应用与发展

简介了示温涂料的定义、分类及其发展过程。并分别从概况、应用范围、使用方法以及发展前景等几个方面讲述了国内外单变色不可逆示温涂料、多变色不可逆示温涂料和单变色不可逆示温贴片的发展情况。同时 ,还介绍了无机可逆示温涂料、有机可逆示温涂料及高分子液晶可逆示温涂料的应用及其发展 ,并通过可逆示温涂料现存的问题展望了其未来发展方向。     

可逆型示温涂料的研制

采用醇酸漆漆漆基，变色颜料，价廉、易得的叶蜡石填料和二甲苯溶剂，制得可逆型示温少料。介绍了该涂的变色原理和制法。通过正交试验，讨论了变色颜料、漆基和填料的用量，以及涂层厚度和恒温时间对涂料变色温度的影响。     

FW防伪涂料的研制和应用

介绍了以钴盐作为变色物质、不同的无机材料作为填料,研制了低温可逆示温涂料的工艺流程。通过变色颜料的变色原理的分析,解释了防伪涂料可逆变色现象。研究了温度、湿度及涂层厚度对涂料变色性能的影响。     

含钴低温可逆示温涂料的研究

采用钴盐作为变色材料,无机金属材料作为填料,研制成低温可逆变色涂料,通过对填料选择,变色温度,复色时间的试验及涂料性能的检测,确定最佳涂料配方。     

一种可逆热致变色材料的制备及微胶囊化研究

以隐色染料结晶紫内酯、溶剂十六醇、显色剂对羟基苯甲酸苄酯为原料制备有机类可逆热致变色材料，并确定了隐色染料、显色剂和溶剂的最佳配比为1：3：30。在可逆热致变色材料中，溶剂主要决定可逆热致变色材料的变色温度，显色剂主要决定可逆热致变色材料颜色的深浅，隐色染料本身决定了可逆热致变色材料的颜色及隐定性等性能。微胶囊化结果表明，微胶囊产品能增强可逆热致变色材料的热稳定性，可增加材料的抗溶剂性，且材料不易流失。     

示温涂料

201001112单组分热沮可逆感温变色涂料的制备[刊]／周荣华等∥中国涂料．-2009,24（11）．-47—50     

以孔雀绿内酯为变色剂的可逆示温涂料的研究

本文以孔雀绿内酯为变色剂，通过可逆性示温剂的配制，基料、溶剂的选择，研制了一种可逆示温涂料。这种涂料色变鲜明，可逆、蓝绿色淡黄绿色、变色温度低（５０－５５℃），变区间窄、附着力强。     

Fluorescence emission sensing in coatings: Method for defects detection in coated surfaces of structural elements

We suggest a method for detecting defects in coated surfaces by utilizing fluorescence emission. Fluorescent material was added to the coating layer prior to the curing stage. The fluorescent material used was characterized experimentally to measure absorption coefficient and observe the absorption and emission wavelength range. The tests were then made for fluorescence emission in coated layers prepared either by draw down blade or sprayed with an airless spray gun. The concentration of fluorescent material in a coated layer is the main parameter studied. Fluorescence emission is suggested as a probe to enhance the visual inspection of coated layers because it has a distinctive emission signal. It was found that for a homogeneous distribution of fluorescent material within a layer of coating, the emission increased up to a certain concentration limit. This limit was found to be around 0.5 wt%; further increase of fluorescent material leads to emission signal decrease due to self absorption phenomenon.     

Waterborne vegetable oil epoxy coatings: Preparation and characterization

The utilization of renewable resources such as vegetable oils [VO] for the development of environment friendly waterborne [WB] materials is encouraged worldwide. The preparation of WB materials from VO is a challenging task due to their hydrophobic nature. The present work describes the synthesis of WB epoxy from VO [WBOE]. WBOE was characterized for its structural and physico-chemical attributes. The cured material was subjected to physico-mechanical, chemical resistance tests, and thermal analyses. The coatings of WBOE showed good physico-mechanical, chemical resistance as well as thermal stability and may find application as eco-friendly WB coatings with safe usage up to 220 °C.     

Carbon and titanium diboride multilayer coatings

Titanium diboride (TiB₂) is a metal-based refractory ceramic material that has been investigated in industrial applications ranging from cutting tools to wear parts, and for use in the aerospace industry. The unique properties which make this material so fascinating are its high hardness, high melting point and its corrosion resistance. TiB₂ is prevented from wider mainstream use because of its inherent brittle nature. With a view to overcome this in coating form and with the aim of providing in addition inherent lubricity, in this study, 50-layer TiB₂/C multilayer stacks have been fabricated, with varying volume fractions of ceramic whereby the interfaces of the layers limit crack propagation in the TiB₂ ceramic.TiB₂ has been multilayered with carbon to make use of the unique and hybrid nature of the bonding in carbon coatings. DC magnetron sputtering with substrate bias was the preferred route for the fabrication of these coatings. AISI tool steel has been used as the substrate material. By varying the amount of TiB₂ ceramic from 50% to 95%, the hardness of the coating is seen to increase from 5 to 17 GPa. The hardness is observed to decrease as a function of increasing carbon content, agreeing with other studies that the carbon layers are not load bearing. The graphitic nature of the sp² bond, however, acts as a lubricant layer.     

新型单组分松香蔗糖聚氨酯—聚丙烯酸涂料研究

以松香,蔗糖,聚丙烯酸酯及异氰酸酯预聚体等为原料,合成了一种单组分聚氨酯清漆。研究了化学组成对漆膜性能的影响。结果表明,当松香蔗糖聚氨酯（ＡＲＳＰＵ）与聚丙烯酸酯（ＰＡ）共混的质量比为６５／３５,而ＡＲＳＰＵ合成中ＡＲＳ与异氰酸酯预聚体的质量比为６５／３５时,漆膜的耐溶剂性能及硬度较为合适。该清漆快干,耐低温,耐油,耐水,耐酸碱性能良好。     

改性聚乙烯醇建筑涂料的研制

本文介绍了一种用甲苯二异氰酸酯对聚民惭烯醇改性的方法,使其耐水性显著提高。改性成膜物加入各种填料,得到一种耐水性很强、耐磨性很高的涂料。     

Determination of Coating Thickness of DEHS on Submicron Particles by Means of Low Pressure Impaction

The increasing use of submicron and nano‐scaled particles in process engineering sets a demand for new methods for the characterization of particle properties. In the present work low pressure impaction as a very sensitive method for the characterization of the coating of nanoparticles is introduced. The determination of the coating thickness is based on the change of effective density due to the differing densities of particle and coating material. As model systems the coating of spherical silver nanoparticles and agglomerates of silver nanoparticles with DEHS (di(2‐ethylhexyl)sebacate) were used. A tandem differential modelling analyzer (DMA) setup served as a reference for the measurement results obtained with the low pressure impactor (LPI). The LPI showed a very high sensitivity for the coating of spherical particles. Changes of the particle radius below 1 nm could be detected. In contrast to spherical particles, agglomerated particles did not show a clear correlation between coating thickness and the change of effective density for coated agglomerates.     

Newly developed urethane modified polyetheramide-based anticorrosive coatings from a sustainable resource

Polyetheramide resin was prepared from N,N-bis (2-hydroxy ethyl) soybean oil fattyamide (HESA) and bisphenol-A. It was further treated with toluylene-2,4-diisocyanate (TDI) in different weight percent to obtain urethane modified polyetheramide resins (UPEtA). The structural elucidation of UPEtA was carried out by FT-IR, ¹H NMR and ¹³C NMR spectroscopic techniques. Physico-chemical and physico-mechanical analyses were performed by standard methods. The solubility of UPEtA was determined in various organic solvents at room temperature. TGA and DSC techniques were used to analyze the thermal and curing behavior of the UPEtA resin. The coatings of urethane modified polyetheramide were prepared on mild steel strips. The anticorrosive behavior of UPEtA resin-based coatings in acid, alkali, water and xylene were investigated. The studies reveal that the newly developed UPEtA resin can be used as an anticorrosive coatings material.     

Synthesis and characterization of polyurethane coatings derived from polyols synthesized with glycerol, phthalic anhydride and oleic acid

Polyester polyols, with various oleic acid contents were used in the preparation of polyurethane (PUR) coatings. The polyols were designated as Alk28, Alk40 and Alk65, in which 28, 40 and 65 represents the percentages of oleic acid in the respective formulations. The physical properties of the polyols such as acid value and hydroxyl value have been determined and the infrared (IR) spectroscopic analysis of the polyols is reported. The polyols were reacted with aromatic isocyanate (toluene 2,4-diisocyanate, TDI) to form PUR coatings. The effects of varied NCO/OH ratio and oleic acid content of polyols on physical properties of PUR coatings on mild steel panel were determined. The characterization of PUR coatings carried out by IR spectroscopic analysis and physico-chemical properties such as drying time, pencil hardness, adhesion properties, solvent resistance and corrosion/chemical resistant determination were reported. The coatings obtained from polyol Alk28, exhibits the best overall properties followed by Alk40. PUR coatings from Alk65 were softer. As the NCO/OH ratio of the coatings increased, there were progressive increases in mechanical and anticorrosive properties for all the coatings. Overall, these studies showed that the material holds promise for use as effective surface coating compound by designing the formulation of the desired performance.     

Effect of Al and Ag dopants on the corrosion resistance of the AISI 316L-YSZ system

We present results for the deposition of coatings of zirconium stabilized with Yttria (YSZ) and doped with aluminum and silver. The coatings were grown from an YSZ ceramic target symmetrically covered with metallic (Al, Ag) pieces on AISI 316L steel substrates, via the RF sputtering technique. The microstructure of the coatings was characterized by means of X-ray diffraction (XRD), the chemical composition was determined through X-ray dispersive energy (EDX) analysis, and the electrochemical response was evaluated via impedance (EIS) and Tafel corrosion techniques. The XRD analysis showed that the coatings exhibited peaks belonging to the target material, dopant elements, and oxides such as Al₂O₃. Electrochemical analysis indicated an increase in the corrosion resistance of the coatings grown on aluminum oxide.