Preparation method and use method of water-based inorganic boron nitride release agent
A technology of boron nitride release agent and boron nitride, which is applied in lubricating compositions, petroleum industry, etc., can solve problems affecting the smooth demoulding of products and the pass rate of products, and achieve the effect of uniform coating
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Embodiment 1
[0036] First, dissolve 5 parts of 40% water glass in a mixture of 60 parts of ethanol and 20 parts of water, and then add dropwise an ammonium bicarbonate solution with a mass concentration of 2% during the stirring process until the solution turns milky white, then stop adding . Then 15 parts of boron nitride with an average particle size of 6 um was added to the above solution, and the stirring was continued for 5 hours. The above solution was centrifugally filtered at 1500 mesh, deionized and washed several times until the conductivity of the filtrate was less than 20 us / cm. Place it in an oven at 80° C. for 12 hours to obtain pretreated boron nitride. Then take 13 parts of pretreated boron nitride and disperse in 80 parts of water, and add 4 parts of aluminum nitrate nonahydrate at the same time, and disperse evenly in a high-speed disperser. Finally, the pH value was adjusted to 7.6-8.5 by dropping potassium hydroxide solution, and then 0.2 parts of hydrophilic fumed si...
Embodiment 2
[0042] First, dissolve 5 parts of 40% water glass in a mixture of 60 parts of ethanol and 20 parts of water, and then add dropwise an ammonium bicarbonate solution with a mass concentration of 2% during the stirring process until the solution turns milky white, then stop adding . Then 15 parts of boron nitride with an average particle size of 6 um was added to the above solution, and the stirring was continued for 5 hours. The above solution was centrifugally filtered at 1500 mesh, deionized and washed several times until the conductivity of the filtrate was less than 20 us / cm. Place it in an oven at 80° C. for 12 hours to obtain pretreated boron nitride. Then take 13 parts of pretreated boron nitride and disperse in 80 parts of water, and add 4 parts of aluminum nitrate nonahydrate at the same time, and disperse evenly in a high-speed disperser. Finally, the pH value was adjusted to 7.6-8.5 by dropping potassium hydroxide solution, and then 0.2 parts of hydrophilic fumed si...
Embodiment 3
[0045] First, dissolve 5 parts of 40% water glass in a mixture of 60 parts of ethanol and 20 parts of water, and then add dropwise an ammonium bicarbonate solution with a mass concentration of 2% during the stirring process until the solution turns milky white, then stop adding . Then 15 parts of boron nitride with an average particle size of 3 um was added to the above solution, and the stirring was continued for 5 hours. The above solution was centrifugally filtered at 1500 mesh, deionized and washed several times until the conductivity of the filtrate was less than 20 us / cm. Place it in an oven at 80° C. for 12 hours to obtain pretreated boron nitride. Then take 13 parts of pretreated boron nitride and disperse in 80 parts of water, and add 4 parts of aluminum nitrate nonahydrate at the same time, and disperse evenly in a high-speed disperser. Finally, the pH value was adjusted to 7.6-8.5 by dropping potassium hydroxide solution, and then 0.2 parts of hydrophilic fumed si...
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Abstract
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