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Abstract

The acrylic resin leather coating agent modified by nano-SiO₂ is investigated in this article. Nano-SiO₂ is prepared by the sol–gel reaction from tetraethoxysilane (TEOS) catalyzed with acid and mixed with an acrylic resin. The properties of nano-SiO₂ particles at different aging times are studied. The physical–mechanical properties of the films from modified acrylic resin by nano-SiO₂ sol particles are obtained. Besides, the hygiene property of the leather finished using nano-SiO₂ is measured. Fourier transform infrared spectroscopy (FTIR) and transmission electron microscopy (TEM) are employed to characterize the presence of nano-SiO₂ particles in the SiO₂ sol. The acrylic resin and modified acrylic resin are analyzed with differential scanning calorimetry (DSC). The results show that the physical–mechanical properties and hygiene property of the film from SiO₂–AR (acrylic resin) coating agent composite increase notably: air and water vapor permeability are improved by 15.4 and 11.5% respectively.

Keywords

sol-gel nano-SiO2 leather finishing agent

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The Acrylic Resin Leather Coating Agent Modified by Nano-SiO 2

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