CN116942881A - Absorbent body of disposable urine isolation pad and preparation method thereof - Google Patents
Absorbent body of disposable urine isolation pad and preparation method thereof Download PDFInfo
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- CN116942881A CN116942881A CN202310746127.7A CN202310746127A CN116942881A CN 116942881 A CN116942881 A CN 116942881A CN 202310746127 A CN202310746127 A CN 202310746127A CN 116942881 A CN116942881 A CN 116942881A
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- acrylonitrile
- polypropylene fiber
- disposable urine
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Links
- 210000002700 urine Anatomy 0.000 title claims abstract description 45
- 238000002955 isolation Methods 0.000 title claims abstract description 11
- 238000002360 preparation method Methods 0.000 title claims description 51
- 230000002745 absorbent Effects 0.000 title claims description 15
- 239000002250 absorbent Substances 0.000 title claims description 15
- -1 polypropylene Polymers 0.000 claims abstract description 90
- 239000004743 Polypropylene Substances 0.000 claims abstract description 88
- 229920001155 polypropylene Polymers 0.000 claims abstract description 88
- 239000000835 fiber Substances 0.000 claims abstract description 87
- 229920001577 copolymer Polymers 0.000 claims abstract description 52
- 239000006096 absorbing agent Substances 0.000 claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000004359 castor oil Substances 0.000 claims abstract description 27
- 235000019438 castor oil Nutrition 0.000 claims abstract description 27
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims abstract description 27
- 125000006850 spacer group Chemical group 0.000 claims abstract description 26
- 229920001131 Pulp (paper) Polymers 0.000 claims abstract description 25
- 239000004970 Chain extender Substances 0.000 claims abstract description 23
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 6
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 32
- 150000008360 acrylonitriles Chemical class 0.000 claims description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- 239000003999 initiator Substances 0.000 claims description 14
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 11
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 10
- 238000006116 polymerization reaction Methods 0.000 claims description 9
- JVYDLYGCSIHCMR-UHFFFAOYSA-N 2,2-bis(hydroxymethyl)butanoic acid Chemical compound CCC(CO)(CO)C(O)=O JVYDLYGCSIHCMR-UHFFFAOYSA-N 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 8
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 7
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 7
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 7
- 239000005543 nano-size silicon particle Substances 0.000 claims description 7
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 7
- 235000012239 silicon dioxide Nutrition 0.000 claims description 7
- FRQQKWGDKVGLFI-UHFFFAOYSA-N 2-methylundecane-2-thiol Chemical compound CCCCCCCCCC(C)(C)S FRQQKWGDKVGLFI-UHFFFAOYSA-N 0.000 claims description 5
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 claims description 5
- ZGTMUACCHSMWAC-UHFFFAOYSA-L EDTA disodium salt (anhydrous) Chemical compound [Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O ZGTMUACCHSMWAC-UHFFFAOYSA-L 0.000 claims description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 5
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 claims description 5
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 5
- SURQXAFEQWPFPV-UHFFFAOYSA-L iron(2+) sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Fe+2].[O-]S([O-])(=O)=O SURQXAFEQWPFPV-UHFFFAOYSA-L 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 229940096992 potassium oleate Drugs 0.000 claims description 5
- MLICVSDCCDDWMD-KVVVOXFISA-M potassium;(z)-octadec-9-enoate Chemical compound [K+].CCCCCCCC\C=C/CCCCCCCC([O-])=O MLICVSDCCDDWMD-KVVVOXFISA-M 0.000 claims description 5
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 5
- FRIBMENBGGCKPD-UHFFFAOYSA-N 3-(2,3-dimethoxyphenyl)prop-2-enal Chemical compound COC1=CC=CC(C=CC=O)=C1OC FRIBMENBGGCKPD-UHFFFAOYSA-N 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 claims description 3
- XWGJFPHUCFXLBL-UHFFFAOYSA-M rongalite Chemical compound [Na+].OCS([O-])=O XWGJFPHUCFXLBL-UHFFFAOYSA-M 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 2
- 239000011121 hardwood Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000007873 sieving Methods 0.000 claims description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims 1
- 239000012212 insulator Substances 0.000 claims 1
- 239000001294 propane Substances 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 abstract description 30
- 230000000694 effects Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 18
- 230000000052 comparative effect Effects 0.000 description 14
- 230000035699 permeability Effects 0.000 description 8
- 238000004132 cross linking Methods 0.000 description 7
- 239000003995 emulsifying agent Substances 0.000 description 6
- 125000004185 ester group Chemical group 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 238000004220 aggregation Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- XLNOKJLJDWVOQP-UHFFFAOYSA-L disodium;formaldehyde;sulfite Chemical compound [Na+].[Na+].O=C.[O-]S([O-])=O XLNOKJLJDWVOQP-UHFFFAOYSA-L 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 239000004831 Hot glue Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 229920000578 graft copolymer Polymers 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- JYLTYGKNPRAOJY-UHFFFAOYSA-N prop-2-enamide;prop-2-enenitrile;prop-2-enoic acid Chemical compound C=CC#N.NC(=O)C=C.OC(=O)C=C JYLTYGKNPRAOJY-UHFFFAOYSA-N 0.000 description 1
- UZMKOEWHQQPOBJ-UHFFFAOYSA-M sodium;2,3-dihydroxypropane-1-sulfonate Chemical compound [Na+].OCC(O)CS([O-])(=O)=O UZMKOEWHQQPOBJ-UHFFFAOYSA-M 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
- A61L15/24—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/18—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing inorganic materials
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/20—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing organic materials
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
- A61L15/34—Oils, fats, waxes or natural resins
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/40—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing ingredients of undetermined constitution or reaction products thereof, e.g. plant or animal extracts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/42—Use of materials characterised by their function or physical properties
- A61L15/60—Liquid-swellable gel-forming materials, e.g. super-absorbents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2400/00—Materials characterised by their function or physical properties
- A61L2400/12—Nanosized materials, e.g. nanofibres, nanoparticles, nanowires, nanotubes; Nanostructured surfaces
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Epidemiology (AREA)
- Animal Behavior & Ethology (AREA)
- Materials Engineering (AREA)
- Hematology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Botany (AREA)
- Zoology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Inorganic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Abstract
The application discloses an absorber of a disposable urine spacer and a production method thereof, which relate to the field of paper diapers and are prepared from the following raw materials in parts by weight: 30-60 parts of butadiene-acrylonitrile-butyl acrylate copolymer; 10-20 parts of wood pulp; 20-40 parts of modified polypropylene fiber; the modified polypropylene fiber is prepared by modifying the following raw materials: polypropylene fiber, hydrophilic chain extender, triethylamine, ethylenediamine and castor oil. The application has the effect of improving the water absorption capacity of the urine isolation pad.
Description
Technical Field
The application relates to the field of paper diapers, in particular to an absorber of a disposable urine spacer and a preparation method thereof.
Background
The paper diaper mainly comprises a surface layer non-woven fabric, a middle composite core body absorption layer body and a bottom impermeable film, wherein the composite core body is used as the most important absorption function structure of the paper diaper, and liquid absorption is carried out by using high water absorption resin, and the existing absorber is compositely fixed with the non-woven fabric and the impermeable film through hot melt adhesive, so that the absorption of liquid in the absorber is poor, the utilization rate of the general high water absorption resin is low, and the problems of large quantity of the high water absorption resin to be used, poor diffusivity and the like are caused.
Therefore, the inventors have considered that development of a urine spacer absorber having a large water absorption capacity is required.
Disclosure of Invention
The application provides an absorber of a disposable urine isolation pad and a preparation method thereof in order to improve the water absorption capacity of the urine isolation pad.
In a first aspect, the present application provides a disposable urine spacer absorber, which adopts the following technical scheme:
an absorber of a disposable urine isolation pad comprises the following raw materials in parts by weight: 30-60 parts of butadiene-acrylonitrile-butyl acrylate copolymer; 10-20 parts of wood pulp; 20-40 parts of modified polypropylene fiber; the modified polypropylene fiber is prepared by modifying the following raw materials: polypropylene fiber, hydrophilic chain extender, triethylamine, ethylenediamine and castor oil.
By adopting the technical scheme, the polypropylene fiber is modified, double bonds exist in the castor oil, the polypropylene fiber can be crosslinked when modified, the crosslinking degree of the polypropylene fiber is improved, and meanwhile, the ester group in the castor oil can strengthen the acting force and cohesive energy among molecules, so that the air permeability of the polypropylene fiber is improved; the modified polypropylene fiber can better connect the butadiene-acrylonitrile-butyl acrylate copolymer and the wood pulp together, so that the cohesiveness of the absorber is increased, the wood pulp has a diversion effect in the components, water can better diffuse into the absorber, and therefore the problem of water side leakage is effectively reduced.
Preferably, the preparation method of the modified polypropylene fiber comprises the following steps: heating and mixing 20-40 parts by weight of castor oil, 2-8 parts by weight of a hydrophilic chain extender and 10-20 parts by weight of polypropylene fiber, adding 1-3 parts by weight of triethylamine and 2-6 parts by weight of ethylenediamine, stirring, and drying to obtain the modified polypropylene fiber.
Through adopting above-mentioned technical scheme, contain polyhydroxy functional group in the castor oil, form the network structure that has certain crosslinking degree after mixing with polypropylene fiber, the effort between the polypropylene fiber can be strengthened to the ester group in the castor oil, improve polypropylene fiber's stability, castor oil cooperates with polypropylene fiber jointly, amine compounds such as triethylamine and ethylenediamine take place the reaction with the polypropylene fiber with hydrophilic chain extender simultaneously, link the molecular chain of polypropylene fiber, make the polypropylene fiber form long chain structure, thereby improve the crosslinking degree of polypropylene fiber and other components, make butadiene-acrylonitrile-butyl acrylate copolymer and wood pulp can be better adhere to on the modified can polypropylene fiber, improve the water absorption effect of absorber.
Preferably, the weight ratio of the polypropylene fiber to the castor oil to the hydrophilic chain extender is 1: (2.4-2.6): (0.12-0.16).
Through adopting above-mentioned technical scheme, when polypropylene fiber, castor oil and hydrophilic chain extender are in specific weight ratio, polypropylene fiber, castor oil and hydrophilic chain extender three cooperate jointly, make the molecular effort between the polypropylene fiber obtain strengthening to help improving polypropylene fibrous mechanical properties, make the feel of absorber softer, laminating human skin.
Preferably, the hydrophilic chain extender comprises one of 2, 2-dimethylolbutyric acid and sodium 1, 2-dihydroxy-3-propane sulfonate.
By adopting the technical scheme, the polypropylene fiber can form a long-chain structure by selecting a proper hydrophilic chain extender, so that the crosslinking degree of the polypropylene fiber and other components is improved, and the water absorption effect of the absorber is improved.
Preferably, the preparation method of the butadiene-acrylonitrile-butyl acrylate copolymer comprises the following steps: 240-270 parts by weight of water, 10-30 parts by weight of acrylonitrile, 10-30 parts by weight of butyl acrylate, 1-3 parts by weight of sodium dodecyl benzene sulfonate, 0.5-1.5 parts by weight of potassium oleate, 0.1-0.9 part by weight of tertiary dodecyl mercaptan, 0.1-0.2 part by weight of ferrous sulfate heptahydrate, 0.1-0.2 part by weight of disodium ethylenediamine tetraacetate, 0.1-0.2 part by weight of sodium formaldehyde sulfoxylate and 0.5-1.5 parts by weight of anhydrous sodium carbonate are stirred and mixed, and 50-70 parts by weight of butadiene and 0.1-0.2 part by weight of initiator are added for stirring and polymerization reaction, so that the butadiene-acrylonitrile-butyl acrylate copolymer is obtained.
By adopting the technical scheme, the butadiene-acrylonitrile-butyl acrylate copolymer is prepared by adopting the method, so that a large amount of ester groups are contained in the butadiene-acrylonitrile-butyl acrylate copolymer, the flexibility and the thermal stability of the butadiene-acrylonitrile-butyl acrylate copolymer are improved, urine can be better absorbed when the butadiene-acrylonitrile-butyl acrylate copolymer is contacted with urine, and meanwhile, the reaction rate for preparing the butadiene-acrylonitrile-butyl acrylate copolymer can be improved by adding an initiator and an emulsifier; the acrylonitrile and butyl acrylate as the monomer of the copolymer have a large amount of hydrophilic groups, can absorb a large amount of moisture while keeping the moisture from flowing out, thereby improving the water absorption performance of the absorber.
Preferably, the acrylonitrile is modified acrylonitrile, and the preparation method of the modified acrylonitrile comprises the following steps: 20-30 parts by weight of acrylonitrile, 20-30 parts by weight of acrylamide, 5-10 parts by weight of vinyltriethoxysilane, 2-6 parts by weight of sodium dodecyl sulfate, 1-3 parts by weight of potassium persulfate and 20-25 parts by weight of water are sequentially mixed and stirred for reaction, and then 10-30 parts by weight of nano silicon dioxide is added for continuous stirring, so that the modified acrylonitrile is obtained.
According to the technical scheme, the acrylonitrile is modified, the nano silicon dioxide and the acrylamide are used for modifying the acrylonitrile, the vinyl triethoxysilane is used as a modifier, the sodium dodecyl sulfate is used as an emulsifier, and the potassium persulfate is used as an initiator, so that the acrylonitrile and the acrylamide are compounded and polymerized, the modified acrylonitrile has better stability and good water absorption performance, meanwhile, hydrophilic groups in the components can be exposed by the initiator, the water absorption of the modified acrylonitrile prepared by jointly modifying the acrylonitrile and the acrylamide is enhanced, the water absorption of an absorber is increased, and the emulsifier can promote aggregation of the acrylonitrile and the acrylamide, so that the water absorption of the modified acrylonitrile is effectively improved.
Preferably, the initiator comprises one of cumene hydroperoxide and di-tert-butyl peroxide.
By adopting the technical scheme, the polymerization degree of the butadiene-acrylonitrile-butyl acrylate copolymer can be higher by selecting a proper initiator, so that the water absorption performance of the absorber is improved.
Preferably, the wood pulp is hardwood pulp.
By adopting the technical scheme, broad leaf wood pulp is selected to be favorable for reducing wet weight loss, so that the butadiene-acrylonitrile-butyl acrylate copolymer and the modified polypropylene fiber are connected more tightly, and the water absorption capacity of the absorber is improved.
Preferably, the length of the modified polypropylene fiber is 5-10mm.
By adopting the technical scheme, the modified polypropylene fiber with proper length is selected, so that a large amount of moisture can be absorbed while the moisture is kept from flowing out, and the water absorption performance of the absorber is improved.
In a second aspect, the present application provides a method for preparing an absorbent body for a disposable urine spacer, comprising the steps of: the absorbent is obtained by mixing and stirring wood pulp, modified polypropylene fiber and butadiene-acrylonitrile-butyl acrylate copolymer after sieving.
By adopting the technical scheme, the urine isolation pad absorber with high water absorption capacity can be prepared by adopting the method.
In summary, the application has the following beneficial technical effects:
1. according to the application, the polypropylene fiber is modified, double bonds exist in the castor oil, the polypropylene fiber can be crosslinked when modified, the crosslinking degree of the polypropylene fiber is improved, and meanwhile, the ester group in the castor oil can strengthen the acting force and cohesive energy among molecules, so that the air permeability of the polypropylene fiber is improved; the modified polypropylene fiber can better connect the butadiene-acrylonitrile-butyl acrylate copolymer and the wood pulp together, so that the cohesiveness of the absorber is increased, the wood pulp has a diversion effect in the components, water can better diffuse into the absorber, and therefore the problem of water side leakage is effectively reduced.
2. According to the application, the acrylonitrile is modified, the nano silicon dioxide and the acrylamide are used for modifying the acrylonitrile, the vinyl triethoxysilane is used as a modifier, the sodium dodecyl sulfate is used as an emulsifier, and the potassium persulfate is used as an initiator, so that the acrylonitrile and the acrylamide are compounded and polymerized, the modified acrylonitrile has better stability and good water absorption performance, meanwhile, the initiator can expose hydrophilic groups in the components, the water absorption of the modified acrylonitrile prepared by the co-modification of the acrylonitrile and the acrylamide is enhanced, the water absorption of an absorber is increased, and the emulsifier can promote the aggregation of the acrylonitrile and the acrylamide, so that the water absorption of the modified acrylonitrile is effectively improved.
Detailed Description
The present application will be described in further detail with reference to examples and comparative examples.
Preparation example
Preparation example 1
A preparation method of butadiene-acrylonitrile-butyl acrylate copolymer, which comprises the following steps: 240kg of water, 10kg of acrylonitrile, 10kg of butyl acrylate, 1kg of sodium dodecyl benzene sulfonate, 0.5kg of potassium oleate, 0.1kg of tertiary dodecyl mercaptan, 0.1kg of ferrous sulfate heptahydrate, 0.1kg of disodium ethylenediamine tetraacetate, 0.1kg of sodium formaldehyde sulfoxylate and 0.5kg of anhydrous sodium carbonate are sequentially put into a polymerization kettle, stirred and mixed for 5min at a temperature of 60 ℃, 50kg of butadiene and 0.1kg of cumene hydroperoxide initiator are added, and polymerization reaction is started for 12h at a temperature of 5 ℃ to obtain a butadiene-acrylonitrile-butyl acrylate copolymer.
Preparation example 2
A preparation method of butadiene-acrylonitrile-butyl acrylate copolymer, which comprises the following steps: 270kg of water, 30kg of acrylonitrile, 30kg of butyl acrylate, 3kg of sodium dodecyl benzene sulfonate, 1.5kg of potassium oleate, 0.9kg of tertiary dodecyl mercaptan, 0.2kg of ferrous sulfate heptahydrate, 0.2kg of disodium ethylenediamine tetraacetate, 0.2kg of formaldehyde sodium sulfite and 1.5kg of anhydrous sodium carbonate are sequentially put into a polymerization kettle, stirred and mixed for 5min at the temperature of 60 ℃, 70kg of butadiene and 0.2kg of di-tert-butyl peroxide initiator are added, and polymerization reaction is started for 12h at the temperature of 5 ℃ to obtain the butadiene-acrylonitrile-butyl acrylate copolymer.
Preparation example 3
A preparation method of butadiene-acrylonitrile-butyl acrylate copolymer, which comprises the following steps: 260kg of water, 20kg of acrylonitrile, 20kg of butyl acrylate, 2kg of sodium dodecyl benzene sulfonate, 1kg of potassium oleate, 0.5kg of tertiary dodecyl mercaptan, 0.15kg of ferrous sulfate heptahydrate, 0.15kg of disodium ethylenediamine tetraacetate, 0.15kg of formaldehyde sodium sulfite and 1kg of anhydrous sodium carbonate are sequentially put into a polymerization kettle, stirred and mixed for 5min at a temperature of 60 ℃, 60kg of butadiene and 0.15kg of cumene hydroperoxide initiator are added, and polymerization reaction is started for 12h at a temperature of 5 ℃ to obtain the butadiene-acrylonitrile-butyl acrylate copolymer.
Preparation example 4
A preparation method of butadiene-acrylonitrile-butyl acrylate copolymer, which comprises the following steps: the difference from preparation example 3 is that: the acrylonitrile is modified acrylonitrile, and the preparation method of the modified acrylonitrile comprises the following steps: 20kg of acrylonitrile, 20kg of acrylamide, 5kg of vinyltriethoxysilane, 2kg of sodium dodecyl sulfate, 1kg of potassium persulfate and 20kg of water are sequentially put into a reaction kettle, mixed and stirred for 1.5 hours at the temperature of 80 ℃, 10kg of nano silicon dioxide is added, and stirring is continued for 30 minutes at the rotating speed of 1000r/min, so that the modified acrylonitrile is obtained.
Preparation example 5
A preparation method of butadiene-acrylonitrile-butyl acrylate copolymer, which comprises the following steps: the difference from preparation example 3 is that: the acrylonitrile is modified acrylonitrile, and the preparation method of the modified acrylonitrile comprises the following steps: 30kg of acrylonitrile, 30kg of acrylamide, 10kg of vinyltriethoxysilane, 6kg of sodium dodecyl sulfate, 3kg of potassium persulfate and 25kg of water are sequentially put into a reaction kettle, mixed and stirred for 1.5 hours at the temperature of 80 ℃, and then 30kg of nano silicon dioxide is added to continuously stir for 30 minutes at the rotating speed of 1000r/min, so that the modified acrylonitrile is obtained.
Preparation example 6
A preparation method of butadiene-acrylonitrile-butyl acrylate copolymer, which comprises the following steps: the difference from preparation example 3 is that: the acrylonitrile is modified acrylonitrile, and the preparation method of the modified acrylonitrile comprises the following steps: 25kg of acrylonitrile, 25kg of acrylamide, 7.5kg of vinyltriethoxysilane, 6kg of sodium dodecyl sulfate, 3kg of potassium persulfate and 25kg of water are sequentially put into a reaction kettle, mixed and stirred for 1.5h at the temperature of 80 ℃, and then 30kg of nano silicon dioxide is added to continuously stir for 30min at the rotating speed of 1000r/min, so that the modified acrylonitrile is obtained.
Examples
Example 1
A preparation method of an absorber of a disposable urine isolation pad comprises the following steps: 10kg of wood pulp is crushed, stirred and sieved, then is mixed and stirred with 20kg of modified polypropylene fiber and 30kg of butadiene-acrylonitrile-butyl acrylate copolymer prepared in preparation example 1 for 30min at the temperature of 60 ℃ and the rotating speed of 800r/min, and is shaped in an oven at the temperature of 100 ℃ and then is cut by a splitting machine to obtain the absorber.
The wood pulp is broad leaf wood pulp.
The preparation method of the modified polypropylene fiber comprises the following steps: 20kg of castor oil, 2kg of 1, 2-dihydroxyl-3-sodium propane sulfonate hydrophilic chain extender and 10kg of polypropylene fiber are heated to 80 ℃ and then mixed and stirred for 30min at the rotating speed of 1500r/min, then 1kg of triethylamine and 2kg of ethylenediamine are added and stirred for 10min at the rotating speed of 3000r/min, and the mixture is transferred to an oven and dried for 6h at the temperature of 80 ℃ to obtain the modified polypropylene fiber.
The length of the polypropylene fiber was 10mm.
Example 2
A preparation method of an absorber of a disposable urine isolation pad comprises the following steps: 20kg of wood pulp is crushed, stirred and sieved, then is mixed and stirred with 40kg of modified polypropylene fiber and 60kg of butadiene-acrylonitrile-butyl acrylate copolymer prepared in preparation example 1 for 30min at a temperature of 60 ℃ and a rotating speed of 800r/min, and is shaped in an oven at a temperature of 100 ℃ and then is cut by a splitting machine to obtain the absorber.
The wood pulp is broad leaf wood pulp.
The preparation method of the modified polypropylene fiber comprises the following steps: 20kg of castor oil, 2kg of 2, 2-dimethylolbutyric acid hydrophilic chain extender and 10kg of polypropylene fiber are heated to 80 ℃ and then mixed and stirred for 30min under the condition of 1500r/min of rotating speed, 1kg of triethylamine and 2kg of ethylenediamine are added and stirred for 10min under the condition of 3000r/min of rotating speed, and the mixture is transferred into an oven and dried for 6h under the condition of 80 ℃ to obtain the modified polypropylene fiber.
The length of the polypropylene fiber was 10mm.
Example 3
A preparation method of an absorber of a disposable urine isolation pad comprises the following steps: 15kg of wood pulp is crushed, stirred and sieved, then is mixed and stirred with 30kg of modified polypropylene fiber and 45kg of butadiene-acrylonitrile-butyl acrylate copolymer prepared in preparation example 1 for 30min at a temperature of 60 ℃ and a rotating speed of 800r/min, and is shaped in an oven at a temperature of 100 ℃ and then is cut by a splitting machine, so that an absorber is obtained.
The wood pulp is broad leaf wood pulp.
The preparation method of the modified polypropylene fiber comprises the following steps: 20kg of castor oil, 2kg of 2, 2-dimethylolbutyric acid hydrophilic chain extender and 10kg of polypropylene fiber are heated to 80 ℃ and then mixed and stirred for 30min under the condition of 1500r/min of rotating speed, 1kg of triethylamine and 2kg of ethylenediamine are added and stirred for 10min under the condition of 3000r/min of rotating speed, and the mixture is transferred into an oven and dried for 6h under the condition of 80 ℃ to obtain the modified polypropylene fiber.
The length of the polypropylene fiber was 10mm.
Example 4
A method for preparing an absorber of a disposable urine spacer, which is different from example 3 in that: the preparation method of the modified polypropylene fiber comprises the following steps: 40kg of castor oil, 8kg of 2, 2-dimethylolbutyric acid hydrophilic chain extender and 20kg of polypropylene fiber are heated to 80 ℃ and then mixed and stirred for 30min under the condition of 1500r/min of rotating speed, 3kg of triethylamine and 6kg of ethylenediamine are added and stirred for 10min under the condition of 3000r/min of rotating speed, and the mixture is transferred into an oven and dried for 6h under the condition of 80 ℃ to obtain the modified polypropylene fiber.
Example 5
A method for preparing an absorber of a disposable urine spacer, which is different from example 3 in that: the preparation method of the modified polypropylene fiber comprises the following steps: 30kg of castor oil, 5kg of 2, 2-dimethylolbutyric acid hydrophilic chain extender and 15kg of polypropylene fiber are heated to 80 ℃ and then mixed and stirred for 30min under the condition of 1500r/min of rotating speed, 2kg of triethylamine and 4kg of ethylenediamine are added and stirred for 10min under the condition of 3000r/min of rotating speed, and the mixture is transferred into an oven and dried for 6h under the condition of 80 ℃ to obtain the modified polypropylene fiber.
Example 6
A method for preparing an absorber of a disposable urine spacer is different from example 5 in that: in the process of preparing the modified polypropylene fiber, the input amount of the polypropylene fiber is 15kg, the input amount of castor oil is 36kg, and the input amount of the 2, 2-dimethylolbutyric acid hydrophilic chain extender is 3.6kg.
Example 7
A method for preparing an absorber of a disposable urine spacer is different from example 5 in that: in the process of preparing the modified polypropylene fiber, the input amount of the polypropylene fiber is 15kg, the input amount of castor oil is 39kg, and the input amount of the 2, 2-dihydroxymethyl butyric acid hydrophilic chain extender is 4.8kg.
Example 8
A method for preparing an absorber of a disposable urine spacer is different from example 7 in that: the butadiene-acrylonitrile-butyl acrylate copolymer obtained in preparation example 1 was replaced with the butadiene-acrylonitrile-butyl acrylate copolymer obtained in preparation example 2 in equal amounts.
Example 9
A method for preparing an absorber of a disposable urine spacer is different from example 7 in that: the butadiene-acrylonitrile-butyl acrylate copolymer obtained in preparation example 1 was replaced with the butadiene-acrylonitrile-butyl acrylate copolymer obtained in preparation example 3 in equal amounts.
Example 10
A method for preparing an absorber of a disposable urine spacer is different from example 7 in that: the butadiene-acrylonitrile-butyl acrylate copolymer obtained in preparation example 1 was replaced with the butadiene-acrylonitrile-butyl acrylate copolymer obtained in preparation example 4 in equal amounts.
Example 11
A method for preparing an absorber of a disposable urine spacer is different from example 7 in that: the butadiene-acrylonitrile-butyl acrylate copolymer obtained in preparation example 1 was replaced with the butadiene-acrylonitrile-butyl acrylate copolymer obtained in preparation example 5 in equal amounts.
Example 12
A method for preparing an absorber of a disposable urine spacer is different from example 7 in that: the butadiene-acrylonitrile-butyl acrylate copolymer obtained in preparation example 1 was replaced with the butadiene-acrylonitrile-butyl acrylate copolymer obtained in preparation example 6 in equal amounts.
Comparative example
Comparative example 1
A method for preparing an absorber of a disposable urine spacer is different from example 1 in that: the butadiene-acrylonitrile-butyl acrylate copolymer was replaced with the starch-acrylonitrile graft copolymer in equal amounts.
Comparative example 2
A method for preparing an absorber of a disposable urine spacer is different from example 1 in that: the butadiene-acrylonitrile-butyl acrylate copolymer was replaced equally with an acrylamide-acrylonitrile-acrylic acid terpolymer.
Comparative example 3
A method for preparing an absorber of a disposable urine spacer is different from example 1 in that: the modified polypropylene fibers were replaced with equivalent amounts of commercially available polypropylene fibers.
Comparative example 4
A method for preparing an absorber of a disposable urine spacer is different from example 1 in that: the modified polypropylene fiber is replaced by polyurethane in equal amount.
Performance test:
water absorption test: the urine spacer absorbers prepared in examples 1 to 12 and comparative examples 1 to 4 were completely immersed in water for 10 minutes, and the weight of the absorber before and after immersion was measured to obtain the water absorption amount.
Air permeability: the air permeability of the urine pad absorbers prepared in examples 1 to 12 and comparative examples 1 to 4 was measured by an automatic air permeability meter according to GB/T5453-1997 fabric air permeability measurement.
Tensile strength: the base films of examples 1-12 and comparative examples 1-4 were tested according to GB/T1040.3-2006.
| Examples | Water absorption capacity (g) | Air permeability mm/s | Tensile strength MPa |
| Example 1 | 224 | 1884 | 5.2 |
| Example 2 | 220 | 1869 | 5.3 |
| Example 3 | 225 | 1887 | 5.3 |
| Example 4 | 224 | 1878 | 5.7 |
| Example 5 | 227 | 1893 | 5.5 |
| Example 6 | 282 | 2248 | 5.8 |
| Example 7 | 285 | 2261 | 6.0 |
| Example 8 | 284 | 2259 | 5.9 |
| Example 9 | 288 | 2234 | 6.1 |
| Example 10 | 316 | 2263 | 9.4 |
| Example 11 | 317 | 2257 | 9.4 |
| Example 12 | 323 | 2260 | 9.6 |
| Comparative example 1 | 210 | 1455 | 4.7 |
| Comparative example 2 | 204 | 1389 | 4.4 |
| Comparative example 3 | 189 | 1473 | 4.8 |
| Comparative example 4 | 167 | 1774 | 5.1 |
According to the data comparison of the examples 1-3 and the comparative examples 1-4, the polypropylene fiber is modified, double bonds exist in castor oil, the polypropylene fiber can be crosslinked when modified, the crosslinking degree of the polypropylene fiber is improved, and meanwhile, the ester groups in the castor oil can strengthen the acting force and cohesive energy among molecules, so that the air permeability of the polypropylene fiber is improved; the modified polypropylene fiber can better connect the butadiene-acrylonitrile-butyl acrylate copolymer and the wood pulp together, so that the cohesiveness of the absorber is increased, the wood pulp has a diversion effect in the components, water can better diffuse into the absorber, and therefore the problem of water side leakage is effectively reduced.
According to the data comparison of examples 3-5, castor oil is matched with polypropylene fiber, and amine compounds such as triethylamine and ethylenediamine react with hydrophilic chain extenders to form long-chain structures on the polypropylene fiber, so that the crosslinking degree of the polypropylene fiber and other components is improved, the butadiene-acrylonitrile-butyl acrylate copolymer and wood pulp can be better attached to the modified polypropylene fiber, and the water absorption effect of the absorber is improved.
According to the data comparison of examples 5-7, when the polypropylene fiber, the castor oil and the hydrophilic chain extender are matched in a specific weight ratio, the molecular acting force among the polypropylene fiber is enhanced, so that the mechanical property of the polypropylene fiber is improved, the feel of the absorber is softer, and the absorber is attached to the skin of a human body.
According to the data comparison of examples 7-12, butadiene-acrylonitrile-butyl acrylate copolymer is prepared, so that a large amount of ester groups are contained in the butadiene-acrylonitrile-butyl acrylate copolymer, the flexibility and the thermal stability of the butadiene-acrylonitrile-butyl acrylate copolymer are improved, urine can be better absorbed when the butadiene-acrylonitrile-butyl acrylate copolymer is contacted with urine, and meanwhile, the reaction rate for preparing the butadiene-acrylonitrile-butyl acrylate copolymer can be improved by adding an initiator and an emulsifier; the acrylonitrile and butyl acrylate as the monomer of the copolymer have a large amount of hydrophilic groups, can absorb a large amount of moisture while keeping the moisture from flowing out, thereby improving the water absorption performance of the absorber.
The present application is not limited by the specific embodiments, and modifications can be made to the embodiments without creative contribution by those skilled in the art after reading the present specification, but are protected by patent laws within the scope of claims of the present application.
Claims (9)
1. An absorbent body for a disposable urine insulator, characterized in that: the composite material is prepared from the following raw materials in parts by weight: 30-60 parts of butadiene-acrylonitrile-butyl acrylate copolymer; 10-20 parts of wood pulp; 20-40 parts of modified polypropylene fiber; the modified polypropylene fiber is prepared by modifying the following raw materials: polypropylene fiber, hydrophilic chain extender, triethylamine, ethylenediamine and castor oil.
2. The absorbent body of a disposable urine spacer of claim 1, wherein: the preparation method of the modified polypropylene fiber comprises the following steps: heating and mixing 20-40 parts by weight of castor oil, 2-8 parts by weight of a hydrophilic chain extender and 10-20 parts by weight of polypropylene fiber, adding 1-3 parts by weight of triethylamine and 2-6 parts by weight of ethylenediamine, stirring, and drying to obtain the modified polypropylene fiber.
3. An absorbent body for a disposable urine compartment according to claim 2, characterized in that: the weight ratio of the polypropylene fiber to the castor oil to the hydrophilic chain extender is 1: (2.4-2.6): (0.12-0.16).
4. An absorbent body for a disposable urine compartment according to claim 2, characterized in that: the hydrophilic chain extender comprises one of 2, 2-dimethylolbutyric acid and 1, 2-dihydroxy-3-propane sodium sulfonate. Selecting proper chain extender
The absorbent body of a disposable urine spacer of claim 1, wherein: the preparation method of the butadiene-acrylonitrile-butyl acrylate copolymer comprises the following steps: 240-270 parts by weight of water, 10-30 parts by weight of acrylonitrile, 10-30 parts by weight of butyl acrylate, 1-3 parts by weight of sodium dodecyl benzene sulfonate, 0.5-1.5 parts by weight of potassium oleate, 0.1-0.9 part by weight of tertiary dodecyl mercaptan, 0.1-0.2 part by weight of ferrous sulfate heptahydrate, 0.1-0.2 part by weight of disodium ethylenediamine tetraacetate, 0.1-0.2 part by weight of sodium formaldehyde sulfoxylate and 0.5-1.5 parts by weight of anhydrous sodium carbonate are stirred and mixed, and 50-70 parts by weight of butadiene and 0.1-0.2 part by weight of initiator are added for stirring and polymerization reaction, so that the butadiene-acrylonitrile-butyl acrylate copolymer is obtained.
5. The absorbent body of a disposable urine spacer of claim 5, wherein: the acrylonitrile is modified acrylonitrile, and the preparation method of the modified acrylonitrile comprises the following steps: 20-30 parts by weight of acrylonitrile, 20-30 parts by weight of acrylamide, 5-10 parts by weight of vinyltriethoxysilane, 2-6 parts by weight of sodium dodecyl sulfate, 1-3 parts by weight of potassium persulfate and 20-25 parts by weight of water are sequentially mixed and stirred for reaction, and then 10-30 parts by weight of nano silicon dioxide is added for continuous stirring, so that the modified acrylonitrile is obtained.
6. The absorbent body of a disposable urine spacer of claim 5, wherein: the initiator comprises one of cumene hydroperoxide and di-tert-butyl peroxide.
7. The absorbent body of a disposable urine spacer of claim 1, wherein: the wood pulp is hardwood pulp.
8. The absorbent body of a disposable urine spacer of claim 1, wherein: the length of the modified polypropylene fiber is 5-10mm.
9. A preparation method of an absorber of a disposable urine isolation pad is characterized in that: an absorbent body for making a disposable urine spacer according to any one of claims 1-9, comprising the steps of: the absorbent is obtained by mixing and stirring wood pulp, modified polypropylene fiber and butadiene-acrylonitrile-butyl acrylate copolymer after sieving.
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