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Floating aluminum silver pulp and its coating effect

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Floating aluminum silver pulp and its coating effect


    The main raw materials for preparing floating aluminum silver pulp are atomized aluminum powder, 150# solvent oil and stearic acid (saturated fatty acids, density 0.847g/cm3). During the ball milling stage, saturated fatty acids such as stearic acid are used as lubricants, and stearic acid is adsorbed on the surface of the aluminum sheet to make the aluminum sheet hydrophobic and hydrophobic. When the aluminum sheet coated with stearic acid acting on the coating system cannot be infiltrated by the substrate, and the density is relatively small, thus reducing the downward gravity of the aluminum scales. On the other hand, with the help of the upward thrust of the molecule moving to the surface of the carrier when the solvent volatilizes, the sinking force caused by the weight of the aluminum scales floats to the surface of the carrier and oriented near the surface of the paint film to form an opaque silver film (see Figure 1). Because the aluminum sheet floats on the surface of the paint film, some aluminum sheets overlap, so there will be silver loss, and it is difficult to reapply (hardic acid lubrication, not easy to cover the light). Floating aluminum silver pulp is generally used in roof painting, maintenance, anticorrosive coatings, reflective coatings, and imitation chrome-plated paints with high protection requirements. The appearance of floating aluminum silver pulp varies according to the thickness of particle size. It can range from a rough and white appearance to a gray, highly reflective or mirror-like effect, which can produce from flat, silver and high light.(Chrome plating) and other effects. The coarse-grained floating aluminum silver pulp covers the door low and has a rough structure, but it can get the brightest. Coating. Fine-grained floating aluminum silver pulp has good covering power, producing  Bright white coating. These floating aluminum silver pulp aluminum sheets The surface is smooth, which not only reflects light (visible light, ultraviolet light and infrared light) and has a good thermal insulation effect; the dense stacking pressure of aluminum sheets can also provide a shielding effect to prevent moisture and other reaction media from entering the paint film, which plays a good protective role in coating substrates.


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