CN108677384A - A kind of melt-blown non-woven composite material and preparation method of horizontal branch structure - Google Patents
A kind of melt-blown non-woven composite material and preparation method of horizontal branch structure Download PDFInfo
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- CN108677384A CN108677384A CN201810530177.0A CN201810530177A CN108677384A CN 108677384 A CN108677384 A CN 108677384A CN 201810530177 A CN201810530177 A CN 201810530177A CN 108677384 A CN108677384 A CN 108677384A
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- 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
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
-
- 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
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/005—Synthetic yarns or filaments
- D04H3/007—Addition polymers
-
- 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
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
- D04H3/147—Composite yarns or filaments
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Nonwoven Fabrics (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Woven Fabrics (AREA)
Abstract
The invention discloses a kind of melt-blown non-woven composite material and preparation methods of horizontal branch structure, meltblown fibers body includes two kinds of thermoplastic polymers of polyethylene glycol and polypropylene, the composite construction that the meltblown fibers body of the present invention is distributed by 800 nm or less, 800 2 000 nm and 2000 nm three of the above diameters, and 800 nm fibers below are overlapped between 800 2 000 nm and 2000 nm or more fibers, the horizontal branch shape network of tertiary structure is formed, 800nm fiber numbers below are 1.8 4.2 times of 2000 nm or more fiber numbers.The present invention adds polyvinyl alcohol in polypropylene and carries out blending and modifying, and the melt-blown non-woven composite material of horizontal branch structure is formed based on melt-blown non-woven forming technique;Have the characteristics that fibre diameter is thin, porosity is high, density is small.
Description
Technical field
The present invention relates to non-woven composite fields, and it is compound to particularly relate to a kind of melt-blown non-woven of horizontal branch structure
Material and preparation method thereof.
Background technology
Melt-blown micro fibre non-woven material is three-dimensional netted porous non-woven material made of being connected with each other by superfine fibre
Material, larger specific surface area and fine and close hole impart its excellent shielding and separation property so that melt-blown micro fibre
Non-woven material is being filtered and is being detached(Such as mask, air purifier), liquid transmission(Women and children's absorbent article, oil suction
Material etc.)And the energy(Battery diaphragm etc.)Equal fields have a wide range of applications, and are generally acknowledged at present economic, practical type superfine fibres
Material.It is ultra-fine in melt-blown to be heavily dependent on continuous fluid in the unique application in these fields for melt-blown micro fibre material
Free-flowing in interfiber pore, therefore, the structure design of melt-blown micro fibre non-woven material just become expansion melt-blown
The key and core of superfine fibre non-woven material application field.
Melt-blown non-woven is in health care currently, can make medical treatment using melt-blow nonwoven and other materials are compound and defend
Raw articles for use.Common fusion spray cloth and spinning building are complex as SMS, SMMS etc..Spinning building mainly makes Compound Fabric have enough strengths, and
Fusion spray cloth then prevents the intrusion human body such as blood, soiling solution with bacterium or virus.There is horizontal branch using produced by the present invention
The melt-blown non-woven composite material of structure substantially improves the horizontal proliferation performance of liquid so that liquid in the horizontal direction along
The fiber of hierarchical structure transmits.The compound of fusion spray cloth and spinning building is this method reduced, reduces cost, and can effectively prevent
Ooze intrusion human body under the germy soiling solution of stop-band, improve fusion spray cloth medical and hygiene article service efficiency.
Invention content
The present invention proposes a kind of melt-blown non-woven composite material and preparation method of horizontal branch structure, passes through PEG/PP
Blending and modifying melt blown technology obtains the number density of distribution of fiber diameters and different-diameter fiber in melt-blown non-woven composite material
Regulation and control, and then improve horizontal proliferation and the strainability etc. of liquid.Solves the structure feature pair of fusion spray cloth in the prior art
The affecting laws problem of liquid transfer properties.The melt-blown non-woven with three-level network branched structure is made using melt-blown process
Cloth so that the horizontal branch structure diffusion transport that liquid forms on cloth surface along the fiber of different fineness substantially increases liquid
The problem of horizontal proliferation performance of body.
The technical proposal of the invention is realized in this way:
The preparation method of the melt-blown non-woven composite material of horizontal branch structure includes the following steps:
(1)Polyethylene glycol and polypropylene are carried out granulation is blended, forms blended slice:
(2)By step(1)The slice of middle formation is dried:
(3)By step(2)Slice after drying passes through melt-blown process, forms non-woven material, obtains a kind of horizontal branch structure
Melt-blown non-woven composite material.
It refers to that the polyethylene glycol of 5%-30% is heated to 80-90 DEG C of formation melt first that further blending, which is granulated, hereafter
The polypropylene chip of 70%-95% is mixed into polyethylene glycol melt and carries out uniform stirring, cooling formation is total during stirring
Mixed slice;Preferred mode of heating is electrical heating, and preferred stirring technique is mechanical stirring, and preferred blender is three pieces whirlpool
It is wheeled, preferred rotating speed 200-800r/min;Preferred cooling rate is 0.6-1.6 DEG C per minute.
Further polyethylene glycol and polyacrylic mass percent are:Polypropylene 70%-95%, polyethylene glycol 5%-30%;
The molecular weight of the polypropylene melt index ranging from 1000g/10min-1800g/10min, the polyethylene glycol are 4000-
12000。
Further drying refers to that blended slice is put into temperature is 65-75 DEG C, vacuum degree -0.1Mpa-0.07Mpa rings
Under border, dry 60-90min.
Further melt-blown process refers to that the blended slice after drying is sent into screw extruder, forms polymer melt, this
It by being sent into spinning die head after filter and metering pump, and is squeezed out through spinneret orifice, horizontal point is formed by high velocity, hot air drawing-off
Branch structure melt-blown non-woven composite material;It is characterized in that the draw ratio of screw rod is 30:1, screw rod feeding mouth regional temperature is 11-
28 DEG C, preferred spinning die head temperature is 245-275 DEG C, and preferred die head orifice diameter is 0.04-0.25mm, preferred high
Speed heat air draft air gap is 0.35-0.75mm, and preferred high velocity, hot air wind pressure is 0.04-0.18Mpa, preferred high speed heat
Air wind pressure temperature is 245-275 DEG C.
A kind of further diameter of the melt-blown non-woven composite fiber of horizontal branch structure be distributed as 800 nm with
Under, 800-2000 nm and 2000 nm or more;The fiber number of three kinds of distributions is in terms of 100 parts, wherein 800nm fiber counts below
Amount is 1.8-4.2 times of 2000nm or more fiber numbers, and surplus is the fiber of a diameter of 800-2000nm.
The beneficial effects of the present invention are:
1, design principle of the invention is to utilize polyethylene glycol(PEG)And polypropylene(PP)The difference of compatibility, and based on molten
Spray spinning technique prepares the melt-blown non-woven composite material of fibre fineness and fibre fineness distribution horizon adjustable branched structure, into
And accelerates the horizontal proliferation of liquid and improve filter efficiency.
2, the present invention utilizes bionic principle, imitates vein structure, and it is non-that the melt-blown with three-level branching networks structure has been made
Weaving composite material, and probed into affecting laws of the structure feature to liquid transfer properties.It is utilized with the prior art hydrophilic whole
The method of reason improves liquid level transmission performance and compares, and present invention process flow is simple, simple in structure, and substantially increases liquid
The horizontal proliferation performance and filter efficiency of body.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is that the horizontal proliferation performance of embodiment 1 carries out test chart.
Fig. 3 is that the horizontal proliferation performance of embodiment 2 carries out test chart.
Fig. 4 is that the horizontal proliferation performance of embodiment 3 carries out test chart.
Fig. 5 is that the horizontal proliferation performance of embodiment 4 carries out test chart.
Specific implementation mode
Below in conjunction with the embodiment of the present invention, technical scheme of the present invention is clearly and completely described, it is clear that institute
The embodiment of description is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention,
The every other embodiment that those of ordinary skill in the art are obtained under the premise of not making the creative labor, belongs to this hair
The range of bright protection.
Embodiment 1
A kind of preparation method of the melt-blown non-woven composite material of horizontal branch structure is present embodiments provided, it is specific as follows:
8% polyethylene glycol is heated to 80 DEG C of formation melts first, the molecular weight of polyethylene glycol used is 4000, hereafter will
92% polypropylene chip is mixed into polyethylene glycol melt and carries out uniform stirring, and cooling down during stirring forms blended slice,
Polyacrylic melt index used is 1500 g/10min;Then it is 70 DEG C blended slice to be put into temperature, vacuum degree
Under 0.05Mpa environment, dry 70min;Blended slice after drying is sent into screw extruder, forms polymer melt, hereafter
It is sent into spinning die head after filter and metering pump, and is squeezed out through spinneret orifice, horizontal branch is formed by high velocity, hot air drawing-off
Structure melt-blown non-woven composite material.The draw ratio of screw rod is 30:1, screw rod feeding mouth regional temperature is 20 DEG C, spinning die head temperature
Degree is 245 DEG C, and die head orifice diameter is 0.12mm, and high velocity, hot air drawing-off air gap is 0.5mm, and high velocity, hot air wind pressure is
0.10Mpa, wind pressure temperature are 245 DEG C.
According to relevant criterion GB/T 24218.2-2009《Textile non-woven cloth test method》To the product of the present invention
Horizontal proliferation performance tested, the results are shown in Figure 2, wherein the content of polyethylene glycol be 8%, compared with pure PP, liquid
Horizontal proliferation performance increases substantially.
Embodiment 2
A kind of preparation method of the melt-blown non-woven composite material of horizontal branch structure is present embodiments provided, it is specific as follows:
12% polyethylene glycol is heated to 80 DEG C of formation melts, the molecular weight of polyethylene glycol used is 4000, hereafter by 88%
Polypropylene chip be mixed into polyethylene glycol melt and carry out uniform stirring, during stirring cooling form blended slice, institute
It is 1500 g/10min with polyacrylic melt index;Then it is 70 DEG C blended slice to be put into temperature, vacuum degree 0.05Mpa
Under environment, dry 70min;Blended slice after drying is sent into screw extruder, polymer melt is formed, hereafter through filter
With spinning die head is sent into after metering pump, and squeezed out through spinneret orifice, the melt-blown of horizontal branch structure formed by high velocity, hot air drawing-off
Non-woven composite.The draw ratio of screw rod is 30:1, screw rod feeding mouth regional temperature is 20 DEG C, and spinning die head temperature is 245
DEG C, die head orifice diameter is 0.12mm, and high velocity, hot air drawing-off air gap is 0.5mm, and high velocity, hot air wind pressure is 0.10Mpa,
Wind pressure temperature is 245 DEG C.
According to relevant criterion GB/T 24218.2-2009《Textile non-woven cloth test method》Production to the present invention
The horizontal proliferation performance of product is tested, and the results are shown in Figure 3, and wherein the content of polyethylene glycol is 12%, then 800nm is below
Fiber content increases, and liquid diffusibility can be more preferable.
Embodiment 3
A kind of preparation method of the melt-blown non-woven composite material of horizontal branch structure is present embodiments provided, it is specific as follows:
15% polyethylene glycol is heated to 80 DEG C of formation melts, the molecular weight of polyethylene glycol used is 4000, hereafter by 85%
Polypropylene chip be mixed into polyethylene glycol melt and carry out uniform stirring, during stirring cooling form blended slice, institute
It is 1500 g/10min with polyacrylic melt index;Then it is 70 DEG C blended slice to be put into temperature, vacuum degree 0.05Mpa
Under environment, dry 70min;Blended slice after drying is sent into screw extruder, polymer melt is formed, hereafter through filter
With spinning die head is sent into after metering pump, and squeezed out through spinneret orifice, the melt-blown of horizontal branch structure formed by high velocity, hot air drawing-off
Non-woven composite.The draw ratio of screw rod is 30:1, screw rod feeding mouth regional temperature is 20 DEG C, and spinning die head temperature is 245
DEG C, die head orifice diameter is 0.12mm, and high velocity, hot air drawing-off air gap is 0.5mm, and high velocity, hot air wind pressure is 0.10Mpa,
Wind pressure temperature is 245 DEG C.
According to relevant criterion GB/T 24218.2-2009《Textile non-woven cloth test method》Production to the present invention
The horizontal proliferation performance of product is tested, and the results are shown in Figure 4, and wherein the content of polyethylene glycol is 15%, 800nm fibres below
Dimension hplc is more, and three-level sub-branch network density increases, and liquid diffusibility can improve, and diffusion time is reduced.
Embodiment 4
A kind of preparation method of the melt-blown non-woven composite material of horizontal branch structure is present embodiments provided, it is specific as follows:
20% polyethylene glycol is heated to 80 DEG C of formation melts, the molecular weight of polyethylene glycol used is 4000, hereafter by 80%
Polypropylene chip be mixed into polyethylene glycol melt and carry out uniform stirring, during stirring cooling form blended slice, institute
It is 1500 g/10min with polyacrylic melt index;Then it is 70 DEG C blended slice to be put into temperature, vacuum degree 0.05Mpa
Under environment, dry 70min;Blended slice after drying is sent into screw extruder, polymer melt is formed, hereafter through filter
With spinning die head is sent into after metering pump, and squeezed out through spinneret orifice, the melt-blown of horizontal branch structure formed by high velocity, hot air drawing-off
Non-woven composite.The draw ratio of screw rod is 30:1, screw rod feeding mouth regional temperature is 20 DEG C, and spinning die head temperature is 245
DEG C, die head orifice diameter is 0.12mm, and high velocity, hot air drawing-off air gap is 0.5mm, and high velocity, hot air wind pressure is 0.10Mpa,
Wind pressure temperature is 245 DEG C.
According to relevant criterion GB/T 24218.2-2009《Textile non-woven cloth test method》Production to the present invention
The horizontal proliferation performance of product is tested, and the results are shown in Figure 5, and wherein the content of polyethylene glycol is 20%, and three-level branching networks are close
Degree is lasting to be increased, and liquid diffusion time is reduced, and diffusion improves.
Embodiment 5
A kind of preparation method of the melt-blown non-woven composite material of horizontal branch structure is present embodiments provided, it is specific as follows:
8% polyethylene glycol is heated to 80 DEG C of formation melts, the molecular weight of polyethylene glycol used is 4000, hereafter by 92%
Polypropylene chip is mixed into polyethylene glycol melt and carries out uniform stirring, and cooling down during stirring forms blended slice, used
Polyacrylic melt index is 1500 g/10min;Then it is 70 DEG C blended slice to be put into temperature, vacuum degree 0.05Mpa rings
Under border, dry 70min;Blended slice after drying is sent into screw extruder, forms polymer melt, hereafter through filter and
It is sent into spinning die head after metering pump, and is squeezed out through spinneret orifice, it is non-to be formed the melt-blown of horizontal branch structure by high velocity, hot air drawing-off
Weaving composite material.The draw ratio of screw rod is 30:1, screw rod feeding mouth regional temperature is 20 DEG C, and spinning die head temperature is 255 DEG C,
Die head orifice diameter is 0.12mm, and high velocity, hot air drawing-off air gap is 0.5mm, and high velocity, hot air wind pressure is 0.10Mpa, wind pressure
Temperature is 255 DEG C.
Embodiment 6
A kind of preparation method of the melt-blown non-woven composite material of horizontal branch structure is present embodiments provided, it is specific as follows:
12% polyethylene glycol is heated to 80 DEG C of formation melts, the molecular weight of polyethylene glycol used is 4000, hereafter by 88%
Polypropylene chip be mixed into polyethylene glycol melt and carry out uniform stirring, during stirring cooling form blended slice, institute
It is 1500 g/10min with polyacrylic melt index;Then it is 70 DEG C blended slice to be put into temperature, vacuum degree 0.05Mpa
Under environment, dry 70min;Blended slice after drying is sent into screw extruder, polymer melt is formed, hereafter through filter
With spinning die head is sent into after metering pump, and squeezed out through spinneret orifice, the melt-blown of horizontal branch structure formed by high velocity, hot air drawing-off
Non-woven composite.The draw ratio of screw rod is 30:1, screw rod feeding mouth regional temperature is 20 DEG C, and spinning die head temperature is 255
DEG C, die head orifice diameter is 0.12mm, and high velocity, hot air drawing-off air gap is 0.5mm, and high velocity, hot air wind pressure is 0.10Mpa,
Wind pressure temperature is 255 DEG C.
Embodiment 7
A kind of preparation method of the melt-blown non-woven composite material of horizontal branch structure is present embodiments provided, it is specific as follows:
15% polyethylene glycol is heated to 80 DEG C of formation melts, the molecular weight of polyethylene glycol used is 4000, hereafter by 85%
Polypropylene chip be mixed into polyethylene glycol melt and carry out uniform stirring, during stirring cooling form blended slice, institute
It is 1500 g/10min with polyacrylic melt index;Then it is 70 DEG C blended slice to be put into temperature, vacuum degree 0.05Mpa
Under environment, dry 70min;Blended slice after drying is sent into screw extruder, polymer melt is formed, hereafter through filter
With spinning die head is sent into after metering pump, and squeezed out through spinneret orifice, the melt-blown of horizontal branch structure formed by high velocity, hot air drawing-off
Non-woven composite.The draw ratio of screw rod is 30:1, screw rod feeding mouth regional temperature is 20 DEG C, and spinning die head temperature is 255
DEG C, die head orifice diameter is 0.12mm, and high velocity, hot air drawing-off air gap is 0.5mm, and high velocity, hot air wind pressure is 0.10Mpa,
Wind pressure temperature is 255 DEG C.
Embodiment 8
A kind of preparation method of the melt-blown non-woven composite material of horizontal branch structure is present embodiments provided, it is specific as follows:
5% polyethylene glycol is heated to 80 DEG C of formation melts, the molecular weight of polyethylene glycol used is 12000, hereafter by 95%
Polypropylene chip be mixed into polyethylene glycol melt and carry out uniform stirring, during stirring cooling form blended slice, institute
It is 1800 g/10min with polyacrylic melt index;Then it is 75 DEG C blended slice to be put into temperature, vacuum degree -0.1Mpa
Under environment, dry 90min;Blended slice after drying is sent into screw extruder, polymer melt is formed, hereafter through filter
With spinning die head is sent into after metering pump, and squeezed out through spinneret orifice, the melt-blown of horizontal branch structure formed by high velocity, hot air drawing-off
Non-woven composite.The draw ratio of screw rod is 30:1, screw rod feeding mouth regional temperature is 11 DEG C, and spinning die head temperature is 275
DEG C, die head orifice diameter is 0.04mm, and high velocity, hot air drawing-off air gap is 0. 35mm, and high velocity, hot air wind pressure is
0.04Mpa, wind pressure temperature are 245 DEG C.
Embodiment 9
A kind of preparation method of the melt-blown non-woven composite material of horizontal branch structure is present embodiments provided, it is specific as follows:
30% polyethylene glycol is heated to 90 DEG C of formation melts, the molecular weight of polyethylene glycol used is 8000, hereafter by 70%
Polypropylene chip be mixed into polyethylene glycol melt and carry out uniform stirring, during stirring cooling form blended slice, institute
It is 1000 g/10min with polyacrylic melt index;Then it is 75 DEG C blended slice to be put into temperature, vacuum degree 0.07Mpa
Under environment, dry 60min;Blended slice after drying is sent into screw extruder, polymer melt is formed, hereafter through filter
With spinning die head is sent into after metering pump, and squeezed out through spinneret orifice, the melt-blown of horizontal branch structure formed by high velocity, hot air drawing-off
Non-woven composite.The draw ratio of screw rod is 30:1, screw rod feeding mouth regional temperature is 28 DEG C, and spinning die head temperature is 245
DEG C, die head orifice diameter is 0.25mm, and high velocity, hot air drawing-off air gap is 0. 75mm, and high velocity, hot air wind pressure is
0.18Mpa, wind pressure temperature are 275 DEG C.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (10)
1. a kind of melt-blown non-woven composite material of horizontal branch structure, it is characterised in that:The melt-blown non-woven composite material
Including two kinds of thermoplastic polymers of polyethylene glycol and polypropylene, wherein polyacrylic mass fraction is 70%-95%, polyethylene glycol
Mass fraction is 5%-30%.
2. the melt-blown non-woven composite material of horizontal branch structure as described in claim 1, it is characterised in that:The polypropylene
Melt index ranging from 1000g/10min-1800g/10min, the molecular weight of polyethylene glycol is 4000-12000.
3. the preparation method of the melt-blown non-woven composite material of horizontal branch structure as claimed in claim 1 or 2, feature exist
In including the following steps:
(1)Polyethylene glycol and polypropylene are carried out granulation is blended, forms blended slice;
(2)By step(1)The blended slice of middle formation is dried;
(3)By step(2)Blended slice after drying passes through melt-blown process, forms non-woven material, obtains a kind of horizontal branch
The melt-blown non-woven composite material of structure.
4. the preparation method of the melt-blown non-woven composite material of horizontal branch structure as claimed in claim 3, which is characterized in that
The step(1)It is middle be blended be granulated the specific steps are:The polyethylene glycol that mass fraction is 5%-30% is heated to 80-90 DEG C of shape
At melt, the polypropylene that mass fraction is 70%-95% is then mixed into poly- melt simultaneously uniform stirring, is dropped during stirring
Temperature forms blended slice.
5. the preparation method of the melt-blown non-woven composite material of horizontal branch structure as claimed in claim 4, it is characterised in that:
The mode of heating is electrical heating, and stirring uses mechanical stirrer, and mechanical stirrer is three pieces turbine type, mechanical to stir
The rotating speed 200-800r/min of device.
6. the preparation method of the melt-blown non-woven composite material of horizontal branch structure as claimed in claim 4, it is characterised in that:
The speed of the cooling is 0.6-1.6 DEG C per minute.
7. the preparation method of the melt-blown non-woven composite material of horizontal branch structure as claimed in claim 3, which is characterized in that
The step(2)The concrete operations of middle drying are:It is 65-75 DEG C that blended slice, which is placed in temperature, vacuum degree -0.1Mpa-
Under 0.07Mpa environment, dry 60-90min.
8. the preparation method of the melt-blown non-woven composite material of horizontal branch structure as claimed in claim 3, which is characterized in that
The step(3)The concrete operations of middle melt-blown process are:Blended slice after drying is sent into screw extruder, forms polymer
Then melt is sent into spinning die head after filter and metering pump, and is squeezed out through spinneret orifice, formed by high velocity, hot air drawing-off
Horizontal branch structure melt-blown non-woven composite material.
9. the preparation method of the melt-blown non-woven composite material of horizontal branch structure as claimed in claim 8, it is characterised in that:
The screw slenderness ratio of the screw extruder is 30:1, screw rod feeding mouth regional temperature is 11-28 DEG C;Spinning die head temperature is
245-275 DEG C, spinning die head orifice diameter is 0.04-0.25mm;High velocity, hot air drawing-off air gap is 0.35-0.75mm, high
The wind pressure of speed heat air is 0.04-0.18Mpa, temperature is 245-275 DEG C.
10. such as the melt-blown non-woven composite material of claim 1,2 or 4-9 any one of them horizontal branch structures, feature
It is:The diameter of the melt-blown non-woven Fiber In Composite Material is distributed as 800 nm or less, 800-2 000 nm and 2000 nm
More than;For the fiber number of three kinds of distributions in terms of 100 parts, wherein 800nm fiber numbers below are 2000nm or more fiber numbers
1.8-4.2 times, surplus be a diameter of 800-2000nm fiber.
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CN109326762A (en) * | 2018-10-26 | 2019-02-12 | 中原工学院 | A kind of wet forming battery diaphragm and preparation method thereof that aperture is controllable |
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CN109326762A (en) * | 2018-10-26 | 2019-02-12 | 中原工学院 | A kind of wet forming battery diaphragm and preparation method thereof that aperture is controllable |
CN109326762B (en) * | 2018-10-26 | 2021-11-05 | 中原工学院 | Wet-process forming battery diaphragm with controllable aperture and preparation method thereof |
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