Kapok fiber composite super absorbent resin as well as preparation method thereof
A technology of super absorbent resin and kapok fiber, which is applied in the field of super absorbent resin to achieve the effects of fast water absorption rate, high reaction efficiency and simple synthesis process
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Embodiment 1
[0024] Crush the kapok fiber to about 1cm first, add it to an aqueous solution containing 1% sodium chlorite, and heat it up to 70°C for 1 hour. After the reaction, the fibers were washed with distilled water until neutral, and the fibers were dried at 70°C to constant weight for later use. Add 10 parts of activated kapok fiber into the reactor, add a certain amount of distilled water to stir and wet it, and pass N 2 , add 0.1 part of ammonium persulfate solution, heat up to 60 o C for 15 min, then add 100 parts of acrylic acid (neutralized to 70% with NaOH in advance), 15 parts of acrylamide and 0.2 parts N,N '-methylenebisacrylamide, heated to 70 o C reacted for 3 h. After the reaction, the product was at 70 o C, dried to constant weight, crushed, and passed through a 40-80 mesh sieve. The distilled water absorption rate of the product in this embodiment is 580g / g, and the absorption rate of physiological saline is 70g / g.
Embodiment 2
[0026] Crush the kapok fiber to about 1cm first, add it to an aqueous solution containing 1% sodium chlorite, and heat it up to 70°C for 1 hour. After the reaction, the fibers were washed with distilled water until neutral, and the fibers were dried at 70°C to constant weight for later use. Add 10 parts of activated kapok fiber into the reactor, add a certain amount of distilled water to stir and wet it, and pass N 2 , add 0.1 part of potassium persulfate, heat up to 60 o C was initiated for 15 min, and then 100 parts of acrylic acid (neutralized to 80% with NaOH in advance), 20 parts of acrylamide and 0.1 parts of N,N '-methylenebisacrylamide, heated to 80 o C reacted for 2h. After the reaction, the product was at 70 o C, dried to constant weight, crushed, and passed through a 40-80 mesh sieve. The distilled water absorption rate of the product in this embodiment is 675g / g, and the absorption rate of physiological saline is 78g / g.
Embodiment 3
[0028] Crush the kapok fiber to about 1cm first, add it to an aqueous solution containing 1% sodium chlorite, and heat it up to 70°C for 1 hour. After the reaction, the fibers were washed with distilled water until neutral, and the fibers were dried at 70°C to constant weight for later use. Put 20 parts of activated kapok fiber into the reactor, add a certain amount of distilled water to stir and wet it, and pass N 2 , add 0.2 parts of V50, heat up to 60 o C for 15 min, then add 100 parts of acrylic acid (neutralized to 90% with NaOH in advance), 20 parts of acrylamide and 0.1 parts N,N '-methylenebisacrylamide, heated to 80 o C reacted for 3 h. After the reaction, the product was at 70 o C, dried to constant weight, crushed, and passed through a 40-80 mesh sieve. The distilled water absorption rate of the product in this embodiment is 850g / g, and the absorption rate of physiological saline is 88g / g.
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Abstract
Description
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Application Information
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