聚氨酯树脂及其涂料

<正>201501008大豆油改性阳离子型聚氨酯涂料的热机械性能和抗菌性能的研究[刊,英]/Garrison,Thomas F.等//Macromolecular Materials and Engineering.2014,299(9).-1042~1051采用不同羟基含量的乙二醇胺制备了一系列具有抗菌性能的大豆油改性阳离子型聚氨酯涂料,并采用不同羟基含量的大豆油多元醇制备了另一系列聚氨酯涂料。试验表明:所有阳离子型聚氨酯分散体及其涂     

聚氨酯树脂及其涂料

<正>201512001 ZnO纳米粒子的合成及其对聚氨酯复合涂料抗菌性、防腐性和机械性能的影响[刊,英]/El Saeed,Ashraf M.等//Dyes and Pigments.-2015,121.-282-289采用直接沉积法制备了ZnO纳米粒子(ZnO NPs)。透射电镜图(TEM)显示,合成的ZnO纳米粒子呈球状,其平均粒径为20.0 nm。采用声波降解法,将0.1%~2.0%的ZnO NPs均匀混合在双组份聚氨酯中,制备ZnO聚氨酯纳米复合涂膜,该复合涂膜对革     

杀菌防霉涂料

201205113自分层抗菌型聚氨酯涂料[刊,英]/Yagci,M.B.等//Progress in Organic Coatings.-2011,72(3).-305～314本研究制备了能自分层的抗菌聚氨酯涂料。通过缩聚     

聚氨酯抗菌涂料的研究进展

本文根据抗菌方式的不同介绍了聚氨酯抗菌涂料的抑制细菌附着和杀菌 2种机理,以及基于这 2种抗菌机理的聚氨酯抗菌涂料的研究进展。基于抑制细菌附着机理的聚氨酯与不同抗菌物质结合形成了抑制细菌附着的抗菌;基于杀菌机理的聚氨酯与天然、无机、有机抗菌剂等活性抗菌剂结合,通过设计修改聚氨酯结构形成了有杀菌作用的抗菌涂料;展望了聚氨酯抗菌涂料的发展。     

杀菌防霉涂料

<正>201409019用于石质纪念碑的纳米复合抗菌涂料及其制备[刊,英]/Aflori,Magdalena等//Materials ScienceEngineering,B:Advanced Functional Solid-State Materials.-2013,178(19).-1339~1346本文研究了两种用于石质纪念碑的抗菌涂料,该涂料含有钛和/或银纳米粒子,以甲基丙烯酸为结构单元的倍半硅氧烷纳米复合物,适用于纪念碑的保护性涂装。在硝酸银和伯胺表面活性剂存在下,     

纳米粒子及其改性涂料

本文叙述了纳米粒子的基本特性、表面改性技术、纳米粒子改性涂料的制备。论述了纳米粒子在抗菌防污、随角异色涂料、紫外线屏蔽涂料、吸波隐身涂料以及提高普通涂料性能等方面的应用。分析了纳米粒子及改性涂料的应用现状和发展趋势。     

导电涂料

201004055用于制备导电涂料的含有银粒子的涂料组合物：基于水分散银粒子的题述组合物含有5％～40％（质量分数,下同）粒径≤150nm的银纳米粒子、50％～99．5％水和≤30％有机溶剂、0．01％～15％聚合分散剂、0～5％助剂和0～5％导电水溶性聚合物。     

杀菌防霉涂料

200606136 含纳米银粒子的杀菌涂料及其涂装工艺；200606137 杀菌外壳和/或带有完整触摸式屏幕的外壳；200606138 用于洗衣机、滚筒等掺杂或涂覆了杀菌剂的结构件;200606139 长效防霉抗菌涂料及其制备方法；200606140 一种纳米金属银抗菌涂料及其制备方法。     

纳米SiO2杂化聚氨酯丙烯酸酯及其UV涂料

简述了提高UV树脂、UV涂料硬度及耐磨性的常见方法,为了克服无机粒子在UV树脂、UV涂料中分散不均及易沉降等不足,介绍并制备了一种紫外光(UV)固化纳米SiO2杂化聚氨酯丙烯酸酯及其涂料,该杂化聚氨酯丙烯酸酯及其涂料具有较低的黏度和较低的纳米粒子含量,经紫外光充分固化后,涂层硬度高,耐磨性好,在木地板、橱柜板等家具行业...     

辅助材料

200801217 粒子或粉末状憎水、水不溶聚氨酯增稠剂及其在稠水性体系中的应用；200801218 基于淀粉和纤维素衍生物的涂料用增稠剂；200801219 高阻燃性可膨胀石墨的制备方法；200801220 聚脲化合物；200801221 一种可显著降低涂料黏度的涂料助剂及其制备方法……     

UV-curable nano-silver containing polyurethane based organic–inorganic hybrid coatings

The preparation of nano-silver containing polyurethane based UV-curable organic–inorganic hybrid coatings that have antibacterial activity is presented in this paper. Trimethoxysilane end-capped bis[(4-β-hydroxyethoxy)phenyl] methyl phosphine oxide urethane was synthesized as a coupling agent and used to improve the compatibility between the organic and inorganic phases of the hybrid coating. Due to its strong antibacterial activity, silver nanoparticles were prepared and added to the nanocomposite formulations. The relationships between the amount of coupling agent and the final coating properties were investigated. The hybrid coatings presented good thermal stability. Tests for abrasion, hardness, gloss, and adhesion of the coatings were also performed. The morphological investigation was performed by SEM to determine the size of the silver nanoparticles. The nano-silver containing coatings exhibited good antibacterial activity against E. coli and S. aureus.     

An antibacterial coating based on a polymer/sol-gel hybrid matrix loaded with silver nanoparticles

In this work a novel antibacterial surface composed of an organic-inorganic hybrid matrix of tetraorthosilicate and a polyelectrolyte is presented. A precursor solution of tetraethoxysilane (TEOS) and poly(acrylic acid sodium salt) (PAA) was prepared and subsequently thin films were fabricated by the dip-coating technique using glass slides as substrates. This hybrid matrix coating is further loaded with silver nanoparticles using an in situ synthesis route. The morphology and composition of the coatings have been studied using UV-VIS spectroscopy and atomic force microscopy (AFM). Energy dispersive X-ray (EDX) was also used to confirm the presence of the resulting silver nanoparticles within the thin films. Finally the coatings have been tested in bacterial cultures of genus Lactobacillus plantarum to observe their antibacterial properties. It has been experimentally demonstrated that these silver loaded organic-inorganic hybrid films have a very good antimicrobial behavior against this type of bacteria.     

Antibacterial activity of DLC and Ag–DLC films produced by PECVD technique

Diamond-like carbon (DLC) films have been the focus of extensive research in recent years due to its potential application as surface coatings on biomedical devices. Doped carbon films are also useful as biomaterials. As silver (Ag) is known to be a potent antibacterial agent, Ag–DLC films have been suggested to be potentially useful in biomedical applications. In this paper, DLC films were growth on 316L stainless steel substrates by using Plasma Enhanced Chemical Vapour Deposition (PECVD) technique with a thin amorphous silicon interlayer. Silver colloidal solution was produced by eletrodeposition of silver electrodes in distilled water and during the deposition process it was sprayed among each 25 nm thickness layer DLC film. The antibacterial activity of DLC, Ag–DLC and silver colloidal solution were evaluated by bacterial eradication tests with Escherichia coli (E. coli) at different incubation times. With the increase of silver nanoparticle layers in Ag–DLC, the total compressive stress decreased significantly. Raman spectra showed the film structure did not suffer any substantial change due to the incorporation of silver. The only alteration suffered was a slightly reduction in hardness. DLC and Ag–DLC films demonstrated good results against E. coli, meaning that DLC and Ag–DLC can be useful to produce coatings with antibacterial properties for biomedical industry.     

三氯生/SiO_2杂化抗菌材料的耐热性能

研究了以正硅酸乙酯(TEOS)、三氯生和γ-氨丙基三乙氧基硅烷(KH-550)为原料制备的缓释型有机/无机复合抗菌材料的耐热性能。采用SEM、FTIR和DSC/TG等方法表征了样品的颗粒形貌、表面基团和热稳定性,通过抑菌圈实验表征了经灼烧后样品的溶出抗菌性。研究发现,该有机/无机复合抗菌材料具有较好的耐热性能,于200℃加热30 min可大部分保留其抗菌性能。将该样品用于粉末涂料中,获得了抗菌率>99%的粉末涂料涂层。     

纳米抗菌粉体材料的制备与应用研究

本研究采用纳米粒子制备技术，制成的纳米磷酸锆载银抗菌粉体材料，具有颗粒尺寸小，抗菌谱广，高效，无毒，持久和耐热等特点，在日用陶瓷釉中添加量为2.0wt%时，抗菌陶瓷餐具的抗菌率可以达到99.9%以上。     

Antibacterial Thin Films on Glass Substrate by Sol–Gel Process

Antibacterial transparent thin films, containing different amounts of silver ion, have been prepared on a glass substrate by the sol–gel process. Thin films were obtained from inorganic-organic hybrid sols derived from 3-(glicydiloxypropyl)trimethoxy silane, N-(2-aminoethyl)-3-aminopropyl-trimethoxysilane and aluminium-sec-butoxide/ethylaceto-acetate complex and doped with silver ions. The films were characterized by Scanning Electron Microscopy and Raman Spectroscopy. The physical properties of the films were studied by solar-box, taber abraser, hardness test pencil, scratch-adhesion test and spectroscopy. The antibacterial activity of the coatings were investigated against gram negative Escherichia coli and gram positive Staphylococcus aureus. The results showed that 1% doping of the transparent hybrid thin film with silver ions resulted in high antibacterial properties of the film.     

Facile preparation and good performance of nano-Ag/metallocene polyethylene antibacterial coatings

Metallocene polyethylene/nano-silver coatings were prepared by a facile air-spray method on polymer films. Different from the prevailing strategy to endow polyethylene with antibacterial performance, we used metallocene polyethylene sol and nano-silver as a precursor to deposit coatings on polymers at a relatively low operating temperature. Antibacterial coatings with excellent mechanical properties, water resistance, and low silver release were achieved. The composite coatings were examined in terms of surface characteristics, mechanical properties, and antibacterial activity against two representative bacterial strains including Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). The composite coatings exhibited favorable microstructure, good mechanical properties, and suitable crystallinity. The antimicrobial tests indicated that the fabricated composite coatings showed promising antibacterial activity against E. coli and S. aureus. Furthermore, Ag ions released by the composite coating after 30 days were under 1.2 ppb. These results indicated a promising prospect of the composite coating for wide antibacterial applications.     

The Chemical and Biological Properties of Nanohydroxyapatite Coatings with Antibacterial Nanometals,Obtained in the Electrophoretic Process on the Ti13Zr13Nb Alloy

The risk of an early inflammation after implantation surgery of titanium implants has caused the development of different antimicrobial measures. The present research is aimed at characterizing the effects of nanosilver and nanocopper dispersed in the nanohydroxyapatite coatings, deposited on the Ti13Zr13Nb alloy, and on the chemical and biological properties of the coatings. The one-stage deposition process was performed by the electrophoretic method at different contents of nanomaterials in suspension. The surface topography of the coatings was examined with scanning electron microscopy. The wettability was expressed as the water contact angle. The corrosion behavior was characterized by the potentiodynamic technique. The release rate of copper and silver into the simulated body fluid was investigated by atomic absorption spectrometry. The antibacterial efficiency was evaluated as the survivability and adhesion of the bacteria and the growth of the biofilm. The cytotoxicity was assessed for osteoblasts. The results demonstrate that silver and copper increase the corrosion resistance and hydrophilicity. Both elements together effectively kill bacteria and inhibit biofilm growth but appear to be toxic for osteoblasts. The obtained results show that the nanohydroxyapatite coatings doped with nanosilver and nanocopper in a one-stage electrophoretic process can be valuable for antibacterial coatings.     

环氧—聚氨酯互穿聚合物网络导电涂料

研究了以环氧－聚氨酯互穿聚合物网络（ＥＰ－ＰＵＩＰＮ）为基料,镀银铜粉为导电填料的导电涂料。用扫描式电子显微镜（ＳＥＭ）观察了不同配比ＥＰ－ＰＵＩＰＮ的两相相容性,用差示扫描量热法（ＤＳＣ）测定了ＩＰＮ的玻璃化温度。讨论了ＥＰ－ＰＵＩＰＮ的结构及选择,镀银铜粉的粒度及含量对导电涂料的电阻率和使用性能的影响。试验表明,９０／１０ＥＰ－ＰＵＩＰＮ作为基料,镀银铜粉的含量为８０％、粒度为４００目,涂膜的电阻率低,使用性能好。     

离子交换法合成非晶态铝硅酸盐抗菌材料研究

合成了以非晶态铝硅酸盐为基体,银离子作为主要抗菌成分的无机抗菌剂粉体。通过改变离子交换反应中溶液的抗菌离子浓度、反应时间等因素,探讨了用离子交换法制备载银非晶态铝硅酸盐抗菌粉体的最佳工艺和条件。利用电子显微镜扫描技术、X射线衍射技术和抗菌性能测试,对非晶态铝硅酸盐及其抗菌材料的结构与性能进行表征与考察。研究表明：非晶态铝硅酸盐粒径较小,粒径分布范围窄,具有良好的离子交换和吸附性能。恒温下载银的离子交换反应,必须严格控制pH值,应注意银离子浓度不宜大于0．3mol／L。同时载入锌离子或铜离子,并不与银离子明显地互相干扰,相反有利于稳定无机抗菌剂中银离子的存在。所合成的抗菌材料样品,对大肠杆菌、金黄色葡萄球菌、枯草芽胞杆菌和绿脓杆菌等,均表现出良好的抗菌、抑菌性能。