CN104193885B - Strong wettability acrylate foamed materials and its preparation method and application - Google Patents
Strong wettability acrylate foamed materials and its preparation method and application Download PDFInfo
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- CN104193885B CN104193885B CN201410353791.6A CN201410353791A CN104193885B CN 104193885 B CN104193885 B CN 104193885B CN 201410353791 A CN201410353791 A CN 201410353791A CN 104193885 B CN104193885 B CN 104193885B
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Abstract
Open a kind of strong wettability acrylate foamed materials of the present invention and its preparation method and application, the strong wettability acrylate foamed materials prepared has certain toughness, and abscess-size is small, and wettability is strong, and the rate of water absorption of the foamed materials prepared is high；The ionized water rate that averagely sucks of the acrylate foamed materials of the present invention, average absorption salt ratio, the artificial urine rate of average suction, average artificial blood rate of inhaling are all higher than 15g/g, halfhour water retention is all more than 85%, being suitable for dispersion and store aqueous fluid, therefore the block flexible absorbent material of the present invention is well suited for being applied to hygiene article sector.
Description
Technical field
The invention belongs to absorbent material field, be specifically related to a kind of strong wettability acrylate foamed materials and preparation method thereof and
Application.
Background technology
Present hygienic article, the absorbent material of the inside mainly has granular synthetic resin, absorbs water, inhales urine or suck blood
Gel can be formed later, the most agglomerating, cause more difficult being fixed on a position, actually used during make us very uncomfortable.Cause
The flexible absorbent material of this exploitation bulk has great significance.
Common blood is made up of hemocyte, blood plasma etc..About a diameter of 8 μm of hemocyte, and acrylic molecules
Diameter is much smaller than the diameter of hemocyte.Therefore hemocyte is difficult to be absorbed by gelatinous super absorbent resin, can only rest on height
The surface of water-absorbing resins, the composition such as the blood plasma in the simply blood of absorption.So exploitation porous type polymer, compare table to expand
Area, improves the aspects such as permeability, the infiltration rate of accelerating liquid and absorbance and has important technical economic benefit and society's effect
Benefit.
For using the foamed materials prepared of acrylic ester monomer, strong wettability acrylate foam material disclosed in prior art
Although improve water absorption rate and the water retention of product on material partial extent, but still suffer from can for prepared acrylate foamed materials
The defect of moist difference, and the wettability of foamed materials directly influences the rate of water absorption of product, wettability is the poorest, and acrylate steeps
The rate of water absorption of foam material is the lowest.Material is had great by wettable performance in actual applications that therefore increase acrylate foamed materials
Meaning.
Summary of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, it is provided that a kind of strong wettability acrylate foamed materials
Preparation method, the present invention, by changing the proportioning of monomer, the use of electrolyte and the interpolation of water-soluble monomer, improves propylene
The wettability of acid esters foamed materials, thus improve the rate of water absorption of product further, improve the using value of product.
It is a further object to provide the strong wettability acrylate foam material prepared by preparation method of the present invention
Material.
It is a further object to provide the application in hygienic article of the described strong wettability acrylate foamed materials.
The above-mentioned purpose of the present invention is achieved by following technical solution:
The preparation method of strong wettability acrylate foamed materials, comprises the steps:
S1. oil-based system is prepared: percentage weighs 25%～95% monofunctional acrylate class monomer, 2%～60% and cross-links
Agent, 1%～10% water-soluble monomer, 1%～15% emulsifier for mixing mixing；
S2. aqueous phase system is prepared: preparation mass fraction is the electrolyte aqueous solution of 0.01～3%；
S3. divide aqueous phase system 2～4 times at 60～80 DEG C to add in oil-based system, stir, final aqueous phase and the volume of oil phase
Ratio is 10～100:1；
S4. in the mixed system of step S3, add water soluble starter carry out emulsion polymerization；
S5. step S4 gained polymerizate is placed in isothermal curing, washing, dehydrate at 80～100 DEG C and i.e. obtains product；
Described monofunctional acrylate class monomer is simple function alkyl acrylate and the mixture of simple function alkyl methacrylate；Its
In, the mass ratio of described simple function alkyl acrylate and simple function alkyl methacrylate is 7:1～11:1；
Described cross-linking agent is one or more in multifunctional alkyl acrylate or multifunctional alkyl methacrylate；
Described water-soluble monomer is acrylic acid or vinyl acetate.
In the present invention by change the simple function alkyl acrylate in oil phase and the proportioning of simple function alkyl methacrylate,
The interpolation of electrolyte, interpolation especially by water-soluble monomer, water-soluble monomer contributes to making the table of acrylate foamed materials
Mask has bigger wettability；Thus improve the rate of water absorption of product further.Because water-soluble monomer has hydrophilic group, example
Such as hydroxyl, carboxyl etc., the existence of these hydrophilic groups makes acrylate foamed materials have more preferable hydrophilic, thus improves it and inhale
Water speed.
Preferably, the consisting of of oil-based system described in step S1: percentage weighs 45%～75% simple function propylene
Esters of gallic acid monomer, 15%～40% cross-linking agent, 2%～8% water-soluble monomer, 5%～15% emulsifying agent.
Preferably, described simple function alkyl acrylate is Isooctyl acrylate monomer, isodecyl acrylate, octadecyl base
Ester or lauryl acrylate, described simple function alkyl methacrylate be 2-Propenoic acid, 2-methyl-, isooctyl ester, isodecyl methacrylate,
Octadecyl methacrylate or lauryl methacrylate.
It is further preferred that described monofunctional acrylate class monomer is the mixed of Isooctyl acrylate monomer and 2-Propenoic acid, 2-methyl-, isooctyl ester
Compound.
Described multifunctional alkyl acrylate is hexanediol diacrylate, triethylene glycol diacrylate, dipropylene glycol dipropyl
Olefin(e) acid ester or tripropylene glycol diacrylate, described multifunctional alkyl methacrylate be Ethylene glycol dimethacrylate, three
Ethylene glycol dimethacrylate, dipropylene or tripropylene glycol dimethylacrylate.
The present inventor finds in an experiment, and the mass ratio changing Isooctyl acrylate monomer and 2-Propenoic acid, 2-methyl-, isooctyl ester can significantly improve
The water absorption of acrylate foamed materials and the abscess-size of foamed materials, improve the absorbance of acrylate foamed materials further
And widen its application.
It is therefore preferred that the mass ratio of described Isooctyl acrylate monomer and 2-Propenoic acid, 2-methyl-, isooctyl ester is 7:1～11:1.
It is further preferred that the mass ratio of described Isooctyl acrylate monomer and 2-Propenoic acid, 2-methyl-, isooctyl ester is 9:1.
The present inventor finds in an experiment, in formula described herein, and the mass fraction of solute in electrolyte aqueous solution
Under the concentration conventional less than prior art, still can make abscess-size more uniformly, unanimously；Even and if electrolyte is dense
Degree as little as 0.01%, and compared with electrolyte, still tool is significantly improved the effect of water absorbing properties, and material is soft
Toughness is more preferable, is difficult to split.
It is therefore preferred that the mass fraction of described electrolyte aqueous solution is 0.01%～1%.
It is further preferred that the mass fraction of described electrolyte aqueous solution is 0.02%～0.1%.
Electrolyte of the present invention is this area conventional soluble electrolyte, it is therefore an objective to the salt ionic concentration improving system reduces oil
The monomer of dissolubility, the comonomer dissolubility in aqueous phase, it is preferable that described electrolyte is the one in metal ion compound
Or it is multiple.
Preferably, the cation of described metal ion compound be potassium ion, sodium ion, calcium ion, magnesium ion, aluminium ion,
Zinc ion or iron ion, anion is chloride ion, nitrate ion, borate ion, phosphate anion or carbanion；
The ionic compound of above-mentioned cation and anion combination is water insoluble or except being slightly soluble in water.
Preferably, described metal ion compound be calcium chloride, calcium nitrate, aluminum chloride, aluminum nitrate, magnesium chloride, magnesium nitrate,
Potassium phosphate, sodium phosphate, potassium borate, sodium borate, potassium carbonate or sodium carbonate.Above-mentioned electrolyte comprises strong base-weak acid salt or strong acid is soft
Alkali salt, these salt have certain pH value shock-absorbing capacity, are more beneficial for being smoothed out of emulsion polymerization.Additionally, this area skill
Art personnel can get rid of many kinds of metal ions compound according to general knowledge and be applied in combination the situation of generation precipitation.
Preferably, described metal ion compound is calcium chloride, calcium nitrate or aluminum chloride.
It is to form emulsion with monomer that the present invention adds the effect of emulsifying agent, is polymerized offer condition for emulsion, owing to the present invention is made
Monomer be substantially insoluble in water, thus use hydrophobic emulsifying agent to be more beneficial for disperseing monomer of the present invention and reducing it in water
Dissolubility；Preferably, described emulsifying agent includes side chain C16～C24Fatty acid, straight chain unsaturation C16～C22Fatty acid or straight
The saturated C of chain12～C14The anhydrosorbitol monoester of fatty acid.
It is further preferred that described emulsifying agent is that tween 20, Tween-40, Tween-60, tween 80 or diglycerol list are different firmly
Fat acid ester.
The consumption of initiator that the present invention uses can select according to this area conventional emulsion polymerization, usually monomer weight
0.1%～20%.
The kind of described initiator also can select, such as persulfate initiator according to the kind of this area polymerization monomer, it is preferable that
Described initiator is Ammonium persulfate., sodium peroxydisulfate or potassium peroxydisulfate.
The present invention is after determining aqueous phase and the final ratio of oil phase, and aqueous phase divides 2～4 times and adds in oil phase, becomes sticky in emulsion
Aqueous phase next time is added, it is therefore an objective to use the mode of multistage interpolation can to make under identical mixing residence time before thick
Obtain high aqueous phase and the emulsion of oil phase weight ratio, simultaneously it is also possible that the abscess-size of product is uniform, consistent.Preferably, will
Aqueous phase is divided into 2/3 and 1/3 two parts, first by oil phase and 2/3 aqueous phase mix homogeneously, adds remaining before emulsion becomes viscous
1/3 aqueous phase mix homogeneously.
It is cured as described in step S5 pouring reacted polymerizate emulsion into mould being put in constant temperature oven and solidifies, control
Under the conditions of 80～100 DEG C, the purpose of isothermal curing is to ensure that water does not seethes with excitement while acrylate fast setting allowing, it is to avoid
Material surface produces pore not of uniform size.
Washing purpose described in step S5 to be to remove the remaining equal impurity of initial water, described dehydrate is also at constant temperature oven
Or carry out in vacuum drying oven, dehydrate temperature is 80～100 DEG C.
The strong wettability acrylate foamed materials obtained according to above-mentioned preparation method.
The present invention passes through specific formula, and the strong wettability acrylate foamed materials using specific preparation method to prepare has one
Fixed toughness, abscess-size is small, has preferably water suction, inhales urine, performance of sucking blood, and the absorbance of material is high, uses in health
Product field has great application prospect.Concrete preparation technology flow process is referred to shown in Fig. 1.
The range of cell sizes that the acrylate foamed materials of the present invention has be 10 μm to 30 μm, so be suitable for dispersion and storage
Deposit aqueous fluid.Additionally, due to about a diameter of 8 μm of human body hemocyte, the diameter of existing acrylic molecules is much smaller than blood
The diameter of cell, thus the acrylate foamed materials of the present invention is particularly suitable for Material Field of sucking blood.
Compared with prior art, there is advantages that
The invention discloses the preparation method of a kind of strong wettability acrylate foamed materials, by adding water-soluble monomer in oil phase,
Improve the wettability of the acrylate foamed materials of preparation, thus increase the rate of water absorption of product further；By changing oil phase
In the proportioning of monomer and the interpolation of electrolyte so that the strong wettability acrylate foamed materials prepared has the most tough
Property, abscess-size is small, and it averagely sucks ionized water rate, average absorption salt ratio, average inhales artificial urine rate, averagely inhales artificial blood
Rate is all higher than 15g/g, and halfhour water retention, all more than 80%, is suitable for dispersion and stores aqueous fluid, the therefore present invention
Block flexible absorbent material is well suited for being applied to hygiene article sector.
Accompanying drawing explanation
Fig. 1 is that strong wettability acrylate foamed materials preparation technology flow process is with reference to figure.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is further explained, but the present invention is not appointed by specific embodiment
What limits.Unless stated otherwise, involved in embodiment reagent, method are reagent commonly used in the art and method.
Embodiment 1
One, the preparation of strong wettability acrylate foamed materials
(1) preparation oil-based system, weighs Isooctyl acrylate monomer 7.2g, 2-Propenoic acid, 2-methyl-, isooctyl ester 0.8g, ethylene glycol dimethacrylate
Ester 4.8g, hexanediol diacrylate 0.4g, 0.8g acrylic acid, tween 80 1.3g, stir oil phase stand-by, wherein,
Isooctyl acrylate monomer is 9:1 with the mass ratio of 2-Propenoic acid, 2-methyl-, isooctyl ester.
(2) preparation aqueous phase system, weighs calcium chloride 0.096g, adds water to 480g and makes it dissolve, now, and electrolyte
Mass fraction is 0.02%, stand-by.
(3) preparation initiator phase, weighs Ammonium persulfate. 1.71g, adds water to 10g and make it dissolve, stand-by.
(4) prepared aqueous phase 320g is proceeded in the there-necked flask of 1000ml, start stirring, be warming up to 75 DEG C, stirring
The oil phase stirred, more than 800 turns, is then added in there-necked flask, before becoming viscous etc. emulsion, then drips 160g by speed
Aqueous phase is in flask, and finally dropping initiator is in flask, after polyreaction, mixed liquor is poured into big politef square plate
In, close the lid, put in 97 DEG C of baking ovens 0.5 hour, after forming and hardening, take out extruding and washing, then take in baking oven
Face is dried.
Two, product test
Prepared by product out there is certain toughness, abscess-size is small, and wettability is strong, and rate of water absorption reaches 6.7g/ (g*s)；Logical
Overscanning ultramicroscope (SEM) is tested, and the abscess-size of product is 10～30 μm.Its averagely suck ionized water rate be 23.8g/g,
Average absorption salt ratio is 24.8g/g, the artificial urine rate of average suction is 26.2g/g, average artificial blood rate of inhaling is 25.9g/g, halfhour
Water retention, all more than 92%, is suitable for dispersion and stores aqueous fluid, being suitable for hygiene article sector.
Embodiment 2
One, the preparation of strong wettability acrylate foamed materials
(1) preparation oil-based system, weighs Isooctyl acrylate monomer 5.6g, 2-Propenoic acid, 2-methyl-, isooctyl ester 0.8g, ethylene glycol dimethacrylate
Ester 4.8g, hexanediol diacrylate 0.4g, 1g acrylic acid, tween 80 1.3g, stir oil phase stand-by, wherein, and third
The different monooctyl ester of olefin(e) acid is 7:1 with the mass ratio of 2-Propenoic acid, 2-methyl-, isooctyl ester.
(2) preparation aqueous phase system, weighs calcium chloride 0.48g, adds water to 480g and makes it dissolve, now, and electrolyte
Mass fraction is 0.1%, stand-by.
(3) preparation initiator phase, weighs Ammonium persulfate. 1.71g, adds water to 10g and make it dissolve, stand-by.
(4) prepared aqueous phase 320g is proceeded in the there-necked flask of 1000ml, start stirring, be warming up to 75 DEG C, stirring
The oil phase stirred, more than 800 turns, is then added in there-necked flask, before becoming viscous etc. emulsion, then drips 160g by speed
Aqueous phase is in flask, and finally dropping initiator is in flask, after polyreaction, mixed liquor is poured into big politef square plate
In, close the lid, put in 97 DEG C of baking ovens 0.5 hour, after forming and hardening, take out extruding and washing, then take in baking oven
Face is dried.
Two, product test
Prepared by product out there is certain toughness, abscess-size is small, and the strong rate of water absorption of wettability reaches 7.2g/ (g*s)；Pass through
Scanning electron microscope (SEM) is tested, and the abscess-size of product is 10～30 μm.Its averagely suck ionized water rate be 19.4g/g,
Average absorption salt ratio is 19.6g/g, the artificial urine rate of average suction is 18.9g/g, average artificial blood rate of inhaling is 20.23g/g, halfhour
Water retention, all more than 88%, is suitable for dispersion and stores aqueous fluid, being suitable for hygiene article sector.
Embodiment 3
One, the preparation of strong wettability acrylate foamed materials
(1) preparation oil-based system, weighs Isooctyl acrylate monomer 8.8g, 2-Propenoic acid, 2-methyl-, isooctyl ester 0.8g, ethylene glycol dimethacrylate
Ester 4.8g, hexanediol diacrylate 0.4g, 1.1g acrylic acid, tween 80 1.3g, stir oil phase stand-by, wherein,
Isooctyl acrylate monomer is 11:1 with the mass ratio of 2-Propenoic acid, 2-methyl-, isooctyl ester.
(2) preparation aqueous phase system, weighs calcium chloride 4.8g, adds water to 480g and makes it dissolve, now, and the matter of electrolyte
Amount mark is 1%, stand-by.
(3) preparation initiator phase, weighs Ammonium persulfate. 1.71g, adds water to 10g and make it dissolve, stand-by.
(4) prepared aqueous phase 320g is proceeded in the there-necked flask of 1000ml, start stirring, be warming up to 75 DEG C, stirring
The oil phase stirred, more than 800 turns, is then added in there-necked flask, before becoming viscous etc. emulsion, then drips 160g by speed
Aqueous phase is in flask, and finally dropping initiator is in flask, after polyreaction, mixed liquor is poured into big politef square plate
In, close the lid, put in 97 DEG C of baking ovens 0.5 hour, after forming and hardening, take out extruding and washing, then take in baking oven
Face is dried.
Two, product test
Prepared by product out there is certain toughness, abscess-size is small, can hygroscopicity strong, rate of water absorption reaches 7.4g/ (g*s；
Being tested by scanning electron microscope (SEM), the abscess-size of product is 10～30 μm.It averagely sucks ionized water rate
20.26g/g, average absorption salt ratio are 20.87g/g, the artificial urine rate of average suction is 21.25g/g, average artificial blood rate of inhaling is 25.26g/g,
Halfhour water retention, all more than 91%, is suitable for dispersion and stores aqueous fluid, being suitable for hygiene article sector.
Embodiment 4
One, the preparation of strong wettability acrylate foamed materials
(1) preparation oil-based system, weighs Isooctyl acrylate monomer 8.8g, 2-Propenoic acid, 2-methyl-, isooctyl ester 0.8g, ethylene glycol dimethacrylate
Ester 4.8g, hexanediol diacrylate 0.4g, 0.9g vinyl acetate, tween 80 1.3g, stir oil phase stand-by, its
In, Isooctyl acrylate monomer is 11:1 with the mass ratio of 2-Propenoic acid, 2-methyl-, isooctyl ester.
(2) preparation aqueous phase system, weighs calcium nitrate 14.4g, adds water to 480g and makes it dissolve, now, and electrolyte
Mass fraction is 3%, stand-by.
(3) preparation initiator phase, weighs Ammonium persulfate. 1.71g, adds water to 10g and make it dissolve, stand-by.
(4) prepared aqueous phase 320g is proceeded in the there-necked flask of 1000ml, start stirring, be warming up to 75 DEG C, stirring
The oil phase stirred, more than 800 turns, is then added in there-necked flask, before becoming viscous etc. emulsion, then drips 160g by speed
Aqueous phase is in flask, and finally dropping initiator is in flask, after polyreaction, mixed liquor is poured into big politef square plate
In, close the lid, put in 97 DEG C of baking ovens 0.5 hour, after forming and hardening, take out extruding and washing, then take in baking oven
Face is dried.
Two, product test
Prepared by product out there is certain toughness, abscess-size is small, and wettability is strong, and rate of water absorption reaches 7g/ (g*s；Pass through
Scanning electron microscope (SEM) is tested, and the abscess-size of product is 10～30 μm.Its averagely suck ionized water rate be 15.4g/g,
Average absorption salt ratio is 15.3g/g, the artificial urine rate of average suction is 15.3g/g, average artificial blood rate of inhaling is 16.78g/g, halfhour
Water retention, all more than 87%, is suitable for dispersion and stores aqueous fluid, being suitable for hygiene article sector.
Embodiment 5
One, the preparation of strong wettability acrylate foamed materials
(1) preparation oil-based system, weighs Isooctyl acrylate monomer 8.8g, 2-Propenoic acid, 2-methyl-, isooctyl ester 0.8g, ethylene glycol dimethacrylate
Ester 4.8g, hexanediol diacrylate 0.4g, 0.7g vinyl acetate, tween 80 1.3g, stir oil phase stand-by, its
In, Isooctyl acrylate monomer is 11:1 with the mass ratio of 2-Propenoic acid, 2-methyl-, isooctyl ester.
(2) preparation aqueous phase system, weighs calcium nitrate 0.48g, adds water to 480g and makes it dissolve, now, and electrolyte
Mass fraction is 0.1%, stand-by.
(3) preparation initiator phase, weighs Ammonium persulfate. 1.71g, adds water to 10g and make it dissolve, stand-by.
(4) prepared aqueous phase 320g is proceeded in the there-necked flask of 1000ml, start stirring, be warming up to 75 DEG C, stirring
The oil phase stirred, more than 800 turns, is then added in there-necked flask, before becoming viscous etc. emulsion, then drips 160g by speed
Aqueous phase is in flask, and finally dropping initiator is in flask, after polyreaction, mixed liquor is poured into big politef square plate
In, close the lid, put in 97 DEG C of baking ovens 0.5 hour, after forming and hardening, take out extruding and washing, then take in baking oven
Face is dried.
Two, product test
Prepared by product out there is certain toughness, abscess-size is small, has stronger wettability, and rate of water absorption reaches
6.3g/(g*s)；Being tested by scanning electron microscope (SEM), the abscess-size of product is 10～30 μm.It averagely sucks
Ionized water rate is 19.8g/g, average absorption salt ratio is 20.6g/g, the artificial urine rate of average suction is 19.2g/g, average suction artificial blood rate
For 20.8g/g, halfhour water retention, all more than 91%, is suitable for dispersion and stores aqueous fluid, being suitable for hygienic article
Field.
Embodiment 6
One, the preparation of strong wettability acrylate foamed materials
(1) preparation oil-based system, weighs Isooctyl acrylate monomer 8.8g, 2-Propenoic acid, 2-methyl-, isooctyl ester 0.8g, ethylene glycol dimethacrylate
Ester 4.8g, hexanediol diacrylate 0.4g, 0.6g vinyl acetate, tween 80 1.3g, stir oil phase stand-by, its
In, Isooctyl acrylate monomer is 11:1 with the mass ratio of 2-Propenoic acid, 2-methyl-, isooctyl ester.
(2) preparation aqueous phase system, weighs calcium nitrate 0.096g, adds water to 480g and makes it dissolve, now, and electrolyte
Mass fraction is 0.02%, stand-by.
(3) preparation initiator phase, weighs potassium peroxydisulfate 1.37g, adds water to 10g and make it dissolve, stand-by.
(4) prepared aqueous phase 320g is proceeded in the there-necked flask of 1000ml, start stirring, be warming up to 80 DEG C, stirring
The oil phase stirred, more than 800 turns, is then added in there-necked flask, before becoming viscous etc. emulsion, then drips 160g by speed
Aqueous phase is in flask, and finally dropping initiator is in flask, after polyreaction, mixed liquor is poured into big politef square plate
In, close the lid, put in 80 DEG C of baking ovens 1 hour, after forming and hardening, take out extruding and washing, then take inside baking oven
Dry.
Two, product test
Prepared by product out there is certain toughness, abscess-size is small, has stronger wettability, and rate of water absorption reaches
6.1g/(g*s)；Being tested by scanning electron microscope (SEM), the abscess-size of product is 10～30 μm.It averagely sucks
Ionized water rate is 20.7g/g, average absorption salt ratio is 22.0g/g, the artificial urine rate of average suction is 21.7g/g, average suction artificial blood rate
For 24.3g/g, halfhour water retention, all more than 89%, is suitable for dispersion and stores aqueous fluid, being suitable for hygienic article
Field.
Embodiment 7
One, the preparation of strong wettability acrylate foamed materials
(1) preparation oil-based system, weighs lauryl acrylate 11.4g, tripropylene glycol dimethylacrylate 3.0g, tripropylene glycol two
Acrylate 5.8g, 0.3g vinyl acetate, 0.5g acrylic acid, Tween-40 2.0g, stir oil phase stand-by.
(2) preparation aqueous phase system, weighs aluminum chloride 0.48g, adds water to 480g and makes it dissolve, now, and electrolyte
Mass fraction is 0.1%, stand-by.
(3) preparation initiator phase, weighs sodium peroxydisulfate 1.81g, adds water to 10g and make it dissolve, stand-by.
(4) prepared aqueous phase 160g is proceeded in the there-necked flask of 1000ml, start stirring, be warming up to 65 DEG C, stirring
The oil phase stirred, more than 800 turns, is then added in there-necked flask, before becoming viscous etc. emulsion, then by 320g water by speed
The most successively being added drop-wise in flask mutually, finally dropping initiator is in flask, after polyreaction, mixed liquor is poured into big poly-
In tetrafluoroethene square plate, close the lid, put in 85 DEG C of baking ovens 1 hour, after forming and hardening, take out extruding and washing, then
Take and dry inside baking oven.
Two, product test
Prepared by product out there is certain toughness, abscess-size is small, and wettability is strong, and rate of water absorption reaches 6.5g/ (g*s)；
Being tested by scanning electron microscope (SEM), the abscess-size of product is 10～30 μm.It averagely sucks ionized water rate
18.3g/g, average absorption salt ratio are 18.8g/g, the artificial urine rate of average suction is 17.9g/g, average artificial blood rate of inhaling is 20.1g/g,
Halfhour water retention, all more than 86%, is suitable for dispersion and stores aqueous fluid, being suitable for hygiene article sector.
Embodiment 8
One, the preparation of strong wettability acrylate foamed materials
(1) preparation oil-based system, weighs octadecyl methacrylate 9.4g, lauryl methacrylate 3.8g, dipropylene glycol two
Acrylate 1.8g, tripropylene glycol dimethylacrylate 1.4g, 0.5g vinyl acetate, 0.3g acrylic acid, Tween-60 2.5g,
Oil phase is stirred stand-by.
(2) preparation aqueous phase system, weighs aluminum chloride 0.288g, adds water to 480g and makes it dissolve, now, and electrolyte
Mass fraction is 0.06%, stand-by.
(3) preparation initiator phase, weighs Ammonium persulfate. 1.91g, adds water to 10g and make it dissolve, stand-by.
(4) prepared aqueous phase 240g is proceeded in the there-necked flask of 1000ml, start stirring, be warming up to 70 DEG C, stirring
The oil phase stirred, more than 800 turns, is then added in there-necked flask, before becoming viscous etc. emulsion, then drips 240g by speed
Aqueous phase is in flask, and finally dropping initiator is in flask, after polyreaction, mixed liquor is poured into big politef square plate
In, close the lid, put in 90 DEG C of baking ovens 0.5 hour, after forming and hardening, take out extruding and washing, then take in baking oven
Face is dried.
Two, product test
Prepared by product out there is certain toughness, abscess-size is small, and has stronger wettability, and rate of water absorption reaches
6.2g/(g*s)；Being tested by scanning electron microscope (SEM), the abscess-size of product is 10～30 μm.It averagely sucks
Ionized water rate is 19.5g/g, average absorption salt ratio is 18.4g/g, the artificial urine rate of average suction is 17.9g/g, average suction artificial blood rate
For 21.2g/g, halfhour water retention, all more than 84%, is suitable for dispersion and stores aqueous fluid, being suitable for hygienic article
Field.
Embodiment 9
One, the preparation of strong wettability acrylate foamed materials
(1) preparation oil-based system, weighs octadecyl methacrylate 9.4g, lauryl methacrylate 3.8g, dipropylene glycol two
Acrylate 1.8g, tripropylene glycol dimethylacrylate 1.4g, 0.4g vinyl acetate, 0.6g acrylic acid, Tween-60 2.5g,
Oil phase is stirred stand-by.
(2) preparation aqueous phase system, weighs aluminum chloride 0.384g, adds water to 480g and makes it dissolve, now, and electrolyte
Mass fraction is 0.08%, stand-by.
(3) preparation initiator phase, weighs Ammonium persulfate. 1.91g, adds water to 10g and make it dissolve, stand-by.
(4) prepared aqueous phase 240g is proceeded in the there-necked flask of 1000ml, start stirring, be warming up to 70 DEG C, stirring
The oil phase stirred, more than 800 turns, is then added in there-necked flask, before becoming viscous etc. emulsion, then drips 240g by speed
Aqueous phase is in flask, and finally dropping initiator is in flask, after polyreaction, mixed liquor is poured into big politef square plate
In, close the lid, put in 90 DEG C of baking ovens 0.5 hour, after forming and hardening, take out extruding and washing, then take in baking oven
Face is dried.
Two, product test
Prepared by product out there is certain toughness, abscess-size is small, and has stronger wettability, and rate of water absorption reaches
6.9g/(g*s)；Being tested by scanning electron microscope (SEM), the abscess-size of product is 10～30 μm.It averagely sucks
Ionized water rate is 18.5g/g, average absorption salt ratio is 17.2g/g, the artificial urine rate of average suction is 17.6g/g, average suction artificial blood rate
For 21.4g/g, halfhour water retention, all more than 88%, is suitable for dispersion and stores aqueous fluid, being suitable for hygienic article
Field.
Comparative example 1
One, the preparation of strong wettability acrylate foamed materials
(1) preparation oil-based system, weighs Isooctyl acrylate monomer 7.2g, 2-Propenoic acid, 2-methyl-, isooctyl ester 0.8g, ethylene glycol dimethacrylate
Ester 4.8g, hexanediol diacrylate 0.4g, tween 80 1.3g, stir oil phase stand-by, wherein, and Isooctyl acrylate monomer
It is 9:1 with the mass ratio of 2-Propenoic acid, 2-methyl-, isooctyl ester.
(2) preparation aqueous phase system, weighs calcium chloride 0.096g, adds water to 480g and makes it dissolve, now, and electrolyte
Mass fraction is 0.02%, stand-by.
(3) preparation initiator phase, weighs Ammonium persulfate. 1.71g, adds water to 10g and make it dissolve, stand-by.
(4) prepared aqueous phase 320g is proceeded in the there-necked flask of 1000ml, start stirring, be warming up to 75 DEG C, stirring
The oil phase stirred, more than 800 turns, is then added in there-necked flask, before becoming viscous etc. emulsion, then drips 160g by speed
Aqueous phase is in flask, and finally dropping initiator is in flask, after polyreaction, mixed liquor is poured into big politef square plate
In, close the lid, put in 97 DEG C of baking ovens 0.5 hour, after forming and hardening, take out extruding and washing, then take in baking oven
Face is dried.
Two, product test
Prepared by product out there is certain toughness, abscess-size is small, and wettability is more weak, and rate of water absorption only has 1.7g/ (g*s)；
Being tested by scanning electron microscope (SEM), the abscess-size of product is 10～30 μm.It averagely sucks ionized water rate
18.8g/g, average absorption salt ratio are 19.8g/g, the artificial urine rate of average suction is 24.0g/g, average artificial blood rate of inhaling is 19.9g/g,
Halfhour water retention, more than 85%, is not suitable for dispersion and stores aqueous fluid, not being suitable for hygiene article sector.
Comparative example 2
One, the preparation of strong wettability acrylate foamed materials
(1) preparation oil-based system, weighs Isooctyl acrylate monomer 7.2g, 2-Propenoic acid, 2-methyl-, isooctyl ester 0.8g, ethylene glycol dimethacrylate
Ester 4.8g, hexanediol diacrylate 0.4g, 2.5g acrylic acid, tween 80 1.3g, stir oil phase stand-by, wherein,
Isooctyl acrylate monomer is 9:1 with the mass ratio of 2-Propenoic acid, 2-methyl-, isooctyl ester.
(2) preparation aqueous phase system, weighs calcium chloride 0.096g, adds water to 480g and makes it dissolve, now, and electrolyte
Mass fraction is 0.02%, stand-by.
(3) preparation initiator phase, weighs Ammonium persulfate. 1.71g, adds water to 10g and make it dissolve, stand-by.
(4) prepared aqueous phase 320g is proceeded in the there-necked flask of 1000ml, start stirring, be warming up to 75 DEG C, stirring
The oil phase stirred, more than 800 turns, is then added in there-necked flask, before becoming viscous etc. emulsion, then drips 160g by speed
Aqueous phase is in flask, and finally dropping initiator is in flask, after polyreaction, mixed liquor is poured into big politef square plate
In, close the lid, put in 97 DEG C of baking ovens 0.5 hour, after forming and hardening, take out extruding and washing, then take in baking oven
Face is dried.
Two, product test
Prepared by product out there is certain toughness, abscess-size is small, and wettability is more weak, and rate of water absorption only has 2.0g/ (g*s)；；
Being tested by scanning electron microscope (SEM), the abscess-size of product is 10～30 μm.It averagely sucks ionized water rate
17.0g/g, average absorption salt ratio are 16.4g/g, the artificial urine rate of average suction is 18.7g/g, average artificial blood rate of inhaling is 15.8g/g,
Halfhour water retention only has 75%, is not suitable for dispersion and stores aqueous fluid, not being suitable for hygiene article sector.
Comparative example 3
One, the preparation of strong wettability acrylate foamed materials
(1) preparation oil-based system, weighs Isooctyl acrylate monomer 16g, 2-Propenoic acid, 2-methyl-, isooctyl ester 0.8g, ethylene glycol dimethacrylate
Ester 4.8g, hexanediol diacrylate 0.4g, 0.8g acrylic acid, tween 80 1.3g, stir oil phase stand-by, wherein,
Isooctyl acrylate monomer is 20:1 with the mass ratio of 2-Propenoic acid, 2-methyl-, isooctyl ester.
(2) preparation aqueous phase system, weighs calcium chloride 0.096g, adds water to 480g and makes it dissolve, now, and electrolyte
Mass fraction is 0.02%, stand-by.
(3) preparation initiator phase, weighs Ammonium persulfate. 1.71g, adds water to 10g and make it dissolve, stand-by.
(4) being proceeded to by aqueous phase 320g in the there-necked flask of 1000ml, start stirring, be warming up to 75 DEG C, mixing speed exists
More than 800 turns, then the oil phase that stirs is added in there-necked flask, before becoming viscous etc. emulsion, then drip 160g aqueous phase and arrive
In flask, finally dropping initiator is in flask, after polyreaction, mixed liquor is poured in big politef square plate, lid
Upper cover, puts in 97 DEG C of baking ovens 0.5 hour, after forming and hardening, takes out extruding and washing, then takes and dry inside baking oven.
Two, product test
Prepared by product out there is poor toughness and hard and crisp, abscess-size is bigger and skewness, and wettability is more weak,
Water absorption rate only has 2.5g/ (g*s)；Being tested by scanning electron microscope (SEM), the abscess-size of product is more than 100 μm.
Its averagely suck ionized water rate be 11.5g/g, average absorption salt ratio is 12.1g/g, average inhale artificial urine rate and be 8.7g/g, averagely inhale
Artificial blood rate is 7.4g/g, and halfhour water retention only has about 60%, disperses and to store aqueous fluid ability more weak, be not suitable for
For hygiene article sector.
Comparative example 4
One, the preparation of strong wettability acrylate foamed materials
(1) preparation oil-based system, weighs Isooctyl acrylate monomer 7.2g, 2-Propenoic acid, 2-methyl-, isooctyl ester 0.8g, ethylene glycol dimethacrylate
Ester 4.8g, hexanediol diacrylate 0.4g, 0.8g acrylic acid, tween 80 1.3g, stir oil phase stand-by, wherein,
Isooctyl acrylate monomer is 9:1 with the mass ratio of 2-Propenoic acid, 2-methyl-, isooctyl ester.
(2) preparation aqueous phase system, weighs calcium chloride 19.2g, adds water to 480g and makes it dissolve, now, and electrolyte
Mass fraction is 4%, stand-by.
(3) preparation initiator phase, weighs Ammonium persulfate. 1.71g, adds water to 10g and make it dissolve, stand-by.
(4) prepared aqueous phase 320g is proceeded in the there-necked flask of 1000ml, start stirring, be warming up to 75 DEG C, stirring
The oil phase stirred, more than 800 turns, is then added in there-necked flask, before becoming viscous etc. emulsion, then drips 160g by speed
Aqueous phase is in flask, and finally dropping initiator is in flask, after polyreaction, mixed liquor is poured into big politef square plate
In, close the lid, put in 97 DEG C of baking ovens 0.5 hour, after forming and hardening, take out extruding and washing, then take in baking oven
Face is dried.
Two, product test
Prepared by product out there is certain toughness, abscess-size is small, and wettability is relatively strong, but rate of water absorption only has 2.5g/ (g*s)；
Being tested by scanning electron microscope (SEM), the abscess-size of product is 10～30 μm.It averagely sucks ionized water rate
11.8g/g, average absorption salt ratio are 12.8g/g, the artificial urine rate of average suction is 12.9g/g, average artificial blood rate of inhaling is 14.2g/g,
Halfhour water retention only has about 68%, disperses and to store aqueous fluid ability more weak, be not suitable for hygiene article sector.
Comparative example 5
One, the preparation of strong wettability acrylate foamed materials
(1) preparation oil-based system, weighs isodecyl acrylate 16.4g, dipropylene 4.0g, triethylene glycol two
Acrylate 0.8g, 1g vinyl acetate, diglycerol list isostearate 2.0g, stir oil phase stand-by.
(2) preparation aqueous phase system, weighs calcium chloride 17.71g, adds water to 480g and makes it dissolve, now, and electrolyte
Mass fraction is 3.6%, stand-by.
(3) preparation initiator phase, weighs sodium peroxydisulfate 2.11g, adds water to 10g and make it dissolve, stand-by.
(4) prepared aqueous phase 320g is proceeded in the there-necked flask of 1000ml, start stirring, be warming up to 60 DEG C, stirring
The oil phase stirred, more than 800 turns, is then added in there-necked flask, before becoming viscous etc. emulsion, then drips 160g by speed
Aqueous phase is in flask, and finally dropping initiator is in flask, after polyreaction, mixed liquor is poured into big politef square plate
In, close the lid, put in 95 DEG C of baking ovens 0.5 hour, after forming and hardening, take out extruding and washing, then take in baking oven
Face is dried.
Two, product test
Prepared by product out there is certain toughness, abscess-size is small, and wettability is relatively strong, but rate of water absorption only has 1.9g/ (g*s)；
Being tested by scanning electron microscope (SEM), the abscess-size of product is 10～30 μm.It averagely sucks ionized water rate
9.2g/g, average absorption salt ratio are 7.2g/g, the artificial urine rate of average suction is 7.8g/g, average artificial blood rate of inhaling is 7.6g/g, and half is little
Time water retention only have about 75%, disperse and to store aqueous fluid ability more weak, be not suitable for hygiene article sector.
Comparative example 6
One, the preparation of strong wettability acrylate foamed materials
(1) preparation oil-based system, weighs isodecyl acrylate 16.4g, dipropylene 4.0g, triethylene glycol two
Acrylate 0.8g, 1g vinyl acetate, diglycerol list isostearate 2.0g, stir oil phase stand-by.
(2) preparation aqueous phase system, 480g is stand-by in water intaking.
(3) preparation initiator phase, weighs sodium peroxydisulfate 2.11g, adds water to 10g and make it dissolve, stand-by.
(4) prepared aqueous phase 320g is proceeded in the there-necked flask of 1000ml, start stirring, be warming up to 60 DEG C, stirring
The oil phase stirred, more than 800 turns, is then added in there-necked flask, before becoming viscous etc. emulsion, then drips 160g by speed
Aqueous phase is in flask, and finally dropping initiator is in flask, after polyreaction, mixed liquor is poured into big politef square plate
In, close the lid, put in 95 DEG C of baking ovens 0.5 hour, after forming and hardening, take out extruding and washing, then take in baking oven
Face is dried.
Two, product test
Prepared by product out there is poor toughness and hard and crisp, abscess-size is bigger and skewness, wettability relatively by force,
But rate of water absorption only has 2.4g/ (g*s)；Being tested by scanning electron microscope (SEM), the abscess-size of product is 100 μm
Above.Its averagely suck ionized water rate be 4.3g/g, average absorption salt ratio be 4.8g/g, it is average that to inhale artificial urine rate be 4.9g/g, flat
All inhaling artificial blood rate is 4.1g/g, and halfhour water retention only has about 22%, and does not have pliability, it is easy to split,
It is not suitable for dispersion and stores aqueous fluid.
Claims (7)
1. the preparation method of strong wettability acrylate foamed materials, it is characterised in that comprise the steps:
S1. oil-based system is prepared: percentage weighs 25%～95% monofunctional acrylate class monomer, 2%～60% and cross-links
Agent, 1%～10% water-soluble monomer, 1%～15% emulsifier for mixing mixing；
S2. aqueous phase system is prepared: preparation mass fraction is the electrolyte aqueous solution of 0.02%～0.1%；
S3. divide aqueous phase system 2～4 times at 60～80 DEG C to add in oil-based system, stir, final aqueous phase and the volume of oil phase
Ratio is 10～100:1；
S4. in the mixed system of step S3, add water soluble starter carry out emulsion polymerization；
S5. step S4 gained polymerizate is placed in isothermal curing, washing, dehydrate at 80～100 DEG C and i.e. obtains product；
Described monofunctional acrylate class monomer is simple function alkyl acrylate and the mixture of simple function alkyl methacrylate；
Wherein, the mass ratio of described simple function alkyl acrylate and simple function alkyl methacrylate is 9:1；
Described cross-linking agent is one or more in multifunctional alkyl acrylate or multifunctional alkyl methacrylate；
Described water-soluble monomer is acrylic acid and/or vinyl acetate.
The preparation method of strong wettability acrylate foamed materials the most according to claim 1, it is characterised in that described step S1
Consisting of of middle oil-based system: percentage weigh 45%～75% monofunctional acrylate class monomer, 15%～40%
Cross-linking agent, 2%～8% water-soluble monomer, 5%～15% emulsifying agent.
The preparation method of strong wettability acrylate foamed materials the most according to claim 1 and 2, it is characterised in that described electricity
Solve matter be one or more in metal ion compound, the cation of described metal ion compound be potassium ion, sodium ion,
Calcium ion, magnesium ion, aluminium ion, zinc ion or iron ion, anion be chloride ion, nitrate ion, borate ion,
Phosphate anion or carbanion.
The preparation method of strong wettability acrylate foamed materials the most according to claim 3, it is characterised in that metal ionization
Compound is calcium chloride, calcium nitrate, aluminum chloride, aluminum nitrate, magnesium chloride, magnesium nitrate, potassium phosphate, sodium phosphate, potassium borate, boron
Acid sodium, potassium carbonate or sodium carbonate.
The preparation method of strong wettability acrylate foamed materials the most according to claim 4, it is characterised in that described electrolyte
For calcium chloride, calcium nitrate or aluminum chloride.
6. what the preparation method of the strong wettability acrylate foamed materials described in claim 1 to 5 any claim prepared is strong
Wettability acrylate foamed materials.
7. strong wettability acrylate foamed materials application in preparing hygienic article described in claim 6.
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