Inorganic zinc-rich primer and preparation method thereof
An inorganic zinc-rich primer technology, applied in coatings, alkali metal silicate coatings, anti-corrosion coatings, etc., can solve the problems of good system compatibility and long service life, and achieve simple preparation process, easy operation, Good dispersion and compatibility effect
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Embodiment 1
[0049] (1) Preparation of high modulus potassium silicate solution
[0050] Weigh 100kg of low-modulus potassium silicate solution into the reactor, then add 8.69kg of silica sol solution, and raise the temperature of the system to 40°C while stirring; hours, then cool the system down to 35°C and keep it for 0.5 hours; add 18.64kg of water and 1kg of quaternary ammonium salt stabilizer CS1 into the reactor, continue to maintain the vortex state, and stir for 0.5 hours to obtain modified high modulus potassium silicate solution. The mass fraction of the high modulus potassium silicate solution is 30%, and the modulus is 3.9.
[0051] (2) Preparation of inorganic zinc-rich primer
[0052] Weigh 15kg of the high modulus potassium silicate solution prepared in (1), add it into a reactor with a stirring device, add 0.1kg of stabilizer 827 under stirring, and stir for 1 hour; then add The cellulose ether CMCLV of 6kg and 0.1kg defoamer XF-801, continue to stir 0.5 hour, obtain th...
Embodiment 2
[0054] (1) Preparation of high modulus potassium silicate solution
[0055] Weigh 100kg of low modulus potassium silicate solution into the reactor, then add 58.11kg of silica sol solution, and raise the temperature of the system to 80°C while stirring; the mixture is always in the state of vortex stirring, and keep at 80°C for 1 hour , then lower the temperature of the system to 55°C and keep it for 1 hour; add 95.74kg of water and 15kg of quaternary ammonium salt stabilizer CS1 into the reactor, continue to maintain the vortex state, and stir for 1 hour to obtain a modified high modulus potassium silicate solution . The mass fraction of the modified high modulus potassium silicate solution is 20%, and the modulus is 6.0.
[0056] (2) Preparation of inorganic zinc-rich primer
[0057] Weigh 20kg of the high modulus potassium silicate solution prepared in (1), add it into a reactor with a stirring device, add 0.2kg of tetrabutylammonium hydroxide under stirring, and stir for...
Embodiment 3
[0059] (1) Preparation of high modulus potassium silicate solution
[0060] With the method in embodiment 2.
[0061] (2) Preparation of Stabilizer A
[0062] Take by weighing 100g dispersion stabilizer SPS, add 1g potassium hydroxide then, make quaternary ammonium base after stirring for 30 minutes for subsequent use;
[0063] Weigh 200g of methyltrimethoxysilane and add it to 9700g of water, hydrolyze at 30°C for 2 hours, add 100g of the quaternary ammonium base prepared above, and continue the reaction for 1 hour to obtain stabilizer A.
[0064] (3) Preparation of inorganic zinc-rich primer
[0065] Take by weighing the high modulus potassium silicate solution prepared in 20kg (1), join in the reactor with stirring device, add the stabilizer A prepared in 0.2kg (2) under stirring state, stir 2 hours; Then Add 8kg of cellulose ether HEC-33, 0.2kg of dispersant WY001 and 0.3kg of defoamer XF-801 to the reaction kettle, and continue to stir for 1 hour to obtain the base mat...
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