CN108004793A - A kind of preparation method of graphene non-woven cloth - Google Patents
A kind of preparation method of graphene non-woven cloth Download PDFInfo
- Publication number
- CN108004793A CN108004793A CN201710969519.4A CN201710969519A CN108004793A CN 108004793 A CN108004793 A CN 108004793A CN 201710969519 A CN201710969519 A CN 201710969519A CN 108004793 A CN108004793 A CN 108004793A
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- graphene
- woven cloth
- preparation
- porous
- solution
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- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0043—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers
- D06N3/005—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers obtained by blowing or swelling agent
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K7/24—Expanded, porous or hollow particles inorganic
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/14—Properties of the materials having chemical properties
- D06N2209/141—Hydrophilic
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1671—Resistance to bacteria, mildew, mould, fungi
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/24—Personal care
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- Chemical Kinetics & Catalysis (AREA)
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- Organic Chemistry (AREA)
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Abstract
The present invention relates to a kind of preparation method of graphene non-woven cloth, including：Step 1, use polymerized monomer deionized water to be configured to concentration as 25% 65% solution, adds dispersant, pore-foaming agent and simultaneously stirs 5 30min；Graphene powder, be added in the solution of step 1 by step 2, and graphene suspension mixed solution A is obtained after ultrasonic disperse；Step 3, by graphene suspension mixed solution be warming up to 42 85 DEG C, then adds crosslinking agent, and ultrasonic disperse, forms graphene suspension mixed solution B；Step 4, using spray thrower equably sprayed graphene suspension B in nonwoven substrate top layer successively；Step 5, by initiator be configured to solution, and initiator is equably sprayed on nonwoven substrate top layer using double sprayers, triggers cross-linked polymeric, pore-creating, obtains graphene non-woven cloth；Step 6：Graphene non-woven cloth is placed in baking oven processing is dried, obtain graphene non-woven cloth.
Description
Technical field
The present invention relates to disposable hygienic field of material technology, more particularly to a kind of preparation side of graphene non-woven cloth
Method.
Background technology
Graphene (graphene) refers to the tightly packed single layer of carbon atom into bi-dimensional cellular shape structure, it is to build it
The elementary cell of its dimension carbon material (such as zero dimension fullerene, one-dimensional carbon nanotubes, three-dimensional graphite).Single-layer graphene has big
Specific surface area, excellent conduction, heat conductivility and low thermal coefficient of expansion.Especially its highly conductive property, big ratio surface
The structural property of property and its monolayer two-dimensional nanoscale, can the bipolar plates of fuel cell, ultracapacitor and lithium from
It is used as electrode material in sub- battery etc..
In addition, researcher has found that graphene has certain anti-microbial property in conventional research center, such as《The U.S.
Chemical meeting-nanometer》（ACS-Nano, 2010 volume 4 page 4317）Report a kind of graphene paper reduced by graphene oxide
With certain anti-microbial property, then there is a series of graphene with preferable anti-microbial property/silver nanoparticle composite antibacterial material
Material, still, since nano silver is in granular form, granularity is Nano grade, can only often be gathered in the privileged site of graphene, can not
Surface is evenly distributed on, so as to influence antibacterial effect；Meanwhile nano silver can not combine closely with graphene, particularly but nanometer
During Argent grain content increase, agglomeration easily occurs, easily comes off in use, so as to influence service life and antibacterial
Effect.
Find that graphene has certain anti-microbial property in conventional research, then occur a series of with preferably anti-
The graphene of bacterium performance/silver nanoparticle composite antibacterial material, research find that such material is respectively provided with certain answer in the technique of preparation
Polygamy or using effect have certain limitation.Some researchs choose titanium dioxide and carry out collaboration promotion graphene/silver
Anti-microbial property, this is stable, anti-using the higher photocatalytic activity of photocatalysis material of titanium dioxide, nontoxicity, chemical property
Photoetch performance waits by force technical characterstic, and existing substantial amounts of report proved that titanium dioxide can be used for field of environment protection in research in the past
In (such as：Air purification, the sterilization of water etc.).
In order to expand the application range of graphene, researcher has started to carry out surface modification to graphene and activation is ground
Study carefully, such as prepare porous graphene to improve the specific surface area of graphene, porous graphene is to pass through thing in the lamella of graphene
Reason or the method for chemistry manufacture some holes with nano-scale, this structure cause graphene as the energy, catalysis or
Not only there is higher specific surface area, but also also good mass transfer effect during absorbing material, given full play to two-dimensional nano piece
The advantage of layer material.It can be seen from the above that porous graphene not only has the property similar with graphene, and the ratio with bigger
Surface area, there are finely dispersed nano-pore, significant edge effect, so that in gas separation membrane, water process, lithium-ion electric
There is potential application in terms of pond, electrochemical catalysis, and then cause researcher's extensive concern.Such as：Yi Lin etc.
(Nanoscale, 2013,5,7814) is etched using the aerial catalysis oxidation of Ag nano particles in graphene surface
Hole.Chemical activation is and for example carried out to graphene under high temperature and inert atmosphere using potassium hydroxide, compares table greatly so as to obtain having
The porous graphene of area and pore diameter range 0.5-5nm.
It can be seen from the above that the exploitation hot spot of graphene is in the prior art：1）Using Graphene antibiosis performance, will contain active
As reducing agent, the phenolic hydroxyl group of such as polyphenol compound and graphene oxide epoxide epoxy group group, hydroxyl etc. contain the material of group
Oxygen groups occur necleophilic reaction and graphene oxide are reduced, though to overcome graphene oxide hydrophilic due between lamella
The defects of effect of " π-π " key and Van der Waals force causes to be not easy to disperse and easily reunite.2）Obtained by surface modification and activation
The graphene of porous graphene high-specific surface area, is mainly used for improving capacitor, the performance of battery, or as catalyst carrier,
Improve catalytic performance.
It is generally known that disposable absorbent article to the absorbability of liquid from the absorptive core included in the inner, the suction
It is the particle for being clamped with 5-12g in the web of loft non-woven cloth using loft non-woven cloth as skeleton or carrier material to receive core
Shape water-absorbing resin, since volume is largely expanded after water-absorbing resin absorption liquid and water-absorbing resin dead weight increases considerably, is caused
Particulate water-absorbing resin colloid displacement, aggregation, or even absorptive core tomography and cause disposable absorbent article absorb liquid mistake
Lose, the form of expression such as situation such as side leakage, leakage, front and back leak so that consumer to the use feeling of disposable absorbent article significantly
Reduce.To avoid the generation of aforementioned circumstances, in the prior art using wrapping up absorptive core after non-woven cloth gluing solving
The tomography of absorptive core or the displacement problem of water-absorbing resin colloid.Non-woven cloth currently as absorptive core wrapping layer is all
Using the non-woven cloth handled through hydrophilic finiss, the type of non-woven cloth include spun-bonded non-woven, spunbond melt-blowing nonwoven,
Through-Air Thermal Bonded Nonwovens, Nonwovens or chemical adhesion non-woven cloth etc..However, there is antibacterial ability for existing non-woven cloth
It is low, lead to not Peculiar Smell caused by the slop that suppression is absorbed in absorptive core, meanwhile, in human pressure
Under the action of, if the body of people is in sitting gesture or when sleeping gesture puts on the pressure of absorptive core, the slop in absorptive core
Extruded upwards from the hole on non-woven cloth and form the larger problem of oozing of returning, and this returns sepage and has bacterium due to growing, so that
User particularly infant user is caused the serious quality problems of skin erythema often occur.Based on described above, this hair
A kind of bright application technology for providing graphene in non-woven cloth, and then a kind of graphene non-woven cloth is provided.In addition, current stone
Application technical research of the black alkene in non-woven cloth is less, does not inquire relevant prior art literature also.
The content of the invention
It is antibacterial existing for existing non-woven cloth for solving it is an object of the invention to provide a kind of graphene non-woven cloth
Ability is low, and it is big to return milliosmolarity under pressure, so as to cause disposable absorbent article existing skin during use is worn
Skin it is dry-ness it is low, be easy to technical problem that skin erythema occur.
In order to realize above-mentioned target, the technical solution taken：The graphene non-woven cloth, including non-woven cloth base
Material, the nonwoven substrate are handled through hydrophilic finiss, and graphene painting is also coated with the top layer of the nonwoven substrate
Layer, the graphite ene coatings have three-dimensional network shape cross-linked structure, including cross-linked structure porous polymeric body continuous phase and
Graphene that is even scattered and being immobilized in the cross-linked structure porous polymeric body continuous phase, its component and parts by weight are as follows：
10-50 parts of graphene；
5-47 parts of cross-linked structure porous polymeric body；
Have on the cross-linked structure porous polymeric body and be mutually communicated and penetrate through to the through hole of the nonwoven substrate.
The cross-linked structure porous polymeric body triggers polymerization and crosslinked dose of crosslinking by polymerized monomer, pore-foaming agent, initiator
Form, wherein, 5-47 parts of polymerized monomer, the dosage of the initiator is the 0.01-2% of polymerized monomer；The use of the crosslinking agent
The 0.05-5% for polymerized monomer is measured, the dosage of the pore-foaming agent is the 0.02-5% of polymerized monomer.Wherein：
The through-hole structure of the cross-linked structure porous polymeric body（Such as pore size）, density etc., for ordinary skill people
It can be adjusted for member by pore-foaming agent.The pore size of the through hole is 50-2000 microns.
The gel strength of the cross-linked structure porous polymeric body, the speed for absorbing liquid etc., for ordinary skill
It can be adjusted for personnel by the species and dosage of crosslinking agent to realize.
In the technology of above-mentioned technical proposal, the graphite ene coatings further include the activity of 10-45 parts of acidified pretreatments
Charcoal, the activated carbon specific surface area are 1400-3800m2/ g, granular size are 200-300 mesh.
Preferably, the graphene be graphene oxide, reduced graphene, the one or more in expanded graphite alkene, institute
The individual layer rate for stating graphene is more than 80%, 6-13 μm of lamella size.
Preferably, the graphene is porous graphene, and the bore dia of the porous graphene is 0.5~100nm；It is described
Porous graphene is porous oxidation graphene, the one or more in porous reduced graphene, porous expanded graphite alkene,.
Preferably, the polymerized monomer for acrylic acid, acrylate, methyl acrylate, glycidyl methacrylate,
One or both of acrylamide, vinyl alcohol, organic fluorocompound combination of the above thing；
Preferably, the crosslinking agent is N, N'- methylene-bisacrylamides, polyisocyanates, polyalcohols, glycidol ether,
One or more combinations in inorganic matter, esters of acrylic acid and epoxies；
Preferably, the initiator is persulfate, or by using bisulfites, the anti-different bad one of which learned in hydrochlorate as also
Former agent, the redox initiation system being composed using the one of which in persulfate, hydrogen peroxide as oxidant.
Preferably, the nonwoven substrate is combined by fibre structure net through thermal finalization, selection spun-bonded non-woven,
Spunbond melt-blowing nonwoven, Through-Air Thermal Bonded Nonwovens, Nonwovens or chemical adhesion non-woven cloth.
Preferably, the pore-foaming agent is inert gas, chemical foaming agent, low boiling point organic solvent and surfactant
One or more combination.Wherein, inert gas is such as：He、Ne、Ar、Kr、Xe、Rn；Chemical foaming agent is such as：Sodium acid carbonate, carbonic acid
Ammonium, azodicarbonamide, azodiisobutyronitrile and N, N- dinitrosoterephthalamine etc.；Low boiling point organic solvent is such as：Fat
Fat race hydro carbons, chloride aliphatic hydrocarbon, fluorine-containing aliphatic hydrocarbon, alicyclic hydrocarbon type, arene, alcohols, ethers, ketone and aldehydes
Deng.
The present invention continues to provide a kind of preparation method of graphene non-woven cloth, includes the following steps：
Step 1：Use deionized water to be configured to solution of the concentration for 25%-65% polymerized monomer, add dispersant, pore-foaming agent simultaneously
Stir 5-30min；
Step 2：Graphene powder is added in the solution of step 1, using ultrasonic disperse 15-220min, graphene is obtained and hangs
Floating mixed liquor A；
Step 3：The graphene suspension mixed solution of step 2 is warming up to 42-85 DEG C, then adds crosslinking agent, and ultrasonic disperse is equal
Even 3-30min, forms graphene suspension mixed solution B；
Step 4：The graphene suspension B of step 3 is equably sprayed in by surface hydrophilic arrangement successively using spray thrower
The upper epidermis and layer of the nonwoven substrate of reason, obtain pretreatment nonwoven substrate；
Step 5：Initiator is configured to solution, treats to use double sprayers that initiator is equably sprayed on to pre- place after the completion of step 4
Nonwoven substrate upper epidermis and layer are managed, triggers cross-linking polymerization, and forms through hole, on the top layer of nonwoven substrate
The upper graphite ene coatings for forming cross-linked structure porous polymeric body coated graphite alkene, obtain graphene non-woven cloth；
Step 6：The surface of graphene non-woven cloth is carried out striking off processing to be placed in 110-170 DEG C of baking oven of temperature and is dried
Processing, obtains graphene non-woven cloth.
Preferably, the dispersant for lauryl sodium sulfate, dioctyl succinate disulfonate acid, dodecyl sodium sulfate,
One or more in neopelex, NaTDC, sodium taurocholate.
What the present invention realized has the beneficial effect that：
1）The graphite ene coatings of the present invention have the cross-linked structure of three-dimensional network shape, and graphene effectively is immobilized on non-woven cloth
On the top layer of base material, the skill that graphene is washed away by liquid during the multiple imbibition of disposable absorbent article, is lost in is avoided
Art problem.
2）The graphite ene coatings of the present invention are the length for having by graphene coated in cross-linked structure porous polymeric body sustained release
Phase antibacterial effect so that graphene non-woven cloth has excellent anti-microbial property, effectively suppresses to be absorbed in absorptive core
Peculiar Smell caused by slop.
3）Cross-linked structure porous polymeric body included by graphite ene coatings has excellent hydrophily, water imbibition in itself, keeps away
Having exempted from absorptive core, the technical problem returned and oozed is extruded and formed upwards to liquid under pressure, fundamentally solves to ooze institute because returning
Caused by moist skin and its technical problem of the skin eczema of generation, increase substantially disposable absorbent article quality and make
With impression.
4）The graphene non-woven cloth of the present invention may better maintain the integrality of absorptive core, avoid absorptive core from making
The water-absorbing resin colloid often occurred during shifts, the quality problems of tomography.
Embodiment
In order to make further understanding to the present invention, term in text is defined as follows：
Term " disposable absorbent article " refers to the excreta for absorbing and accommodating people（Urine, excrement, menses）Article, belong to one
Secondary sex hygiene articles for use, i.e. hygienic articles, which absorb liquid, to be tended to saturation or not to be used after containing the excessive thing such as excrement class, and into
Enter the article of garbage reclamation processing system, including baby paper diaper, baby diaper, two-piece type baby's Tuo La trousers, adult's paper urine
Trousers, adult's nappy etc..
Term " liquid permeability surface layer " refers to hot-melt fiber and is handled by surface hydrophilicity and have excellent permeability to liquid
Non-woven cloth, including liquid permeability surface layer, liquid permeability guide layer.
Term " opaque liquid bottom " is being applied in absorbent article to barrier liquid to the saturating of absorbent article exosmosis
Air film layer, curtain coating film layer or the compound bottom membrane of ventilated membrane and non-woven cloth.
Embodiment 1
In the present embodiment, 10 parts of porous oxidation graphene, 47 parts of acrylate, 0.045 part, N of potassium peroxydisulfate, N'- di-2-ethylhexylphosphine oxides
0.90 part of acrylamide, 0.05 part of lauryl sodium sulfate, 0.9 part of azodicarbonamide, the spunbond handled through hydrophilic finiss are non-
Woven cloths, square grammes per square metre are 20g/m2。
The present embodiment prepares graphene non-woven cloth as follows：
Step 1：Use deionized water to be configured to solution of the concentration for 30%-45% acrylate, add lauryl sodium sulfate,
Azodicarbonamide simultaneously stirs 5-30min.
Step 2：Porous oxidation graphene is added in the solution of step 1, using ultrasonic disperse 30-60min, obtains stone
Black alkene suspension mixed solution A.
Step 3：The graphene suspension mixed solution of step 2 is warming up to 42-85 DEG C, then adds N, N'- di-2-ethylhexylphosphine oxides third
Acrylamide, and the uniform 3-30min of ultrasonic disperse, form graphene suspension mixed solution B；
Step 4：The graphene suspension B of step 3 is equably sprayed to the upper table in spun-bonded non-woven successively using spray thrower
Layer and layer, obtain pretreatment nonwoven substrate；
Step 5：Initiator is configured to the hot solution that concentration is 5%-10%, temperature is 60-90 DEG C, treats to use after the completion of step 4
Double sprayers, are equably sprayed on pretreatment nonwoven substrate upper epidermis and layer by initiator, trigger cross-linked polymeric at the same time
Reaction forms the graphene of cross-linked structure porous polymeric body coated graphite alkene with forming through hole on the top layer of nonwoven substrate
Coating, obtains graphene non-woven cloth；
Step 6：Graphite ene coatings are carried out to strike off processing, is subsequently placed in 110-170 DEG C of baking oven of temperature and processing is dried, obtain
Obtain graphene non-woven cloth.
Graphite ene coatings, the graphene are formed in the absorptive core wrapping layer non-weaving cloth top layer that the present embodiment obtains
Coating includes the cross-linked structure porous polymeric body with three-dimensional network shape, dispersed in cross-linked structure porous polymeric body and solid
Graphene is loaded with, while cross-linked structure porous polymeric body is logical to the nonwoven substrate with being mutually communicated and penetrating through
Hole, the pore size of the through hole is 50-2000 microns so that the present embodiment has the absorption effect of quick permeation liquid downwards
Fruit.
Under multiple acceptance condition, disposable absorbent article is to human urine（Laboratory test uses physiological saline or people
Work urine）Saturated absorption ability is about 300-500ml, wherein, water-absorbing resin for the first time, second to the absorption rate of liquid compared with
It hurry up, but then being largely expanded due to water-absorbing resin colloid, cause gel strength to decline, and then generated to absorptive core
Colloid clogging, causes absorptive core in third time and its subsequently the absorbability of liquid is significantly declined afterwards, herein
Often occur bad diffusion, side leakage, front and back leak in the case of kind and absorptive core returns the defects of milliosmolarity is very big under stress.
The graphene non-weaving cloth top layer of the present embodiment can effectively avoid the generation of said circumstances, it obtains beneficial effect
For：
First, the degree of cross linking of the cross-linked structure porous polymeric body of the present embodiment is higher, have higher cross-link intensity and relative to
Water-absorbing resin in absorptive core has the relatively slow infiltration rate to liquid, meanwhile, cross-linked structure porous polymeric body point
It is furnished with a large amount of related perforations and the through hole with higher-strength so that absorptive core is in first time, second to liquid absorption
Cheng Zhong, liquid can quickly permeate downwards, still, when absorptive core third time and its it is follow-up after to the absorbability of liquid
When significantly declining, at this time, cross-linked structure porous polymeric body can temporary absorption, storage liquid, then progressively downwards infiltration simultaneously
Be transferred in absorptive core, avoid absorptive core because spread it is bad caused by side leakage, front and back leak the problem of.
Secondly, the present embodiment has and reduces absorptive core and return the technique effect oozed, but absorptive core absorbent cores under stress
When internal liquid is extruded upwards, which is crosslinked structural porous condensate, avoids liquid and continues up extrusion and shape
Into big the problem of returning milliosmolarity.
Again, it is crosslinked structural porous condensate and coats immobilized graphene to Escherichia coli, staphylococcus aureus tool
There is the effect of excellent antibacterial taste removal.
Embodiment 2
In the present embodiment, porous 50 parts of reduced graphene, 10 parts of acrylic acid, 0.001 part, N of potassium peroxydisulfate, N'- di-2-ethylhexylphosphine oxides third
0.30 part of acrylamide, 0.2 part of lauryl sodium sulfate, 0.2 part of azodicarbonamide, the hot rolling handled through hydrophilic finiss are non-woven
Cloth, square grammes per square metre are 18g/m2。
Obtained absorptive core wrapping layer is made with forming graphene in non-weaving cloth top layer by the preparation method of embodiment 1
Coating, which includes the cross-linked structure porous polymeric body with three-dimensional network shape, in cross-linked structure porous polymeric body
It is interior dispersed and it is immobilized have a graphene, while cross-linked structure porous polymeric body has and is mutually communicated and penetrates through to described non-woven
Through hole on cloth base material, the pore size of the through hole is 50-2000 microns so that the present embodiment has quick downward penetrating fluid
The assimilation effect of body.
There is the present embodiment quick permeation liquid downwards, reduction absorptive core described in embodiment 1 to return the assimilation effect oozed
And the technique effect with excellent antibacterial performance.
Embodiment 3
In the present embodiment, 30 parts of porous oxidation graphene, 35 parts of methyl acrylate, 0.035 part, N of potassium peroxydisulfate, N'- methylene
0.70 part of bisacrylamide, 0.2 part of lauryl sodium sulfate, 0.2 part of azodicarbonamide, 0.5 part of azodiisobutyronitrile, through parent
Water arranges the Nonwovens of processing, and square grammes per square metre is 20g/m2。
Obtained absorptive core wrapping layer is made with forming graphene in non-weaving cloth top layer by the preparation method of embodiment 1
Coating, which includes the cross-linked structure porous polymeric body with three-dimensional network shape, in cross-linked structure porous polymeric body
It is interior dispersed and it is immobilized have a graphene, while cross-linked structure porous polymeric body has and is mutually communicated and penetrates through to described non-woven
Through hole on cloth base material, the pore size of the through hole is 50-2000 microns so that the present embodiment has quick downward penetrating fluid
The assimilation effect of body.
There is the present embodiment quick permeation liquid downwards, reduction absorptive core described in embodiment 1 to return the assimilation effect oozed
And the technique effect with excellent antibacterial performance.
Embodiment 4
In the present embodiment, 20 parts of porous oxidation graphene, 20 parts of activated carbon, 30 parts of acrylate, 0.03 part, N of potassium peroxydisulfate,
0.45 part of N'- methylene-bisacrylamides, 0.2 part of lauryl sodium sulfate, 0.3 part of azodicarbonamide, azodiisobutyronitrile
0.3 part, the Nonwovens handled through hydrophilic finiss, square grammes per square metre is 21g/m2。
Obtained absorptive core wrapping layer is made with forming graphene in non-weaving cloth top layer by the preparation method of embodiment 1
Coating, which includes the cross-linked structure porous polymeric body with three-dimensional network shape, in cross-linked structure porous polymeric body
It is interior dispersed and it is immobilized have a graphene, while cross-linked structure porous polymeric body has and is mutually communicated and penetrates through to described non-woven
Through hole on cloth base material, the pore size of the through hole is 50-2000 microns so that the present embodiment has quick downward penetrating fluid
The assimilation effect of body.
There is the present embodiment quick permeation liquid downwards, reduction absorptive core described in embodiment 1 to return the assimilation effect oozed
And the technique effect with excellent antibacterial performance.
Embodiment 5
In the present embodiment, 10 parts of porous oxidation graphene, 10 parts of activated carbon, 5 parts of acrylate, 0.005 part, N of potassium peroxydisulfate,
0.05 part of N'- methylene-bisacrylamides, 0.1 part of lauryl sodium sulfate, 0.1 part of azodicarbonamide, at hydrophilic finiss
The Through-Air Thermal Bonded Nonwovens of reason, square grammes per square metre are 22g/m2。
Obtained absorptive core wrapping layer is made with forming graphene in non-weaving cloth top layer by the preparation method of embodiment 1
Coating, which includes the cross-linked structure porous polymeric body with three-dimensional network shape, in cross-linked structure porous polymeric body
It is interior dispersed and it is immobilized have a graphene, while cross-linked structure porous polymeric body has and is mutually communicated and penetrates through to described non-woven
Through hole on cloth base material, the pore size of the through hole is 50-2000 microns so that the present embodiment has quick downward penetrating fluid
The assimilation effect of body, reduce and return milliosmolarity and antibacterial effect.
Embodiment 6
In the present embodiment, 50 parts of porous oxidation graphene, 40 parts of activated carbon, 47 parts of acrylate, 0.03 part, N of potassium peroxydisulfate,
0.45 part of N'- methylene-bisacrylamides, 0.45 part of lauryl sodium sulfate, 0.4 part of azodicarbonamide, azodiisobutyronitrile
0.4 part, the spun-bonded non-woven handled through hydrophilic finiss, square grammes per square metre is 18g/m2。
Obtained absorptive core wrapping layer is made with forming graphene in non-weaving cloth top layer by the preparation method of embodiment 1
Coating, which includes the cross-linked structure porous polymeric body with three-dimensional network shape, in cross-linked structure porous polymeric body
It is interior dispersed and it is immobilized have a graphene, while cross-linked structure porous polymeric body has and is mutually communicated and penetrates through to described non-woven
Through hole on cloth base material, the pore size of the through hole is 50-2000 microns so that the present embodiment has quick downward penetrating fluid
The assimilation effect of body, reduce and return milliosmolarity and antibacterial effect.
Embodiment 7
The present embodiment carries out graphene non-woven cloth made from embodiment 1 to embodiment 6 absorbent properties, anti-microbial property respectively
Test.
（One）Absorbent properties are tested：
1st, test sample
Test specimen：By manual sample preparation technique, using graphene non-woven cloth made from embodiment 1 to embodiment 6 as once
The core wrap layer of property absorbent article.
Contrast sample：Type according to embodiment 1 to the nonwoven substrate of embodiment 6 respectively, passes through common commercially available canal
Road obtains same type of non-woven cloth, the core wrap layer as disposable absorbent article.
2nd, test sample production method：
1）Commercially available same brand, same specifications and models and with a batch of disposable absorbent article are purchased, passing through air-heater will
The permeable top layer of disposable absorbent article, the separation of leakproof edge, then take out absorptive core, stand-by.
2）Using hot melt adhesive glue sprayer, respectively in graphene non-woven cloth and absorbent cores made from embodiment 1 to embodiment 6
Glue spraying processing is carried out on the knot contact surface that body glues, and parcel processing is carried out to absorptive core using graphene non-woven cloth.
3）The same glue spraying for using hot melt adhesive glue sprayer, will put by the absorptive core of graphene non-woven cloth parcel processing
Enter in disposable absorbent article, and bond covering permeable top layer, leakproof edge, form the test specimen of the present embodiment.
4）Using process above, the contrast sample of obtained the present embodiment.
3rd, test method
3.1 absorbent properties are tested
1）By disposable absorbent article full extension, pave after stick in the magic of test board and hook, and leakproof edge is supported
Erect, and liquid feeding point is set in the symmetrical centre point of disposable absorbent article.
2）The physiological saline for measuring 120ml is poured into disposable absorbent article, and instant timing, until liquid is from disposable
Disappear on the liquid permeability surface layer of absorbent article, be denoted as first time soak time t1.
3）10min after being absorbed in first time, continues to measure the operation of the physiological saline repeat step 2 of 120ml
Secondary absorption is carried out, is denoted as second of soak time t2.
4）10min after being absorbed at second, continues to measure the operation of the physiological saline repeat step 2 of 120ml
The absorption of third time is carried out, is denoted as third time soak time t3, and remembers the most long diffusion length of third time.
5）Take ERT FF3 standard filter papers multiple and overlap weigh, be denoted as m1, be placed in the liquid feeding of tested disposable absorbent article
On point, add the briquetting of 4 kilograms of 10cm × 10cm, briquetting is removed after 3min, weigh the weight of ERT FF3 standard filter papers, be denoted as
M2, calculates increased weight M, and M is to return milliosmolarity.
Each sample test 3, and be averaged.
3.2 anti-microbial property test：The test method of bacteriostasis rate refers to GB15979《Disposable Sanitary Accessory health mark
It is accurate》.
4th, test result
4.1 absorbent properties test datas are as follows：
As shown by data in table, cross-linked structure porous polymeric body of the invention have higher cross-link intensity and relative to absorptive cores
Interior water-absorbing resin has the relatively slow infiltration rate to liquid, meanwhile, cross-linked structure porous polymeric body is distributed with largely
Correlation perforation and the through hole with higher-strength so that absorptive core is in first time, second and third time to liquid absorption
During, liquid can quickly permeate downwards.
However, when absorptive core third time and its it is follow-up after the absorbability of liquid is significantly declined when, crosslinking
Structural porous condensate plays temporary absorption, storage liquid, is then progressively permeating downwards and is being transferred in absorptive core, is avoiding
Absorptive core because spread it is bad caused by side leakage, front and back leak the problem of.
As shown by data in table, of the invention having reduces absorptive core and returns the technique effect oozed, but absorptive core is in pressure
When liquid in lower absorptive core is extruded upwards, which is crosslinked structural porous condensate, avoids liquid and continues up
Extrude and form big the problem of returning milliosmolarity.
4.2 anti-microbial property test：
Embodiment 1 to embodiment 6 20min bacteriostasis rates（%）As a result it is as follows：
As shown by data in table, graphite ene coatings of the invention there is well antibacterial to remove Escherichia coli, staphylococcus aureus
Taste effect and lasting inhibitory action.
Embodiment 8
The present embodiment provides the disposable absorbent article using graphene non-woven cloth of the present invention.
The disposable absorbent article, predominantly infant take off draw trousers, paper diaper for infant, comprising liquid permeability surface layer,
Opaque liquid bottom and the absorptive core between liquid permeability surface layer and opaque liquid bottom, its design feature are to use
Graphene non-woven cloth of the present invention wraps up absorptive core, and passes through hot melt adhesive tack coat and the absorptive core
Gluing is connected as a single entity.
Although the present invention describes specific case study on implementation, the scope of the invention is not limited to above-mentioned specific real
Example is applied, without departing from the case in the spirit of the invention, various modifications, variations and alternatives to the present invention each fall within the guarantor of the present invention
Protect scope.
Claims (9)
1. a kind of preparation method of graphene non-woven cloth, includes the following steps：
Step 1：Use deionized water to be configured to solution of the concentration for 25%-65% polymerized monomer, add dispersant, pore-foaming agent simultaneously
Stir 5-30min；
Step 2：Graphene powder is added in the solution of step 1, using ultrasonic disperse 15-220min, graphene is obtained and hangs
Floating mixed liquor A；
Step 3：The graphene suspension mixed solution of step 2 is warming up to 42-85 DEG C, then adds crosslinking agent, and ultrasonic disperse is equal
Even 3-30min, forms graphene suspension mixed solution B；
Step 4：The graphene suspension B of step 3 is equably sprayed in by surface hydrophilic arrangement successively using spray thrower
The upper epidermis and layer of the nonwoven substrate of reason, obtain pretreatment nonwoven substrate；
Step 5：Initiator is configured to solution, treats to use double sprayers that initiator is equably sprayed on to pre- place after the completion of step 4
Nonwoven substrate upper epidermis and layer are managed, triggers cross-linking polymerization, crosslinking is formed on the top layer of nonwoven substrate
The graphite ene coatings of structural porous condensate coated graphite alkene, obtain graphene non-woven cloth；
Step 6：Graphene non-woven cloth is placed in 110-170 DEG C of baking oven of temperature processing is dried, obtain that graphene is non-knits
Make cloth.
2. the preparation method of graphene non-woven cloth according to claim 1, it is characterised in that：In the step 2 also
Activated carbon including adding 10-45 parts of acidified pretreatments, the activated carbon specific surface area is 1400-3800m2/ g, particle are big
Small is 200-300 mesh.
3. the preparation method of graphene non-woven cloth according to claim 1, it is characterised in that：The dispersant is 12
Sodium alkyl sulfate, dioctyl succinate disulfonate acid, dodecyl sodium sulfate, neopelex, NaTDC, cholic acid
One or more in sodium.
4. the preparation method of graphene non-woven cloth according to claim 1, it is characterised in that：Count in parts by weight, institute
State 10-50 parts of graphene；5-47 parts of polymerized monomer；Wherein, the dosage of the initiator is the 0.01-2% of polymerized monomer；
The dosage of the crosslinking agent is the 0.05-5% of polymerized monomer.
5. the preparation method of graphene non-woven cloth according to claim 1, it is characterised in that：The graphene is oxidation
One or more in graphene, reduced graphene, expanded graphite alkene, the individual layer rate of the graphene are more than 80%, lamella size
6-13μm。
6. the preparation method of graphene non-woven cloth according to claim 5, it is characterised in that：The graphene is porous
Graphene, the bore dia of the porous graphene is 0.5~100nm；The porous graphene is porous oxidation graphene, porous
One or more in reduced graphene, porous expanded graphite alkene,.
7. the preparation method of the graphene non-woven cloth according to claim 1 or 4, it is characterised in that：The polymerized monomer
For acrylic acid, acrylate, methyl acrylate, glycidyl methacrylate, acrylamide, vinyl alcohol, organic fluorocompound
One or both of combination of the above thing.
8. the preparation method of the graphene non-woven cloth according to claim 1 or 4, it is characterised in that：The crosslinking agent is
N, N'- methylene-bisacrylamide, polyisocyanates, polyalcohols, glycidol ether, inorganic matter, esters of acrylic acid and ring
One or more combinations in oxygen class.
9. the preparation method of the graphene non-woven cloth according to claim 1 or 4, it is characterised in that：The initiator is
Persulfate, or by learning the one of which in hydrochlorate using bisulfites, anti-different evil idea as reducing agent, with persulfate, peroxidating
One of which in hydrogen is the redox initiation system that oxidant is composed.
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Cited By (1)
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