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首页> 外文期刊>Journal of coatings technology and research >Preparation and characterization of water-based polyurethane-acrylic hybrid nanocomposite emulsion based on a new silane-containing acrylic macromonomer
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Preparation and characterization of water-based polyurethane-acrylic hybrid nanocomposite emulsion based on a new silane-containing acrylic macromonomer

机译：基于新型含硅烷丙烯酸大分子单体的水性聚氨酯-丙烯酸杂化纳米复合乳液的制备与表征

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A new silane-containing acrylic macromonomer, maleimidedoethoxybutoxydimethylsiloxy butyl acrylate (MEBDMSBA), based on maleic anhydride (MA), ethanolamine (EA), 1,4-butanediol (BDO), dichlorodimethylsilane (DCDMS), and acrylic acid (AA) has been synthesized for formulation of water-borne polyurethane (WPU). Also a series of new silane-containing WPU, methyl methacrylate (MMA), MEBDMSBA, and montmorillonite (MMT) with organically modified montmorillonite (OMMT) content (1.25 wt%) hybrid nanocomposites have been successfully prepared by the emulsion polymerization in the presence of a WPU dispersion, using ammonium peroxodisulfate (APS) as an initiator. The WPU dispersion has been synthesized by a polyaddition reaction of isophorone diisocyanate (IPDI) on polypropylene glycol (PPG-1000) and dimethylol propionic acid (DMPA) as chain extender. The monomer was characterized by Fourier transformer infrared spectro-scopy (FTIR), elemental analysis, proton (~1H NMR), and carbon (~(13)C NMR) nuclear magnetic resonance spectroscopes, respectively. The nanocomposite emulsions were also characterized using Fourier transform infrared spectroscopy (FTIR) and laser light scattering. Thermal properties of the copolymers were studied using thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The OMMT was characterized by FTIR and X-ray diffraction (XRD). The morphology of copolymers was investigated by scanning electron microscopy (SEM) and transition electron microscopy (TEM), and then the effects of silane concentrations on the water absorption ratio were examined. Results showed that OMMT could improve the properties of emulsion; in other words, the properties of nanocomposite emulsion were better when compared with those of the silane-acrylate emulsion.
机译：基于马来酸酐（MA），乙醇胺（EA），1,4-丁二醇（BDO），二氯二甲基硅烷（DCDMS）和丙烯酸（AA）的新型含硅烷丙烯酸大分子单体马来酰亚胺二乙氧基丁氧基二甲基甲硅烷氧基丙烯酸丁酯（MEBDMSBA）合成用于配制水性聚氨酯（WPU）。另外，通过在有机溶剂存在下进行乳液聚合，成功制备了一系列新型的含硅烷的WPU，甲基丙烯酸甲酯（MMA），MEBDMSBA和蒙脱石（MMT），有机改性的蒙脱石（OMMT）含量（1.25 wt％）杂化纳米复合材料。 WPU分散液，使用过二硫酸铵（APS）作为引发剂。 WPU分散体是通过异佛尔酮二异氰酸酯（IPDI）与聚丙二醇（PPG-1000）和二羟甲基丙酸（DMPA）作为扩链剂的加聚反应合成的。分别通过傅立叶变压器红外光谱（FTIR），元素分析，质子（〜1H NMR）和碳（〜（13）C NMR）核磁共振波谱对单体进行表征。纳米复合乳液还使用傅立叶变换红外光谱（FTIR）和激光散射进行了表征。使用热重分析（TGA）和差示扫描量热法（DSC）研究了共聚物的热性能。 OMMT通过FTIR和X射线衍射（XRD）进行表征。通过扫描电子显微镜（SEM）和过渡电子显微镜（TEM）研究共聚物的形貌，然后研究硅烷浓度对吸水率的影响。结果表明，OMMT可以改善乳液的性能。换句话说，与硅烷丙烯酸酯乳液相比，纳米复合乳液的性能更好。

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