Influence of Nanosilica/Polyurethane Composite Coating on IR Effectiveness and Visible Light Transmission Properties of Polyethylene

Ching Yern Chee; Iskandar Idris Yaacob

doi:10.4028/www.scientific.net/AMR.97-101.1669

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 97-101Influence of Nanosilica/Polyurethane Composite...

Influence of Nanosilica/Polyurethane Composite Coating on IR Effectiveness and Visible Light Transmission Properties of Polyethylene

Abstract:

Polyethylene (PE) film was coated with nanosilica-polyurethane layer using rod Mayer process. The nanosilica-polyurethane system was prepared by dispersing nanosilica (SiO2) powder into solvent borne polyurethane (PU) binder under vigorous stirring. Various compositions of nanosilica-polyurethane slurry were prepared. A battery of characterization procedures were used to study the properties of the nanocomposite coating. ATR FTIR confirmed the presence of functional groups of silica and polyurethane. The uniformity of silica dispersion was probed using scanning electron microscopy (SEM). With the introduction of nanosilica to polyurethane binder, the visible light transmittance and ultra-violet (UV) radiation of nanosilica-polyurethane system reduced with increasing nanosilica content and coating layer thickness. The PE coated with nanocomposite containing 14wt% nanosilica and with 8 µm coating thickness showed >88% transmittance in the visible light region. Infrared (IR) effectiveness (between 7 μm to 13 μm wavelengths) measurements by FTIR also showed that nanosilica/polyurethane system coating on PE film surface greatly improved the infrared opacity properties of PE film.

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Periodical:

Advanced Materials Research (Volumes 97-101)

Pages:

1669-1672

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.97-101.1669

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Online since:

March 2010

Authors:

Ching Yern Chee, Iskandar Idris Yaacob

Keywords:

Coating, Infrared Effectiveness, Nanocomposite, Nanosilica, Polyurethane (PU)

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DOI: 10.4028/www.scientific.net/amr.181-182.697

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