Preparation method of high-performance calcium sulfate whisker based on inorganic-organic hybrid modification
A calcium sulfate whisker, organic hybrid technology, applied in chemical instruments and methods, crystal growth, single crystal growth and other directions, can solve problems such as lack of research
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Embodiment 1
[0024] Grind phosphogypsum and mix with water to control the ratio of material to liquid to 1:4, stir and wash for 10 minutes, then let it settle for precipitation, remove the upper impurity solution, continue to add water to the precipitation for washing, and repeat this for 3-5 times to obtain purified phosphorus Gypsum: Add 100g of purified phosphogypsum to 500g of hot sodium chloride solution at a temperature of 95°C and a concentration of 15wt%, add dropwise a 1mol / L hydrochloric acid solution to adjust the pH of the solution to 2.2, react at a constant temperature for 2 hours, and filter while hot after the reaction , and washing the filtered solid to neutrality, and drying in vacuum to obtain calcium sulfate whiskers;
[0025] Add 2g of zein and 0.65g of gelatin to 10ml of 75wt% acetic acid solution and stir until the solid dissolves, then add 4g of calcium sulfate whiskers, stir at 2000rpm for 30min, filter, and dry the solid to obtain zein alcohol Calcium sulfate whis...
Embodiment 2
[0028] Grind phosphogypsum and mix it with water to control the ratio of material to liquid to 1:4, stir and wash for 20 minutes, then let it settle for precipitation, remove the upper impurity solution, continue to add water to the precipitation for washing, and repeat this for 3-5 times to obtain purified phosphorus Gypsum: Add 200g of purified phosphogypsum to 500g of hot sodium chloride solution at a temperature of 95°C and a concentration of 20wt%, add dropwise 1mol / L hydrochloric acid solution to adjust the pH of the solution to 2.2, react at a constant temperature for 4 hours, and filter while hot after the reaction , and washing the filtered solid to neutrality, and drying in vacuum to obtain calcium sulfate whiskers;
[0029] Add 3g of zein and 0.85g of gelatin to 15ml of 80wt% acetic acid solution and stir until the solid dissolves, then add 4-5g of calcium sulfate whiskers, stir at 5000rpm for 60min, filter, and dry the solid to obtain Calcium sulfate whiskers modif...
Embodiment 3
[0032]Grind phosphogypsum and mix it with water to control the ratio of material to liquid to 1:4, stir and wash for 20 minutes, then let it settle for precipitation, remove the upper impurity solution, continue to add water to the precipitation for washing, and repeat this for 3-5 times to obtain purified phosphorus Gypsum: Add 180g of purified phosphogypsum to 500g of hot sodium chloride solution at a temperature of 95°C and a concentration of 15wt%, add dropwise 1mol / L hydrochloric acid solution to adjust the pH of the solution to 2.2, react at a constant temperature for 3 hours, and filter while hot after the reaction , and washing the filtered solid to neutrality, and drying in vacuum to obtain calcium sulfate whiskers;
[0033] Add 2.5g of zein and 0.7g of gelatin to 15ml of 75wt% acetic acid solution and stir until the solid dissolves, then add 4.5g of calcium sulfate whiskers, stir at 3000rpm for 3h, filter, and dry the solid to obtain Calcium sulfate whiskers modified...
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