含氟“三防”纺织助剂的合成方法及发展前景

目前所合成的含氟聚合物主要是含氟丙烯酸酯类共聚物,特别是含氟共聚物乳液,是将含氟单体与丙烯酸酯类单体或其它乙烯类单体通过乳液共聚而制得。该合成方法的条件简单、操作易控,可制得稳定的共聚物乳液,产物防水性、防油性、耐候性及耐腐蚀性都较好。     

含氟聚合物乳液的合成及应用

用含氟醇8.4g、丙烯酸1.5g对甲苯磺酸0.4g在N2气保护下于80-85℃进行酯化反应6-7h，制成含氟丙烯酸酯。含氟丙烯酸酯在复合乳化剂存在下分别进行均聚乳液聚合和共聚乳液聚合。再用制备的均聚、共聚乳液制成含氟聚合物乳胶漆，该漆除了具备一般丙烯酸酯漆的优点之外，还具有良好的防污、自洁、耐紫外线和耐候性，且对环境友好，是一种理想的外墙涂料。     

浅谈含氟丙烯酸酯共聚乳液研究进展

介绍了含氟丙烯酸酯的性能和用途,对含氟丙烯酸酯共聚乳液常规乳液聚合以及最新共聚方法进行了简单的介绍,总结出几种改进含氟丙烯酸酯体系表面性能的方法,并展望氟丙烯酸酯发展。     

含氟丙烯酸酯共聚物乳液的制备及性能研究

以丙烯酸全氟辛基乙酯为主要单体,采用乳液聚合法制备了含氟丙烯酸酯共聚物,通过红外光谱和激光粒度分析对共聚物进行了表征,测试了共聚物乳液的稳定性,研究了单体含量和交联剂对共聚物性能的影响,测定了共聚物于皮革表面的防水、防油性能,并对共聚物乳液处理的皮革表面进行了SEM分析。结果表明,含氟丙烯酸酯共聚物乳液防水等级9级,防油等级6级,具有良好的低表面性能。     

含氟丙烯酸酯共聚物乳液的制备及复配研究

溶液型含氟丙烯酸酯共聚物在使用中会产生环境污染，近年来人们更加重视乳液型含氟丙烯酸酯共聚物的开发和应用，常采用的方法有2种：通过乳液聚合将含氟丙烯酸酯单体和其他烯类单体共聚，以及将含氟丙烯酸酯聚合物乳液和其他乳液通过共混和偶联进行复配，本文对这2种方法进行了综述。     

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。     

水性含氟丙烯酸涂料的制备及性能研究

采用自制的端烯丙基丙烯酸丁酯-含氟丙烯酸酯嵌段共聚物(DMPA)与丙烯酸的乳液共聚,制备了一种水性含氟丙烯酸乳液。采用核磁分析、红外光谱、接触角等测试方法对水性含氟丙烯酸乳液涂层的性能进行了分析。结果表明,端烯丙基丙烯酸丁酯-含氟丙烯酸酯嵌段共聚物添加量为30%时,水性含氟丙烯酸乳液的疏水效果最好,且水性含氟丙烯酸乳液制备的涂料具有最佳的综合性能。     

水性彩色氟碳乳液的制备

合成了一种彩色可聚合染料,并与含氟丙烯酸酯类单体共聚,得到了一种水性彩色氟碳乳液。与传统乳液相比,该彩色丙烯酸酯乳液具有黏结性强、成膜性好、机械性能好及耐高温性、耐紫外光、耐雨水冲刷等优异性能,具有很好的着色性和不褪色性。     

氟化丙烯酸酯共聚乳液的研究进展

氟化丙烯酸酯共聚乳液具有优异的表面性能如耐污性、自清洁性等，因此受到国内外很多科研人员的关注；本文综述了近10年来通过在聚合物链中引入含氟基团得到氟化丙烯酸酯聚合物乳液的制备方法及相关性能特征的研究进展，并对国内氟化丙烯酸酯聚合物乳液的研究及在涂料等领域的应用提出了几点建议。     

含氟丙烯酸酯共聚乳液合成及性能研究

以甲基丙烯酸甲酯（MMA）、丙烯酸丁酯（BA）和全氟烷基丙烯酸酯等为主要原料,丙二醇为分子量调节剂,采用非离子阴离子复合乳化剂、氧化还原引发体系、超声微乳化技术,不同的加料方式制备出系列含氟丙烯酸酯乳液,并利用衰减全反射红外光谱（ATR-FTIR）对含氟丙烯酸酯共聚乳液胶膜进行了表征。采用接触角测定方法研究了含氟共聚乳液对织物整理后的表面性能变化,结果显示：乳液整理后的纯棉无纺布的拒水拒醇性大大提高,对水的接触角达到127o左右,对醇的最大接触角达到112o。乳液整理后的PP无纺布拒醇性明显改善,接触角达到101o左右。但拒水性能未见明显提高。     

Polymerization of fluoroacrylate and guar gum copolymer as a new pretreatment paste for ink‐jet printing of polyester

A novel pretreatment paste containing fluoroacrylate copolymer and modified Guar Gum was carried out on the polyester fabric to provide partial water repellency and printability after inkjet printed with water‐based disperse dye inks. The stable fluorinated pastes were prepared via miniemulsion polymerization of fluoroalkyl acrylates, styrene, 2‐ethylhexyl acrylate, and modified guar gum in the presence of AIBN as initiator, CTAB and polyoxyethylene polyaryl ether as surfactants under suitable reaction conditions. In the analysis of monomer conversion and particle size, the highest polymerization rate with smallest particle size was obtained with increasing concentration of surfactants and initiator but the decreasing degree of substitution of guar gum to imply stronger interactions between fluoroacrylate monomers, hydroxyl groups of modified guar gum and EO units of nonionic surfactants. The 30% of stock fluorinated paste with urea concentration of 6% provided the prints with highest K/S value, satisfactory edge acuity and least color difference between front and back sides of the fabric to show more transparency. The rating 80 of water repellency tested on the best treated polyester fabric demonstrated stain proof properties after sprayed with water and dried. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009     

Graft polymerization of 1,1-dihydroperfluorobutyl acrylate onto cellulose fabric

1,1-Dihydroperfluorobutyl acrylate was prepared and grafted onto cellulose fabric by means of γ-ray preirradiation to produce oil and water repellency. A 2% grafting was sufficient to impart oil and water repellency to cellulose fabric. In the case of 19.1% or 29.4% grafted fabrics, the grafting decreased rapidly with laundering, and the laundered fabric which possessed no oil and water repellency still had about 10% grafting of the perfluoro compound. Thus, the apparent graft polymerization takes place both on the surface and in the inner structure of the cellulose fiber; the polymer grafted onto the surface imparts oil and water repellency and is easily removed by laundering, whereas the polymer grafted onto the inner structure is hardly eliminated but does not impart oil and water repellency to the fabric.     

氟代聚丙烯酸酯无皂乳液整理剂的防水防油性能研究

本文采用无皂乳液聚合法,以全氟烷基酯（FEA）为功能单体,制备了一种氟代聚丙烯酸酯无皂乳液整理剂,并对其乳液颗粒粒径大小及分布和高分子溶液表面活性进行了研究。通过对棉织物进行防水防油整理应用实验,详细考察了该织物整理剂的使用质量百分数和烘焙温度对防水防油性能的影响,并测试了其他应用性能。结果表明,通过该防水防油剂处理的织物有优异的防水防油性能,处理后的织物表面动态防水性可达90分,防油性可达5级,对水的接触角可达142.5°,对石蜡油的接触角可达126?,并且有良好的耐水洗性和常规应用性能。     

Preparation and characterization of silica sol/fluoroacrylate core–shell nanocomposite emulsion

The silica sol/fluoroacrylate core?Cshell nanocomposite emulsion was successfully synthesized via traditional emulsion polymerization through grafting of KH-570 onto silica particles. Comparing the performance of the polyacrylate copolymer, the fluorinated polyacrylate copolymer and the silica sol/fluoroacrylate core?Cshell nanocomposite emulsion, we can come to a conclusion that the silica sol/fluoroacrylate core?Cshell nanocomposite emulsion presents significantly excellent performance in all aspects. The products were characterized by Fourier transform infrared (FTIR), photon correlation spectroscopy (PCS), transmission electron microscopy (TEM), thermogravimetry (TGA), Contact angle and UV?Cvis analyses techniques. The chemical structure of polyacrylate copolymer, fluorinated polyacrylate copolymer and silica sol/fluoroacrylate nanocomposite were detected by FTIR. The size and stability of emulsion latex particles were determined by PCS technique. TEM analysis confirmed that the resultant latex particle has the core?Cshell structure, obviously. The water absorption and contact angle data also showed that the silica sol/fluoroacrylate nanocomposite film has good hydrophobic performance. TGA analysis indicated the weight loss of the silica sol/fluoroacrylate nanocomposite film begins at around 350?°C which testifies its good thermal stability. The UV?Cvis spectroscopy analysis showed that the silica sol/fluoroacrylate nanocomposite film possess UV?Cvis shielding effect when the added volume amount of KH570 modified silica sol is up to 5?mL. Therefore, the excellent properties of hydrophobicity, thermodynamics and resistance to ultraviolet provide the silica sol/fluoroacrylate nanocomposite film with potential applications in variety fields. In addition, the formation mechanism of core?Cshell structure silica sol/fluoroacrylate nanocomposite latex particles was speculated.     

Development of Nanoemulsion of Silicone Oil and Pine Oil Using Binary Surfactant System for Textile Finishing

Nanoemulsions of silicone oil and pine oil using a binary surfactant system were prepared. Silicone oil and pine oil were used to achieve softness and mosquito repellency and antibacterial activity respectively when the nanoemulsion was applied on the fabric. A silicone surfactant (AG-pt) and a hydrocarbon surfactant (TDA-6) were used in different proportions to obtain stable nanoemulsions at the lowest possible droplet size. The various emulsification process variables such as ratio of hydrocarbon to silicone surfactant, surfactant concentration, ratio of silicone oil to pine oil, oil weight fraction and sonication time have been studied. The optimal variables include the ratio of hydrocarbon to silicone surfactant of 80:20, surfactant concentration of 8%, ratio of silicone oil to pine oil of 80:20, oil weight fraction of 20% and 15 min of sonication time at 40% of the applied power. Nanoemulsions were found to be very stable with emulsion droplet size around 41 nm. In order to compare different emulsification techniques, emulsions were also prepared using the conventional method. Emulsions analyzed using SEM showed spherical droplets ranging from 40 to 120 nm. Atomic force microscopy was used to evaluate the bounciness, fluffiness and softness of fabric. From this study, it was found that stable nanoemulsion with a lowest possible droplet size of silicone and pine oil could be prepared by ultrasonic emulsification technique in order to deliver multiple properties when applied to fabric.     

含氟丙烯酸酯共聚物乳液

介绍了含氟丙烯酸酯的共聚和共混改性的方法与应用。     

改性苯乙烯-丙烯酸酯防水防油剂的研究

以甲基丙烯酸十二氟庚酯(FM)、丙烯酸丁酯(BA)、苯乙烯(St)、甲基丙烯酰氧乙基三甲基氯化铵(DAC)、丙烯酸十八酯(ODA)为原料,采用无皂乳液聚合,制得了阳离子含氟丙烯酸酯多元共聚物乳液,并对聚合物的结构、组成进行了表征,研究了引发剂、FM的用量对乳液耐水性和稳定性的影响。单独使用含氟乳液对纤维类织物进行表面涂敷,水和油滴在织物上所成的接触角最大可分别达到135°和87°,同时织物的抗张强度、耐折度、平滑度分别提高13.45%、15.38%和60.52%。     

Wash fastness of fluorocarbon finishes on polyester fabrics

A fabric's surface tension provides a measure of its ability to repel water and oil, while water penetration can be evaluated from a fabric's hydrostatic pressure, which depends mainly on the pore size and thus on the weave. One way of making a surface hydrophobic is to coat it with fluorinated polymers, which confer a low surface tension, reducing the fabric's wettability while preserving its breathability. We have shown that polyester microfibre fabrics (which already have a tight weave and hence high hydrostatic pressure) can be treated with fluorinated finishes to increase water and oil repellency. Observation of a piece of fluorinated polyester microfibre fabric over a number of washings has shown that a regenerative heat treatment preserved the repellency of the fabric but had little influence on the decrease in hydrostatic pressure that occurs with washing.     

有机硅改性聚丙烯酸酯粘合剂的合成及性能表征

以过硫酸钾(KPS)为引发剂、苯乙烯(ST)为硬单体、丙烯酸异辛酯(EHA)和丙烯酸丁酯(BA)为软单体、丙烯酸(AA)为功能单体,端乙烯基硅油为有机硅改性剂,制备了有机硅改性聚丙烯酸酯乳液;并将其作为粘合剂配成印花色浆,应用于棉织物的涂料印花中。研究了端乙烯基硅油用量对乳液聚合反应、乳胶膜性能及印花色浆的印花性能的影响,并对有机硅改性聚丙烯酸酯乳液进行了红外光谱及电镜表征。结果表明,端乙烯基硅油用量为单体总质量的6.5%时,乳液外观、胶膜性能及印花性能都较好。