Properties of solvent based polyurethane adhesives containing fumed silicas |
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| Authors: | José M. Martí n-Martí nez,Trinidad G. Maciá -Agulló ,Juan C. Ferná ndez-Garcí a,A. cé sar Orgilé s-Barceló ,Ana Torró -Palau |
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| Abstract: | Five hydrophilic and two hydrophobic fumed silicas of different surface area and particle size were added to solvent based polyurethane adhesives. Silica addition produced a noticeable increase in the adhesive viscosity, imparted negative thixotropy, increased the storage modulus (G') and improved the green adhesion of chlorinated rubber/PU adhesive/chlorinated rubber joints. Those modifications were more pronounced in the adhesives which contain hydrophilic silicas. |
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