A kind of preparation method of sodium polyacrylate water-absorbent fiber
A sodium polyacrylate, water-absorbing fiber technology, applied in the chemical characteristics of fibers, rayon manufacturing, single-component synthetic polymer rayon and other directions, can solve the problems of strength reduction, molecular chain breakage, molecular weight reduction, etc., to improve strength and Aging resistance, improving strength and aging resistance, the effect of not easy to agglomerate
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Embodiment 1
[0041] A preparation method of sodium polyacrylate water-absorbing fiber, the steps are as follows:
[0042] A) Preparation of organically modified vermiculite powder:
[0043] Add 10 parts of lactose and 10 parts of dodecyldimethylbenzyl ammonium chloride to 100 parts of water, heat to 65°C for 5 hours, wash the product with ethanol after vacuum distillation, and dry to obtain modified lactose ,spare.
[0044] Calcinate the vermiculite at 550°C for 3 hours, then grind it into vermiculite powder; prepare 100 parts of vermiculite powder with water into a 4wt% suspension, heat it to 60°C, add 50 parts of modified lactose to the suspension, stir and keep it warm for 14 hours , and then centrifuged, filtered, and dried to obtain organically modified vermiculite powder.
[0045] B) Neutralization: 90 parts of acrylic acid and 10 parts of acrylamide were added to 200 parts of water, and then neutralized with 8 wt% sodium hydroxide aqueous solution until the pH of the system was 5....
Embodiment 2
[0049] A preparation method of sodium polyacrylate water-absorbing fiber, the steps are as follows:
[0050] A) Preparation of organically modified vermiculite powder:
[0051] Add 10 parts of lactose and 10 parts of dodecyldimethylbenzyl ammonium chloride to 100 parts of water, heat to 65°C for 5 hours, wash the product with ethanol after vacuum distillation, and dry to obtain modified lactose ,spare.
[0052] Calcinate the vermiculite at 550°C for 3 hours, then grind it into vermiculite powder; prepare 100 parts of vermiculite powder with water into a 4wt% suspension, heat it to 60°C, add 50 parts of modified lactose to the suspension, stir and keep it warm for 14 hours , and then centrifuged, filtered, and dried to obtain organically modified vermiculite powder.
[0053] B) Neutralization: 90 parts of acrylic acid and 10 parts of acrylamide were added to 200 parts of water, and then neutralized with 8 wt% sodium hydroxide aqueous solution until the pH of the system was 5....
Embodiment 3
[0060] A preparation method of sodium polyacrylate water-absorbing fiber, the steps are as follows:
[0061] A) Preparation of organically modified vermiculite powder: Add 8-parts of lactose and 8 parts of dodecyldimethylbenzyl ammonium chloride to 90 parts of water, heat to 60°C for 6 hours, and distill the product under reduced pressure Wash with ethanol, dry to obtain modified lactose, and set aside.
[0062] Calcinate the vermiculite at 500°C for 4 hours, and then grind it into vermiculite powder; prepare 90 parts of vermiculite powder with water to form a 3wt% suspension, heat it to 55°C, add 40 parts of modified lactose to the suspension, stir and keep it warm for 10 hours , and then centrifuged, filtered, and dried to obtain organically modified vermiculite powder.
[0063] B) Neutralization: 85 parts of acrylic acid and 15 parts of acrylamide were added to 150 parts of water, and then neutralized with 5 wt% sodium hydroxide aqueous solution until the pH of the system ...
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