A kind of preparation method of filling modified polyurethane film
A polyurethane membrane and modification technology, applied in separation methods, chemical instruments and methods, membrane technology, etc., can solve problems such as reducing permeation flux
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Embodiment 1
[0015] 1) Preparation of porous silicon-manganese composite particles
[0016] (1) Weigh 2.00g solid KMnO 4 powder and 0.36 g solid MnSO 4 ·H 2 O, respectively dissolved in 60mL deionized water, mechanically stirred until completely dissolved, to obtain solution A; solution A was transferred to a hydrothermal kettle, and the hydrothermal kettle was kept at 160°C for 24 hours, and then filtered, washed, and dried. 1.5g black δ-MnO was obtained 2 solid;
[0017] (2) The resulting δ-MnO 2 Disperse in 60mL of deionized water containing 0.5% (mass content) surfactant CTAB, and ultrasonicate for 20 minutes to obtain suspension B; weigh 0.81g of solid NaSiO 3 9H 2 O, dissolved in 60mL of water to obtain solution C; then put suspension B in a water bath at 80°C, add dropwise solution C to suspension B under stirring, and obtain cloudy solution D after the addition; Transfer to a 200mL hydrothermal kettle with a Teflon liner, put the hydrothermal kettle into a blast drying oven,...
Embodiment 2
[0022] 1) Preparation of porous silicon-manganese composite particles
[0023] Weigh 4.00g solid KMnO 4 powder and 0.73 g solid MnSO 4 ·H 2 O, was added to 80mL of 0.5% CTAB aqueous solution with a mass concentration of 0.5%, and mechanically stirred until completely dissolved to obtain solution A; weigh 6.2g of solid NaSiO 3 9H 2 O, dissolved in 80mL water to obtain solution B; at room temperature, add solution B dropwise to solution A, and keep stirring, to obtain cloudy solution C; transfer C to a volume of 200mL In a hydrothermal kettle lined with vinyl fluoride, put the hydrothermal kettle into a blast drying oven, keep it warm at 160°C for 24 hours; then cool down naturally, filter, wash, and finally dry at 110°C overnight to obtain SiO 2 The porous silicon-manganese composite particles with a content of 30% are denoted as p-Mn30Si.
[0024] 2) Preparation of porous inorganic composite particles filled polyurethane membrane
[0025] Weigh 6.0g of polyurethane parti...
Embodiment 3
[0028] 1) Preparation of porous silicon-manganese composite particles
[0029] (1) Weigh 4.00g solid KMnO 4 powder and 0.73 g solid MnSO 4 ·H 2 O, respectively dissolved in 80mL deionized water, mechanically stirred until completely dissolved, to obtain solution A; solution A was transferred to a hydrothermal kettle, and the hydrothermal kettle was kept at 160°C for 24 hours, and then filtered, washed, and dried. 1.5g black δ-MnO was obtained 2 solid;
[0030] (2) The resulting δ-MnO 2 Disperse in 80mL deionized water containing 0.5% (mass content) surfactant CTAB, and ultrasonicate for 20 minutes to obtain suspension B; weigh 14.46g of solid NaSiO 3 9H 2 O, dissolved in 80mL water to obtain solution C; then place suspension B in a water bath at 80°C, add solution C to suspension B dropwise under stirring, and obtain cloudy solution D after the addition is complete; D Transfer to a 200mL hydrothermal kettle with a polytetrafluoroethylene liner, put the hydrothermal kett...
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