CN116421766B - Preparation method of liquid sanitary towel absorption core - Google Patents
Preparation method of liquid sanitary towel absorption core Download PDFInfo
- Publication number
- CN116421766B CN116421766B CN202310408413.2A CN202310408413A CN116421766B CN 116421766 B CN116421766 B CN 116421766B CN 202310408413 A CN202310408413 A CN 202310408413A CN 116421766 B CN116421766 B CN 116421766B
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- Prior art keywords
- water phase
- alkyl
- acrylic
- surfactant
- acrylate
- Prior art date
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- 239000007788 liquid Substances 0.000 title claims abstract description 38
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 75
- 239000000839 emulsion Substances 0.000 claims abstract description 67
- 239000004094 surface-active agent Substances 0.000 claims abstract description 34
- -1 acrylic ester Chemical class 0.000 claims abstract description 19
- 238000002156 mixing Methods 0.000 claims abstract description 18
- 239000000178 monomer Substances 0.000 claims abstract description 18
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 15
- 150000001350 alkyl halides Chemical class 0.000 claims abstract description 13
- 238000001035 drying Methods 0.000 claims abstract description 9
- 239000004744 fabric Substances 0.000 claims abstract description 9
- 239000011248 coating agent Substances 0.000 claims abstract description 8
- 238000000576 coating method Methods 0.000 claims abstract description 8
- 125000004103 aminoalkyl group Chemical group 0.000 claims abstract description 3
- 238000005286 illumination Methods 0.000 claims abstract description 3
- 238000011282 treatment Methods 0.000 claims abstract description 3
- 239000003999 initiator Substances 0.000 claims description 30
- 230000001804 emulsifying effect Effects 0.000 claims description 29
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 22
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical class OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 19
- 239000002250 absorbent Substances 0.000 claims description 19
- 230000002745 absorbent Effects 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 18
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 14
- 125000000217 alkyl group Chemical group 0.000 claims description 13
- 229910017053 inorganic salt Inorganic materials 0.000 claims description 13
- DBCAQXHNJOFNGC-UHFFFAOYSA-N 4-bromo-1,1,1-trifluorobutane Chemical compound FC(F)(F)CCCBr DBCAQXHNJOFNGC-UHFFFAOYSA-N 0.000 claims description 8
- STVZJERGLQHEKB-UHFFFAOYSA-N ethylene glycol dimethacrylate Substances CC(=C)C(=O)OCCOC(=O)C(C)=C STVZJERGLQHEKB-UHFFFAOYSA-N 0.000 claims description 8
- 238000006116 polymerization reaction Methods 0.000 claims description 7
- 125000003837 (C1-C20) alkyl group Chemical group 0.000 claims description 6
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 6
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical group [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 125000001309 chloro group Chemical group Cl* 0.000 claims description 5
- 125000001153 fluoro group Chemical group F* 0.000 claims description 5
- 239000003112 inhibitor Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- KUDUQBURMYMBIJ-UHFFFAOYSA-N 2-prop-2-enoyloxyethyl prop-2-enoate Chemical compound C=CC(=O)OCCOC(=O)C=C KUDUQBURMYMBIJ-UHFFFAOYSA-N 0.000 claims description 4
- NQSLZEHVGKWKAY-UHFFFAOYSA-N 6-methylheptyl 2-methylprop-2-enoate Chemical compound CC(C)CCCCCOC(=O)C(C)=C NQSLZEHVGKWKAY-UHFFFAOYSA-N 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 4
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims description 3
- 125000003277 amino group Chemical group 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 3
- 229910052801 chlorine Inorganic materials 0.000 claims description 3
- 229910052731 fluorine Inorganic materials 0.000 claims description 3
- 125000005843 halogen group Chemical group 0.000 claims description 3
- 229910052740 iodine Inorganic materials 0.000 claims description 3
- ZDQNWDNMNKSMHI-UHFFFAOYSA-N 1-[2-(2-prop-2-enoyloxypropoxy)propoxy]propan-2-yl prop-2-enoate Chemical compound C=CC(=O)OC(C)COC(C)COCC(C)OC(=O)C=C ZDQNWDNMNKSMHI-UHFFFAOYSA-N 0.000 claims description 2
- OWDBMKZHFCSOOL-UHFFFAOYSA-N 2-[2-[2-(2-methylprop-2-enoyloxy)propoxy]propoxy]propyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC(C)COC(C)COC(C)COC(=O)C(C)=C OWDBMKZHFCSOOL-UHFFFAOYSA-N 0.000 claims description 2
- JHWGFJBTMHEZME-UHFFFAOYSA-N 4-prop-2-enoyloxybutyl prop-2-enoate Chemical compound C=CC(=O)OCCCCOC(=O)C=C JHWGFJBTMHEZME-UHFFFAOYSA-N 0.000 claims description 2
- SAPGBCWOQLHKKZ-UHFFFAOYSA-N 6-(2-methylprop-2-enoyloxy)hexyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCCCCCOC(=O)C(C)=C SAPGBCWOQLHKKZ-UHFFFAOYSA-N 0.000 claims description 2
- DXPPIEDUBFUSEZ-UHFFFAOYSA-N 6-methylheptyl prop-2-enoate Chemical compound CC(C)CCCCCOC(=O)C=C DXPPIEDUBFUSEZ-UHFFFAOYSA-N 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- GHKADIDUAMVZKK-UHFFFAOYSA-N OCOC(=O)C=C.OCOC(=O)C=C.OCOC(=O)C=C Chemical compound OCOC(=O)C=C.OCOC(=O)C=C.OCOC(=O)C=C GHKADIDUAMVZKK-UHFFFAOYSA-N 0.000 claims description 2
- 239000002202 Polyethylene glycol Substances 0.000 claims description 2
- 229910001514 alkali metal chloride Inorganic materials 0.000 claims description 2
- 229910052936 alkali metal sulfate Inorganic materials 0.000 claims description 2
- 229910001617 alkaline earth metal chloride Inorganic materials 0.000 claims description 2
- 125000005907 alkyl ester group Chemical group 0.000 claims description 2
- 150000005303 alkyl halide derivatives Chemical class 0.000 claims description 2
- 125000001246 bromo group Chemical group Br* 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 125000003827 glycol group Chemical group 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- ADXPHBMQMGJRRO-UHFFFAOYSA-N hydroxymethyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCO.CC(=C)C(=O)OCO.CC(=C)C(=O)OCO ADXPHBMQMGJRRO-UHFFFAOYSA-N 0.000 claims description 2
- 229920001223 polyethylene glycol Polymers 0.000 claims description 2
- 229920001451 polypropylene glycol Polymers 0.000 claims description 2
- 239000002904 solvent Substances 0.000 claims description 2
- 125000005250 alkyl acrylate group Chemical group 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 3
- 230000002045 lasting effect Effects 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000018044 dehydration Effects 0.000 abstract 1
- 238000006297 dehydration reaction Methods 0.000 abstract 1
- 239000012071 phase Substances 0.000 description 89
- 239000000463 material Substances 0.000 description 29
- 239000010410 layer Substances 0.000 description 20
- PQUXFUBNSYCQAL-UHFFFAOYSA-N 1-(2,3-difluorophenyl)ethanone Chemical compound CC(=O)C1=CC=CC(F)=C1F PQUXFUBNSYCQAL-UHFFFAOYSA-N 0.000 description 16
- 229940047670 sodium acrylate Drugs 0.000 description 16
- 238000003860 storage Methods 0.000 description 16
- 230000003068 static effect Effects 0.000 description 15
- 229940048053 acrylate Drugs 0.000 description 11
- 238000004945 emulsification Methods 0.000 description 10
- 238000010992 reflux Methods 0.000 description 9
- SONHXMAHPHADTF-UHFFFAOYSA-M sodium;2-methylprop-2-enoate Chemical compound [Na+].CC(=C)C([O-])=O SONHXMAHPHADTF-UHFFFAOYSA-M 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 7
- 239000012530 fluid Substances 0.000 description 7
- JKNCOURZONDCGV-UHFFFAOYSA-N 2-(dimethylamino)ethyl 2-methylprop-2-enoate Chemical compound CN(C)CCOC(=O)C(C)=C JKNCOURZONDCGV-UHFFFAOYSA-N 0.000 description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 6
- 239000008346 aqueous phase Substances 0.000 description 6
- 229910001628 calcium chloride Inorganic materials 0.000 description 6
- 239000001110 calcium chloride Substances 0.000 description 6
- 239000004745 nonwoven fabric Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 239000008280 blood Substances 0.000 description 5
- 210000004369 blood Anatomy 0.000 description 5
- OACXFSZVCDOBKF-UHFFFAOYSA-N 1-chlorodocosane Chemical compound CCCCCCCCCCCCCCCCCCCCCCCl OACXFSZVCDOBKF-UHFFFAOYSA-N 0.000 description 4
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 4
- WJFKNYWRSNBZNX-UHFFFAOYSA-N 10H-phenothiazine Chemical compound C1=CC=C2NC3=CC=CC=C3SC2=C1 WJFKNYWRSNBZNX-UHFFFAOYSA-N 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 229950000688 phenothiazine Drugs 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- AFGNVSCTEXUEJE-UHFFFAOYSA-N 1-chloroicosane Chemical compound CCCCCCCCCCCCCCCCCCCCCl AFGNVSCTEXUEJE-UHFFFAOYSA-N 0.000 description 2
- 125000005396 acrylic acid ester group Chemical group 0.000 description 2
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 2
- 239000012965 benzophenone Substances 0.000 description 2
- CBFCDTFDPHXCNY-UHFFFAOYSA-N icosane Chemical compound CCCCCCCCCCCCCCCCCCCC CBFCDTFDPHXCNY-UHFFFAOYSA-N 0.000 description 2
- VKOBVWXKNCXXDE-UHFFFAOYSA-N icosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCC(O)=O VKOBVWXKNCXXDE-UHFFFAOYSA-N 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- QNODIIQQMGDSEF-UHFFFAOYSA-N (1-hydroxycyclohexyl)-phenylmethanone Chemical compound C=1C=CC=CC=1C(=O)C1(O)CCCCC1 QNODIIQQMGDSEF-UHFFFAOYSA-N 0.000 description 1
- VFWCMGCRMGJXDK-UHFFFAOYSA-N 1-chlorobutane Chemical group CCCCCl VFWCMGCRMGJXDK-UHFFFAOYSA-N 0.000 description 1
- 239000012956 1-hydroxycyclohexylphenyl-ketone Substances 0.000 description 1
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- JTHZUSWLNCPZLX-UHFFFAOYSA-N 6-fluoro-3-methyl-2h-indazole Chemical compound FC1=CC=C2C(C)=NNC2=C1 JTHZUSWLNCPZLX-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical group CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- 125000000304 alkynyl group Chemical group 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 125000000751 azo group Chemical group [*]N=N[*] 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- WURBFLDFSFBTLW-UHFFFAOYSA-N benzil Chemical compound C=1C=CC=CC=1C(=O)C(=O)C1=CC=CC=C1 WURBFLDFSFBTLW-UHFFFAOYSA-N 0.000 description 1
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- MQDJYUACMFCOFT-UHFFFAOYSA-N bis[2-(1-hydroxycyclohexyl)phenyl]methanone Chemical compound C=1C=CC=C(C(=O)C=2C(=CC=CC=2)C2(O)CCCCC2)C=1C1(O)CCCCC1 MQDJYUACMFCOFT-UHFFFAOYSA-N 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 125000004093 cyano group Chemical group *C#N 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 239000000693 micelle Substances 0.000 description 1
- CUGSTRFZQIRZAR-UHFFFAOYSA-N n,n-dimethylpropan-1-amine;hydrobromide Chemical compound [Br-].CCC[NH+](C)C CUGSTRFZQIRZAR-UHFFFAOYSA-N 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- YRHRIQCWCFGUEQ-UHFFFAOYSA-N thioxanthen-9-one Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3SC2=C1 YRHRIQCWCFGUEQ-UHFFFAOYSA-N 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000010626 work up procedure Methods 0.000 description 1
Classifications
-
- 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
- A61F13/534—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 having an inhomogeneous composition through the thickness of the pad
-
- 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
- A61L15/24—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof
-
- 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
- A61L15/425—Porous materials, e.g. foams or sponges
-
- 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
- A61L15/48—Surfactants
-
- 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
- A61F2013/16—Sanitary towels; Means for supporting or fastening them
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Veterinary Medicine (AREA)
- Epidemiology (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Hematology (AREA)
- Materials Engineering (AREA)
- Vascular Medicine (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Polymerisation Methods In General (AREA)
Abstract
The invention provides a preparation method of a liquid sanitary towel absorption core body, which comprises the following steps: s1, mixing an acrylic ester monomer 1, a cross-linking agent, a photoinitiator and a surfactant to obtain an oil phase 1, and then adding a water phase A and a water phase B to obtain HIPE emulsion 1; s2, mixing an acrylic ester monomer 2, a cross-linking agent, a photoinitiator and a surfactant to obtain an oil phase 2, and then adding a water phase C and a water phase D to obtain HIPE emulsion 2; s3, coating HIPE emulsion 1 and HIPE emulsion 2 on cloth, and carrying out dehydration, drying and slitting after illumination and steam treatment to obtain a liquid sanitary towel absorption core; wherein the surfactant is obtained by reacting amino alkyl acrylate with haloalkane and/or haloalkane derivative. The invention improves the liquid transmission capacity, ensures that the product has the effects of high-efficiency absorption and lasting dryness, overcomes the defects existing in the prior art, and has good application prospect.
Description
Technical Field
The invention belongs to the technical field of foam material absorption cores, and particularly relates to a preparation method of a liquid sanitary towel absorption core.
Background
The liquid sanitary towel is called as the liquid sanitary towel because the raw material of the absorbent core body is derived from the liquid material, and the product has the characteristics of light weight, air permeability, zero touch, dryness, quick absorption and the like compared with the traditional sanitary towel. Although the name of the sanitary towel is liquid, the sanitary towel does not contain liquid or cotton, but adopts a microporous absorbent material made of novel technology, and the absorbent core is characterized by being full of holes (high porosity), being light and thin and being convenient for ventilation, and being capable of automatically absorbing fluid, so that the risk of SAP particles in the traditional sanitary towel product is avoided.
However, most of the existing liquid sanitary towel products have side leakage, easy rewet and other problems, the absorption effect has a large defect, the absorbed liquid cannot be efficiently transferred, the effects of quick absorption and lasting dryness are difficult to realize, and the use requirements of markets and users cannot be met.
In view of the foregoing, there is a need to develop a new technical solution to solve the problems existing in the prior art and meet the development requirements of the current market.
Disclosure of Invention
The term "HIPE emulsion" as used herein refers to high internal phase emulsions.
Based on the method, the acrylate monomer, the cross-linking agent, the initiator and the specific surfactant are mixed to obtain the absorption core with stronger absorption performance after reaction, and meanwhile, the upper layer and the lower layer of the absorption core have different pore sizes, so that the product can generate good capillary action, the liquid transfer capacity is further improved, the product has the effects of high-efficiency absorption and lasting dryness, the defects in the prior art are overcome, and the method has good application prospect.
An object of the present invention is to provide a method for preparing an absorbent core for a liquid sanitary napkin, comprising the steps of:
s1, mixing an acrylic ester monomer 1, a cross-linking agent, a photoinitiator and a surfactant to obtain an oil phase 1, and then adding a water phase A comprising inorganic salt and a water phase B comprising the initiator and acrylic acid salt and/or acrylic sulfonate and derivatives thereof to obtain HIPE emulsion 1;
s2, mixing an acrylic ester monomer 2, a cross-linking agent, a photoinitiator and a surfactant to obtain an oil phase 2, and then adding a water phase C comprising inorganic salt and a water phase D comprising the initiator, acrylic acid salt and/or acrylic sulfonate and derivatives thereof to obtain HIPE emulsion 2;
s3, respectively coating the HIPE emulsion 1 and the HIPE emulsion 2 on the upper surface and the lower surface of cloth, and dehydrating and drying after the treatments of illumination and steam to obtain the liquid sanitary towel absorption core;
wherein,,
the surfactant is obtained by reacting acrylic amino alkyl ester and/or acrylic amino alkyl ester derivative with haloalkane and/or haloalkane derivative;
the inorganic salt is selected from one or more of alkaline earth metal chloride or sulfate and alkali metal chloride or sulfate;
the cloth is selected from one of woven cloth or non-woven cloth.
Specifically, the acrylic aminoalkyl esters of the present invention generally refer to acrylic aminoalkyl esters having two alkyl segments attached, including, but not limited to, dimethylaminoalkyl (meth) acrylate, diethylaminoalkyl (meth) acrylate, dipropylaminoalkyl (meth) acrylate, dibutylaminoalkyl (meth) acrylate, and the like.
Further, in the acrylic amino alkyl ester and/or acrylic amino alkyl ester derivative, the alkyl in the alkyl ester is selected from C1-C20 alkyl; the amino group is-N (R) 1 )(R 2 ) The R is 1 And R is 2 Independently selected from a hydrogen atom or a C1-C20 alkyl group;
in the amino alkyl acrylate derivative,
one or more hydrogen atoms on the acrylic group are substituted with one or more of a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, or a C1-C20 alkyl group;
and/or the number of the groups of groups,
one or more carbon atoms in the alkyl group are replaced by one or more of polyethylene glycol, polypropylene glycol and polytetramethylene glycol chain segments;
and/or the number of the groups of groups,
the c=c double bond on the acrylic group can be reduced, oxidized or added to a different group.
Further, the preparation method of the surfactant comprises the following steps:
adding acrylic amino alkyl ester and/or acrylic amino alkyl ester derivative, alkyl halide and/or alkyl halide derivative and polymerization inhibitor into solvent, heating and stirring at 40-60 ℃ for reacting for 20-30h, and purifying to obtain the surfactant.
The surfactant prepared by the invention can form micelle in solution, greatly reduces surface tension, has good emulsifying capacity, and promotes each component in emulsion to be dispersed in a system more uniformly and stably. Surprisingly, it was found that the surfactant does not affect the crosslinked structure as an impurity in the polymerization reaction, and has a better effect than the conventional surfactant, and since the component contains an acrylic acid structure, it can participate in the polymerization reaction, and by adjusting the content of each component, it can achieve the technical effect of adjusting the pore size of the absorbent core after reacting with acrylic acid salt, acrylic acid monomer having a long chain structure, and the crosslinking agent. The upper layer in the absorption core body is large holes, the lower layer is small holes, and capillary action is realized, so that liquid can be quickly permeated into the lower layer, blood can be quickly and evenly dispersed and stored in the bottom layer, the situation that the blood is not accumulated on the surface layer of the sanitary towel can be ensured, and the problem of side leakage can be effectively solved.
Further, in the haloalkane and/or haloalkane derivative, a halogen atom is selected from one of a fluorine atom, a chlorine atom, a bromine atom and an iodine atom; the carbon number of the alkyl group is selected from 14 to 25;
in the halogenated alkyl derivative, one or more carbon atoms on the alkyl are substituted by one or more of hydrogen atoms, oxygen atoms, alkenyl groups, alkynyl groups, aryl groups, hydroxyl groups, amino groups, carbonyl groups, carboxyl groups, ester groups, cyano groups and nitro groups;
and/or the number of the groups of groups,
in the haloalkane derivative, one or more hydrogen atoms on an alkyl group are replaced by one or more of fluorine atoms, chlorine atoms, bromine atoms and iodine atoms;
and/or the number of the groups of groups,
in the halogenated alkyl derivative, a halogen atom is substituted by one or more of a sulfonate group and a methylsulfonic acid group.
Further, the method comprises the steps of,
in the step S1, the mass ratio of the acrylic ester monomer 1 to the cross-linking agent to the photoinitiator to the surfactant is (40-100): 5-40): 0.05-2): 2-10; in the water phase A, the mass fraction of inorganic salt is 1-4%; in the water phase B, the mass fraction of the initiator is 0.1-10%, and the mass fraction of the acrylate and/or the acrylate sulfonate and the derivative thereof is 0.1-5%; the volume ratio of the oil phase 1 to the water phase A to the water phase B is 1 (20-40): 1-10;
in the step S2, the mass ratio of the acrylic ester monomer 2 to the cross-linking agent to the photoinitiator to the surfactant is (40-100): 5-40): 0.05-2): 2-10; in the water phase C, the mass fraction of the inorganic salt is 1-4%; in the water phase D, the mass fraction of the initiator is 0.1-10%, and the mass fraction of the acrylate and/or the acrylate sulfonate and the derivative thereof is 0.1-5%; the volume ratio of the oil phase 2 to the water phase C to the water phase D is 1 (28-40): 1-10.
Further, the HIPE emulsion 1 and HIPE emulsion 2 were prepared using a continuous emulsification apparatus.
Further, the acrylic acid ester monomer 1 and the acrylic acid ester monomer 2 are acrylic acid alkyl ester or methacrylic acid alkyl ester, and the alkyl in the acrylic acid alkyl ester or the methacrylic acid alkyl ester is selected from C4-C20 alkyl.
Further, the cross-linking agent is selected from one or more of ethylene glycol diacrylate, ethylene glycol dimethacrylate, butylene glycol diacrylate, hexylene glycol dimethacrylate, trimethylol triacrylate, tripropylene glycol diacrylate, trimethylol trimethacrylate and tripropylene glycol dimethacrylate.
Further, in step S3, the light has a wavelength of 205-450nm and an intensity of 40-1000mW/cm 2 The time is 5-180s.
Further, the initiator is selected from one or more of ammonium persulfate, sodium persulfate, potassium persulfate and azo initiator.
Further, the photoinitiator is preferably one or more of benzophenone, benzil, thioxanthone, benzyl ketal, α -hydroxyalkyl benzophenone, α -aminoalkylbenzophenone, and acylphosphine oxide.
Further, the acrylic acid salt and/or the acrylic sulfonate comprises sodium acrylate, sodium methacrylate sulfonate and sodium acrylate sulfonate, and the mass parts of the sodium acrylate, the sodium methacrylate sulfonate and the sodium acrylate sulfonate are 0.1-50 parts.
The invention has the beneficial effects that:
1. according to the invention, a specific surfactant is compounded with a long-chain acrylic ester monomer and a cross-linking agent, and an absorption core body with stronger adsorption performance is prepared according to a HIPE synthesis process and method, so that the product has higher porosity and a compact micropore structure, a 3D three-dimensional fluid storage function is realized, the surface of the sanitary towel can be kept dry and comfortable, the service time of the sanitary towel is prolonged, and the problems of pressure blood rewet and side leakage of the traditional core body material are solved.
2. According to the invention, the hole sizes of the materials of each layer of the core body are optimally designed according to the fluid characteristics of human blood, so that the upper layer of the absorption core body is a large-aperture absorption layer with the diameter of 30-60 mu m, the absorption core body is suitable for quickly absorbing fluid, and the liquid can be quickly permeated to the lower layer; the lower layer is a small-aperture absorbing foam layer with the diameter of 1-15 mu m, is suitable for dispersing and storing aqueous fluid, can rapidly and evenly disperse the fluid on the bottom layer, and meanwhile, according to the capillary action principle, the size of the hole of the lower layer is obviously smaller than that of the hole of the upper layer, so that the small hole of the lower layer of the core body can more efficiently transfer and absorb the upper layer fluid, and the upper layer can be kept dry.
Drawings
Fig. 1 is an SEM image of the upper and lower layers of the absorbent core of the liquid sanitary napkin prepared in example 1 of the present invention.
Detailed Description
In order to more clearly illustrate the technical solution of the present invention, the following examples are set forth. The starting materials, reactions and workup procedures used in the examples are those commonly practiced in the market and known to those skilled in the art unless otherwise indicated.
The initiator in the embodiment of the invention is ammonium persulfate.
The photoinitiator in the present example was 1-hydroxycyclohexyl phenyl ketone (photoinitiator 184).
In the embodiment of the invention, "parts" refer to parts by weight.
Example 1
A method for preparing an absorbent core of a liquid sanitary napkin, comprising the steps of:
s0. adding dimethylaminoethyl methacrylate, 1-chlorodocosane (dimethylaminoethyl methacrylate: 1-chlorodocosane=1:1, n/n) and trace polymerization inhibitor (phenothiazine) into acetone, stirring at 50deg.C for reacting for 20h, centrifuging, washing, and drying to obtain surfactant;
s1, mixing 55 parts of eicosanoate, 20 parts of ethylene glycol dimethacrylate, 1 part of a photoinitiator and 5 parts of the surfactant to obtain an oil phase 1, and then adding a water phase A containing 2% of calcium chloride by mass and a water phase B containing 7% of an initiator by mass, 0.5% of sodium acrylate, 0.5% of sodium methacrylate sulfonate and 0.5% of sodium acrylate, wherein the volume ratio of the oil phase 1 to the water phase A to the water phase B is 1:26:1 to obtain HIPE emulsion 1;
specifically, in the continuous emulsifying device, an oil phase is prepared in an oil phase material storage tank, an inorganic salt water phase is prepared in an aqueous phase material storage tank, an initiator aqueous phase is prepared in an initiator storage tank, when the emulsifying device stably operates, the emulsion part of primary mixing emulsification in a first static mixer module is controlled by a first backflow constant flow pump to be conveyed back to a first emulsifying kettle, and the emulsion part of secondary mixing emulsification in a second static mixer module is controlled by a second backflow constant flow pump to be conveyed back to a second emulsifying kettle; the flow of the reflux is precisely controlled by a first reflux constant flow pump, and meanwhile, the oil phase in an oil phase material storage tank and the water phase in a water phase material storage tank are respectively and continuously conveyed into a first emulsifying kettle through an oil phase feeding constant flow pump and a water phase feeding constant flow pump to be premixed with the emulsion in the kettle which is being mixed and emulsified to obtain a premixed material, and the premixed material is conveyed into a first static mixer module to be mixed and emulsified to obtain a premixed emulsion I with the water-oil ratio of 14:1;
the first premixed emulsion is respectively partially conveyed into a first emulsifying kettle through a first backflow constant flow pump and is conveyed into a second emulsifying kettle through a first premixed emulsion feeding constant flow pump and a control, the first premixed emulsion in the first premixed emulsion feeding constant flow pump and the water phase continuously conveyed into the second emulsifying kettle through the water phase feeding constant flow pump are premixed and combined to obtain a premixed material, and the premixed material is conveyed into a second static mixer module to be mixed and emulsified to obtain a second premixed emulsion; the premixed emulsion II is respectively and partially conveyed into a second emulsifying kettle through a second reflux constant flow pump control, is conveyed to a third static mixer module through a constant flow pump and control, and is finally mixed and emulsified with an initiator water phase which is continuously conveyed through an initiator feeding constant flow pump control, and HIPE emulsion 1 is obtained after mixed and emulsified, and is continuously conveyed to the next procedure through an emulsified product output interface;
s2, mixing 40 parts of isooctyl acrylate, 10 parts of ethylene glycol dimethacrylate, 1 part of a photoinitiator and 2 parts of the surfactant to obtain an oil phase 2, and then adding a water phase C containing 1% of calcium chloride by mass and a water phase D containing 8% of an initiator by mass, 0.5% of sodium acrylate, 0.5% of sodium methacrylate sulfonate and 0.5% of sodium acrylate sulfonate, wherein the volume ratio of the oil phase 2 to the water phase C to the water phase D is 1:31:1 to obtain HIPE emulsion 2;
the HIPE emulsion 2 was treated in a continuous emulsification apparatus as described in S1;
s3, coating the HIPE emulsion 1 on the lower surface of a non-woven fabric, wherein the thickness is 1.5mm; coating the HIPE emulsion 2 on the upper surface of a non-woven fabric, wherein the thickness is 0.5mm; then the wavelength of 450nm and the intensity of 50mW/cm are adopted 2 And (3) placing the liquid sanitary towel into a steam tunnel furnace for curing for 5min, and dehydrating, drying and cutting to obtain the liquid sanitary towel absorption core.
Fig. 1 is an SEM image of the upper and lower layers of the absorbent core of the liquid sanitary napkin prepared in example 1.
Example 2
A method for preparing an absorbent core of a liquid sanitary napkin, comprising the steps of:
s0. adding dimethylaminoethyl methacrylate, 1-chloroeicosane (dimethylaminoethyl methacrylate: 1-chloroeicosane=1:1, n/n) and a trace amount of polymerization inhibitor (phenothiazine) into acetone, stirring at 45 ℃ for reaction for 20h, centrifuging, washing and drying to obtain a surfactant;
s1, mixing 60 parts of stearyl acrylate, 25 parts of ethylene glycol dimethacrylate, 1 part of a photoinitiator and 8 parts of a surfactant to obtain an oil phase 1, and then adding a water phase A containing 2 mass percent of calcium chloride and a water phase B containing 7 mass percent of an initiator, 0.5 mass percent of sodium acrylate, 0.5 mass percent of sodium methacrylate sulfonate and 0.5 mass percent of sodium acrylate sulfonate, wherein the volume ratio of the oil phase 1 to the water phase A to the water phase B is 1:30:1 to obtain HIPE emulsion 1;
specifically, in the continuous emulsifying device, an oil phase is prepared in an oil phase material storage tank, an inorganic salt water phase is prepared in an aqueous phase material storage tank, an initiator aqueous phase is prepared in an initiator storage tank, when the emulsifying device stably operates, the emulsion part of primary mixing emulsification in a first static mixer module is controlled by a first backflow constant flow pump to be conveyed back to a first emulsifying kettle, and the emulsion part of secondary mixing emulsification in a second static mixer module is controlled by a second backflow constant flow pump to be conveyed back to a second emulsifying kettle; the flow of the reflux is precisely controlled by a first reflux constant flow pump, and meanwhile, the oil phase in an oil phase material storage tank and the water phase in a water phase material storage tank are respectively and continuously conveyed into a first emulsifying kettle through an oil phase feeding constant flow pump and a water phase feeding constant flow pump to be premixed with the emulsion in the kettle which is being mixed and emulsified to obtain a premixed material, and the premixed material is conveyed into a first static mixer module to be mixed and emulsified to obtain a premixed emulsion I with the water-oil ratio of 14:1;
the first premixed emulsion is respectively partially conveyed into a first emulsifying kettle through a first backflow constant flow pump and is conveyed into a second emulsifying kettle through a first premixed emulsion feeding constant flow pump and a control, the first premixed emulsion in the first premixed emulsion feeding constant flow pump and the water phase continuously conveyed into the second emulsifying kettle through the water phase feeding constant flow pump are premixed and combined to obtain a premixed material, and the premixed material is conveyed into a second static mixer module to be mixed and emulsified to obtain a second premixed emulsion; the premixed emulsion II is respectively and partially conveyed into a second emulsifying kettle through a second reflux constant flow pump control, is conveyed to a third static mixer module through a constant flow pump and control, and is finally mixed and emulsified with an initiator water phase which is continuously conveyed through an initiator feeding constant flow pump control, and HIPE emulsion 1 is obtained after mixed and emulsified, and is continuously conveyed to the next procedure through an emulsified product output interface;
s2, mixing 50 parts of isooctyl methacrylate, 20 parts of ethylene glycol dimethacrylate, 1 part of a photoinitiator and 5 parts of the surfactant to obtain an oil phase 2, and then adding a water phase C containing 1% of calcium chloride by mass and a water phase D containing 6% of an initiator by mass, 0.5% of sodium acrylate, 0.5% of sodium methacrylate sulfonate and 0.5% of sodium acrylate sulfonate, wherein the volume ratio of the oil phase 2 to the water phase C to the water phase D is 1:28:1 to obtain HIPE emulsion 2;
the HIPE emulsion 2 was treated in a continuous emulsification apparatus as described in S1;
s3, coating the HIPE emulsion 1 on the lower surface of a non-woven fabric, wherein the thickness is 1.5mm; coating the HIPE emulsion 2 on the upper surface of a non-woven fabric, wherein the thickness is 0.5mm; then the wavelength of 350nm and the intensity of 40mW/cm are adopted 2 And (3) placing the liquid sanitary towel into a steam tunnel furnace for curing for 5min, and dehydrating, drying and cutting to obtain the liquid sanitary towel absorption core.
Example 3
A method for preparing an absorbent core of a liquid sanitary napkin, comprising the steps of:
s0. adding dimethylaminoethyl methacrylate, 1-chlorodocosane (dimethylaminoethyl methacrylate: 1-chlorodocosane=1:1, n/n) and trace polymerization inhibitor (phenothiazine) into acetone, stirring at 40deg.C for reacting for 25h, centrifuging, washing, and drying to obtain surfactant;
s1, mixing 80 parts of eicosanoate, 40 parts of ethylene glycol dimethacrylate, 1 part of a photoinitiator and 8 parts of a surfactant to obtain an oil phase 1, and then adding a water phase A containing 3% of calcium chloride by mass and a water phase B containing 10% of an initiator by mass, 0.4% of sodium acrylate, 0.4% of sodium methacrylate, 0.1% of sodium methacrylate sulfonate and 0.1% of sodium acrylate, wherein the volume ratio of the oil phase 1 to the water phase A to the water phase B is 1:20:1 to obtain HIPE emulsion 1;
specifically, in the continuous emulsifying device, an oil phase is prepared in an oil phase material storage tank, an inorganic salt water phase is prepared in an aqueous phase material storage tank, an initiator aqueous phase is prepared in an initiator storage tank, when the emulsifying device stably operates, the emulsion part of primary mixing emulsification in a first static mixer module is controlled by a first backflow constant flow pump to be conveyed back to a first emulsifying kettle, and the emulsion part of secondary mixing emulsification in a second static mixer module is controlled by a second backflow constant flow pump to be conveyed back to a second emulsifying kettle; the flow of the reflux is precisely controlled by a first reflux constant flow pump, and meanwhile, the oil phase in an oil phase material storage tank and the water phase in a water phase material storage tank are respectively and continuously conveyed into a first emulsifying kettle through an oil phase feeding constant flow pump and a water phase feeding constant flow pump to be premixed with the emulsion in the kettle which is being mixed and emulsified to obtain a premixed material, and the premixed material is conveyed into a first static mixer module to be mixed and emulsified to obtain a premixed emulsion I with the water-oil ratio of 14:1;
the first premixed emulsion is respectively partially conveyed into a first emulsifying kettle through a first backflow constant flow pump and is conveyed into a second emulsifying kettle through a first premixed emulsion feeding constant flow pump and a control, the first premixed emulsion in the first premixed emulsion feeding constant flow pump and the water phase continuously conveyed into the second emulsifying kettle through the water phase feeding constant flow pump are premixed and combined to obtain a premixed material, and the premixed material is conveyed into a second static mixer module to be mixed and emulsified to obtain a second premixed emulsion; the premixed emulsion II is respectively and partially conveyed into a second emulsifying kettle through a second reflux constant flow pump control, is conveyed to a third static mixer module through a constant flow pump and control, and is finally mixed and emulsified with an initiator water phase which is continuously conveyed through an initiator feeding constant flow pump control, and HIPE emulsion 1 is obtained after mixed and emulsified, and is continuously conveyed to the next procedure through an emulsified product output interface;
s2, mixing 60 parts of isooctyl methacrylate, 20 parts of ethylene glycol dimethacrylate, 1 part of a photoinitiator and 2 parts of the surfactant to obtain an oil phase 2, and then adding a water phase C containing 2 mass percent of calcium chloride and a water phase D containing 5 mass percent of the initiator, 0.5 mass percent of sodium acrylate, 0.5 mass percent of sodium methacrylate sulfonate and 0.5 mass percent of sodium acrylate, wherein the volume ratio of the oil phase 2 to the water phase C to the water phase D is 1:40:1 to obtain HIPE emulsion 2;
the HIPE emulsion 2 was treated in a continuous emulsification apparatus as described in S1;
s3, coating the HIPE emulsion 1 on the lower surface of a non-woven fabric, wherein the thickness is 1.5mm; the HI is processedThe PE emulsion 2 is coated on the upper surface of the non-woven fabric, and the thickness is 0.5mm; then the wavelength of 205nm and the intensity of 1000mW/cm are adopted 2 And (3) placing the liquid sanitary towel into a steam tunnel furnace for curing for 5min, and dehydrating, drying and cutting to obtain the liquid sanitary towel absorption core.
Comparative example 1
A method for preparing an absorbent core of a liquid sanitary napkin, the comparative example differs from example 1 in that: in steps S1, S2, the surfactant was replaced with conventional emulsifier propyldimethyl ammonium bromide, and other materials and preparation methods were the same as in example 1.
Comparative example 2
A method for preparing an absorbent core of a liquid sanitary napkin, the comparative example differs from example 1 in that: the 1-chlorobehene in step S0 was replaced with n-butyl chloride, and the eicosane methacrylate in step S1 was replaced with isooctyl methacrylate, and the other materials and preparation methods were the same as in example 1.
Test case
Performance comparison tests were performed on example 1 and comparative examples 1-2.
The testing method comprises the following steps: GB/T14207-2008 was used for water absorption and blood absorption tests.
The test results are shown in Table 1.
TABLE 1 absorption test results
As can be seen from table 1, the specific surfactant and the acrylate monomer are compounded to generate a good synergistic effect in the embodiment 1 of the invention, and the prepared liquid sanitary towel absorbent core has excellent liquid absorption capacity, and the penetration time, rewet amount, water absorption amount and absorption speed are obviously superior to those of the comparative example. In comparative examples 1-2, however, the surfactant was deleted or replaced with a short-chain structure, which resulted in the reaction, and the absorbent core was difficult to form a more three-dimensional, dense microporous structure, and the absorbent capacity of the core was significantly reduced, and no ideal capillary action could be produced, so that the liquid conductivity in the product was poor, and the absorption efficiency was low.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (4)
1. A method for preparing an absorbent core of a liquid sanitary napkin, comprising the steps of:
s1, mixing an acrylic ester monomer 1, a cross-linking agent, a photoinitiator and a surfactant to obtain an oil phase 1, and then adding a water phase A comprising inorganic salt and a water phase B comprising the initiator and acrylic acid salt and/or acrylic sulfonate and derivatives thereof to obtain HIPE emulsion 1;
s2, mixing an acrylic ester monomer 2, a cross-linking agent, a photoinitiator and a surfactant to obtain an oil phase 2, and then adding a water phase C comprising inorganic salt and a water phase D comprising the initiator, acrylic acid salt and/or acrylic sulfonate and derivatives thereof to obtain HIPE emulsion 2;
s3, respectively coating the HIPE emulsion 1 and the HIPE emulsion 2 on the upper surface and the lower surface of cloth, and dehydrating and drying after the treatments of illumination and steam to obtain the liquid sanitary towel absorption core;
wherein,,
the surfactant is obtained by reacting acrylic amino alkyl ester and/or acrylic amino alkyl ester derivative with haloalkane and/or haloalkane derivative;
the inorganic salt is selected from one or more of alkaline earth metal chloride or sulfate and alkali metal chloride or sulfate;
the cloth is selected from one of woven cloth or non-woven cloth;
the acrylic ester monomer 1 is selected from alkyl acrylate or alkyl methacrylate, and the alkyl in the alkyl acrylate or alkyl methacrylate is selected from C18-C20 alkyl;
the acrylic ester monomer 2 is selected from isooctyl acrylate or isooctyl methacrylate;
the preparation method of the surfactant comprises the following steps:
adding acrylic amino alkyl ester and/or acrylic amino alkyl ester derivative, alkyl halide and/or alkyl halide derivative and polymerization inhibitor into solvent, heating and stirring at 40-60 ℃ for reaction, and purifying to obtain the surfactant;
in the haloalkane and/or haloalkane derivative, halogen atoms are selected from one of fluorine atoms, chlorine atoms, bromine atoms and iodine atoms; the carbon number of the alkyl is selected from 20-22;
in the step S1, the mass ratio of the acrylic ester monomer 1 to the cross-linking agent to the photoinitiator to the surfactant is (40-100): 5-40): 0.05-2): 2-10; in the water phase A, the mass fraction of inorganic salt is 1-4%; in the water phase B, the mass fraction of the initiator is 0.1-10%, and the mass fraction of the acrylate and/or the acrylate sulfonate and the derivative thereof is 0.1-5%; the volume ratio of the oil phase 1 to the water phase A to the water phase B is 1 (20-40): 1-10;
in the step S2, the mass ratio of the acrylic ester monomer 2 to the cross-linking agent to the photoinitiator to the surfactant is (40-100): 5-40): 0.05-2): 2-10; in the water phase C, the mass fraction of the inorganic salt is 1-4%; in the water phase D, the mass fraction of the initiator is 0.1-10%, and the mass fraction of the acrylate and/or the acrylate sulfonate and the derivative thereof is 0.1-5%; the volume ratio of the oil phase 2 to the water phase C to the water phase D is 1 (28-40): 1-10;
in step S3, the light has a wavelength of 205-450nm and an intensity of 40-1000mW/cm 2 The time is 5-180 and s.
2. A method of preparing a liquid sanitary napkin absorbent core according to claim 1, wherein the alkyl groups in the alkyl esters are selected from C1-C20 alkyl groups in the aminoalkyl acrylate and/or aminoalkyl acrylate derivatives; the amino group is-N (R) 1 )(R 2 ) The R is 1 And R is 2 Independently selected from a hydrogen atom or a C1-C20 alkyl group;
in the amino alkyl acrylate derivative,
one or more hydrogen atoms on the acrylic group are substituted with one or more of a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, or a C1-C20 alkyl group;
and/or the number of the groups of groups,
one or more carbon atoms in the alkyl group are replaced by one or more of polyethylene glycol, polypropylene glycol and polytetramethylene glycol chain segments;
and/or the number of the groups of groups,
the c=c double bond on the acrylic group can be reduced, oxidized or added to a different group.
3. The method of making a liquid sanitary napkin absorbent core according to claim 1 wherein said HIPE emulsion 1 and HIPE emulsion 2 are made using a continuous emulsifying apparatus.
4. The method of preparing a liquid sanitary napkin absorbent core according to claim 1, wherein the cross-linking agent is selected from one or more of ethylene glycol diacrylate, ethylene glycol dimethacrylate, butylene glycol diacrylate, hexylene glycol dimethacrylate, trimethylol triacrylate, tripropylene glycol diacrylate, trimethylol trimethacrylate, tripropylene glycol dimethacrylate.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1140458A (en) * | 1994-12-08 | 1997-01-15 | 株式会社日本触媒 | Water-absorbent resin, process for production thereof, and water-absorbent resin composition |
| CN108084330A (en) * | 2017-12-27 | 2018-05-29 | 佛山市飞吸高分子材料科技有限公司 | A kind of esters of acrylic acid porous polymer and preparation method thereof |
| CN113289049A (en) * | 2021-05-28 | 2021-08-24 | 广州安洁芯材科技有限公司 | Preparation method of acrylic foam material absorption core |
| CN114410045A (en) * | 2022-03-09 | 2022-04-29 | 万华化学集团股份有限公司 | Method for preparing bacteriostatic foam absorbing material from HIPPE, foam absorbing material and application thereof |
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| CN1140458A (en) * | 1994-12-08 | 1997-01-15 | 株式会社日本触媒 | Water-absorbent resin, process for production thereof, and water-absorbent resin composition |
| CN108084330A (en) * | 2017-12-27 | 2018-05-29 | 佛山市飞吸高分子材料科技有限公司 | A kind of esters of acrylic acid porous polymer and preparation method thereof |
| CN113289049A (en) * | 2021-05-28 | 2021-08-24 | 广州安洁芯材科技有限公司 | Preparation method of acrylic foam material absorption core |
| CN114410045A (en) * | 2022-03-09 | 2022-04-29 | 万华化学集团股份有限公司 | Method for preparing bacteriostatic foam absorbing material from HIPPE, foam absorbing material and application thereof |
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