丙烯酸酯涂料改性研究进展

综述了近几年有机硅、有机氟、环氧树脂、聚氨酯、纳米复合材料等改性丙烯酸酯涂料的发展概况,对国内外丙烯酸酯涂料改性的研究状况做了较详细的介绍.重点介绍了不同材料改性丙烯酸酯涂料,通过改性大大提高丙烯酸酯的综合性能,拓展了丙烯酸酯涂料的应用范围,并展望了该研究领域的发展前景.     

紫外光固化改性环氧丙烯酸酯涂料的研制

通过对环氧树脂进行改性,降低其粘度,再用丙烯酸酯化,制得低粘度环氧丙烯酸酯预聚体,最后制备出性能优良、易于施工的紫外光固化涂料.本文对环氧树脂改性的催化剂、改性剂及其用量进行了实验研究,并制取改性环氧丙烯酸酯涂料,还对改性前后涂料的性能进行了比较.     

改性聚氨酯涂料的研究进展

综述了国内外利用丙烯酸酯、环氧树脂、有机硅、纳米粒子等对聚氨酯树脂改性在涂料中的应用进展;对近期聚氨酯涂料的改性作了重点描述,展望了改性聚氨酯涂料的研究方向及应用前景.     

TiO2紫外光固化新型涂料的研制

制备出双酚A类环氧丙烯酸酯齐聚物,并用马来酸酐进行改性,配制成紫外光固化新型涂料,考察了涂膜性能;研究了涂料成分中用TiO2作颜料,光敏剂二苯甲酮对紫外光固化树脂性能的影响.结果表明:马来酸酐改性的环氧丙烯酸酯树脂涂料对金属有较好的附着力,显示了较好的流平性;涂料中增加TiO2,其对金属的附着力有所增加;使用光敏剂增加了涂料的光洁度.     

MQ树脂改性UV固化涂料的制备及其在体育器材中的应用

为促进UV固化涂料在体育器材中的应用,用MQ树脂改性有机硅光固化树脂和聚酯丙烯酸酯齐聚物材料,以此分别制备UV固化涂料,分析MQ树脂对UV涂料的补强效果,并探究其在体育器材中的潜在应用特性.试验采用通过加入不同比例用量的试验原料进行了2组不同改性路线的UV涂料制备,并研究了改性后对样品的铅笔硬度、透光率和水接触角的影响...     

丙烯酸酯/碳纳米管导电涂料的制备及其性能研究

将碳纳米管经过超声处理和表面包覆改性处理后,填充到丙烯酸酯中,制得一系列丙烯酸酯/碳纳米管导电涂料,考察了涂料相应的电性能、硬度、附着力、柔韧性等。结果表明,所制备的丙烯酸酯/碳纳米管涂料电阻达到了1×103Ω左右,涂料的附着力、硬度、冲击力等性能良好。     

紫外光固化聚氨酯丙烯酸酯的研究进展

介绍了紫外光固化聚氨酯丙烯酸酯的合成原理及方法,综述了紫外光固化水性、超支化聚氨酯丙烯酸酯及有机硅改性聚氨酯丙烯酸酯的研究进展,概述了紫外光固化聚氨酯丙烯酸酯涂料、胶黏剂、油墨等应用现状。     

丙烯酸酯乳液的改性研究与发展状况

丙烯酸酯乳液是一大类容易制备、性能优良、价格低廉、应用广泛,且符合环保要求的聚合物.丙烯酸酯乳液的改性研究已经得到了多方面的发展.介绍了丙烯酸酯乳液的基本特性,分析了有机硅、有机氟、聚氧酯和环氧树脂改性丙烯酸酯乳液的优缺点,综述了其改性方法及研究现状,对今后丙烯酸酯乳液改性的发展提出了建议.     

聚丙烯酸酯材料改性技术概况

聚丙烯酸酯是一类由丙烯酸酯或甲基丙烯酸酯为主要原料合成的高分子聚合物,它具有良好的力学性能、耐候性能和耐酸碱性能,其制备工艺简单,成本低廉,被广泛用作皮革涂饰、建筑涂料和木材的成膜材料.但由于纯聚丙烯酸酯的抗菌性能、力学性能和热稳定性能较差,限制了其应用范围,因此,可通过化学改性和结构设计改善其性能.利用环氧树脂改性丙烯酸酯得到的环氧丙烯酸酯兼具两者的优点,拥有良好的耐候性和热稳定性.目前环氧树脂改性丙烯酸酯主要有三种方法:物理共混法、酯化改性法、接枝共聚法.聚氨酯一般由异氰酸酯和含活泼氢的化合物聚合而成,可分为聚酯型聚氨酯和聚醚型聚氨酯.聚氨酯丙烯酸酯复合乳液固化涂膜具有优异的耐高温性能和机械加工性能,已被广泛应用于油墨、涂料、胶粘剂等领域.聚氨酯改性的方法有:物理共混法、复合共聚法、核壳共聚法、互穿聚合物网络法.氟聚合物材料具有很多优异的性能,如极低的表面能、优异的稳定性.将含氟基团引入丙烯酸酯乳液中,在固化成膜过程中,含氟基团会向膜表面富集,保护其内部结构,从而获得了性能优异的丙烯酸酯树脂.有机硅是一类无机有机高分子,可以用来连接无机物与有机物.有机硅改性丙烯酸酯的主要方法有:缩聚法、自由基聚合法、硅氢加成法、互穿网络法等.纳米材料的发展也对聚丙烯酸酯的改性起到了积极的作用,纳米材料改性聚丙烯酸酯既可以弥补乳液本身的不足,也具有纳米粒子的优良特性,目前常用的纳米粒子主要有ZnO、Fe3 O4、Al2 O3、TiO2等.本文介绍了采用环氧树脂、聚氨酯、有机氟、有机硅和纳米粒子对聚丙烯酸酯进行改性的研究进展,综述了近年来这些改性物质的结构特点、改性方法、改性性能等方面的研究成果,并对其发展方向进行了分析和展望.     

低粘度紫外光固化竹木基涂料的研制

用一缩二乙二醇与E-44环氧树脂反应,得到的改性环氧树脂再与丙烯酸反应,制备了适于配制竹木基涂饰的紫外光固化的改性环氧丙烯酸酯预聚物。讨论了催化剂种类对环氧树脂转化率及产物粘度的影响,催化剂用量对改性环氧树脂丙烯酸酯化的影响,及光引发剂种类对固化速度的影响。最终制得的改性环氧丙烯酸酯光固化涂料比改性前的性能良好。     

丙烯酸改性醇酸树脂热变色涂料的研究

论述了丙烯酸改性醇酸树脂和热变色材料的制备方法,并将热变色材料分散于丙烯酸改性醇酸树脂中,制备出丙烯酸改性醇酸树脂热变色涂料.结果表明:所得的丙烯酸改性醇酸树脂热变色涂料的性能优良,受热变色效果明显.     

铁路钢桥灰铝粉石墨醇酸面漆的研制

针对铁路钢桥涂层使用寿命短的问题,通过采用加入片状填料的方法,研制出耐候、耐酸雨气氛性能优良的涂料——灰铝粉石墨醇酸面漆。     

氟改性环氧丙烯酸核壳乳液的合成及其涂膜性能

乳液是环保型低表面能海洋防污涂料的重要组分。采用核壳乳液聚合方法合成有机氟改性环氧丙烯酸乳液,探讨了软硬单体质量比、氟单体含量、环氧树脂含量对乳液性能的影响,得到氟改性环氧丙烯酸乳液的最佳配方,并探讨了合成乳液制备的涂料的海洋防污性能。结果表明：软硬单体质量比为1：1,丙烯酸含量为2％,单体核壳质量比为2：3,核玻璃转...     

Forensic analysis of architectural finishes using fourier transform infrared and Raman spectroscopy, part II: white paint

White household paints are commonly encountered as evidence in the forensic laboratory but they often cannot be readily distinguished by color alone so Fourier transform infrared (FT-IR) microscopy is used since it can sometimes discriminate between paints prepared with different organic resins. Here we report the first comparative study of FT-IR and Raman spectroscopy for forensic analysis of white paint. Both techniques allowed the 51 white paint samples in the study to be classified by inspection as either belonging to distinct groups or as unique samples. FT-IR gave five groups and four unique samples; Raman gave seven groups and six unique samples. The basis for this discrimination was the type of resin and/or inorganic pigments/extenders present. Although this allowed approximately half of the white paints to be distinguished by inspection, the other half were all based on a similar resin and did not contain the distinctive modifiers/pigments and extenders that allowed the other samples to be identified. The experimental uncertainty in the relative band intensities measured using FT-IR was similar to the variation within this large group, so no further discrimination was possible. However, the variation in the Raman spectra was larger than the uncertainty, which allowed the large group to be divided into three subgroups and four distinct spectra, based on relative band intensities. The combination of increased discrimination and higher sample throughput means that the Raman method is superior to FT-IR for samples of this type.     

聚酯丙烯酸发光涂料的研制

为了提高发光涂料的耐候性、耐酸碱性、耐油性、耐腐蚀性和力学性能以及余辉强度和余辉时间,对聚酯丙烯酸树脂和铝酸锶铕发光材料的制备方法进行了研究,并将发光材料分散于聚酯丙烯酸树脂中,制备出了高性能的发光涂料.结果表明:用无色透明且透光性良好、特别是紫外线透过率高、透湿性小且耐水性、耐酸碱性、耐候性和力学性能优良的聚酯丙烯酸树脂作为主要成膜物质,将铝酸锶铕发光材料分散于聚酯丙烯酸树脂中制成的发光涂料涂抹性能好,耐腐蚀性、耐油性、耐酸碱性和耐候性强,力学性能优良,余辉亮度强,用照度200 lx的D65光源照射4 min的余辉亮度在10min时为20 mcd/m2,在60 min时为6 mcd/m2;制得的发光涂料余辉时间长,余辉时间在1 000 min以上,为优质的发光涂料.     

环境友好型无锡自抛光防污涂料的研制

研究了以功能性丙烯酸锌树脂为基料、以氧化亚铜和有机防污助剂C为防污剂的无锡自抛光防污涂料配方。通过室内动态划水和实海挂板实验进行性能评价,并与国外涂料对比,筛选出防污性能优良的配方。结果表明,涂料A1和A2具有良好的防污性能;室内动态划水和实海挂板相结合,能快速、有效地评价防污涂料性能。     

Characterization of total volatile organic compound emissions from paints

 Recently, Homeswest in Western Australia and Murdoch University developed a project to construct low allergen houses (LAH) in a newly developed suburb. All potential volatile organic compound (VOC) emission materials used in LAH are required to be measured before the construction of LAH, to ensure they are low VOCs emission materials. To protect people sensitive to exposure to VOCs it is important to evaluate and select low VOCs emitting paints. In this paper, therefore, twelve different paints provided by local manufacturers were selected for analysis to characterize total volatile organic compounds (TVOC) emissions. Emissions of TVOCs from six organic solvent-soluble paints and six water-soluble paints were evaluated using a small test chamber under controlled temperature, relative humidity and air exchange rates. The major volatile organic compounds in these paints were also identified. The time dependence of TVOC emissions from paint products in the chamber was evaluated. TVOC emissions from organic solvent-soluble and water-soluble paints were compared. The influence of air exchange rate on the TVOC concentrations emitted from organic solvent-soluble and water-soluble paints was also investigated. A double-exponential equation was used to evaluate emission characteristics of TVOC from paint products. With this double-exponential model, the physical processes of TVOC emissions can be explained. A variety of emission parameters can be calculated and used to estimate real indoor TVOCs concentrations. Received: 13 July 1999 / Accepted: 27 September 1999     

Thermal hazard assessment of nitrobenzene/dinitrobenzene mixtures

The aims of this study were to improve the emission test method for the 20 L small chamber standardized in Korea using paints and to develop an optical test method for paints. The emission factors of the total volatile organic compounds (TVOC) and formaldehyde from oil-based paints, emulsion paints and water-dispersion paints coated at 300 g/m(2) and cured for 24 (48)h were determined using the 20 L small chamber method. The emission factors of TVOC and formaldehyde from all paints under steady state conditions were determined after 7 days with 24 (48)h of curing. The Korean standards require that paints be measured and analyzed on the third day after a test. However, the emission factors of TVOC and formaldehyde from the paints only began to stabilize 7 days after installing the samples. Until now, the emission test results have been reported mainly as concentration vs. time or emission factor vs. time profiles of TVOC and formaldehyde. The emission factors of the target volatile organic compounds (VOCs) and aldehyde types were obtained under specific test conditions according to the different coating weights. For all target volatile organic compounds and aldehyde types examined, the paint coating weight had an effect on emission.     

环氧-丙烯酸热变色涂料的研究

用性能优良的环保型的水性环氧-丙烯酸树脂作主要成膜物质,将无机热变色材料分散于环氧-丙烯酸树脂中,制成环氧-丙烯酸热变色涂料.结果表明,所得到的环氧-丙烯酸热变色涂料的性能优良,受热变色效果明显.     

AECATI改性部分丙烯酸环氧酯树脂

采用自制4-丙烯酰氧乙氧甲酰氨基甲苯2-异氰酸酯(简称AECATI)与自制部分丙烯酸环氧酯树脂(制备时环氧树脂E-51中的环氧基与所用丙烯酸羧基的当量比为1:0.6)的羟基反应,制得本改性树脂;经优选试验,得到了适宜于本改性树脂的成膜条件及其清漆适用的固化条件,所成漆膜综合性能良好,耐水性能优良。