Preparation method of membrane-like high-molecular water-absorbent resin
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A polymer water-absorbing and resin-based technology, applied in the field of sanitary products, can solve problems such as poor liquid absorption performance and toxic components
Pending Publication Date: 2021-11-12
FUJIAN HENGAN HYGIENE MATERIAL
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Problems solved by technology
[0008] Therefore, in view of the above problems, the present invention provides a method for preparing a film-like polymer water-absorbent resin, which solves the defects of the prior art polymer water-absorbent resin containing toxic components and poor liquid absorption performance.
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Embodiment 1
[0035] A method for preparing a film-like polymer water-absorbent resin, comprising the following preparation steps:
[0036] (1) The preparation of acrylic acid monomer solution: get the acrylic acid of 100 weight parts, the sodium hydroxide of 30 weight parts, the sodium trimetaphosphate of 3 weight parts, add the deionized water of 200 weight parts, stir;
[0037] (2) Deoxygenation treatment: the acrylic acid monomer solution prepared in step (1) is sent into a stirring tank, which has a mechanical stirring rod in the stirring tank, and the top of the stirring tank is provided with a nitrogen delivery pipe for feeding nitrogen, By starting the mechanical stirring rod, and continuously blowing nitrogen gas during the stirring process to remove the oxygen in the solution; the stirring time is 30min;
[0038] (3) Preparation of chitosan solution: get 12 parts by weight of chitosan, add mass solubility to be 1% in acetic acid solution, dissolve chitosan by continuous stirring f...
Embodiment 2
[0045] A method for preparing a film-like polymer water-absorbent resin, comprising the following preparation steps:
[0046] (1) The preparation of acrylic acid monomer solution: get the acrylic acid of 100 weight parts, the sodium hydroxide of 30 weight parts, the sodium trimetaphosphate of 3 weight parts, add deionized water, stir;
[0047] (2) Deoxygenation treatment: in the acrylic acid monomer solution that step (1) makes, feed nitrogen to remove the oxygen in the solution;
[0048] (3) Preparation of chitosan solution: get 18 parts by weight of chitosan, add mass solubility to 1% acetic acid solution, dissolve chitosan by continuous stirring for 15min, and continue nitrogen gas to make chitosan solution Oxygen removal in the medium; the temperature is controlled at 0°C;
[0049] (4) Preparation of acrylamide monomer solution: take 70 parts by weight of acrylamide, 20 parts by weight of sodium hydroxide, and 5 parts by weight of sodium trimetaphosphate, add deionized wa...
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Abstract
The invention relates to the field of hygienic products, provides a preparation method of membrane-shaped high-molecular water-absorbent resin, and solves the defects that high-molecular water-absorbent resin in the prior art contains toxic components and is poor in liquid absorption performance. The method comprises the following steps: (1) preparing an acrylic monomer solution; (2) deoxidizing treatment; (3) preparing a chitosan solution; (4) preparing an acrylamide monomer solution; (5) pretreatment of nano silicon dioxide; (6) slowly dropwise adding the acrylic monomer prepared in the step (1) and the acrylamide monomer solution prepared in the step (4) into the rest of the chitosan solution prepared in the step (3), and then adding the product treated in the step (5) to obtain a mixture; and (7) initiating polymerization treatment: feeding the mixture prepared in the step (6) into an ultraviolet irradiation chamber, and carrying out ultraviolet irradiation treatment for 1-2 hours to obtain the membrane-like high-molecular water-absorbent resin.
Description
technical field [0001] The invention relates to the field of sanitary products, in particular to a preparation method of a film-shaped polymer water-absorbing resin. Background technique [0002] Superabsorbent resin is a new type of functional polymer material with low cross-linking density and good hydrophilicity. It can further enhance the performance of a certain aspect, such as salt resistance, pressure resistance, water retention, etc., so it has extremely wide applications in the fields of daily use, hygiene, medicine, agriculture, forestry, food, etc., and it is a class with great development potential. , functional polymer materials with application value and economic benefits. [0003] According to the source of raw materials, superabsorbent resins can generally be divided into starch-based superabsorbent resins, cellulose-based superabsorbent resins, and synthetic superabsorbent resins. Starch-based superabsorbent resins are the earliest developed synthetic super...
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