耐沾污涂料

含氪聚硅氧烷抗沾污剂、含该抗沾污剂的耐划伤可固化聚硅氧烷涂料及其涂覆的物件,耐沾污改性有机硅涂料及其高效的涂装方法,     

氟碳树脂的合成及有机硅改性

以偶氮二异丁腈为引发剂．甲基异丁基甲酮为溶剂，将氟碳单体与甲基丙烯酸甲酯、丙烯酸乙酯、丙烯酸丁酯等单体进行溶液聚合得到氟碳树脂共聚物。当氟碳单体质量分数较低(5％)时，加入质量分数为2％～8％的有机硅烷偶联剂单体，制得有机硅改性氟碳树脂共聚物。性能测试结果表明：该有机硅改性共聚物具有硬度高、耐水、耐碱、耐溶剂、表面自洁及耐沾污等优良性能。有机硅改性不但提高了氟碳树脂的性能，而且降低了成本，为其工业化生产和制备有机硅改性全氟碳涂创造了条件。     

新型乳胶漆用疏水剂的研制

本以有机硅和石蜡为主要原料，制备了一种乳液型乳胶漆用疏水剂。评价了疏水剂的稳定性及其他性能指标，讨论了其对涂料性能的影响。结果表明，将该疏水剂作为一种功能性组分加入到乳胶漆体系中，能够大大地提高乳胶漆的耐沾污性、耐洗刷性和耐候性：     

有机硅涂料性能改进及应用研究进展

有机硅是第一个获得广泛应用的元素有机高分子化合物，因其独特的化学结构而具有优异的性能，广泛应用于国民经济的各个领域，在涂料工业中亦占有相当重要的地位。有机硅涂料是以有机硅聚合物或有机硅改性聚合物为主要成膜物质的涂料，它具有优良的耐热耐寒、电绝缘、耐电晕、耐辐射、耐潮湿和僧水、耐候、耐沾污及耐化学腐蚀等性能，近年来在产品性能改进及应用方面都得到了迅速发展。     

硅丙乳液聚合稳定性能研究：乳液配方的影响

有机硅改性丙烯酸乳液是制备超耐候性建筑外墙涂料的理想基料。硅丙乳胶漆具有优异的耐候性能、耐水性、耐碱性、耐沾污、耐擦洗等性能。聚合稳定性是考核乳液聚合反就原征要指标,试验证明,引发剂、乳化剂、单体组成及其配比均对硅丙乳液取聚合稳定性存在影响。     

硅丙树脂乳液合成的研究

本文采用乳液聚合方法制备有机硅改性丙烯酸酯乳液。系统地研究了温度、乳化剂、引发剂对乳液的固含量、成膜性、耐水性、Ca^2 稳定性、机械稳定性等的影响，以及对由有机硅改性丙烯酸酯乳液配成的涂料的耐水性、耐沾污性等的影响。     

全氟碳涂层的耐沾污性能测试研究

在参考相关文献中关于涂层耐沾污测试方法的基础上,结合国内涂层的耐沾污性测试标准,对有机硅乳液涂料(A)、丙烯酸酯乳液涂料(B)和全氟丙烯酸酯乳液涂料(C)进行耐沾污性测试对比,结果表明:总体耐沾污性顺序为C>A,B,同时证明了全氟丙烯酸酯涂料具有优秀的耐水性、耐酸碱性和耐沾污性能。     

一种机车车辆用聚硅氧烷改性聚酯涂料研究

以有机硅改性的聚酯树脂为主要成膜物质,超支化的聚酯树脂和有机硅改性的羟基丙烯酸树脂为辅助成膜物质,对涂层进行附着力、硬度、抗石击、耐人工加速老化和耐沾污等性能测试,结果表明:与机车用丙烯酸聚氨酯涂料相比具有良好的外观、耐候性和耐沾污性能,此外该涂料还具有较高的施工固含,施工VOC含量低,具有绿色环保的施工性能,在不需要高温烘烤的条件下能进行常温固化,方便施工。     

氟硅改性丙烯酸弹性乳液的研制

将有机硅单体、有机氟单体与丙烯酸酯类单体进行共聚,采用无皂核壳乳液聚合技术制备了一种高性能氟硅改性丙烯酸弹性乳液,研究了聚合工艺、引发剂浓度、功能单体、交联单体等因素对乳液性能的影响。结果表明,氟硅改性丙烯酸弹性乳液性能优于常规弹性乳液,用其制备的弹性涂料拉伸性能及耐沾污性好。     

氟碳树脂的合成及有机硅改性

以偶氮二异丁腈为引发剂,甲基异丁基甲酮为溶剂,将氟碳单体与甲基丙烯酸甲酯、丙烯酸乙酯、丙烯酸丁酯等单体进行溶液聚合得到氟碳树脂共聚物。当氟碳单体质量分数较低(5％)时,加入质量分数为2％～8％的有机硅烷偶联剂单体,制得有机硅改性氟碳树脂共聚物。性能测试结果表明：该有机硅改性共聚物具有硬度高、耐水、耐碱、耐溶剂、表面自洁及耐沾污等优良性能。有机硅改性不但提高了氟碳树脂的性能,而且降低了成本,为其工业化生产和制备有机硅改性全氟碳涂料创造了条件。     

污损释放型涂料的防污与减阻性能研究

制备了一种以有机硅树脂为基体树脂的污损释放型涂料,并对其防污性能与减阻性能进行了研究。结果发现,硅油能够渗出到涂层的表面,引起表面形貌和表面能的强烈变化。随着硅油渗出量的增加,涂层表现出的"结构表面能"越大,并有利于防污性能的增强。污损释放型涂层的表面粗糙度远小于通用自抛光型涂层的表面粗糙度,并且在不同雷诺数下均表现出了良好的减阻效果。所研制的污损释放型涂料同时具有良好的防污性能与减阻性能,能够为我国商品化环境友好型防污减阻涂料的研发提供借鉴。     

Development of polyorganosilazane–silicone marine coatings

The objective of the present work is the development and characterization of marine coatings based on polyorganosilazanes (PSZ). Two types of coatings containing silicone oils and biocidal compounds were investigated as anticorrosive and antifouling coatings. The flexibility, hydrophobicity and adhesion properties of the PSZ-based coatings on aluminum substrates were studied. Static immersions in natural seawater were investigated to evaluate the antifouling performances of these coatings. The corrosion properties were studied by salt spray tests. Results demonstrated that coatings based on silicone oils appeared to be the most efficient coatings in terms of antifouling and anticorrosive properties. Ten-month antifouling efficiency was revealed for biocide-free polydimethylsiloxane-based PSZ coatings in natural seawater static immersion. The adjunction of dicopper oxide as biocidal pigments was shown to decrease the stability in cans of the corresponding paints and therefore decreasing the flexibility of coatings. In addition, this pigment affected badly the anticorrosive properties of the coatings together with a short antifouling efficiency time. Thus, the silicone oil-based PSZ displayed remarkable advantages in addition to their dual antifouling and anticorrosive properties which are the absence of biocidal compounds released in marine environment and the absence of volatile solvent.     

有机硅改性氟碳防污涂料表面接触角和防污效果的研究

运用冷拼法制备了氟硅树脂并配制了氟硅防污涂料,研究了氟硅防污涂料一年实海挂板的接触角及防污效果的变化。结果表明,氟硅防污涂料接触角随时间的变化而变小,防污效果优于氟碳防污涂料和有机硅防污涂料。     

Improved protein resistance of silicone hydrogels by grafting short peptides for ophthalmological application

A simple and facile approach to impart the antifouling properties of silicone hydrogels was developed in this report. Short peptides were first tethered to silicone hydrogels through terminal amino group-induced epoxy ring-opening click reaction. The modified silicone hydrogels have improved hydrophilicity and protein adsorption resistance because of the formation of zwitterionic structure of the grafted peptides. Furthermore, glycylglycine and diglycyl glycine-modified silicone hydrogel contact lenses were fabricated. They exhibited favorable antifouling property and no damage to rabbits’ eyes after continuous wearing. The short peptide modified silicone hydrogel contact lenses have potential application in ophthalmology.     

Preparation and properties of crosslinked network coatings based on perfluoropolyether/poly(dimethyl siloxane)/acrylic polyols for marine fouling–release applications

α,ω‐Triethoxysilane terminated poly(dimethyl siloxane) (PDMS) oligomer, α,ω‐triethoxysilane terminated perfluoropolyether (PFPE) oligomer, and acrylic polyols were first synthesized via an addition reaction and free‐radical polymerization. Then, crosslinked network coatings based on PFPE/PDMS/acrylic polyols for marine fouling‐release applications were prepared by a condensation reaction. The structure of the crosslinked network coating was characterized by Fourier transform infrared spectroscopy. The chemical composition of the coating surface was characterized by X‐ray photoelectron spectroscopy. The thermal properties, surface energy, mechanical properties, adhesion, and antiseawater immersion performance of the coatings were systematically studied. The antibiofouling properties of the crosslinked network coating were evaluated by laboratory biofouling assays with the bacteria Escherichia coli and the fouling diatom Navicula. The results from the preliminary study suggested that this crosslinked network coating had good adhesion and promising antifouling properties that were comparable to a silicone standard. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132, 41860.     

有机硅和氟树脂在海洋防污涂料中的应用研究进展

海洋生物污损是一个世界性难题,随着人们环境保护意识的增强,发展有效的环保型海洋防污体系成为该领域最重要的研究方向。有机硅/氟基海洋防污涂料具有环保无毒的特点,是目前的研究热点之一。文章概述了有机硅和氟低表面能防污涂料的研究进展,重点介绍了基于仿生原理的有机硅/氟污损释放型防污涂料,论述了材料表面特性包括物理特性、化学特性、结构特征等对生物附着的影响,介绍了两亲性添加剂改性的有机硅防污涂料的开发,展望了污损释放型防污涂料未来的发展方向。     

Imparting antifouling properties of silicone hydrogels by grafting poly(ethylene glycol) methyl ether acrylate initiated by UV light

Both hydrophilic and antifouling surfaces were prepared on silicone hydrogels with poly(ethylene glycol) methyl ether acrylate (PEGMA) grafted by UV-induced radical polymerization. The PEGMA-grafted silicone hydrogels were characterized by graft yield and static water contact angle measurements. According to the results, the graft yield reached a maximum at 8 min of UV exposure time and 20 wt% PEGMA concentration. The modified silicone hydrogels possessed hydrophilic surfaces with the lowest water contact angle of 36°. The oxygen permeability and transparency of the PEGMA-grafted silicone hydrogels were as high as the unmodified silicone hydrogel. The mechanical property of silicone hydrogels was maintained at about 95% of the tensile strength and elastic modulus after the PEGMA grafting. The in vitro single protein adsorption on the PEGMA-grafted silicone hydrogels decreased by 70–80% compared to the unmodified silicone hydrogel. The PEGMA-grafted silicone hydrogel is expected to be a novel biomaterial, which possesses excellent surface hydrophilicity, antifouling property, oxygen permeability, and mechanical property. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012     

防污涂料的研究及其发展

叙述了海洋防污涂料的类型与研究现状,介绍了新型环保的低表面能防污涂层技术在海洋防污方面的应用,重点介绍了有机硅涂料、有机氟涂层以及绿色防污涂料国内外研究进展和应用现状,展望了海洋防污涂料技术发展前景.     

有机硅低表面能防污涂料控制因素与研究进展

简述了海洋牛物的污损原理,介绍了有机硅低表面能防污涂料的主要特性,分析了影响其防污性能的主要因素,概述了该涂料的研究进展及试验研究方法,指出低表面能防污涂料是未来发展的重点,进一步改进和发展有机硅低表面能防污涂料具有很大的空间.     

低表面能材料上海洋生物附着的研究

考察了不同表面状态的聚四氟乙烯材料和含有机氟、有机硅涂层的防污性能。低表面能材料上的污损生物附着不牢。聚氨酯、醇酸、氯醋乙烯等树脂为基料的涂层防污性差;而涂层中有机硅橡胶的含量比聚四氟乙烯更有利于防止海洋生物的附着。