Preparation method of hydrated calcium silicate nanosheet, nano composite paper and preparation method of nano composite paper
A hydrated calcium silicate and nano-composite technology, which is applied in the direction of silicate, nanotechnology, nanotechnology, etc., can solve problems such as hindering applications, and achieve the effect of rapid water filtration and high-efficiency adsorption performance
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[0038] The preparation method of hydrated calcium silicate nanosheet, specifically: Na 2 SiO 3 9H 2 O was dissolved in deionized water to obtain solution A; CaCl 2 Dissolve in deionized water to obtain solution B; under magnetic stirring at room temperature, inject solution B into solution A at a constant rate; when the solution is completely added, obtain a suspension, stir the suspension, filter, wash with deionized water and ethanol, After drying, hydrated calcium silicate nanosheets are obtained.
[0039] Preferably, the solution A consists of 800-900 mg of the Na 2 SiO 3 9H 2 O was obtained by dissolving 40-60 ml of deionized water, and the solution B consisted of 680-720 mg of the CaCl 2 Dissolved in 4-6 ml of deionized water to obtain. It should be noted that the proportional increase or decrease according to the embodiment of the present invention also belongs to the protection scope of this patent, for example, Na 2 SiO 3 9H 2 The mass of O is increased by 1...
Embodiment 1
[0059] Take 852 mg of Na 2 SiO 3 9H 2 O was dissolved in 50 mL of deionized water to obtain solution A, 708 mg of CaCl 2 Dissolve in 5 mL of deionized water to obtain solution B. Under magnetic stirring at room temperature, solution B was dissolved in 2.5 mLh -1 Slowly inject solution A at a constant rate. When the solution had been added completely, the suspension was stirred for 4 hours. The product was filtered, washed three times consecutively with deionized water and ethanol, and dried in an oven at 60 °C overnight to obtain CSH nanosheets.
[0060] 85 wt% CSH nanosheets and 15 wt% CNFs were dispersed in 50 ml of deionized water under magnetic stirring. Pour the suspension onto a filter membrane and vacuum filter. Washed three times with ethanol and dried at 75°C for 30min to obtain CSH / CNF nanocomposite paper.
Embodiment 2
[0062] Take 852 mg of Na 2 SiO 3 9H 2 O was dissolved in 50 mL of deionized water to obtain solution A, 708 mg of CaCl 2 Dissolve in 5 mL of deionized water to obtain solution B. Under magnetic stirring at room temperature, solution B was dissolved in 2.5 mLh -1 Slowly inject solution A at a constant rate. When the solution had been added completely, the suspension was stirred for 4 hours. The product was filtered, washed successively three times with deionized water and ethanol, and dried overnight in an oven at 60 °C.
[0063] 82.5 wt% CSH nanosheets and 17.5 wt% CNFs were dispersed in 50 ml of deionized water under magnetic stirring. Pour the suspension onto a filter membrane and vacuum filter. Washed three times with ethanol and dried at 75°C for 30min to obtain CSH / CNF nanocomposite paper.
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