A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Biobased Waterborne Floor Coatings with Enhanced Flow and Appearance
Castor oil-based polyols are used in the floor coating industry both in very high solids formulations and in waterborne formulations. For thick coatings (1/8 in. or greater) and for systems using cementicious materials, the waterborne option is the best since this provides the proper application rheology and the necessary water for hydration of the cement portion. Formulation for Three-Component Polymeric Concrete: Castor oil emulsion 18.3 %, Aromatic polyisocyanate 23.4 % Blend components thoroughly with drill/paddle mixer for 2 min. Add pre-blended mortar portion while mixing: White Portland cement 19.0 %, Hydrated lime 5.9 %, 30 - 60 mesh (250 - 600 µm) silica sand 33.1 %, Mineral oil 0.3 % (parts by Weight). The ASTM D7234-Pull-0ff Adhesion Strength to concrete was measued to be 1543 psi. Castor oil-based polyols offer a natural and sustainable resource for the development of emulsions which, when used in the proper ratios with polyisocyanates and cementitious aggregates, provide quality high-build floor coatings. As illustrated, refinements are possible with this technology to further enhance application properties, increase working time, and improve the aesthetic appearance.
Biobased Waterborne Floor Coatings with Enhanced Flow and Appearance
Castor oil-based polyols are used in the floor coating industry both in very high solids formulations and in waterborne formulations. For thick coatings (1/8 in. or greater) and for systems using cementicious materials, the waterborne option is the best since this provides the proper application rheology and the necessary water for hydration of the cement portion. Formulation for Three-Component Polymeric Concrete: Castor oil emulsion 18.3 %, Aromatic polyisocyanate 23.4 % Blend components thoroughly with drill/paddle mixer for 2 min. Add pre-blended mortar portion while mixing: White Portland cement 19.0 %, Hydrated lime 5.9 %, 30 - 60 mesh (250 - 600 µm) silica sand 33.1 %, Mineral oil 0.3 % (parts by Weight). The ASTM D7234-Pull-0ff Adhesion Strength to concrete was measued to be 1543 psi. Castor oil-based polyols offer a natural and sustainable resource for the development of emulsions which, when used in the proper ratios with polyisocyanates and cementitious aggregates, provide quality high-build floor coatings. As illustrated, refinements are possible with this technology to further enhance application properties, increase working time, and improve the aesthetic appearance.
Biobased Waterborne Floor Coatings with Enhanced Flow and Appearance
Wasserbasierte Bodenbeschichtungen aus biologischen Rohstoffen mit verbessertem Fluss und Erscheinungsbild
Hellems, Stephen (author) / Willhite, John (author) / Subramanian, Ramesh (author)
Coatings Tech ; 12 ; 30-33
2015
4 Seiten, Bilder, Tabellen, 6 Quellen
Article (Journal)
English