A kind of preparation method of aqueous thickener
A technology of water-based thickener and aqueous solution, applied in the direction of coating, etc., can solve the problems of poor anti-sedimentation effect, easy delamination, water separation, low overall viscosity, etc., and achieve particle size reduction, good dispersion stability, Prevent the effect of mutual attraction and reunion
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Embodiment 1
[0025] A kind of preparation method of water-based thickener of the present embodiment, comprises the steps:
[0026] 1) Mix 31.25 g of sodium hydroxide, 56.75 g of sodium bicarbonate, and 452 g of deionized water to prepare a lye with a concentration of sodium hydroxide of 1.73 mol / L and a concentration of sodium bicarbonate of 1.49 mol / L.
[0027] 2) 6.25 g of aluminum nitrate nonahydrate, 50.75 g of magnesium chloride hexahydrate, and 138 g of deionized water were prepared into an aqueous solution containing magnesium and aluminum with an aluminum ion concentration of 0.12 mol / L and a magnesium ion concentration of 1.82 mol / L.
[0028] 3) According to the mass ratio of polyvinylpyrrolidone, sodium hydroxide and deionized water as 2:3:100, mix 0.81g of polyvinylpyrrolidone with a molecular weight of 630000, 1.21g of sodium hydroxide and 40g of deionized water to prepare polyvinylpyrrolidone containing polyvinylpyrrolidone A solution of vinylpyrrolidone.
[0029] 4) Accordin...
Embodiment 2
[0033] A kind of preparation method of water-based thickener of the present embodiment, comprises the steps:
[0034] 1) Mix 31.19 g of sodium hydroxide, 54.76 g of sodium bicarbonate, and 430 g of deionized water to prepare a lye with a concentration of sodium hydroxide of 1.81 mol / L and a concentration of sodium bicarbonate of 1.51 mol / L.
[0035] 2) 3.03 g of aluminum chloride hexahydrate, 48.33 g of magnesium chloride hexahydrate, and 143 g of deionized water were prepared into an aqueous solution containing magnesium and aluminum with an aluminum ion concentration of 0.088 mol / L and a magnesium ion concentration of 1.67 mol / L.
[0036] 3) According to the mass ratio of polyvinylpyrrolidone, sodium hydroxide and deionized water of 4:4:100, mix 1.39g of polyvinylpyrrolidone with a molecular weight of 580000, 1.39g of sodium hydroxide and 35g of deionized water to prepare polyvinylpyrrolidone containing polyvinylpyrrolidone A solution of vinylpyrrolidone.
[0037] 4) Accord...
Embodiment 3
[0041] A kind of preparation method of water-based thickener of the present embodiment, comprises the steps:
[0042] 1) Mix 45 g of sodium hydroxide, 79 g of sodium bicarbonate, and 603 g of deionized water to prepare a lye with a concentration of sodium hydroxide of 1.87 mol / L and a concentration of sodium bicarbonate of 1.56 mol / L.
[0043] 2) 5.95 g of aluminum nitrate nonahydrate, 85.33 g of magnesium nitrate hexahydrate, and 217 g of deionized water were prepared into an aqueous solution containing magnesium and aluminum with an aluminum ion concentration of 0.073 mol / L and a magnesium ion concentration of 1.54 mol / L.
[0044] 3) According to the mass ratio of polyvinylpyrrolidone, sodium hydroxide and deionized water as 6:3:100, mix 2.09g of polyvinylpyrrolidone with a molecular weight of 600000, 1.04g of sodium hydroxide and 35g of deionized water to prepare polyvinylpyrrolidone containing A solution of vinylpyrrolidone.
[0045] 4) According to step (3), the mass rat...
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