Conductive waterborne silicone acrylate emulsion/carbon nanotubes composite coatings: preparation and characterization

Author(s):  
Cen Li ◽  
Zhangyin Yan ◽  
Yufei Zhang ◽  
Lin Qi ◽  
Shengsong Ge ◽  
...  
2013 ◽  
Vol 423-426 ◽  
pp. 1046-1050
Author(s):  
Ling Min Liao ◽  
Hui Liang ◽  
Liang Chen ◽  
Zai Qin Wang ◽  
Shan Feng Wang

In this paper, a new type of nano-SiO2/silicone-acrylate emulsion composite coatings were synthesized through the modification and dispersion of nano-SiO2 mixed with waterborne resin, dispersant, etc., and successive compounding with silicone-acrylate emulsion. The effects of dispersant concentration, PH value and the addition of waterborne resin on the dispersion stability of the nano-SiO2 aqueous suspension were explored through infrared spectrum, X-ray diffraction techniques and sedimentation test, as well as the influence of thickener and defoamer agent on the performance of the composite coatings. It was found that the nano-SiO2/silicone-acrylate emulsion composite coatings had good properties of weather resistance, anti-abrasion, acid and alkaline resistance and water resistance and so on, which could effectively improve the durability of concrete. So they can be widely used in surface protection of hydraulic constructions.


2021 ◽  
Vol 11 (19) ◽  
pp. 9256
Author(s):  
Michał Chodkowski ◽  
Iryna Ya. Sulym ◽  
Konrad Terpiłowski ◽  
Dariusz Sternik

In this paper, we focus on fabrication and physicochemical properties investigations of silica–multiwalled carbon nanotubes/poly(dimethylsiloxane) composite coatings deposited on the glass supports activated by cold plasma. Air or argon was used as the carrier gas in the plasma process. Multiwalled carbon nanotubes were modified with poly(dimethylsiloxane) in order to impart their hydrophobicity. The silica–multiwalled carbon nanotubes/poly(dimethylsiloxane) nanocomposite was synthesized using the sol–gel technique with acid-assisted tetraethyl orthosilicate hydrolysis. The stability and the zeta potential of the obtained suspension were evaluated. Then, the product was dried and used as a filler in another sol–gel process, which led to the coating application via the dip-coating method. The substrates were exposed to the hexamethyldisilazane vapors in order to improve their hydrophobicity. The obtained surfaces were characterized by the wettability measurements and surface free energy determination as well as optical profilometry, scanning electron microscopy, and transmittance measurements. In addition, the thermal analyses of the carbon nanotubes as well as coatings were made. It was found that rough and hydrophobic coatings were obtained with a high transmittance in the visible range. They are characterized by the water contact angle larger than 90 degrees and the transmission at the level of 95%. The X-ray diffraction studies as well as scanning electron microscopy images confirmed the chemical and structural compositions of the coatings. They are thermally stable at the temperature up to 250 °C. Moreover, the thermal analysis showed that the obtained composite material has greater thermal resistance than the pure nanotubes.


2010 ◽  
Vol 36 (1) ◽  
pp. 307-312 ◽  
Author(s):  
M. Charlotte Schausten ◽  
Decheng Meng ◽  
Rainer Telle ◽  
Aldo R. Boccaccini

2015 ◽  
Vol 1095 ◽  
pp. 626-630 ◽  
Author(s):  
Liang Chen ◽  
Zai Qin Wang ◽  
Tao Wei ◽  
Cheng Jing Xiao

In order to develop more suitable anticorrosive coatings for hydraulic engineering metal structures, studies were carried out on the modification of water-borne inorganic zinc-rich coatings in this paper. Through effective regulation of the type and dosage of various ingredients, such like potassium silicate solution, silicone-acrylate emulsion, zinc powder and additive agent, modified water-borne inorganic zinc-rich coatings equipped with enhanced water and impact resistance were prepared. Coupled with the inherent anti-corrosion and electrochemical protection property, this modified new coating possesses a broader application prospect in hydraulic engineering metal structures.


2005 ◽  
Vol 86 (25) ◽  
pp. 251905 ◽  
Author(s):  
Yao Chen ◽  
Cuihua Gan ◽  
Tainua Zhang ◽  
Gang Yu ◽  
Pucun Bai ◽  
...  

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