CN109589687A - A kind of polylactic acid Static Spinning/acetate fiber needle thorn composite filtering material and preparation method thereof - Google Patents
A kind of polylactic acid Static Spinning/acetate fiber needle thorn composite filtering material and preparation method thereof Download PDFInfo
- Publication number
- CN109589687A CN109589687A CN201811651077.XA CN201811651077A CN109589687A CN 109589687 A CN109589687 A CN 109589687A CN 201811651077 A CN201811651077 A CN 201811651077A CN 109589687 A CN109589687 A CN 109589687A
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- China
- Prior art keywords
- polylactic acid
- spinning
- acetate fiber
- composite filtering
- filtering material
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0015—Electro-spinning characterised by the initial state of the material
- D01D5/003—Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0076—Electro-spinning characterised by the electro-spinning apparatus characterised by the collecting device, e.g. drum, wheel, endless belt, plate or grid
- D01D5/0084—Coating by electro-spinning, i.e. the electro-spun fibres are not removed from the collecting device but remain integral with it, e.g. coating of prostheses
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4374—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece using different kinds of webs, e.g. by layering webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/10—Filtering material manufacturing
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention discloses a kind of polylactic acid Static Spinning/acetate fiber needle thorn composite filtering materials and preparation method thereof, using polylactic acid as raw material, polylactic acid nano fiber is prepared by electrostatic spinning, and it is deposited on the surface of acetate fiber needled punched nonwoven material, the preparation method is as follows: (1), which accurately weighs particles of polylactic acid, is dissolved in the acetone and N that volume ratio is 5:1, the in the mixed solvent of dinethylformamide stirs 2 ~ 4 h, forms electrostatic spinning liquid；(2) 10 ~ 30 min are stood, acetate fiber needle fabric is fixed in electrostatic spinning reception device, electrostatic spinning liquid pours into syringe, spinning head and reception device center is kept to be in same horizontal line, it adjusts flow velocity, receive distance, spinning voltage, after 40 ~ 80 min of spinning, polylactic acid/acetate fiber composite filtering material is formed；(3) in 40 ~ 60 DEG C of baking oven dry to get.The present invention can significantly improve the filter efficiency of needling material, while guarantee lower respiratory resistance, so that the air filting material of efficient low-resistance be made.
Description
Technical field
The invention belongs to filtrate technical fields, and in particular to a kind of polylactic acid Static Spinning/acetate fiber needle thorn composite filtering material
And preparation method thereof.
Background technique
With economic development, environmental problem is increasingly serious.Other than reinforcing the measures such as environmental protection, control pollution sources, most
Effective safeguard procedures are exactly to use air filting material, newborn protective mask, indoor air cleaner etc..It is used on Vehicles Collected from Market
Air filting material mostly use the non-fabrication cloth of melt-blown as its filter layer greatly, however, leading to material due to the limitation of fibre diameter
Expect that strainability is not excellent enough.Meanwhile traditional grade oil melt-blown raw milk polypropylene, polyethylene, polyamide etc. be not due to can
Degradation, the reject product after leading to melt-blown non-woven use can generate secondary pollution, and melt-blown material itself also results in one
Fixed environmental pressure.Therefore it is latent bigger the value of environmental protection and application to be embodied with the good material of biological degradability, strainability
Power.
Polylactic acid (PLA) is used as biodegradable polymers, derives from nature largely existing renewable plant resources,
Can be degradable by Soil Microorganism, be a kind of ideal environment-friendly materials, renewable, biodegradable, low-carbon emission and
The huge advantage of low energy consumption makes it can be widely applied to the fields such as health care health, absorption filtering material, packaging material, also at
For the research hotspot of research institution and enterprise.But the features such as that there is also melt viscosities is big by PLA, and processability is poor.
Therefore, it is improved for the defect of polylactic acid, promotes it in the application prospect of adsorbing domain, reason with higher
By meaning and practical value.
Summary of the invention
For the deficiency of existing issue, the first purpose of the invention is to provide a kind of polylactic acid Static Spinning/acetate fibers
Needle pierces composite filtering material.The present invention passes through polylactic acid quiet using biodegradable acetate fiber needled punched nonwoven material as matrix
Nanofiber is made in electrical spinning method, and is deposited directly to acetate fiber needled punched nonwoven material surface.It, can be significant by compound
The filter efficiency of needling material is improved, while guaranteeing lower respiratory resistance, so that the air filting material of efficient low-resistance be made.
A second object of the present invention is to provide a kind of polylactic acid Static Spinning/acetate fiber needle thorn composite filtering material preparation sides
Method.
The technical solution used to solve the technical problems of the present invention is that:
A kind of polylactic acid Static Spinning/acetate fiber needle thorn composite filtering material is prepared using polylactic acid as raw material by electrostatic spinning
Polylactic acid nano fiber, and be deposited on the surface of acetate fiber needled punched nonwoven material to get.
A kind of preparation method of polylactic acid Static Spinning/acetate fiber needle thorn composite filtering material, includes the following steps:
(1) accurately weigh particles of polylactic acid be dissolved in volume ratio be 5:1 acetone and n,N-Dimethylformamide mixing it is molten
In agent, 2~4h is stirred, forms stable, uniform electrostatic spinning liquid；
(2) 10~30min is stood, acetate fiber needle fabric is fixed in electrostatic spinning reception device, electrostatic
Spinning solution pours into syringe, and spinning head and reception device center is kept be in same horizontal line, adjustment flow velocity, receive apart from,
Spinning voltage after 40~80min of spinning, forms polylactic acid/acetate fiber composite filtering material；
(3) in 40~60 DEG C of baking oven dry to get.
As the optimal technical scheme of the application, in the step (1), the mass fraction of polylactic acid is 5~12%.
As the optimal technical scheme of the application, NaCl is also added in the step (1), the additional amount of NaCl is poly- cream
The 0.01~0.1% of acid.
As the optimal technical scheme of the application, in the step (2), flow velocity 0.5mL/h, spinning voltage 15kV,
Receiving distance is 15~20cm.
Beneficial effect
A kind of polylactic acid Static Spinning provided by the invention/acetate fiber needle thorn composite filtering material and preparation method thereof, and it is existing
Technology is compared, and has the advantages that the present invention, will using biodegradable acetate fiber needled punched nonwoven material as matrix
Nanofiber is made by method of electrostatic spinning in polylactic acid, and is deposited directly to acetate fiber needled punched nonwoven material surface.Pass through
It is compound, the filter efficiency of needling material can be significantly improved, while guaranteeing lower respiratory resistance, so that efficient low-resistance be made
Air filting material.
Specific embodiment
The present invention is described in further details with reference to embodiments.Production is not specified in agents useful for same or instrument and equipment
Manufacturer, it is accordingly to be regarded as the conventional products that can be bought by market.
Embodiment 1:
A kind of polylactic acid Static Spinning/acetate fiber needle thorn composite filtering material is prepared using polylactic acid as raw material by electrostatic spinning
Polylactic acid nano fiber, and be deposited on the surface of acetate fiber needled punched nonwoven material to get.
Above-mentioned polylactic acid Static Spinning/acetate fiber needle thorn composite filtering material preparation method, includes the following steps:
(1) accurately weigh particles of polylactic acid be dissolved in volume ratio be 5:1 acetone and n,N-Dimethylformamide mixing it is molten
In agent, 2h is stirred, forms stable, uniform electrostatic spinning liquid, wherein the mass fraction of polylactic acid is 5%；
(2) 10min is stood, acetate fiber needle fabric is fixed in electrostatic spinning reception device, electrostatic spinning
Liquid pours into syringe, and spinning head and reception device center is kept to be in same horizontal line, and adjustment flow velocity receives distance, spinning
Voltage after spinning 40min, forms polylactic acid/acetate fiber composite filtering material；
(3) it is dried in 40 DEG C of baking oven, wherein flow velocity 0.5mL/h, spinning voltage 15kV, receiving distance is
15cm。
Embodiment 2
A kind of polylactic acid Static Spinning/acetate fiber needle thorn composite filtering material is prepared using polylactic acid as raw material by electrostatic spinning
Polylactic acid nano fiber, and be deposited on the surface of acetate fiber needled punched nonwoven material to get.
Above-mentioned polylactic acid Static Spinning/acetate fiber needle thorn composite filtering material preparation method, includes the following steps:
(1) accurately weigh particles of polylactic acid be dissolved in volume ratio be 5:1 acetone and n,N-Dimethylformamide mixing it is molten
In agent, 0.01% NaCl is added, stirs 3h, forms stable, uniform electrostatic spinning liquid, wherein the mass fraction of polylactic acid
It is 8%.；
(2) 20min is stood, acetate fiber needle fabric is fixed in electrostatic spinning reception device, electrostatic spinning
Liquid pours into syringe, and spinning head and reception device center is kept to be in same horizontal line, and adjustment flow velocity receives distance, spinning
Voltage after spinning 60min, forms polylactic acid/acetate fiber composite filtering material；Wherein, flow velocity 0.5mL/h, spinning voltage are
15kV, receiving distance is 17cm.
(3) in 50 DEG C of baking oven dry to get.
Embodiment 3
A kind of polylactic acid Static Spinning/acetate fiber needle thorn composite filtering material is prepared using polylactic acid as raw material by electrostatic spinning
Polylactic acid nano fiber, and be deposited on the surface of acetate fiber needled punched nonwoven material to get.
Above-mentioned polylactic acid Static Spinning/acetate fiber needle thorn composite filtering material preparation method, includes the following steps:
(1) accurately weigh particles of polylactic acid be dissolved in volume ratio be 5:1 acetone and n,N-Dimethylformamide mixing it is molten
In agent, then NaCl is added, the additional amount of NaCl is the 0.1% of polylactic acid, stirs 4h, stable, uniform electrostatic spinning liquid is formed,
Wherein, the mass fraction of polylactic acid is 12%；
(2) 30min is stood, acetate fiber needle fabric is fixed in electrostatic spinning reception device, electrostatic spinning
Liquid pours into syringe, and spinning head and reception device center is kept to be in same horizontal line, and adjustment flow velocity receives distance, spinning
Voltage after spinning 80min, forms polylactic acid/acetate fiber composite filtering material；Wherein, flow velocity 0.5mL/h, spinning voltage are
15kV, receiving distance is 20cm.
(3) in 60 DEG C of baking oven dry to get.
Performance test
1. porosity test
Porosity refers to the ratio of volume shared by hole and porous material total volume in porous material.Measure Examples 1 to 3
Composite filtering material thickness H.Each composite filtering material is cut into 30*30mm2Sample, and weigh the quality of each sample, it is flat to calculate it
Fang meter Ke weight, according to formula: n=1-WG/ (H* ρ * 103), calculate to obtain its porosity.
2. the measurement of filter efficiency and filtration resistance
As a result as follows:
1. porosity be influence non-woven an important parameter, directly affect filtering material filter efficiency and
Filtration resistance.The thickness of sample and porosity of Examples 1 to 3 are as shown in table 1 below.
The thickness of sample and porosity of 1 Examples 1 to 3 of table
| Project | Blank | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Thickness H/mm | 0.134 | 0.135 | 0.137 | 0.139 |
| Porosity n/% | 90.54 | 90.12 | 89.45 | 89.18 |
As shown in table 1, the thickness of composite filtering material increases, and porosity is reduced.But due to the thickness of acid fiber by polylactic with
Acetate fiber needling material is compared, the ratio very little occupied, so porosity decline is unobvious.
2. filter efficiency and filtration resistance
The filter efficiency of 2 Examples 1 to 3 sample of table
As shown in table 2, composite filtering material is all improved the filter efficiency of the particle of different-grain diameter, especially compared with blank
The particle small to partial size, significant effect.
Protection content of the invention is not limited to above embodiments.Without departing from the spirit and scope of the invention, originally
Field technical staff it is conceivable that variation and advantage be all included in the present invention, and with the attached claims be protection
Range.
Claims (5)
1. a kind of polylactic acid Static Spinning/acetate fiber needle pierces composite filtering material, which is characterized in that using polylactic acid as raw material, by quiet
Electrospun prepares polylactic acid nano fiber, and be deposited on the surface of acetate fiber needled punched nonwoven material to get.
2. polylactic acid Static Spinning described in claim 1/acetate fiber needle thorn composite filtering material preparation method, which is characterized in that
Include the following steps:
(1) in the mixed solvent that particles of polylactic acid is dissolved in the acetone that volume ratio is 5:1 and n,N-Dimethylformamide is accurately weighed,
2 ~ 4 h are stirred, stable, uniform electrostatic spinning liquid is formed；
(2) 10 ~ 30 min are stood, acetate fiber needle fabric are fixed in electrostatic spinning reception device, electrostatic spinning
Liquid pours into syringe, and spinning head and reception device center is kept to be in same horizontal line, and adjustment flow velocity receives distance, spinning
Voltage after 40 ~ 80 min of spinning, forms polylactic acid/acetate fiber composite filtering material；
(3) in 40 ~ 60 DEG C of baking oven dry to get.
3. polylactic acid Static Spinning according to claim 2/acetate fiber needle thorn composite filtering material preparation method, feature exist
In in the step (1), the mass fraction of polylactic acid is 5 ~ 12%.
4. polylactic acid Static Spinning according to claim 2/acetate fiber needle thorn composite filtering material preparation method, feature exist
In also added with NaCl in the step (1), the additional amount of NaCl is the 0.01 ~ 0.1% of polylactic acid.
5. polylactic acid Static Spinning according to claim 2/acetate fiber needle thorn composite filtering material preparation method, feature
It is, in the step (2), flow velocity 0.5mL/h, spinning voltage 15kV, receiving distance is 15 ~ 20 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811651077.XA CN109589687A (en) | 2018-12-31 | 2018-12-31 | A kind of polylactic acid Static Spinning/acetate fiber needle thorn composite filtering material and preparation method thereof |
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| CN201811651077.XA CN109589687A (en) | 2018-12-31 | 2018-12-31 | A kind of polylactic acid Static Spinning/acetate fiber needle thorn composite filtering material and preparation method thereof |
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Cited By (3)
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| CN112301541A (en) * | 2020-10-20 | 2021-02-02 | 西安工程大学 | Easily-degradable reusable efficient non-woven oil absorption material and preparation method thereof |
| CN113005634A (en) * | 2021-02-24 | 2021-06-22 | 李思鹏 | Moisture-absorbing and bacteriostatic spunlace non-woven fabric and preparation method thereof |
| CN113261723A (en) * | 2021-05-29 | 2021-08-17 | 艾姆菲特(上海)健康科技有限公司 | Degradable mask and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112301541A (en) * | 2020-10-20 | 2021-02-02 | 西安工程大学 | Easily-degradable reusable efficient non-woven oil absorption material and preparation method thereof |
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