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

Active Publication Date: 2016-02-10
浙江圣润纳米科技有限公司
20 Cites 56 Cited by

AI-Extracted Technical Summary

Problems solved by technology

The process of preparing airgel materials through sol-gel formation of network nanopores requires special equipment such as supercritical drying equipment, or requires a large amount of organic sol replacement such as ethanol, n-hexane, etc. The process is complicated, the equipment investment is large, and because organic Solvents are flammable, explosive and unsafe
More importantly, the application and development of airgel materials in coatings is still very difficult for the following reasons: First, the density of airgel materials is extremely low, which is greatly different from other materials, and it is very difficult to disperse and mix in coatings; Hydrophobic airgel powder is difficult to mix with other materials in a water-based environment, and the product obtai...
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Abstract

The invention relates to an aqueous nano porous corrosion-resistant heat-insulated coating material and a preparation method for the corrosion-resistant heat-insulated coating material and particularly relates to an aqueous corrosion-resistant heat-insulated coating material, which has a nano porous structure, prepared through forming an aqueous-phase uniform three-dimensional-network nano porous structure by taking thixotropic colloid as a template agent and adding a film forming agent, a reinforcing powder material, a functional powder material and admixtures. The preparation method for the corrosion-resistant heat-insulated coating material, disclosed by the invention, is simple and easy in operation and low in production cost, is environment-friendly and safe and is beneficial to mass production. The nano porous corrosion-resistant heat-insulated coating material disclosed by the invention has excellent heat insulating and corrosion resisting properties and can be applied to the heat insulating and corrosion resisting of equipment such as high-temperature furnace hearths, pipelines and valves in the fields of aerospace and military industries, metallurgical forging, petroleum refining, electric power and the like, so that the safety of use and the level of energy saving and consumption lowering are improved.

Application Domain

Chemical industryAnti-corrosive paints

Technology Topic

Aqueous corrosionCorrosion prevention +5

Examples

  • Experimental program(4)

Example Embodiment

[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.

Example Embodiment

[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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PUM

PropertyMeasurementUnit
Thermal conductivity0.035W·k/m
Thermal conductivity0.039W·k/m
Thermal conductivity0.04W·k/m
tensileMPa
Particle sizePa
strength10

Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

  • Avoid reunion and scatter problems
  • Simple preparation process
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