کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5356856 | 1388209 | 2011 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Acrylic coatings exhibiting improved hardness, solvent resistance and glossiness by using silica nano-composites
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کلمات کلیدی
DLSDBSDMFMAAMMAAPs - AP هاMethacrylic acid - اسید متاکریلیکTem - این استGlossiness - براق بودنButyl acrylate - بوتیل اکریلاتglass transition temperature - دمای انتقال شیشهHardness - سختیFTIR - طیف سنج مادون قرمزFourier transform infrared spectroscopy - طیف سنجی مادون قرمز تبدیل فوریه یا طیف سنجی FTIRLatex - لاتکسMethyl methacrylate - متیل متاکریلاتSEM - مدل معادلات ساختاری / میکروسکوپ الکترونی روبشیSolvent resistance - مقاومت در برابر حلالScanning electron microscopy - میکروسکوپ الکترونی روبشیTransmission electron microscopy - میکروسکوپ الکترونی عبوریNano-composite - نانو کامپوزیتDynamic Light Scattering - پراکندگی نور دینامیکی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Acrylic coatings exhibiting improved hardness, solvent resistance and glossiness by using silica nano-composites Acrylic coatings exhibiting improved hardness, solvent resistance and glossiness by using silica nano-composites](/preview/png/5356856.png)
چکیده انگلیسی
To prepare nano-composite emulsion acrylic resins with improved surface hardness and solvent resistance, nano-silica particles were treated with surfactants. The monomers of methyl methacrylate/butylacrylate were co-polymerized on the surface of dispersed silica particles. Several emulsions with different silica contents and copolymer mole fractions were prepared. Finally the emulsions were modified to water-based acrylic coatings and improved properties such as surface hardness, solvent resistance and glossiness were determined. The study of coatings was directed to find the improved resin by optimum surface properties. Size distribution and morphology of latexes were characterized by Fourier transform infrared spectroscopy, dynamic light scattering, transmission electron microscopy and scanning electron microscopy. The glass transition temperature of nano-composites was measured and discussed its relation with silica contents, monomer mole fractions and improved properties of coatings. The optimum pendulum hardness of coatings was on 0.46 methyl methacrylate mole fraction and 120Â g silica content. An increase in pendulum hardness of nano-composites with the addition of modified silica was observed. DLS and TEM studies indicate that silica particles were dispersed homogenously through the polymer matrix.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 257, Issue 6, 1 January 2011, Pages 2118-2125
Journal: Applied Surface Science - Volume 257, Issue 6, 1 January 2011, Pages 2118-2125
نویسندگان
Ahmad Dashtizadeh, Majid Abdouss, Hossein Mahdavi, Manuchehr Khorassani,