CN106821601A - A kind of ultra-thin sanitary napkin - Google Patents
A kind of ultra-thin sanitary napkin Download PDFInfo
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- CN106821601A CN106821601A CN201611182831.0A CN201611182831A CN106821601A CN 106821601 A CN106821601 A CN 106821601A CN 201611182831 A CN201611182831 A CN 201611182831A CN 106821601 A CN106821601 A CN 106821601A
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- hydroscopicity
- complex
- sanitary napkin
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- 239000002245 particle Substances 0.000 claims abstract description 28
- 239000000835 fiber Substances 0.000 claims abstract description 24
- 229920000642 polymer Polymers 0.000 claims abstract description 23
- 239000012530 fluid Substances 0.000 claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 21
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 19
- 239000004744 fabric Substances 0.000 claims abstract description 14
- 229920000247 superabsorbent polymer Polymers 0.000 claims abstract description 13
- 238000005507 spraying Methods 0.000 claims abstract description 11
- 230000007547 defect Effects 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 claims abstract description 7
- 238000011065 in-situ storage Methods 0.000 claims abstract description 5
- 239000003054 catalyst Substances 0.000 claims abstract description 3
- 238000004519 manufacturing process Methods 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims description 17
- 238000004132 cross linking Methods 0.000 claims description 16
- 239000000178 monomer Substances 0.000 claims description 14
- 238000002360 preparation method Methods 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 239000003595 mist Substances 0.000 claims description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 5
- 239000003999 initiator Substances 0.000 claims description 5
- 239000003431 cross linking reagent Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000006386 neutralization reaction Methods 0.000 claims description 3
- 238000001020 plasma etching Methods 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 230000003197 catalytic effect Effects 0.000 claims description 2
- ARGZBGBUZXUAHM-UHFFFAOYSA-L potassium sodium hydrogen sulfite sulfooxy sulfate Chemical compound [Na+].[K+].OS([O-])=O.OS(=O)(=O)OOS([O-])(=O)=O ARGZBGBUZXUAHM-UHFFFAOYSA-L 0.000 claims description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims 3
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims 1
- 229910052939 potassium sulfate Inorganic materials 0.000 claims 1
- 235000011151 potassium sulphates Nutrition 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 26
- 239000002250 absorbent Substances 0.000 description 17
- 239000011347 resin Substances 0.000 description 16
- 229920005989 resin Polymers 0.000 description 16
- 230000002745 absorbent Effects 0.000 description 15
- 239000004677 Nylon Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 239000004745 nonwoven fabric Substances 0.000 description 8
- 229920001778 nylon Polymers 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000003786 synthesis reaction Methods 0.000 description 6
- 230000002194 synthesizing effect Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 3
- 239000003125 aqueous solvent Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000036632 reaction speed Effects 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 208000005156 Dehydration Diseases 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000003556 assay Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 239000002504 physiological saline solution Substances 0.000 description 2
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 2
- 150000003254 radicals Chemical class 0.000 description 2
- 239000007921 spray Substances 0.000 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 description 1
- -1 N, N`- methylene bisacrylamide acyl Amine Chemical class 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004033 diameter control Methods 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 210000004914 menses Anatomy 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 description 1
- 125000000962 organic group Chemical group 0.000 description 1
- 235000019394 potassium persulphate Nutrition 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000000935 solvent evaporation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000012085 test solution Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000004804 winding 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
- A61F13/45—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 shape
- A61F13/47—Sanitary towels, incontinence pads or napkins
- A61F13/472—Sanitary towels, incontinence pads or napkins specially adapted for female use
-
- 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
- A61F13/15577—Apparatus or processes for manufacturing
- A61F13/15699—Forming webs by bringing together several webs, e.g. by laminating or folding several webs, with or without additional treatment of the webs
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Epidemiology (AREA)
- Vascular Medicine (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Manufacturing & Machinery (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Abstract
The invention discloses a kind of ultra-thin sanitary napkin, the sanitary napkin is using high-hydroscopicity complex as absorptive core.The high-hydroscopicity complex is obtained as follows：Plasma etch processes first are carried out with manufacturing defect active catalyst sites to ES fibers hot-wind nonwoven cloth, high-hydroscopicity polymer fluid is attached on ES fibers through ullrasonic spraying mode again, realizes being cross-linked to form Super Absorbent Polymer Particles so as to prepare high-hydroscopicity complex in hot-wind nonwoven cloth fiber surface in-situ polymerization finally by microwave reaction mode of heating.
Description
Technical field
The present invention relates to a kind of ultra-thin sanitary napkin, the sanitary napkin is using high-hydroscopicity complex as absorptive core.Height is inhaled
Aqueous complex is that in-situ polymerization is crosslinked synthesizing high-hydroscopicity resin on ES fabric nonwoven cloths using high-hydroscopicity polymer fluid
Grain.
Background technology
With the continuous improvement of living standard, the requirement more and more higher of comfortableness, security to sanitary napkin, so that high
The demand of sanitary napkin is held to dramatically increase.Current sanitary napkin uses Time of Fluff Slurry and Super Absorbent Polymer Particles mostly（SAP）Mixing is made
It is the absorptive core of sanitary napkin.Because the presence of Time of Fluff Slurry causes that sanitary napkin is thicker, the comfortableness of influence women dress.Therefore,
It is necessary a kind of high-hydroscopicity complex that Super Absorbent Polymer Particles can be securely fixed on base material of exploitation, so as to subtract
Few sanitary napkin absorptive core thickness.
The Patents report of high-hydroscopicity complex is had at present, is mostly to use for polymer solution to be applied over base material
On, the synthesizing high-hydroscopicity resin on base material is then realized using Hot-blast Heating or ultraviolet irradiation mode.This synthesis condition class
Like the synthesis condition of Super Absorbent Polymer Particles, but Super Absorbent Polymer Particles typically take agitating mode in building-up process
Make reaction more uniform, break process is carried out to super absorbent resin after completion of the reaction and obtain particle size it is controllable
Grain.However, the more difficult control of the reaction condition of synthesizing high-hydroscopicity resin on base material, often lead to that monomer residue is high, particle is big
Small and skewness, so as to influence the flexibility and water absorbing properties of high-hydroscopicity complex.
The content of the invention
In order to overcome drawbacks described above, it is an object of the invention to provide one kind using high-hydroscopicity complex as absorptive core
Ultra-thin sanitary napkin.High-hydroscopicity complex is former on for the base material of ES fiber hot-wind nonwoven cloths using high-hydroscopicity polymer fluid
Position polymerization crosslinking synthesizing high-hydroscopicity resin particle.
To achieve the above object, the present invention uses following technical scheme：
A kind of ultra-thin sanitary napkin, it is characterised in that use high-hydroscopicity complex as the absorptive core of sanitary napkin, absorptive core
Thickness≤1mm.
The preparation method of high-hydroscopicity complex, it utilizes high-hydroscopicity polymer fluid in situ on ES fiber hot-wind nonwoven cloths
Polymerization crosslinking synthesizing high-hydroscopicity resin particle, so as to prepare high-hydroscopicity complex, methods described it is characterized in that used
Base material be ES fiber hot-wind nonwoven cloths, square grammes per square metre be 15-50g/m2, and need plasma etching pretreatment to obtain defect activity
Catalytic site.
The preparation method of high-hydroscopicity complex, it is characterised in that high-hydroscopicity polymer fluid includes monomeric acrylic or propylene
The mixture of acid amides or both（Neutralized with NaOH, degree of neutralization is 70-75%）, crosslinking agent N, N`- methylene bisacrylamide acyl
Amine, initiator potassium persulfate or potassium peroxydisulfate-sodium hydrogensulfite.Polymer fluid monomer concentration is 40-70% (weight).
The preparation method of high-hydroscopicity complex, it is characterised in that the upper liquid mode of polymer fluid is ullrasonic spraying upper liquid, spray
Mist upper liquid can be ES fiber hot-wind nonwoven cloth one-sided sprayings, or the two-sided spraying of ES fiber hot-wind nonwoven cloths, and droplet is straight
Footpath is 0.2-0.8mm, preferably 0.4-0.6mm.
The preparation method of high-hydroscopicity complex, it is characterised in that polymerization crosslinking reaction condition is heated for microwave reaction, instead
It is 80-90 to answer temperatureoC, the microwave reaction time is 5-30s；Using air blast drying mode, temperature is 100-110oC, drying time
It is 30-150s.
The preparation method of high-hydroscopicity complex, it is characterised in that square grammes per square metre of high-hydroscopicity complex is 80-200g/
m2。
The beneficial effects of the present invention are：
1st, because high-hydroscopicity complex is free of Time of Fluff Slurry as absorptive core so that sanitary napkin absorptive core thickness≤1mm, warp
Blood is firmly locked in super absorbent resin, is difficult to return and is oozed, the guide functions and Super Absorbent Polymer Particles of hot-wind nonwoven cloth
Align guarantee menses can quickly be absorbed, reach wink inhale effect.
2nd, as the base material of high-hydroscopicity complex must be fulfilled for polymer fluid substrate surface can polymerization crosslinking, and need it is attached
A certain amount of Super Absorbent Polymer Particles.Though function of the viscose glue spunlace non-woven cloth with interim water storage, experiment finds, polymerization
Liquid in the above cannot polymerization crosslinking（Even if in the above also cannot polymerization crosslinking using heavy dose of initiator polymer fluid）, thus it is speculated that
It is probably, because viscose rayon contains the organic groups such as hydroxyl, there is quenching effect to initiator free radical, so as to lead to not
Trigger acrylic acid（Sodium）Carry out polymerization crosslinking.The characteristics of spun-bonded non-woven fabrics have yield high, low cost relative to hot-wind nonwoven cloth,
But spun-bonded non-woven fabrics surface is smooth（Fluffing is few）, specific surface area is small, and the superincumbent adhesion amount of super absorbent resin is low, influence water suction
Multiplying power, and be difficult to firmly fix, therefore spun-bonded non-woven fabrics are also not suitable for being used as the base material of high-hydroscopicity complex.ES is fine
Dimension hot-wind nonwoven cloth has the effect of water conservancy diversion, it is possible to increase the utilization rate and rate of liquid aspiration of super absorbent resin.Bulk hot blast
Non-woven fabrics makes super absorbent resin have many attachment sites, so as to improve square grammes per square metre of high-hydroscopicity complex.ES fibers
Square grammes per square metre of non-woven fabrics need to be controlled in 15-50g/m2Between, work as grammes per square metre<15 g/m2When, the pull-off force of non-woven fabrics<High-hydroscopicity
Complex expands produced stress after absorbing water, is easily caused absorptive core fracture；Work as grammes per square metre>50 g/m2When, due to nonwoven
Cloth inhales that water conservation multiplying power is low in itself, so as to influence the overall suction water conservation multiplying power of high-hydroscopicity complex, and increases cost.
3rd, conventional super absorbent resin synthesis is dynamically carried out in carrying agitating function reaction vessel at one, but high
Water-absorbent polymeric liquid carries out polymerization crosslinking in substrate surface static state, often leads to react insufficient, and monomer residue is high, it is therefore desirable to
Improve polymer fluid makes reaction more thorough in the reactivity of base material.Plasma etching is carried out to base material ES fibers hot-wind nonwoven cloth
Treatment can cause that fiber produces defect, and the suction-operated of this defect can reduce the work that free radical chain triggers, chain increases
Change energy, so that polymerization crosslinking reaction is more prone to carry out, reduce monomer residue.Simultaneously as on fiber fixed point etc. from
Son etching produces defect, and polymer fluid pinpoints polymerization crosslinking on fiber so that Super Absorbent Polymer Particles are pinpointed in fiber surface
Distribution so that high-hydroscopicity complex is more soft.Meanwhile, between rationally fixed point distribution can control Super Absorbent Polymer Particles
Porosity, so as to improve suction water conservation multiplying power, the rate of water absorption performance of Super Absorbent Polymer Particles.Because super absorbent resin is in base
In-situ polymerization crosslinking is pinpointed on material, therefore super absorbent resin adheres to more firmly, in the feelings as absorptive core on base material
Under condition, even if acutely shake, absorptive core will not also occur fault-layer-phenomenon.
4th, the polymer fluid of synthesizing super absorbent sex camplex is similar to the polymer fluid of routine SAP particles, but due to polymer fluid
It is limited in the upper liquid measure of non-woven fabrics, therefore polymer fluid monomer concentration need to be improved, control between 40-70% (weight), to improve height
The overall of water-absorbing composite inhales water conservation multiplying power.Easily make reaction not exclusively however, monomer concentration is too high, monomer residue is high.Largely
Experimental studies have found that, monomer concentration is between 40-70% (weight), it is possible to achieve complex water absorbent rate>30g/g, water conservation multiplying power
>15g/g, and monomer residue<600ppm.
5th, polymer fluid is put on ES hot-wind nonwoven cloth fibers using ullrasonic spraying mode, it is possible to achieve the suction high of synthesis
Water-base resin is in granular form state, and particle size is controllable, by mist particle diameter control between 0.4-0.6mm, it is possible to achieve synthesis
Particle size be 0.3-0.5mm, this is consistent with the SAP granules Particle Sizes being conventionally synthesized at present, can send out to greatest extent
Wave the performance of SAP.And transfer coated, dip-coating, the brushing upper liquid mode that other patents are used are easily in nonwoven surface formation liquid film
And causing synthesized SAP in film-form, specific surface area is small, and absorption rate is low, and is influenceed due to water swelling limited space
Inhale water conservation multiplying power.
6th, in organic synthesis, reaction speed will accelerate tens of or even thousands of times to microwave technique application than conventional method,
And the material that conventional method is difficult to generate can be synthesized.Polymer fluid mist particle diameter is small, and specific surface area is big, aqueous solvent evaporation rate
Hurry up, using conventional mode of heating, reaction speed is slower, in the case of polymerization crosslinking reaction is also incomplete, aqueous solvent is a large amount of
Volatilization, so as to cause reaction to be difficult to react completely, molecular weight is low, and monomer residue is more.Microwave reaction is directly heated to reaction molecular,
With reaction speed it is fast the characteristics of, while using defect avtive spot catalysis and 80-90oReaction temperature C higher is anti-to accelerate
The carrying out answered, and this temperature, less than the boiling point of water, the evaporation rate of water is still relatively slow, therefore, it is possible to ensure entirely be polymerized
Monomer concentration change is little in cross-linking reaction.Aqueous solvent is removed using air blast drying mode, temperature control is in 100-110oC it
Between, drying temperature higher can make water rapid evaporation, improve the yield in unit time of high-hydroscopicity complex, but polyvinyl
Material is higher than 120oC can soften, therefore by drying temperature control in 100-110oBetween C.
7th, square grammes per square metre of high-hydroscopicity complex is controlled in 80-200g/m2Between.Experiment finds, when a square grammes per square metre<
100g/m2When, Super Absorbent Polymer Particles adhesion amount is few, and suction water conservation multiplying power is low, and when square grammes per square metre>200g/m2When, water suction is held
Amount is too high, causes to waste and increase absorptive core thickness.
Specific embodiment
Below by way of specific embodiment, the present invention is described in detail, but design concept of the invention is not limited to
This.
High-hydroscopicity complex embodiment
1st, by 50g/m2ES fibers hot-wind nonwoven cloth plasma etch processes are carried out to produce defect active catalyst sites；
2nd, to polymer fluid（Acrylic acid is neutralized using NaOH, degree of neutralization is 75%, monomer concentration is 50% (weight), 0.05%
N, N`- methylene-bisacrylamide crosslinking agent, 0.2% potassium peroxydisulfate initiator）Ullrasonic spraying, makes its attachment on the fiber surface,
Mist particle diameter is 0.4-0.6mm, controls spray amount to reach square grammes per square metre of target call high-hydroscopicity complex；
3rd, using heating using microwave, reaction temperature is 85oC, reaction time 15s, react preparation and are attached to fiber by polymerization crosslinking
The high water absorbent resin gel on surface, dries through air blast, and drying temperature is 110 oC, drying time is 60s, and preparation is attached to fibre
The high hydroscopic resin particle in dimension table face；
4th, cutting, winding are made 110g/m after drying2High-hydroscopicity complex.
High-hydroscopicity complex comparative example 1
In comparative example 1, in addition to ES fiber hot-wind nonwoven cloths do not carry out plasma etch processes, remaining is identical with embodiment.
High-hydroscopicity complex comparative example 2
In comparative example 2, the mode of heating of polymerization crosslinking reaction is dried for air blast and heated, and remaining is identical with embodiment.
The performance comparison of the high-hydroscopicity complex prepared by the high-hydroscopicity complex embodiment of table 2 and comparative example
Sanitary napkin embodiment
Take the high-hydroscopicity complex of high-hydroscopicity complex embodiment 60mm breadth, core body length 245mm（Every sanitary napkin is high
Water-absorbent besin particles content 0.882g）, wrapped up with hydrophilic spun-bond nonwoven fabric, prepare L sanitary napkins.
Sanitary napkin comparative example
Mixed by assembly drum by every sanitary napkin 0.6g containing Time of Fluff Slurry and Super Absorbent Polymer Particles 3.4g, use health paper bag
Wrap up in, other process conditions are consistent with embodiment.
The performance comparison of the sanitary napkin prepared by the sanitary napkin embodiment of table 3 and comparative example
| Sample | Absorptive core thickness/mm | Sanitary napkin weight/g | Water absorbent rate/times | Infiltration capacity/g |
| Sanitary napkin embodiment | 0.6 | 7.9 | 19 | 5.1 |
| Sanitary napkin comparative example | 1.5 | 10.3 | 16 | 5.1 |
The water suction of high-hydroscopicity complex, water conservation multiplying power method of testing：
1st, the high-hydroscopicity complex of clip 5cm*5cm, accurately weighs its weight S, loads Nylon Bag；
2nd, Nylon Bag opening upwards are soaked in the container for filling 1500mL physiological saline (0.9%), by Nylon Bag after 60min
Take out, opening upwards vertically drip 10min naturally, weigh gross weight W1；
3rd, do not add the Nylon Bag of sample carries out blank assay as stated above, weighs Nylon Bag weight in wet base W2；
4th, the Nylon Bag equipped with high-hydroscopicity complex that will complete to absorb after multiple test is put into centrifugal dehydrator, with
After 1600rpm dehydrations 90s, weight W3 is weighed；
5th, blank assay is carried out to the Nylon Bag for not adding sample, weighs the weight W4 after Nylon Bag dehydration；
6th, water absorbent rate g/g=(W1-W2)/S, water conservation multiplying power g/g=(W3-W4)/S.
High-hydroscopicity complex monomer residue method of testing：
The accurate high-hydroscopicity complex for weighing 1.000g, is shredded, and is poured into beaker, and being subsequently adding 200mL concentration is
0.9% physiological saline, adds a cover after being put into revolution, uses magnetic stirrer 1h.Filtered with filter paper, using filtrate as test
Solution.Acrylic acid content is tested using high performance liquid chromatography.
Absorptive core thickness testing method：
With the thickness of digital indicator test absorbent core body under 0.625kPa pressure.
Water absorbent rate and infiltration weight testing method：
With reference to GB/T 8939-2008 sanitary napkins（Containing panty liner）Method of testing tested.
Although the present invention is explained and described to specific embodiment, to those skilled in the art
For, can in without departing substantially from the spirit and scope of the present invention in the case of make some changes, modification and modification, but above-mentioned change
Change, modification and modification are each fallen within protection scope of the present invention.
Claims (8)
1. a kind of ultra-thin sanitary napkin, using high-hydroscopicity complex as absorptive core, the high-hydroscopicity is combined the sanitary napkin
Body is obtained as follows：Plasma etch processes are first carried out to base material with manufacturing defect active catalyst sites, then will
High-hydroscopicity polymer fluid is attached on the fiber of base material through ullrasonic spraying mode, is realized finally by microwave reaction mode of heating
Substrate fiber in situ Polymerization is cross-linked to form Super Absorbent Polymer Particles so as to prepare high-hydroscopicity complex.
2. ultra-thin sanitary napkin according to claim 1, it is characterised in that using high-hydroscopicity complex as sanitary napkin
Absorptive core, core thickness≤1mm.
3. the preparation method of high-hydroscopicity complex according to claim 1, it is characterised in that base material used is ES fine
Dimension hot-wind nonwoven cloth, square grammes per square metre is 15-50g/m2, and need to carry out plasma etching pretreatment come obtain defect active catalytic position
Point.
4. the preparation method of high-hydroscopicity complex according to claim 1, it is characterised in that high-hydroscopicity polymer fluid bag
Include mixture, crosslinking agent N, the N`- methylene-bisacrylamide, initiator mistake of monomeric acrylic or acrylamide or both
Potassium sulfate or potassium peroxydisulfate-sodium hydrogensulfite, the wherein monomer concentration of polymer fluid are 40-70% weight, wherein monomeric acrylic
Or the mixture of acrylamide or both is neutralized using NaOH, degree of neutralization is 70-75%.
5. the preparation method of high-hydroscopicity complex according to claim 1, it is characterised in that the upper liquid mode of polymer fluid
It is ullrasonic spraying upper liquid, spraying upper liquid is ES fiber hot-wind nonwoven cloth one-sided sprayings or the two-sided spraying of ES fiber hot-wind nonwoven cloths,
Mist particle diameter is 0.2-0.8mm.
6. the preparation method of high-hydroscopicity complex according to claim 5, it is characterised in that mist particle diameter is 0.4-
0.6mm。
7. the preparation method of high-hydroscopicity complex according to claim 1, it is characterised in that polymerization crosslinking reaction condition
It is heating using microwave, reaction temperature is 80-90oC, the microwave reaction time is 5-30s, and drying temperature is 100-110oC, drying time
It is 30-150s.
8. the preparation method of high-hydroscopicity complex according to claim 1, it is characterised in that high-hydroscopicity complex
Grammes per square metre is 80-200g/m2。
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| CN201611182831.0A CN106821601A (en) | 2016-12-20 | 2016-12-20 | A kind of ultra-thin sanitary napkin |
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| CN118596661A (en) * | 2024-06-24 | 2024-09-06 | 江苏君华特种高分子材料股份有限公司 | A method for preparing carbon fiber felt reinforced composite material |
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