水溶性含氟丙烯酸酯乳液的合成研究进展

含氟丙烯酸酯类聚合物因具有突出的成膜性能及耐老化性能而成为优良的成膜材料。其中,水溶性含氟丙烯酸酯乳液的合成研究,具有广泛的单体种类,聚合方式简单多样,在涂料领域受到了广泛的应用和关注。选择合适的乳液共聚单体及聚合工艺,不仅能够根据实际需要调节含氟聚合物的分子结构,而且可以获得最佳含氟量,以满足特殊性能需要的含氟丙烯酸酯乳液。综述了水溶性含氟丙烯酸酯乳液的聚合方法、常用含氟单体和非氟单体以及改性研究进展。     

含氟丙烯酸酯类单体合成技术与应用研究

含氟丙烯酸酯类聚合物是目前氟材料领域全球竞相研究开发与应用的热点产品,介绍了国内外含氟丙烯酸酯单体的合成技术及国内含氟丙烯酸酯类聚合物的应用研究,并针对国内单体合成技术和聚合物应用现状提出一些发展建议。     

含氟丙烯酸酯类单体合成技术进展

含氟丙烯酸酯聚合物具有许多特殊优异性能,成为新型含氟材料领域研究热点。在许多要求特殊性能领域获得广泛应用,如特殊涂料、纸张和皮革涂饰剂、织物整理剂等。阐述了含氟丙烯酸酯类单体合成技术进展,并对其研究开发提出一些建议。     

卤代吡啶类化合物的合成及应用

一、前言含氟、杂环、手性是现代农药和医药领域新药合成的三大特征。含氟杂环化合物的种类非常多,由于受合成技术的限制,目前应用最多的是吡啶类含氟化合物。吡啶含氟化合物具有含氟、含氮杂环两种特性,它们与一些手性中间体结合所形成的具有含氟、含氮杂环、手性等三大特性的     

氟气及其应用

简叙了氟气的性质及其制备方法,介绍了氟气在含氟无机材料、含氟精细化学品、含氟聚合物材料及半导体领域应用,分析了氟气及其在下游产品的应用趋势。认为随着对氟气安全性不断认知和掌控,用氟气氟化将成为氟化工艺中重要方法,在稳定无机氟化试剂制备、含氟有机化合物高效制备、新能源用氟化石墨制备和作为半导体清洁气体等方面发挥重要作用。     

以含氟共聚物为助乳化剂的种子乳液聚合及其制备方法

正以含氟共聚物为助乳化剂的种子乳液聚合及其制备方法,属于化工高分子材料领域。利用含氟共聚物为助稳定剂的种子乳液聚合制备含氟丙烯酸乳液减少了含氟单体的消耗。先将含氟单体和乙烯基类单体或丙烯酸类单体通过自由基聚合合成共聚物;以含氟共聚物作为助稳定剂,采用种子乳液聚合法,合成出含氟丙烯酸乳液。该发明获得的含氟乳液不仅保留了聚丙烯酸乳液良好的成膜性、附着力、保光保     

超双疏含氟聚合物的研究进展

超双疏功能性材料在当代化工材料中有着重要的地位,其独特的界面性能使得其在各个领域的应用中大显身手。本文介绍了近年来国内外对含氟聚合物在超双疏领域的研究近况,包括超双疏含氟聚合物的结构特点和合成方法等。含氟聚合物的表面拥有超低的表面能和独特的空间排列方式,通过对比不同结构的含氟聚合物分子与其性能的关系以及对各类含氟聚合物合成方法的调研,发现含氟聚合物作为超双疏涂层材料的使用十分广泛,其结构中含氟单体主要为氟取代丙烯酸酯类,合成方法多为乳液聚合。超疏水含氟聚合物与纳米颗粒材料的结合是当今研究的热点,文中列举了大量研究实例,希望其中的研究方法和合成路线等能对今后该领域的研究起到一定的借鉴作用。     

含氟材料在金属防腐和表面防护方面的应用进展

含氟材料具有独特的物理化学性能,如耐热性、拒水疏油性和耐腐蚀性,目前已大量应用到电子信息、化工及各类工程建筑等领域。本文简要介绍了含氟聚合物和含氟表面活性剂在金属防腐和表面防护方面的应用,并对比了几种材料在该应用领域的优缺点,提出了一些改进方法和措施,对提高含氟材料在金属表面防腐与防护性能有重要意义。     

含氟类含能化合物研究进展

综述了含氟类含能化合物的合成及分子设计研究,主要包括单氟取代类、氟偕二硝基类、二氟氨基类、三氟甲基类以及五氟硫基类含能化合物;总结了含氟基团的优势和引入方法,以及具有代表性的含氟类含能化合物的合成路线和爆轰性能;归纳了目前含氟类含能化合物分子设计的研究路线以及可能存在的问题.     

含氟丙烯酸酯聚合物结构对性能的影响分析

将含氟基团引入丙烯酸酯合成的丙烯酸聚合物,不仅具有丙烯酸酯原有的各种性能优势,还可以赋予其更多含氟化合物的特性。介绍了含氟丙烯酸酯类聚合物的主要种类（均聚物、共聚物）及其典型的合成方法,总结分析了影响含氟丙烯酸酯类聚合物性能的关键因素,指出合成更加环保、成本低廉、性能媲美长链氟丙烯酸酯等优异表面性能的含氟丙烯酸酯类聚合物是未来研发方向。     

多重交联UV固化水性聚氨酯木器涂料的研制

通过UV固化和有机硅交联改性及多官能度扩链剂的引入,研制了多重交联UV固化水性聚氨酯木器涂料。形成的涂膜在UV固化前即具有较好的涂膜强度和机械性能,耐沾污;经UV固化后,涂膜具有更加优异的耐水性、耐醇性、耐磨性和耐干热性,以及良好的硬度和装饰效果。     

紫外光固化涂料中活性单体的选择

紫外光(UV)固化涂料是以采用辐射固化技术为特征的环保节能型涂料。固化材料的各组分中,预聚物是光固化树脂的主体,它的性能基本决定了固化后材料的主要性能。重点讨论各类不同丙烯酸酯官能度化合物在紫外光固化涂料中的选用及配合,讨论了它们对涂料表面附着力、硬度、耐磨、耐腐等性能的影响。     

新型含Si环氧丙烯酸酯纳米涂层的制备及性能

为了制备耐热、阻燃性能优异的新型含Si环氧丙烯酸酯(EA)纳米涂层,以KH-570改性纳米SiO2和有机硅改性EA作紫外固化(UV)组分,并在配方中加入纳米Mg(OH)2,制备了系列UV固化新型含Si EA纳米涂层。通过红外光谱仪、紫外可见光谱仪、SEM、氧指数仪、热重分析仪等研究了UV固化体系涂膜耐热、阻燃及光学性能。结果表明:在有机硅改性EA中添加KH-570改性纳米SiO2,可以提高纳米涂层热稳定性和阻燃性,同时使其保持优良透明性;当改性纳米SiO2含量达5%时,涂膜耐热、阻燃性能均最佳;同时在体系中加入纳米Mg(OH)2,可进一步改善体系的阻燃效果。     

Preparation and evaluation of epoxy methacrylate UV‐curable coatings containing phthalazinone

Epoxy methacrylate resin (EMA) UV‐curable coatings exhibit high reactivity, low viscosity and excellent chemical resistance in environmentally friendly coatings. A novel EMA containing phthalazinone moieties for high temperature resistant UV‐curable coatings was synthesized. The formulations were cured with hexanediol diacrylate (HDDA) and trimethylol propane triacrylate (TMPTA) as reactive diluents promoted by a photoinitiator, and then interpenetrating polymer networks were generated. The mechanical, chemical and thermal properties of the clear coatings were characterized using Chinese National Standard methods (GB). EMA was used with UV radiation curing in combination with 6.7 wt% of HDDA and 13.4 wt% of TMPTA, and the properties of the cured films were as follows: pencil hardness of 5 H, 30% NaOH resistance for 30 days, 15% HCl resistance for 10 days, 3% NaCl resistance for 30 days and 5% weight loss temperature of 300.5 °C. EMA UV‐curable coatings containing phthalazinone exhibit excellent chemical and thermal stability, and could be potential candidates for UV‐curable zero volatile organic compound coatings applied in the fields of salt spray corrosion, strong radiation and high‐temperature resistance. Copyright © 2009 Society of Chemical Industry     

Biodegradable lignin as a reactive raw material in UV curable systems

ABSTRACT

Radiation curing technologies, including ultraviolet (UV) and electron beam curing, have received increasing attention especially after the increasing concerns on energy consumption, environmental protection, and occupational health and safety. Ultraviolet (UV)-curable polymerization are progressively being utilized in numerous manufacturing since they can be speedily applied in addition to their outstanding physical properties such as excellent surface quality, productivity, and slow energy consuming.This paper briefly reviews the research milestones in the area of wood chemical modification, focusing on the basic principles and applications of UV curable systems and polymerization. The study also extends to highlight the effect of lignin incorporation into UV curable system on coating quality, thermal stability, chemical resistance and mechanical properties.     

UV固化胶粘剂的研究进展

从几方面综述了UV固化技术及其胶粘剂的一些新研究进展 :自由基光固化体系、阳离子光固化体系、混杂光固化体系、双重固化体系 ,并对今后开发工作提出了的建议。     

New UV curing systems for automotive applications

Recent developments of new UV curable resins, which meet the high demands of automotive applications (e.g. weather stability), in combination with a new lamp technology offer extremely fast drying of paints, giving complete curing within less than 2 min (in some cases even within seconds). Since the capacity of the painting/drying booth is the bottleneck in most body shops and OEM lines, this new technology offers a remarkable time saving advantage to the customer. The new technical standard is presented by a dual cure system due to the advantages of lower volume shrinkage and curing of shadow areas. The change of mar and chemical resistance depending on the amount of UV curable components in a one pack automotive clear coat is shown. The influence of both — temperature and distance — between the lamp and the painted object has been investigated by the decrease of UV curable double bonds in a given dual cure refinishing clear coat.     

衣康酸光固化树脂的研究进展

被誉为"绿色技术"的光固化技术,不仅节能环保而且经济高效,已在众多领域得以应用.利用天然可再生资源制备光固化树脂对光固化技术的可持续发展具有重要意义.衣康酸作为一种来源广泛的天然可再生资源,其分子结构中同时含有不饱和双键和两个羧基,可替代丙烯酸、己二酸等石化资源合成各种光固化不饱和树脂,所得树脂综合性能优良.本文综述了...     

UV光-暗双重固化体系的研究进展

综述了UV光-暗双重固化体系的研究现状,总结了UV光-暗双重固化中的UV光固化反应和暗聚合反应类型,并重点介绍了UV光-湿气、UV光-热、UV光-空气和复合型4种双重固化方式。与单一的UV光固化技术相比,UV光-暗双重固化能够很好地解决单一UV光固化体系存在的固化不完全等问题,且UV光-暗双重固化技术制得的固化膜普遍具有化学稳定性好、耐侯性优异、环境污染小等优点。     

An UV‐curable epoxy acrylate oligomer with high refractive index containing fluorene: Preparation,characterization, and application

In this article, a novel UV‐curable epoxy acrylate oligomer (BPEFPGMA) with high refractive index is successfully prepared through semi‐esterification reaction of 9,9‐bis[4‐(2‐hydroxyethoxy)phenyl]fluorene and phthalic anhydride, followed by end‐caping of glycidyl methacrylate. After 15 times’ repetitions, the process and properties of this oligomer are stable and reliable. The resulting BPEFPGMA exhibited low solvent content (≤1600 ppm), low viscosity (1900–2500 mPa s at 60°C), high refractive index (1.587 ± 0.003 at 20°C), and normal M_w (2550–3536 g/mol). The coating formulations of 1.57 UV‐curable glue are mixed with BPEFPGMA as reactive oligomer. Through the technology of UV‐curing forming, the corresponding brightness enhancement films are obtained. The resulting films exhibit normal structure, excellent adhesion (5B), good scratch resistance (50 g), and good abrasion resistance (50 g). They show excellent performance, and have reached the quality standard for use in liquid crystal display industry. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132, 42386.