A kind of preparation method of antibacterial superabsorbent resin
A high water-absorbent resin and antibacterial technology, applied in the field of functional polymer chemical additives, can solve the problems of microbial odor, water-absorbent resin particles are easy to breed, and limit product application, achieving good antibacterial, good antibacterial effect, Molecular cross-linking uniform effect
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[0016] A method for preparing an antibacterial superabsorbent resin, which consists of the following raw materials in parts by weight:
[0017] Acrylic acid 100-300, 50% sodium hydroxide solution 100-350, acryloyl morpholine 5-10, composite crosslinking agent 5-10, ultrafine silica 1-2, deionized water 100-300, initiator 0.5 -2, 25% aluminum sulfate 20-40, ethylene glycol 15-30, nano silver antibacterial agent 0.01-0.02; the preparation method is as follows:
[0018] (1) Add acrylic acid and deionized water to the reactor, add 50% sodium hydroxide solution to neutralize, add acryloyl morpholine, ultrafine silica and composite crosslinking agent; by introducing monomer acryloyl morpholine , giving the product antibacterial and bactericidal properties.
[0019] (2) Deoxygenate with nitrogen for 30 minutes, add an initiator to initiate the polymerization reaction at 20-30°C, and the temperature will no longer rise as the end of the reaction;
[0020] (3) The colloid is granulat...
Embodiment 1
[0029] Raw material composition and the parts by weight of each composition are:
[0030] Acrylic 180
[0031] 50% sodium hydroxide solution 195
[0032] Acryloylmorpholine 8
[0033] Composite crosslinking agent 8
[0034] Ultrafine Silica 1.5
[0035] Deionized water 210
[0036] Initiator 1.2
[0037] 1 Add the above-mentioned parts by weight of acrylic acid and deionized water into the reactor, add 50% sodium hydroxide solution for neutralization, add acryloyl morpholine, ultrafine silica and composite cross-linking agent, and pass high-purity nitrogen gas to remove oxygen.
[0038] 2. Add an initiator to polymerize at 25°C, and the temperature will no longer rise as the end of the reaction.
[0039] 3. After the reaction, the colloid obtained is granulated, dried and crushed to obtain water-absorbent resin particles.
[0040] 4. Add 24 parts of ethylene glycol (containing nano-silver antibacterial agent 0.015), 29 parts of 25% aluminum sulfate to the granules, mix...
Embodiment 2
[0042] Raw material composition and the parts by weight of each composition are:
[0043] Acrylic 160
[0044] 50% sodium hydroxide solution 185
[0045] Acryloylmorpholine 6
[0046] Composite crosslinking agent 6
[0047] Ultrafine silica 1
[0048] Deionized water 150
[0049] Initiator 0.6
[0050] 1. Add the above weight parts of acrylic acid and deionized water into the reactor, add 50% sodium hydroxide solution for neutralization, add acryloyl morpholine, ultrafine silica and composite crosslinking agent, and pass high-purity nitrogen gas Deoxygenation.
[0051] 2. Add an initiator to polymerize at 20°C, and the temperature will no longer rise as the end of the reaction.
[0052] 3. After the reaction, the colloid obtained is granulated, dried and crushed to obtain water-absorbent resin particles.
[0053] 4. Add 18 parts of ethylene glycol (including 0.01 nano-silver antibacterial agent) and 22 parts of 25% aluminum sulfate to the granules, mix them evenly, and...
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