CN108855016A - A kind of modified non-woven fabric of rapid heavy metal ion adsorption and preparation method thereof - Google Patents
A kind of modified non-woven fabric of rapid heavy metal ion adsorption and preparation method thereof Download PDFInfo
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- CN108855016A CN108855016A CN201811099214.3A CN201811099214A CN108855016A CN 108855016 A CN108855016 A CN 108855016A CN 201811099214 A CN201811099214 A CN 201811099214A CN 108855016 A CN108855016 A CN 108855016A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
- B01J20/265—Synthetic macromolecular compounds modified or post-treated polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/28033—Membrane, sheet, cloth, pad, lamellar or mat
- B01J20/28038—Membranes or mats made from fibers or filaments
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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Abstract
The present invention provides a kind of modified non-woven fabrics of rapid heavy metal ion adsorption comprising matrix and modifying agent, at loaded modified dose of matrix surface;Described matrix includes non-woven cloth, and the modifying agent includes the copolymer of pyrocatechol monomer and polyamines monomer.A kind of modified non-woven fabric and preparation method thereof of rapid heavy metal ion adsorption of the present invention realizes that modified non-woven fabric contact area is big, and heavy metal adsorption amount is high, and absorption quickly and effectively, and has the effect of good reusability;Preparation method is simple and effective, low in cost, it is easy to operate and there are no pollution to the environment, destroy.
Description
Technical field
The invention belongs to chemical engineering of materials fields, more particularly, to a kind of modified non-woven fabric of rapid heavy metal ion adsorption
And preparation method thereof.
Background technique
With Chinese fast industrialization and urbanization, the industries such as plating, metallurgy, process hides, chemical industry have also obtained swift and violent hair
Exhibition, but along with the development of these industries during, largely the waste water containing heavy metal ion is discharged by all means
In environment, the heavy metal burden of environment is increased, serious heavy metal pollution of water body is caused.These heavy metal ion are in biology
It is not easy to be metabolized in chain, easily be bioaccumulation, seriously threaten the existence of the mankind and aquatile.Heavy metal ion in water at present
Processing method mainly have:The methods of chemical precipitation method, electrochemical process, bioanalysis, membrane separation process and absorption method.Wherein, it adsorbs
Method is considered as a kind of method effectively, easy because its is at low cost, accessibility is good, easy to operate, secondary product is few.
The active charcoal of material, humic acids, the mineral substance, high score subclass for doing absorption method and carrying out heavy metal adsorption common at present
Adsorbent, biological species adsorbent, Industry Waste species etc., as silica gel, activated alumina, molecular sieve, resin, fiber, porous media,
Silica, carbon nanotube, magnetic nano-particle, chitosan, clay, zeolite, montmorillonite, orange peel, bark, bean dregs, sawdust,
Rice straw etc..Adsorption capacity gap since the adsorbent species of research are more, but between various adsorbents is larger, the use of material
Also gap is larger for cost.Therefore the selection of adsorbent is the key that absorption problem.
Wherein, fibre crops one kind is renewable, material that can be degradable, is increasingly paid attention to by people.But commonly
Fiber has the shortcomings that the specific surface area time that is small, low to heavy metal ion adsorbed amount, reaching adsorption equilibrium is long.In view of this, mentioning
A kind of non-woven cloth of fibrous material synthesis out, increases contact area, improves adsorbance, shorten time of equilibrium adsorption, can be quick
Heavy metal ion effectively in absorption water, and have and repeat applicability well, become the emphasis of a research.
Summary of the invention
In view of this, the present invention is directed to propose modified non-woven fabric and its preparation side of a kind of rapid heavy metal ion adsorption
Method realizes that modified non-woven fabric contact area is big, and heavy metal adsorption amount is high, and absorption is fast and effective, and reusability is good;Preparation
Method is simple and effective, low in cost, it is easy to operate and there are no pollution to the environment, destroy.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way:
A kind of modified non-woven fabric of rapid heavy metal ion adsorption comprising matrix and modifying agent, it is negative in matrix surface
Carry modifying agent;
Described matrix includes non-woven cloth, and the modifying agent includes the copolymer of pyrocatechol monomer and polyamines monomer;
Preferably, load capacity of the modifying agent on matrix is 1-10wt%.
Preferably, the pyrocatechol monomer includes one of phthalic acid, dopamine, L-3,4 dihydroxyphenylalanine, tannic acid or more
Kind.
Preferably, the polyamines monomer include diethylenetriamine, triethylene tetramine, tetraethylenepentamine, polyethylene polyamine,
Polyethyleneimine it is one or more.
Preferably, the raw material of the non-woven cloth includes one of polypropylene, polyester, nylon or a variety of.
Preferably, a kind of preparation method of the modified non-woven fabric of rapid heavy metal ion adsorption, it is characterised in that:Including
Following steps:
(1) to nonwoven fabric surface cleaning treatment, clean non-woven cloth is obtained;
(2) buffer solution is prepared
(3) pyrocatechol monomer and polyamines monomer are added in buffer solution, are configured to modified solution;
(4) dip loading is carried out to clean non-woven cloth using modified solution, obtains modified non-woven fabric;
(5) modified non-woven fabric is cleaned and dried, obtains the non-woven cloth of rapid heavy metal ion adsorption.
Preferably, in step (2), the buffer solution includes three (methylol) aminomethanes that concentration is 0.01mol/L
Hydrochloride;The pH of its buffer solution is 7.5-9.5.
Preferably, it is 0.1-0.8wt% pyrocatechol monomer and matter that mass fraction is contained in step (3), in modified solution
Amount score is 0.1-0.8wt% polyamines monomer.
Preferably, in step (4), the adding proportion of modified solution and clean non-woven cloth is 50ml:1g‐300ml:
1g。
Preferably, in step (4), the preparation condition of dip loading is to stand dipping 6-24 hours at room temperature.
Preferably, in step (5), the heavy metal ion be copper ion, cadmium ion, lead ion, zinc ion, nickel ion,
Any one in cobalt ions, chromium ion or two or more mixtures.
Compared with the existing technology, the modified non-woven fabric and its system of a kind of rapid heavy metal ion adsorption of the present invention
Preparation Method has the advantage that:
(1) non-woven cloth has big 3D network structure, can increase the contact area with metal ion, improves adsorbance;
(2) it does modifying agent by the polymer of pyrocatechol monomer and polyamines monomer and non-woven cloth load and change
Property, modified non-woven fabric surface has a large amount of-NH2, the very capable functional group of-OH, the chelating such as-NH, by metal from
The chelation of son carries out absorption retention, and function and effect are good, and time of equilibrium adsorption is short;
(3) preparation method directly by the copolymer of pyrocatechol monomer and polyamines monomer do modifying agent to non-woven cloth into
Row is loaded modified, at room temperature by static dipping, compared to carrying out loaded modified method step by step, or carries out single
The method that one catechu class monomer or polyamines monomer charge are modified, the present invention is simple and effective, low in cost, easy to operate, raw
It is high to produce stability, and environment is not destroyed, has good application prospect in heavy metal adsorption field;
(4) type of heavy metal adsorption is more, large amount of adsorption, and adsorption rate is fast.
Specific embodiment
In addition to being defined, technical term used in following embodiment has universal with those skilled in the art of the invention
The identical meanings of understanding.Test reagent used in following embodiment is unless otherwise specified conventional biochemical reagent;It is described
Experimental method is unless otherwise specified conventional method.
Below with reference to embodiment, the present invention will be described in detail.
Embodiment 1
A kind of preparation method of the modified non-woven fabric of rapid heavy metal ion adsorption, specific implementation step are as follows:
(1) by 2g polypropylene nonwoven (grammes per square metre 60g/m2, 295 μm of thickness) and EtOH Sonicate oscillation treatment is used, remove table
The organic impurities in face carries out drying and processing later;
(2) buffer solution is prepared
Compound concentration is three (methylol) aminomethane hydrochloride buffer solutions of 0.01mol/L, pH 8.0;
(3) on the basis of the gross weight of modified solution, the diethylenetriamine of the catechol of 0.2wt%, 0.2wt% are dissolved in
In buffer solution, it is configured to the modified solution that volume is 300ml;
(4) polypropylene nonwoven of step (1) is immersed in modified solution, impregnates 10h, obtains modified non-woven
Cloth;
(5) modified non-woven fabric is cleaned and dried.
Wherein being cleaned and dried in step (5) to modified non-woven fabric, is washed with deionized, and removes described poly- third
Unreacted monomer and homopolymer and impurity on alkene non-woven cloth;Obtain that there is changing for rapid heavy metal ion adsorption after drying
Property non-woven cloth, referred to as product 1.
Embodiment 2
A kind of preparation method of the modified non-woven fabric of rapid heavy metal ion adsorption, specific implementation step are as follows:
(1) by 2g polyester non-woven fabric (grammes per square metre 70g/m2, 395 μm of thickness) and EtOH Sonicate oscillation treatment is used, remove surface
Organic impurities, carry out drying and processing later;
(2) buffer solution is prepared
Compound concentration is three (methylol) aminomethane hydrochloride buffer solutions of 0.01mol/L, pH 8.0;
(3) on the basis of the gross weight of modified solution, the diethylenetriamine of the dopamine of 0.2wt%, 0.4wt% is dissolved in slow
It rushes in solution, is configured to the modified solution that volume is 300ml;
(4) polyester non-woven fabric of step (1) is immersed in modified solution, impregnates for 24 hours, obtains modified non-woven fabric;
(5) modified non-woven fabric is cleaned and dried.
Wherein modified non-woven fabric is cleaned and dried in step (5), is washed with deionized, it is non-to remove the polyester
Unreacted monomer and homopolymer and impurity in woven cloths;Obtain having the modification of rapid heavy metal ion adsorption non-after drying
Woven cloths, referred to as product 2.
Embodiment 3
A kind of preparation method of the modified non-woven fabric of rapid heavy metal ion adsorption, specific implementation step are as follows:
(1) by 2g nylon non-woven cloth (grammes per square metre 60g/m2, 255 μm of thickness) and EtOH Sonicate oscillation treatment is used, remove surface
Organic impurities, carry out drying and processing later;
(2) buffer solution is prepared
Compound concentration is three (methylol) aminomethane hydrochloride buffer solutions of 0.01mol/L, pH 8.5;
(3) on the basis of the gross weight of modified solution, the polyethyleneimine of the dopamine of 0.4wt%, 0.8wt% is dissolved in slow
It rushes in solution, is configured to the modified solution that volume is 300ml;
(4) the nylon non-woven cloth of step (1) is immersed in modified solution, impregnates for 24 hours, obtains modified non-woven fabric;
(5) modified non-woven fabric is cleaned and dried.
Wherein modified non-woven fabric is cleaned and dried in step (5), is washed with deionized, it is non-to remove the nylon
Unreacted monomer and homopolymer and impurity in woven cloths;Obtain having the modification of rapid heavy metal ion adsorption non-after drying
Woven cloths, referred to as product 3.
Embodiment 4
A kind of preparation method of the modified non-woven fabric of rapid heavy metal ion adsorption, specific implementation step are as follows:
(1) by 2g polypropylene nonwoven (grammes per square metre 70g/m2, 310 μm of thickness) and EtOH Sonicate oscillation treatment is used, remove table
The organic impurities in face carries out drying and processing later;
(2) buffer solution is prepared
Compound concentration is three (methylol) aminomethane hydrochloride buffer solutions of 0.01mol/L, pH 8.0;
(3) on the basis of the gross weight of modified solution, the diethylenetriamine of the catechol of 0.2wt%, 0.8wt% are dissolved in
In buffer solution, it is configured to the modified solution that volume is 300ml;
(4) polypropylene nonwoven of step (1) is immersed in modified solution, impregnates 10h, obtains modified non-woven
Cloth;
(5) modified non-woven fabric is cleaned and dried.
The modified non-woven fabric in step (4) is taken out, is washed with deionized, removes on the polypropylene nonwoven not
The monomer and homopolymer and impurity of reaction;The modified non-woven fabric with rapid heavy metal ion adsorption is obtained after drying, is claimed
For product 4.
Reference examples 1
(1) by two pieces of 2g polypropylene nonwoven (grammes per square metre 60g/m2, 295 μm of thickness) and EtOH Sonicate oscillation treatment is used, it removes
The organic impurities on surface is removed, carries out drying and processing later;
(2) buffer solution is prepared
Compound concentration is three (methylol) aminomethane hydrochloride buffer solutions of 0.01mol/L, pH 8.0;
(3) on the basis of the gross weight of modified solution, the dopamine of the catechol of 0.2wt%, 0.2wt% is dissolved in buffering
In solution, it is configured to the modified solution that volume is 300ml respectively;
(4) polypropylene nonwoven of step (1) is separately immersed in the modified solution dissolved with catechol and dopamine
In, 10h is impregnated, modified non-woven fabric is obtained;
(5) modified non-woven fabric is cleaned and dried.
Wherein the modified non-woven fabric in step (5) is cleaned and dried, and is washed with deionized, is removed the polypropylene
Unreacted monomer and homopolymer and impurity on non-woven cloth;Modified non-woven fabric is obtained after drying, will be soaked in adjacent benzene two
Modified non-woven fabric in phenol solution is known as product 5, and the modified non-woven fabric being soaked in dopamine solution is known as product 6;
Reference examples 2
(1) by two pieces of 2g polypropylene nonwoven (grammes per square metre 60g/m2, 295 μm of thickness) and EtOH Sonicate oscillation treatment is used, it removes
The organic impurities on surface is removed, carries out drying and processing later;
(2) buffer solution is prepared
Compound concentration is three (methylol) aminomethane hydrochloride buffer solutions of 0.01mol/L, pH 8.0;
(3) on the basis of the gross weight of modified solution, the dopamine of the catechol of 0.2wt%, 0.2wt% is dissolved in buffering
In solution, it is configured to the modified solution that volume is 300ml respectively;
(4) polypropylene nonwoven of step (1) is separately immersed in the modified solution dissolved with catechol and dopamine
In, 10h is impregnated, modified non-woven fabric is obtained;
(5) modified non-woven fabric is cleaned and dried;
Wherein modified non-woven fabric is cleaned and dried in step (5), is washed with deionized, removes the polypropylene
Unreacted monomer and homopolymer and impurity on non-woven cloth;Modified non-woven fabric is obtained after drying,
(6) on the basis of the gross weight of modified solution, the polyethylenimine solution 300ml of two parts of 0.2wt% is prepared, solvent is
Above-mentioned buffer solution, and the modified non-woven fabric in step (5) is separately immersed in the solution, soaking time 10h is obtained
Modified non-woven fabric;
(7) modified non-woven fabric is cleaned and dried.
Wherein modified non-woven fabric is cleaned and dried in step (7), is washed with deionized, removes the polypropylene
Unreacted monomer and homopolymer and impurity on non-woven cloth;Modified non-woven fabric is obtained after drying, will impregnate adjacent benzene two
The modified non-woven fabric of phenol solution is known as product 7, and the modified non-woven fabric for impregnating dopamine solution is known as product 8;
Adsorb heavy metal experimental procedure
One, to the measurement of heavy metal saturated extent of adsorption
The said goods 1-8 (quality 0.1g) is weighed respectively, is added separately to a series of lead ion of various concentrations of 200ml
In the mixed solution of copper ion, constant temperature oscillation is adsorbed at pH=4.5 and 25 DEG C, and adsorption time 2h takes after absorption
Adsorbent material out carries out remaining lead ion and copper ion concentration using inductive coupling plasma emission spectrograph (ICP)
Measurement, is calculated the product to the saturated extent of adsorption of lead ion and copper ion mixed solution according to adsorption isotherm.
Two, to the measurement of heavy metal adsorption rate
The said goods 1-8 (quality 0.1g) is weighed respectively, is added separately to the lead ion that 200ml concentration is 100mg/L
In the mixed solution of copper ion, constant temperature oscillation is adsorbed at pH=4.5 and 25 DEG C, in adsorption process, when to different absorption
Between mixed solution be sampled, adsorption time 2h, after absorption use inductive coupling plasma emission spectrograph
(ICP) content of lead ion and copper ion in a series of sample of different adsorption times is measured, according to absorption power
It learns curve and calculates the product to the rate of adsorption of lead ion and copper ion mixed solution.
Three, the measurement of number is reused to product
The said goods 1-8 (quality 0.1g) is weighed respectively, is added separately to the lead ion that 200ml concentration is 100mg/L
In the mixed solution of copper ion, constant temperature oscillation adsorbs 2h at pH=4.5 and 25 DEG C, takes out adsorbent material after absorption,
Using inductive coupling plasma emission spectrograph (ICP) in surplus solution lead ion and copper ion concentration measure,
The adsorbent material taken out after absorption is washed with distilled water three times after washing away the heavy metal of enrichment with the dilute hydrochloric acid of 0.1mol/L,
Then drying repeats aforesaid operations again, until recording the production when adsorbance of the product is lower than initial saturated extent of adsorption 95%
The reuse number of product.
1 the said goods of table adsorb heavy metal energy data summarization
The copolymer of pyrocatechol monomer and polyamines monomer as modifying agent the load capacity on matrix be in 1-10% it
Between, can have high adsorbance, the fast rate of adsorption to heavy metal ion, and reach and repeatedly use effect;
The copolymer of pyrocatechol monomer and polyamines monomer loads on matrix as modifying agent, compared to pyrocatechol
Monomer and polyamines monomer load or single load two ways, identical load time, catechu on matrix step by step
The copolymer load capacity of phenolic monomers and polyamines monomer is high, adsorbance, the rate of adsorption and reuses number and is apparently higher than point
Step load or single load two ways.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of modified non-woven fabric of rapid heavy metal ion adsorption, it is characterised in that:Including matrix and modifying agent, in matrix
Area load modifying agent;
Described matrix includes non-woven cloth, and the modifying agent includes the copolymer of pyrocatechol monomer and polyamines monomer;It is preferred that
, load capacity of the modifying agent on matrix is 1-10wt%.
2. a kind of modified non-woven fabric of rapid heavy metal ion adsorption according to claim 1, it is characterised in that:It is described
Pyrocatechol monomer includes one of phthalic acid, dopamine, L-3,4 dihydroxyphenylalanine, tannic acid or a variety of.
3. a kind of modified non-woven fabric of rapid heavy metal ion adsorption according to claim 1, it is characterised in that:It is described
Polyamines monomer include diethylenetriamine, triethylene tetramine, tetraethylenepentamine, polyethylene polyamine, polyethyleneimine one kind or
It is a variety of.
4. a kind of modified non-woven fabric of rapid heavy metal ion adsorption according to claim 1, it is characterised in that:It is described
The raw material of non-woven cloth includes one of polypropylene, polyester, nylon or a variety of.
5. a kind of preparation side of the modified non-woven fabric of rapid heavy metal ion adsorption according to claim 1-4
Method, it is characterised in that:Include the following steps:
(1) to nonwoven fabric surface cleaning treatment, clean non-woven cloth is obtained;
(2) buffer solution is prepared;
(3) pyrocatechol monomer and polyamines monomer are added in buffer solution, are configured to modified solution;
(4) dip loading is carried out to clean non-woven cloth using modified solution, obtains modified non-woven fabric;
(5) modified non-woven fabric is cleaned and dried, obtains the non-woven cloth of rapid heavy metal ion adsorption.
6. a kind of preparation method of the modified non-woven fabric of rapid heavy metal ion adsorption according to claim 5, special
Sign is:In step (2), the buffer solution includes three (methylol) aminomethane hydrochlorides that concentration is 0.01mol/L;Its
The pH of buffer solution is 7.5-9.5.
7. a kind of preparation method of the modified non-woven fabric of rapid heavy metal ion adsorption according to claim 5, special
Sign is:It containing mass fraction is 0.1-0.8wt% pyrocatechol monomer and mass fraction is in modified solution in step (3)
0.1-0.8wt% polyamines monomer.
8. a kind of preparation method of the modified non-woven fabric of rapid heavy metal ion adsorption according to claim 5, special
Sign is:In step (4), the adding proportion of modified solution and clean non-woven cloth is 50ml:1g‐300ml:1g.
9. a kind of preparation method of the modified non-woven fabric of rapid heavy metal ion adsorption according to claim 5, special
Sign is:In step (4), the preparation condition of dip loading is to stand dipping 6-24 hours at room temperature.
10. a kind of preparation method of the modified non-woven fabric of rapid heavy metal ion adsorption according to claim 5, special
Sign is:In step (5), the heavy metal ion is copper ion, cadmium ion, lead ion, zinc ion, nickel ion, cobalt ions, chromium
Any one in ion or two or more mixtures.
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Publication number | Priority date | Publication date | Assignee | Title |
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CN113880182A (en) * | 2021-09-26 | 2022-01-04 | 宁波方太厨具有限公司 | Preparation method of modified activated carbon filter element |
CN114717844A (en) * | 2022-03-14 | 2022-07-08 | 河北科技大学 | Functional modification method of melt-blown nonwoven material |
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