Slow-release humic acid microsphere water-loss reducer and method for making same
A technology of humic acid and water-retaining agent, applied in the direction of organic fertilizer, fertilizer mixture, waste fuel, etc., can solve the problem of fast release rate and achieve good soil improvement effect
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[0015] Example 1:
[0016] Attapulgite microspheres with a particle size of 1 mm were selected, placed in a saturated solution of humic acid, and absorbed for 4 hours before use. Add 7.20g acrylic acid into the reactor, add 20ml distilled water to dissolve, add 5.0g attapulgite microspheres with humic acid, 122.3mg N,N'methylenebisacrylamide and 18.4mg potassium persulfate, The temperature was raised to 70°C for 3h. After the reaction, the product was washed with methanol / water solution and then dried at 70°C to a constant weight. The product in this example absorbs 480 grams of distilled water per gram, and its color is black.
Example Embodiment
[0017] Example 2
[0018] Attapulgite microspheres with a particle size of 2 mm were selected, placed in a saturated solution of humic acid, and absorbed for 6 hours before use. Add 7.20g acrylic acid to the reactor, add 20ml distilled water to dissolve, add 4.2g attapulgite microspheres with humic acid, 122.3mg N,N'methylenebisacrylamide and 18.4mg potassium persulfate, The temperature was raised to 70°C for 3h. After the reaction, the product was washed with methanol / water solution and then dried at 70°C to a constant weight. The product in this example absorbs 425 grams of distilled water per gram, and its color is black.
Example Embodiment
[0019] Example 3
[0020] Attapulgite microspheres with a particle size of 4 mm were selected, placed in a saturated solution of humic acid, and absorbed for 8 hours before use. Add 7.20g of acrylic acid into the reactor, add 20ml of distilled water to dissolve, add 5.2g of attapulgite microspheres with humic acid, 122.3mgN,N'methylene bisacrylamide and 18.4mg potassium persulfate, increase the temperature React at 70°C for 3h. After the reaction, the product was washed with methanol / water solution and then dried at 70°C to a constant weight. The product in this example absorbs 328 grams of distilled water per gram, and its color is black.
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