共查询到20条相似文献,搜索用时 15 毫秒
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介绍了核-壳乳液聚合、乳液互穿聚合物网络、无皂乳液聚合、微乳液与细乳液聚合等方法与技术在制备功能性丙烯酸酯乳液中的应用。阐述了有机硅、有机氟、聚氨酯、环氧树脂等改性方法用于制备功能性丙烯酸乳液的研究进展。详细介绍了功能性丙烯酸乳液在功能涂料、胶黏剂、皮革涂饰剂、油墨等领域的应用现状,提出了功能性丙烯酸酯乳液的发展趋势:采用新的聚合技术、改性技术制备具有附加值高、性能优异且环境友好的水性功能性乳液是今后丙烯酸酯乳液的主要发展方向。 相似文献
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Jin Wang Xing-Rong Zeng Hong-Qiang Li 《Journal of Coatings Technology and Research》2010,7(4):469-476
The soap-free fluorine-containing acrylate latices were prepared by the pre-emulsification and semicontinuous polymerization
method, with perfluorooctylethyl methacrylate (PFEA) as fluorinated acrylate monomer and monophosphoric acid allyloxy nonylphenoxy
poly(ethyleneoxy)(10) ether as reactive emulsifier. The structure and property of latex polymers were characterized by laser particle size analyzer,
attenuated total reflectance spectra of infrared, X-ray photoelectron spectroscopy (XPS), and thermogravimetric analysis.
The effects of polymerization conditions on the conversion and polymerization stability were discussed in detail and the optimal
polymerization condition was obtained. XPS analysis indicates that the perfluoroalkyl groups have the tendency to enrich at
the film–air interface. With the increasing of PFEA amount, the water absorption of the film decreases and the water contact
angle of the film increases. At the same time, the thermal stability of the copolymer is greatly enhanced with the increasing
of PFEA amount. 相似文献
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基于互穿网络聚合法合成了丙烯酸酯乳胶涂料乳化剂,选用二烷基磺基琥珀酸盐、聚氧乙烯烷酚基醚、聚二甲基硅氧烷、聚氨酯类增稠剂、乙二醇、2-甲基-4-噻唑啉-3-酮、5-氯-2-甲基-4-异噻唑啉-3-酮等助剂,加入不同的颜料,完成丙烯酸酯乳胶涂料的制备,并分别对其防腐耐霉性、摩擦系数、耐磨性、抗冲击性能进行分析.结果表明:... 相似文献
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生漆广泛应用于工业和生活中,但是其致敏性、苛刻的固化成膜条件给生漆的使用带来很大的麻烦。本文利用辛胺、1,8-辛二胺,1,10-癸二胺、十二胺、十六胺对漆酚进行结构改性,采用IR、TG、SEM对产物的结构和形貌进行研究,从表干时间、硬度、耐冲击性、耐化学介质腐蚀性能、凝胶率等方面研究了改性后漆膜的性能。研究结果表明,经过脂肪胺改性后漆酚结构发生改变,几乎无致敏性并且改性漆酚膜的固化时间大大缩短,该系列脂肪胺改性漆膜耐酸碱腐蚀性也有很大提高,可应用在涂料和海洋防腐材料中。 相似文献
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Cationic latexes based on styrene and butyl acrylate using cetyl trimethyl ammonium bromide (CTAB) as surfactant were carried out using both batch and semicontinuous emulsion polymerization. Monomer conversion, particle size and its distribution, ζ potential, latex surface tension were determined as function of CTAB levels. Evolutions of these properties were followed, and the results from batch compared to those from semicontinuous process. It was revealed that polymerization rate in batch process was enhanced with CTAB, and the polymerization rate was controlled by addition rate of the preemulsion in semicontinuous process. Molecular adsorption area of CTAB on latex particle surface was calculated, which showed clearly that ζ potential and surface tension in the latex were directly related with surfactant adsorption on the particle surface. The molecular surface adsorption area of CTAB on latex particle could be used to explain the evolution of latex properties such as ζ potential and latex surface tension. 相似文献
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Fluorinated acrylate latex was prepared by copolymerizing fluorinated monomer, butyl acrylate, and methyl methacrylate, which was initiated by potassium persulfate in the water. The resultant fluorinated latex and its film were characterized with contact angle determinator, dynamic light scattering detector, and differential scanning calorimetry, respectively. Influence of type of fluorinated monomers on colloidal and polymer properties of fluorinated acrylate latex was studied. Results show that the coagulation rate, particle size, contact angle, glass transition temperature, and chemical resistance are increased with the increase of the number of fluorine atom in the fluorinated monomer. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012 相似文献
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Preparation and properties of dual-cure polyurethane acrylate 总被引:1,自引:0,他引:1
Dual-cure polyurethane acrylates (PUA) with different double bonds content were synthesized by using aliphatic polyisocyanate and 2-hydroxyethyl acrylate (HEA). The molecular structures were identified by Fourier transform infrared (FTIR) spectrum and nuclear magnetic resonance (NMR). Molecular weight (Mw) and glass-transition temperature (Tg) of PUA were measured by gel permeation chromatography and DSC, respectively. The pendulum hardness, pencil hardness, flexibility and abrasion resistance properties of dual-cure system were tested, the results indicated that the pendulum hardness, pencil hardness, and MEK resistance increased, but the flexibility reduced with the double bonds content increased. The mechanical properties of dual-cure system were greatly improved after the heat treatment. 相似文献
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壳层含硅的丙烯酸酯核壳乳液研究 总被引:1,自引:1,他引:1
以半连续滴加法制备壳层含γ-(甲基丙烯酰氧基 ) -丙基三甲氧基硅烷的丙烯酸酯核 -壳乳液。探讨了聚合条件对聚合反应的影响 ,并确定了最佳聚合条件。以红外光谱 (IR)、热分析仪 (TGA、DSC)、动态表面能分析仪、透射电子显微镜 (TEM)表征乳胶的性质及结构。 相似文献
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Ultraviolet (UV)-curable polyurethane acrylate ionomer (PUAI) prepolymers were synthesized from isophorone diisocyanate (IPDI), poly(methylene ether) glycol (PTMG), 2,2-bis(hydroxymethyl) propionic acid (DMPA), triethylamine (TEA), 2-hydroxy ethyl acrylate (HEA), and dibutyl tin dilaurate (DBT) as a catalyst. UV-curable polyurethane acrylate ionomer aqueous dispersion was formulated from the prepolymers, water (30 wt %), and 1-hydroxycyclohexylhenyl ketone (Irgacure 184) as a photoinitiator. The films of UV-cured polyurethane acrylate ionomer were formed by curing the dispersion using a medium-pressure mercury lamp (80 W/cm; λ max = 365 nm). Gel content decreased with increasing water content in the aqueous dispersion. Effects of DMPA content and molecular weight of PTMG and the degree of neutralization on the physical properties were investigated. It was found that the storage modulus increased with increasing DMPA content. Tensile modulus and strength decreased with increasing the molecular weight of PTMG from 650 to 2000. The glass transition temperature shifted to a higher temperature as the content of DMPA increased. As the degree of neutralization increased, the tensile strength and modulus decreased. However, the elongation at break increased. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 67:2153–2162, 1998 相似文献
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A new type of a UV-curable polyurethane acrylate resin based on hydroxyterminated polydimethylsiloxane (PDMS) soft segments with molecular weight 1800 and 2,4-toluene diisocyanate (TDI)/2-hydroxyethyl methacrylate (HEMA) hard segments were synthesized. The reactivity of 2,4-TDI with the hydroxy groups of silanol and HEMA was discussed by means of IR measurements. The characteristic absorption peaks of the —NCO groups of 2,4-TDI in the para- and ortho-position should decline with increasing the reaction time. The measurements of fundamental physical properties of this type of UV-curable materials had been widely studied in addition to the effects of using various reactive diluents and some pigments. This kind of resin with good optical, electrical insulating, and adhesive properties on various matrices, could be improved in chemical properties and reduced in viscosity while promoting the coating processability by mixing with various reactive diluents. The excellent adhesive properties on glass plates can be attributed to the similar structure between the PDMS soft segments and glass which makes the application in the coating industry possible. 相似文献
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Jie Zhu Xiaoyan Zhang Feng Gao Ming Chen Shiqiang Huang 《Journal of Polymer Research》2011,18(6):1991-1997
A novel alkoxysilane/acrylate copolymer microemulsion was prepared by copolymerization of vinylmethyldiethoxysilane and acrylic
monomers using a composite emulsifier system composing of ordinary anionic sodium dodecyl sulphate (SDS), nonionic po1yoxyethylene
octylphenol ether (OP-10), and n-butanol as co-surfactant, ammonium persulfate (APS) as initiator. The effects of polymerization processes, reaction conditions
and the polymer content on the copolymer microemulsion were investigated, respectively. The structure of the copolymer was
characterized by FT-IR spectroscopy. FT-IR spectrum analysis of the latex film indicated that copolymerization occurred. The
morphology and size of the microlatex particles had been characterized by TEM and photon correlation spectroscopy (PCS), respectively.
Results showed that seeded microemulsion polymerization with a high temperature emulsification process was superior for producing
stable copolymer microlatexes. With high alkoxysilane content (30 wt.%), high copolymer content (37.5 wt.%) and low emulsifiers
content (5 wt.%), the nanoparticles in the range from 20 nm to 60 nm were obtained. 相似文献
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