Preparation method and application of bacteriostatic and deodorant SAP (super absorbent polymer)
A superabsorbent resin and the technology of its preparation process, which are applied in antibacterial and deodorizing superabsorbent resin and its application field, can solve the problems affecting the application of silver ion antibacterial agents, low silver loading, limited antibacterial effect, etc., and achieve excellent antibacterial effect Effects of deodorizing performance, excellent water absorption performance, and sustained-release antibacterial effect
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Embodiment 1
[0067] Accurately weigh 200g of acrylic acid, 70g of sodium hydroxide, 210g of deionized water, 0.2g of N,N'-methylenebisacrylamide, 0.1g of sodium bisulfite, 0.2g of ammonium persulfate, 0.01g of polyvinylpyrrolidone, and Methylcellulose 0.1g, polyethylene glycol diglycidyl ether, polyethylene glycol 200 composite cross-linking agent 0.6g configured in a molar ratio of 1:1, nano silicon dioxide 10g, antibacterial agent 2g. Wherein, the antibacterial agent of the present embodiment is amino acid chelated nano-silver, and 1 g of antibacterial agent is added in the initial reaction crosslinking stage, 1 g of antibacterial agent is added in the surface crosslinking stage, 0.2 g of titanate coupling agent is adopted, and then press Said steps are prepared:
[0068] 1) After mixing acrylic acid and deionized water, add sodium hydroxide for neutralization.
[0069] 2) Add polyvinylpyrrolidone and amino acid chelated nano-silver to the reaction system, stir and mix, then ultrasonica...
Embodiment 2
[0074] Accurately weigh 200g of acrylic acid, 80g of sodium hydroxide, the degree of neutralization of the acrylic acid monomer solution in this example is 72%, 260g of deionized water, 0.2g of N,N'-methylenebisacrylamide, sodium bisulfite 0.1g, ammonium persulfate 0.2g, polyvinylpyrrolidone 8g, sodium pyrophosphate decahydrate 6g, polyethylene glycol diglycidyl ether, pentaerythritol are configured by 1:1 molar ratio of composite crosslinking agent 8g, nano titanium dioxide 15g, Antibacterial agent 20g. Wherein, the antibacterial agent of the present embodiment is composed of amino acid nano-silver chelate and chitosan nano-silver ion chelate in a ratio of 1:1 in parts by mass, and 10 g of antibacterial agent is added in the initial reaction cross-linking stage, and cross-linked on the surface. In the linking stage, 10 g of antibacterial agent was added, 0.2 g of titanate coupling agent was used, and then a core-shell superabsorbent resin with a three-dimensional cross-linked...
Embodiment 3
[0076] In this embodiment, the antibacterial agent is not added in the polymerization and preliminary crosslinking stages of the acrylic monomer, but the antibacterial agent is added in the surface treatment stage of the composite crosslinking agent. Accurately weigh 150g of acrylic acid, 55g of sodium hydroxide, 200g of deionized water, 0.1g of N,N'-methylenebisacrylamide, 0.1g of sodium sulfite, 0.2g of sodium persulfate, 3g of polyvinylpyrrolidone, and sodium pyrophosphate decahydrate 3g, polyethylene glycol diglycidyl ether, pentaerythritol 3g of composite cross-linking agent configured in a molar ratio of 1:1, nano-titanium dioxide 15g, antibacterial agent 10g, and silane coupling agent 0.2g. Wherein, the antibacterial agent of the present embodiment is composed of amino acid nano-silver chelate and chitosan nano-silver ion chelate in a ratio of 1:1 in parts by mass, 5g of silver-based antibacterial agent, 5g of tea polyphenols, and 10g of antibacterial The agent is added...
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