High water absorbing and retaining composite containing illite clay mineral and method for preparing the same
A kind of clay mineral, composite material technology
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Embodiment 1
[0031] In 300 grams of acrylic acid solution with a concentration of 15% and a neutralization degree of 100%, add 0.0031 grams of N, N'-methylenebisacrylamide and 0.0212 grams of potassium persulfate under stirring, dissolve, and then grind the superfine 10 grams of illite clay mineral (content greater than 50%) was added thereto, and ultrasonically dispersed for 10 minutes. After the mixed material was heated in the reactor at 50°C for 7 hours, the temperature was raised to 30°C for 1 hour, and the resulting gel was dried at 150°C for 1 hour, and then crushed mechanically to obtain the final product.
Embodiment 2
[0033] In 300 grams of acrylic acid solution with a concentration of 30% and a neutralization degree of 80%, add 0.022 grams of N, N'-methylenebisacrylamide and 0.425 grams of potassium persulfate under stirring, dissolve, and then grind the ultrafine 50 grams of illite clay mineral (content greater than 90%) was added therein, and ultrasonically dispersed for 20 minutes. The mixed material was heated at 70°C in the reactor for 3 hours, then raised to 10°C for 2 hours, and the resulting gel was dried at 50°C under vacuum for 5 hours, and then crushed mechanically to obtain the final product.
Embodiment 3
[0035] In 200 grams of acrylic acid solution with a concentration of 45% and a neutralization degree of 20%, add 0.005 grams of N, N'-methylenebisacrylamide and 0.050 grams of potassium persulfate under stirring, dissolve, and then grind the ultrafine 30 grams of illite clay mineral (content greater than 60%) is added therein, and the colloid mill is dispersed. After the mixed material was heated at 60°C for 4 hours in the reactor, the temperature was raised to 20°C for 3 hours, and the resulting gel was dried at 110°C for 5 hours, and then crushed mechanically to obtain the final product.
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