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Manufacture Process: The organic-inorganic double layers coated water-based aluminium pastes for aqueous coating systems, which represents the conception of environmental health from raw material to the final products have been developed by ourselves. The manufacture process is composed of the following steps: 1. Prepare the aluminum powder for aqueous coating systems by milling using “green” solvent; 2. Silica nano-film coating on flaky aluminum powder; 3. High temperature aging for silica nano-film; 4. Functional resin coating on silica filmGradeNon-volatile content (%) ±2%D50 (um)Sieve residue (%)Aluminum content (%) ±2%Solvent>45um>75umW051655≤0.5/57Butyl glycolW061656≤0.5/57Butyl glycolW081658≤0.5/57Butyl glycolW1016510≤0.5/57Butyl glycolW1516515≤0.5/57Butyl glycolW1817518≤0.5/68Butyl glycolW3017530≤1.0/68Butyl glycolW3817538≤1.0≤0.568Butyl glycolW5217552/≤0.569Butyl glycol1. organic-inorganic double layers, obtain excellent gassing resistant; 2. transparent nano-films, ensure the gloss of original aluminum powder; 3. high temperature aging, promote the stability of aluminum pigments;4. surface modification by functional resin, guarantee the good compatibility with various kinds of resins and excellent brightness and coverage They are suitable for various fields of application such as aqueous printing ink, plastic paint, building paint and so on. Performance of aluminum pigments in aqueous coating systems We have tested the performance of aluminum pigments in typical types of aqueous systems: polyacrylic silica resin for architectural coatings, polyacrylic emulsion for printing ink, and epoxy resin for plastic coating. The application performances mainly include the storage stability and the surface effect. The formulation of the aqueous system: 20g W101, 20g BG, 160g resin.SystemPolyacrylic silica resinPolyacrylic emulsionEpoxy resinOne dayThree monthsOne dayThree monthsOne dayThree monthsvolume of hydrogen (ml)020303gloss degree (%)817978808079 It shows that the three typical aqueous coating systems containing W101 aluminum pigments all have good storage stability and little change of surface effect after storing for three months.