CN104153119B - Melt-blow non-woven material capable of effectively filtering PM 2.5 particles and preparation method thereof - Google Patents
Melt-blow non-woven material capable of effectively filtering PM 2.5 particles and preparation method thereof Download PDFInfo
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- CN104153119B CN104153119B CN201310693171.2A CN201310693171A CN104153119B CN 104153119 B CN104153119 B CN 104153119B CN 201310693171 A CN201310693171 A CN 201310693171A CN 104153119 B CN104153119 B CN 104153119B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000000463 material Substances 0.000 title abstract description 18
- 238000001914 filtration Methods 0.000 title abstract description 8
- 239000002245 particle Substances 0.000 title abstract description 7
- 239000000835 fiber Substances 0.000 claims abstract description 18
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 15
- 239000004743 Polypropylene Substances 0.000 claims abstract description 13
- -1 polypropylene Polymers 0.000 claims abstract description 13
- 229920001155 polypropylene Polymers 0.000 claims abstract description 13
- 239000004750 melt-blown nonwoven Substances 0.000 claims description 52
- 239000007921 spray Substances 0.000 claims description 23
- 239000004744 fabric Substances 0.000 claims description 21
- 230000004927 fusion Effects 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 16
- 230000005855 radiation Effects 0.000 claims description 16
- 150000001875 compounds Chemical class 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 11
- 239000012467 final product Substances 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 150000001336 alkenes Chemical class 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 2
- 238000003860 storage Methods 0.000 abstract description 2
- 239000002033 PVDF binder Substances 0.000 abstract 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000004804 winding Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 239000004745 nonwoven fabric Substances 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 239000010419 fine particle Substances 0.000 description 3
- 239000013618 particulate matter Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 210000002345 respiratory system Anatomy 0.000 description 2
- 208000024172 Cardiovascular disease Diseases 0.000 description 1
- 206010058467 Lung neoplasm malignant Diseases 0.000 description 1
- 208000018569 Respiratory Tract disease Diseases 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 210000003123 bronchiole Anatomy 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- 238000009941 weaving Methods 0.000 description 1
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Abstract
The invention discloses a melt-blow non-woven material capable of effectively filtering PM 2.5 particles, a preparation method and a production device. The melt-blow non-woven material comprises, by weight percentage, 93-97 parts of polypropylene, 3-6 parts of electret master batch and 0.1-1 part of polyvinylidene fluoride. According to the melt-blow non-woven material capable of effectively filtering PM 2.5 particles, the polypropylene, the electret master batch and the polyvinylidene fluoride are compounded, the obtained melt-blow non-woven material is characterized by high porosity, the fiber diameter of smaller than two micrometers, large clogging capacity, high filtering efficiency and low resistance, an electret is good in charge storage performance after electret processing, the charge keeping rate can be above two years, and the electret can be used in a high-temperature and high-humidity environment. The product is environmentally friendly and free of pollution, has the advantages of being long in service life and wide in use range, and is particularly suitable for removing PM 2.5 particles in the air.
Description
Technical field
The invention belongs to meltblown nonwoven technical field is and in particular to a kind of melt-blown nonwoven material of high efficiency filter pm2.5
Material, also relates to a kind of preparation method of meltblown nonwoven of high efficiency filter pm2.5 and a kind of high efficiency filter pm2.5
The process units of meltblown nonwoven.
Background technology
Pm2.5 refers to the particulate matter less than or equal to 2.5 microns for the equivalent aerodynamic, also referred to as fine grained in surrounding air
Thing；It can suspend in atmosphere for a long time；Its aerial content (concentration) is higher, just represents air pollution more serious.Though
So fine particle is the less component of content in earth atmosphere, but it has important shadow to air quality and visibility etc.
Ring.Compared with thicker Atmospheric particulates, fine particle particle diameter is little, rich in substantial amounts of poisonous and harmful substances, and stops in an atmosphere
Stay the time long, fed distance is remote, thus bigger to health and Atomspheric Environmental.Particulate matter diameter is less, enters
The position of respiratory tract is deeper, and the particulate matter of 10 micron diameters is usually deposited at upper respiratory tract, and 2 microns of particles below things can go deep into
To bronchioless and alveolar.Fine particle enters human body to after alveolar, directly affects the ventilatory function of lung, so that body is easily in
Anaerobic condition, can cause cardiovascular diseasess, respiratory tract disease and pulmonary carcinoma.
With the growing interest to pm2.5 for the people, the research of air filting material also has attracted increasing attention.Melt-blown
Non-weaving cloth (non-woven fabrics) is that air filtration uses a kind of more universal material, but, traditional meltblown nonwoven fiber is straight
Footpath is thicker, and filter efficiency is low, and resistance is greatly it is impossible to meet the filtering requirement to pm2.5.
Content of the invention
It is an object of the invention to provide a kind of meltblown nonwoven of high efficiency filter pm2.5, solve existing melt-blown nonwoven material
Material cannot meet the problem of use requirement.
Second object of the present invention is to provide a kind of preparation method of the meltblown nonwoven of high efficiency filter pm2.5.
Third object of the present invention is to provide a kind of process units of the meltblown nonwoven of high efficiency filter pm2.5.
In order to realize object above, the technical solution adopted in the present invention is: a kind of melt-blown nonwoven of high efficiency filter pm2.5
Material, comprises following components in percentage by weight: 93～97 parts of polypropylene, 3～6 parts of electret master batch, Kynoar 0.1～1
Part.
A kind of preparation method of the above-mentioned meltblown nonwoven of high efficiency filter pm2.5, comprises the following steps:
1) take polypropylene, electret master batch, Kynoar mix homogeneously, obtain compound；
2) by step 1) gained compound melt extrudes formation melt, described melt constant temperature in the duct through screw extruder
Insulation, is sprayed by spinneret after metering pump-metered and forms fiber, and described fiber, through hot blast drawing-off, forms molten on lace curtaining
Spraying；
3) by step 2) gained fusion spray cloth carries out infra-red radiation heat treatment successively, high pressure electret is processed, circulating cooling is processed,
Winding, obtains final product.
Step 2) described in screw extruder heating-up temperature be 160～250 DEG C.
Step 2) described in melt holding temperature in the duct be 225～250 DEG C.
Step 2) described in spinneret aperture be 200～300 μm.
Step 2) described in hot blast temperature be 230～245 DEG C, pressure be 0.07～0.09mpa.
Step 3) described in infra-red radiation heat treatment temperature be 70～110 DEG C.
Step 3) described in high pressure electret process voltage be 60,000 volts.
Step 3) described in circulating cooling process temperature be 4 DEG C.
A kind of process units of the meltblown nonwoven of high efficiency filter pm2.5, including screw extruder, filter, metering
Pump, die system, lapper and up- coiler, described screw extruder is connected with filter by the first melt pipe, described mistake
Filter is connected with dosing pump by the second melt pipe, and described dosing pump is connected with die system by the 3rd melt pipe；Institute
State lapper and have and spray fiber the lace curtaining that conveys for the spinneret accepting die system, on described lapper lace curtaining is dorsad
The one side of die system is provided with induced-draught fan；Described up- coiler is used for the fusion spray cloth winding from lapper lace curtaining；Also include red
External radiation device, electret device and chiller；Described infrared radiation device is located at the one side towards die system for the lace curtaining, and edge
Fusion spray cloth moving direction is located at the rear of induced-draught fan；Described electret device, chiller be located between lapper and winder and
Set gradually along fusion spray cloth moving direction.
Non-woven fabrics are added doping inorganic nano electret material by the meltblown nonwoven of the high efficiency filter pm2.5 of the present invention
Electret master batch, by high-pressure electronic line electret, material has the advantages that high filter effect, low flow resistance and save energy；In addition former
Material adds Kynoar, can reduce fibre fineness, improves the loft of non-woven fabrics and charged storage capacity, so that material is had
Long-life, the feature of high dust collecting capability.
The meltblown nonwoven of the high efficiency filter pm2.5 of the present invention, polypropylene is carried out with electret master batch, Kynoar
Compounding, gained meltblown nonwoven has high porosity, fibre diameter is less than 2 μm, dust containing capacity is big, filter efficiency is high, resistance is low
Feature；After processing through electret, electret electric charge storge quality is good, and electric charge conservation rate can reach more than 2 years, can be hot and humid
Use under environment；Product is environment friendly and pollution-free, has the advantages that long service life, range are wide, is especially suitable for degasification
Pm2.5 in body.
The preparation method of the meltblown nonwoven of high efficiency filter pm2.5 of the present invention, sprays using after polymer melt extrusion
Silk, after carry out infra-red radiation, electret process and cooling technique, gained meltblown nonwoven one-shot forming, have high filtration effect
Rate and lower resistance, and electret electric charge conservation rate can reach more than 2 years；This technique adopts infrared radiation heating in flow process simultaneously
Electret afterwards, improves electret effect further, and cooling winding after electret, reduces the deformability of non-woven fabrics, external resistance in control
Stable；Process is simple, easy to operate, suitable large-scale industrial production.
The process units of the meltblown nonwoven of high efficiency filter pm2.5 of the present invention, on the basis of original device, increases
Infrared radiation device, electret device and chiller, for producing the meltblown nonwoven of high efficiency filter pm2.5, realize molten
The spray continuous production of non-woven material and one-shot forming, simple to operate it is easy to Automated condtrol, suitable popularization and application.
Brief description
Fig. 1 is the scanning electron microscope (SEM) photograph of the meltblown nonwoven of embodiment 1 gained high efficiency filter pm2.5；
Fig. 2 is the process units structural representation of the meltblown nonwoven of high efficiency filter pm2.5 of embodiment 1；
Fig. 3 is the scanning electron microscope (SEM) photograph of the meltblown nonwoven of embodiment 2 gained high efficiency filter pm2.5；
Fig. 4 is the scanning electron microscope (SEM) photograph of the meltblown nonwoven of embodiment 3 gained high efficiency filter pm2.5.
Specific embodiment
With reference to specific embodiment, the present invention is further illustrated.
Embodiment 1
The meltblown nonwoven of the high efficiency filter pm2.5 of the present embodiment, comprises following components in percentage by weight: polypropylene
96 parts, 3.8 parts of electret master batch, 0.2 part of Kynoar.
The preparation method of the meltblown nonwoven of high efficiency filter pm2.5 of the present embodiment, comprises the following steps:
1) take polypropylene, electret master batch, Kynoar mix homogeneously, obtain compound；
2) by step 1) gained compound feeds the feed bin of screw extruder, melt extrudes formation through screw extruder molten
Body, five heating region temperature of described screw extruder are respectively set as 160 DEG C, 180 DEG C, 200 DEG C, 220 DEG C, 225 DEG C；
3) the 225 DEG C of constant temperature insulations in the duct of described melt, are sprayed by spinneret after metering pump-metered and form fiber,
The hot blast drawing-off through 230 DEG C, 0.07mpa constant temperature and pressure for the described fiber, forms fusion spray cloth on lace curtaining；
4) by step 3) gained fusion spray cloth carries out the infra-red radiation heat treatment of 70 DEG C of constant temperature, at 60,000 volts of high pressure electrets successively
Reason, then after being circulated cooling treatment at a temperature of 4 DEG C, winding, obtain final product the meltblown nonwoven of high efficiency filter pm2.5.
Scanning electron microscope analysis are made to the meltblown nonwoven of the present embodiment gained high efficiency filter pm2.5, result such as Fig. 1 institute
Show.
The process units of the meltblown nonwoven of high efficiency filter pm2.5 of the present embodiment, as shown in Fig. 2 include screw rod squeeze
Go out machine 1, filter 3, dosing pump 4, die system 5, lapper 8 and up- coiler 13, described screw extruder 1 is provided with feed bin 2,
Screw extruder 1 is connected with filter 3 by the first melt pipe, and described filter 3 passes through the second melt pipe and dosing pump 4
It is connected, described dosing pump 4 is connected with the spinneret in die system 5 by the 3rd melt pipe；The spinneret orifice of described spinneret
Surrounding is equipped with hot-air mouth, and described hot-air mouth is connected with hot air generator through hot-air channel 6；Described lapper 8 have for
Accept the spinneret in die system 5 and spray fiber the lace curtaining 7 conveying, lace curtaining 7 dorsad die system 5 on described lapper 8
One side be provided with induced-draught fan 9；Described up- coiler 13 is used for the fusion spray cloth winding from lapper lace curtaining 7；Also include infrared spoke
Injection device 10, electret device 11 and chiller 12；Described infrared radiation device 10 is located at lace curtaining 7 towards the one of die system 5
Face, and it is located at the rear of induced-draught fan 9 along fusion spray cloth moving direction；Described electret device 11, chiller 12 are located at lapper 8 and
Set gradually between winder 13 and along fusion spray cloth moving direction.
During use, compound enters screw extruder through feed bin, and the melt melt extruding through screw extruder is through filter
Go the removal of impurity, after dosing pump accurate measurement, spray through the spinneret in die system, led by the hot-air flow of constant temperature and pressure
Stretch the air draught effect with induced-draught fan, fusion spray cloth is formed on the lace curtaining of lapper, the fusion spray cloth on lace curtaining is delivered to infra-red radiation
At device, after the infrared radiation heating of steady temperature, fusion spray cloth departs from from lace curtaining, enter electret device through high pressure electret at
After reason, enter back into chiller and be circulated cooling treatment, by up- coiler winding, obtain final product.
Embodiment 2
The meltblown nonwoven of the high efficiency filter pm2.5 of the present embodiment, comprises following components in percentage by weight: polypropylene
95 parts, 4.8 parts of electret master batch, 0.2 part of Kynoar.
The preparation method of the meltblown nonwoven of high efficiency filter pm2.5 of the present embodiment, comprises the following steps:
1) take polypropylene, electret master batch, Kynoar mix homogeneously, obtain compound；
2) by step 1) gained compound feeds the feed bin of screw extruder, melt extrudes formation through screw extruder molten
Body, five heating region temperature of described screw extruder are respectively set as 160 DEG C, 180 DEG C, 200 DEG C, 220 DEG C, 235 DEG C；
3) the 235 DEG C of constant temperature insulations in the duct of described melt, are sprayed by spinneret after metering pump-metered and form fiber,
The hot blast drawing-off through 240 DEG C, 0.08mpa constant temperature and pressure for the described fiber, forms fusion spray cloth on lace curtaining；
4) by step 3) gained fusion spray cloth carries out the infra-red radiation heat treatment of 90 DEG C of constant temperature, at 60,000 volts of high pressure electrets successively
Reason, then after being circulated cooling treatment at a temperature of 4 DEG C, winding, obtain final product the meltblown nonwoven of high efficiency filter pm2.5.
Scanning electron microscope analysis are made to the meltblown nonwoven of the present embodiment gained high efficiency filter pm2.5, result such as Fig. 3 institute
Show.
The process units of the meltblown nonwoven of high efficiency filter pm2.5 of the present embodiment is with embodiment 1.
Embodiment 3
The meltblown nonwoven of the high efficiency filter pm2.5 of the present embodiment, comprises following components in percentage by weight: polypropylene
94 parts, 5.8 parts of electret master batch, 0.2 part of Kynoar.
The preparation method of the meltblown nonwoven of high efficiency filter pm2.5 of the present embodiment, comprises the following steps:
1) take polypropylene, electret master batch, Kynoar mix homogeneously, obtain compound；
2) by step 1) gained compound feeds the feed bin of screw extruder, melt extrudes formation through screw extruder molten
Body, five heating region temperature of described screw extruder are respectively set as 160 DEG C, 180 DEG C, 210 DEG C, 230 DEG C, 245 DEG C；
3) the 245 DEG C of constant temperature insulations in the duct of described melt, are sprayed by spinneret after metering pump-metered and form fiber,
The hot blast drawing-off through 245 DEG C, 0.09mpa constant temperature and pressure for the described fiber, forms fusion spray cloth on lace curtaining；
4) by step 3) gained fusion spray cloth carries out the infra-red radiation heat treatment of 110 DEG C of constant temperature, at 60,000 volts of high pressure electrets successively
Reason, then after being circulated cooling treatment at a temperature of 4 DEG C, winding, obtain final product the meltblown nonwoven of high efficiency filter pm2.5.
Scanning electron microscope analysis are made to the meltblown nonwoven of the present embodiment gained high efficiency filter pm2.5, result such as Fig. 4 institute
Show.
The process units of the meltblown nonwoven of high efficiency filter pm2.5 of the present embodiment is with embodiment 1.
Experimental example
The meltblown nonwoven of embodiment 1～3 gained high efficiency filter pm2.5 is automatically filtered by this experimental example by tsi8130
Material tester test, result is as shown in table 1.
The meltblown nonwoven test result of table 1 embodiment 1～3 gained high efficiency filter pm2.5
| Project | Filter efficiency/% | Resistance/pa |
| Embodiment 1 | 91.50 | 69 |
| Embodiment 2 | 97.10 | 80 |
| Embodiment 3 | 97.50 | 105 |
Note: medium adopts the nacl granule of 0.075 ± 0.02 μm of quantity median particle diameter, tests flow 85l/min.
As it can be seen from table 1 the meltblown nonwoven of embodiment 1～3 gained high efficiency filter pm2.5 has filtration efficiency
Advantage with lower resistance.
Claims (9)
1. a kind of meltblown nonwoven of high efficiency filter pm2.5 it is characterised in that: be grouped into by the group of following weight portion: poly- third
93～97 parts of alkene, 3～6 parts of electret master batch, 0.1～1 part of Kynoar；This meltblown nonwoven is by the side comprising the following steps
Method is prepared from:
1) take polypropylene, electret master batch, Kynoar mix homogeneously, obtain compound；
2) by step 1) gained compound melt extrudes formation melt through screw extruder, and protect in the duct by constant temperature for described melt
Temperature, is sprayed by spinneret after metering pump-metered and forms fiber, described fiber, through hot blast drawing-off, forms melt-blown on lace curtaining
Cloth；
3) by step 2) gained fusion spray cloth carries out infra-red radiation heat treatment successively, high pressure electret is processed, circulating cooling is processed, receive
Volume, obtains final product.
2. a kind of preparation method of the meltblown nonwoven of high efficiency filter pm2.5 it is characterised in that: comprise the following steps:
1) polypropylene 93～97 mass parts, electret master batch 3～6 mass parts, Kynoar 0.1～1 mass parts mix homogeneously are taken,
Obtain compound；
2) by step 1) gained compound melt extrudes formation melt through screw extruder, and protect in the duct by constant temperature for described melt
Temperature, is sprayed by spinneret after metering pump-metered and forms fiber, described fiber, through hot blast drawing-off, forms melt-blown on lace curtaining
Cloth；
3) by step 2) gained fusion spray cloth carries out infra-red radiation heat treatment successively, high pressure electret is processed, circulating cooling is processed, receive
Volume, obtains final product.
3. the meltblown nonwoven of high efficiency filter pm2.5 according to claim 2 preparation method it is characterised in that: step
In rapid 2), the heating-up temperature of described screw extruder is 160～250 DEG C.
4. the meltblown nonwoven of high efficiency filter pm2.5 according to claim 2 preparation method it is characterised in that: step
In rapid 2), described melt holding temperature in the duct is 225～250 DEG C.
5. the meltblown nonwoven of high efficiency filter pm2.5 according to claim 2 preparation method it is characterised in that: step
The aperture of spinneret described in rapid 2) is 200～300 μm.
6. the meltblown nonwoven of high efficiency filter pm2.5 according to claim 2 preparation method it is characterised in that: step
The temperature of hot blast described in rapid 2) is 230～245 DEG C, and pressure is 0.07～0.09mpa.
7. the meltblown nonwoven of high efficiency filter pm2.5 according to claim 2 preparation method it is characterised in that: step
The temperature of infra-red radiation heat treatment described in rapid 3) is 70～110 DEG C.
8. the meltblown nonwoven of high efficiency filter pm2.5 according to claim 2 preparation method it is characterised in that: step
The voltage that high pressure electret described in rapid 3) is processed is 60,000 volts.
9. the meltblown nonwoven of high efficiency filter pm2.5 according to claim 2 preparation method it is characterised in that: step
The temperature that circulating cooling described in rapid 3) is processed is 4 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310693171.2A CN104153119B (en) | 2013-12-16 | 2013-12-16 | Melt-blow non-woven material capable of effectively filtering PM 2.5 particles and preparation method thereof |
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| CN201310693171.2A CN104153119B (en) | 2013-12-16 | 2013-12-16 | Melt-blow non-woven material capable of effectively filtering PM 2.5 particles and preparation method thereof |
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| CN113026207A (en) * | 2021-02-04 | 2021-06-25 | 稳健医疗(武汉)有限公司 | Spray-melting cloth spray-melting production method and production system thereof |
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| CN101905101A (en) * | 2010-07-30 | 2010-12-08 | 杭州电子科技大学 | A kind of preparation method of melt-blown polypropylene electret filter material |
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