Nano porous corrosion-resistant heat-insulated coating material taking thixotropic colloid as template agent and preparation method for corrosion-resistant heat-insulated coating material
A thermal insulation coating and nanoporous technology, applied in anti-corrosion coatings, coatings, climate sustainability, etc., can solve the problems of large density difference, low density and unsafe aerogel materials, and achieve the effect of high compatibility
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[0064] Example 1.
[0065] Dissolve 40 g of 40% aluminum sol in 50 kg of water, prepare diluted aluminum sol, and let it stand for 2 days to obtain translucent thixotropic alumina colloid. Take 500g of alumina colloid, 200g of sodium silicate, 50g of vitrified beads, 50g of silica powder, 50g of titanium oxide, 10g of mica, 20g of zinc oxide, and 0.5g of defoamer, and mix and stir to prepare nanoporous anticorrosive and thermal insulation coating. The temperature is 1000℃, and the thermal conductivity at room temperature is 0.035w / m·k.
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[0066] Example 2.
[0067] Dissolve 50 g of 30% silica sol in 300 g of water to prepare diluted silica sol, and take 40 g of 40% aluminum sol to dissolve in 500 g of water to prepare diluted aluminum sol. The diluted aluminum sol is placed in a container, and the diluted silica sol is slowly added under stirring at 600 r / min to obtain a translucent thixotropic silica-alumina colloid. Take 500g of silica-alumina colloid, 300g of aluminum dihydrogen phosphate, 100g of aluminum silicate hollow beads, 50g of alumina powder, 50g of zirconium silicate, 15g of mica, 30g of zinc phosphate, and 0.3g of shrinkage reducing agent. Porous anti-corrosion and heat-insulating paint, use temperature 1200℃, thermal conductivity at room temperature 0.039w / m·k.
Example Embodiment
[0068] Example 3.
[0069] Take 10g of magnesium aluminum silicate and add 500g of water, soak for 24 hours, and then shear and disperse for 3 hours at a speed of 1800r / mim to prepare a viscous magnesium aluminum silicate thixotropic colloid. Take 500g of magnesium-aluminum silicate colloid, 300g of water-based acrylic resin, 100g of floating beads, 20g of silica fume, 40g of titanium oxide, 20g of aluminum powder, and 0.1g of dispersant, and mix and stir to prepare nanoporous anticorrosive and heat-insulating paint. The use temperature is 600℃. Thermal conductivity at room temperature is 0.040w / m·k.
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