CN112647189A - Antibacterial melt-blown fabric and preparation process thereof - Google Patents
Antibacterial melt-blown fabric and preparation process thereof Download PDFInfo
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- CN112647189A CN112647189A CN202011570292.4A CN202011570292A CN112647189A CN 112647189 A CN112647189 A CN 112647189A CN 202011570292 A CN202011570292 A CN 202011570292A CN 112647189 A CN112647189 A CN 112647189A
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- antibacterial
- polypropylene
- melt
- nano
- electret
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- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 142
- 239000004744 fabric Substances 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 title description 2
- -1 polypropylene Polymers 0.000 claims abstract description 97
- 239000004743 Polypropylene Substances 0.000 claims abstract description 94
- 229920001155 polypropylene Polymers 0.000 claims abstract description 94
- 239000002245 particle Substances 0.000 claims abstract description 71
- 239000000835 fiber Substances 0.000 claims abstract description 34
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000011787 zinc oxide Substances 0.000 claims abstract description 16
- 229910021392 nanocarbon Inorganic materials 0.000 claims abstract description 12
- 238000002844 melting Methods 0.000 claims description 31
- 230000008018 melting Effects 0.000 claims description 20
- 238000007664 blowing Methods 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 16
- 238000001914 filtration Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 11
- 230000005855 radiation Effects 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 9
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 8
- 238000009987 spinning Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 4
- 238000013329 compounding Methods 0.000 claims description 3
- 230000000845 anti-microbial effect Effects 0.000 claims 5
- 230000003115 biocidal effect Effects 0.000 claims 1
- 238000005406 washing Methods 0.000 abstract description 3
- 238000007667 floating Methods 0.000 description 13
- 239000000463 material Substances 0.000 description 9
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 8
- 229910052709 silver Inorganic materials 0.000 description 6
- 239000004332 silver Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 239000011358 absorbing material Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 241000700605 Viruses Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
Classifications
-
- 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
- D04H1/413—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 containing granules other than absorbent substances
-
- 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
- D04H1/407—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 containing absorbing substances, e.g. activated carbon
-
- 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
- D04H1/4282—Addition polymers
- D04H1/4291—Olefin series
Abstract
The invention discloses an antibacterial melt-blown fabric and a preparation process thereof, wherein the antibacterial melt-blown fabric comprises a polypropylene antibacterial layer, wherein the polypropylene antibacterial layer comprises 1000 parts of polypropylene particles, 15-35 parts of electret master batches and 1-3 parts of nano antibacterial groups according to the mass part ratio, and the nano antibacterial groups comprise nano zinc oxide particles accounting for more than 85% of the mass ratio. The antibacterial melt-blown fabric has high-efficiency antibacterial function, can effectively filter and sterilize, and the nano zinc oxide particles and the nano carbon particles can form a contact type antibacterial layer on a melt-blown fiber body without influencing air circulation or hidden contact trouble. The antibacterial mask can be combined with an electret to improve antibacterial ability, maintain long effective service life, especially meet the requirement of maintaining antibacterial ability after washing, and realize the repeated use of the mask.
Description
Technical Field
The invention relates to an antibacterial melt-blown fabric and a preparation process thereof, belonging to the technical field of functional melt-blown fabrics.
Background
The melt-blown fabric is the most core material of the mask, the melt-blown fabric mainly takes polypropylene as a main raw material, and the fiber diameter can reach 1-5 microns. The superfine fiber with the unique capillary structure increases the number and the surface area of the fiber per unit area, so that the melt-blown fabric has good filtering property, shielding property, heat insulation property and oil absorption property. Can be used in the fields of air and liquid filtering materials, isolating materials, absorbing materials, mask materials, warm-keeping materials, oil absorbing materials, wiping cloth and the like.
In general, the melt-blown fabric is endowed with antibacterial property by adopting an electret, which is a dielectric material with a long-term charge storage function, has the advantages of high efficiency, low flow resistance, antibacterial property, energy conservation and the like, and increases the electrostatic adsorption effect on the basis of ensuring the physical collision barrier effect of the conventional filter material. The electret treatment makes the filter material fiber charged, and combines the characteristic of the melt-blown superfine fiber material being compact, so a large number of electrodes are formed among the charged fibers, the charged fibers can attract most charged particles in the environment like a magnet, and can polarize the uncharged particles, thereby adsorbing some pollutants with smaller particle size, and even the nano-scale substance of virus can also carry out electrostatic adsorption or charge repulsion blocking.
The charge adsorption generated by the electret only meets the requirement of short effective time, is only suitable for disposable products, and cannot be maintained for long time or even meet the requirement of repeated use.
In view of the situation, the chinese patent application publication No. CN111945296A discloses an antibacterial nano silver meltblown for a mask and a preparation process thereof, wherein an antibacterial nano silver layer is formed by spraying an antibacterial coating, so as to realize antibacterial property, the antibacterial nano silver layer can affect the porosity of the meltblown, the airflow is not smooth, the electret on the surface of the fiber can be damaged, in addition, the antibacterial nano silver layer has the possibility of contact of silver ions, the silver ions have the sterilization characteristic, and can kill cells, and the safety of the antibacterial nano silver meltblown for a mask cannot be guaranteed.
The Chinese invention patent of application publication No. CN111945295A discloses a preparation method of high-efficiency antibacterial melt-blown fabric and the prepared high-efficiency antibacterial melt-blown fabric, which is realized by adding antibacterial master batch into melt-blown material, wherein the antibacterial master batch is silver-containing master batch, the silver content is 3%, the grain size of the antibacterial master batch is about 3 μm, the requirement of thermal spray molding of superfine fiber is difficult to meet, and in addition, the silver particles have potential contact safety hazard.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides an antibacterial melt-blown fabric and a preparation process thereof aiming at the problems that the traditional sprayed or mixed protective body has poor safety of silver ions and can not meet the requirement of thermal spraying.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the antibacterial melt-blown fabric comprises a polypropylene antibacterial layer, wherein the polypropylene antibacterial layer comprises 1000 parts of polypropylene particles, 15-35 parts of electret master batches and 1-3 parts of nano antibacterial groups according to the mass part ratio, and the nano antibacterial groups comprise nano zinc oxide particles accounting for more than 85% of the mass ratio.
Preferably, the nano antibacterial group comprises nano zinc oxide particles and nano carbon particles.
Preferably, the polypropylene antibacterial layer is compounded with the polypropylene fiber layer, and the volume porosity of the polypropylene fiber layer is smaller than the volume porosity of the polypropylene antibacterial layer.
The invention also provides a preparation process of the antibacterial melt-blown fabric,
the method is characterized by comprising the following steps:
s1 melting polypropylene particles and electret master batch, adding into nanometer antibacterial group to form uniform mixed melt,
s2, the mixed melt is put into a melt-blowing device for melt filtration and is treated by ultrasonic radiation for melt-blowing spinning cooling to form the polypropylene antibacterial fibrous body,
s3, performing electret treatment on the polypropylene antibacterial fiber body to form a polypropylene antibacterial layer.
Preferably, in the step S2, the degumming operation is performed after the polypropylene antibacterial fiber body is formed by cooling.
Preferably, in step S1, the polypropylene particles and the electret masterbatch are first hot-melted and mixed at a temperature of 222 to 228 ℃, and then the nano-antibacterial groups are put into the mixture for hot-melting and stirring, and the mixture is cooled and sliced for use after being uniformly stirred.
Preferably, in the step S2, the temperature of the feeding section of the melt extrusion is 175 to 190 ℃, the temperature of the melting section is 220 to 225 ℃, the temperature of the homogenizing section is 223 ± 1 ℃, the ultrasonic radiation treatment time is 25 to 30min, and the filtering is 100 to 120 mesh.
Preferably, in the step S3, the electret voltage is 600-800V, and the electret time is 2-3S.
Preferably, the method comprises an S4 compounding step, wherein the polypropylene antibacterial layer and the polypropylene fiber layer are compounded at the outer edge through high frequency to form the antibacterial melt-blown fabric.
The invention has the following beneficial effects:
1. the antibacterial melt-blown fabric has a high-efficiency antibacterial function, can effectively filter and sterilize, and the nano zinc oxide particles and the nano carbon particles can form a contact type antibacterial layer on a melt-blown fiber body, and meanwhile, the air circulation cannot be influenced, and the hidden contact trouble does not exist.
2. The antibacterial mask can be combined with an electret to improve antibacterial ability, maintain long effective service life, especially meet the requirement of maintaining antibacterial ability after washing, and realize the repeated use of the mask.
Detailed Description
The invention provides an antibacterial melt-blown fabric and a preparation process thereof. The technical solutions of the present invention are described in detail below to make them easier to understand and master.
The antibacterial melt-blown fabric comprises a polypropylene antibacterial layer, wherein the polypropylene antibacterial layer comprises 1000 parts of polypropylene particles, 15-35 parts of electret master batches and 1-3 parts of nano antibacterial groups in parts by mass, and the nano antibacterial groups comprise nano zinc oxide particles accounting for more than 85%. The nano antibacterial group comprises nano zinc oxide particles and nano carbon particles.
The novel nano antibacterial group is adopted to endow the antibacterial function, the nano zinc oxide particles have contact safety and relatively stable sterilization effect, and the nano carbon particles can maintain the dryness of the fibers, provide certain air permeability and meet the air permeability requirement of the melt-blown base material.
In a specific embodiment, the polypropylene antibacterial layer is compounded with a polypropylene fiber layer, and the volume porosity of the polypropylene fiber layer is smaller than the volume porosity of the polypropylene antibacterial layer.
The preparation process of the antibacterial melt-blown fabric is detailed and explained as follows:
which comprises the following steps:
and (3) carrying out hot melting on the polypropylene particles and the electret master batches, and putting the polypropylene particles and the electret master batches into a nano antibacterial group to form a uniformly mixed melt.
And putting the mixed melt into a melt-blowing device for melt filtration, and carrying out melt-blowing spinning cooling through ultrasonic radiation treatment to form the polypropylene antibacterial fibrous body. After the polypropylene antibacterial fiber body is formed by cooling, the floating particle removing operation is carried out. The method for removing the floating particles adopts a strong wind mode, namely, strong airflow with the air speed of 25-60 m/s is adopted to remove the floating particles, so that the safety is improved.
And performing electret treatment on the polypropylene antibacterial fiber body to form the polypropylene antibacterial layer.
And finely mixing the polypropylene particles and the electret master batches by hot melting at 222-228 ℃, adding the nano antibacterial groups for hot melting and stirring, uniformly stirring, cooling and slicing for later use. The temperature of a feeding section of the melt extrusion is 175-190 ℃, the temperature of a melting section is 220-225 ℃, the temperature of a homogenizing section is 223 +/-1 ℃, the ultrasonic radiation treatment time is 25-30 min, and the filtering is 100-120 meshes. The electret voltage is 600-800V, and the electret time is 2-3S.
In one embodiment, when the mask base material is used, the polypropylene antibacterial layer and the polypropylene fiber layer are compounded at the outer edge through high frequency to form antibacterial melt-blown cloth, namely, a double-layer structure of the polypropylene antibacterial layer and the polypropylene fiber layer is formed, the polypropylene fiber layer is used as a lining in the attaching direction, the requirements of double-layer protection and contact protection are met, and the mask body can be directly formed.
Example one
The polypropylene antibacterial layer is prepared from 1000 parts of polypropylene particles, 15 parts of electret master batches and 1 part of nano antibacterial groups according to the mass part ratio, wherein the nano antibacterial groups comprise 85% of nano zinc oxide particles and 15% of nano carbon particles.
And (3) carrying out hot melting on the polypropylene particles and the electret master batches, and putting the polypropylene particles and the electret master batches into a nano antibacterial group to form a uniformly mixed melt.
And putting the mixed melt into melt-blowing equipment for melt filtration, carrying out ultrasonic radiation treatment, carrying out melt-blowing spinning cooling to form a polypropylene antibacterial fibrous body, wherein the hot-melting mixing temperature is 223 ℃, putting the polypropylene antibacterial fibrous body into a nano antibacterial group for hot-melting stirring, and the temperature of a feeding section of melt extrusion is 175 ℃, the temperature of a melting section is 220 ℃ and the temperature of a homogenizing section is 223 ℃. After the polypropylene antibacterial fibrous body is formed by cooling, the floating particle removing operation is carried out, and the floating particle removing operation is carried out by adopting strong airflow with the air speed of 25 m/s. And (3) performing electret treatment on the polypropylene antibacterial fiber body to obtain a sample I.
Example two
The polypropylene antibacterial layer is prepared from 1000 parts of polypropylene particles, 35 parts of electret master batches and 3 parts of nano antibacterial groups according to the mass part ratio, wherein the nano antibacterial groups comprise 90% of nano zinc oxide particles and 10% of nano carbon particles.
And (3) carrying out hot melting on the polypropylene particles and the electret master batches, and putting the polypropylene particles and the electret master batches into a nano antibacterial group to form a uniformly mixed melt.
And putting the mixed melt into melt-blowing equipment for melt filtration, carrying out ultrasonic radiation treatment, carrying out melt-blowing spinning cooling to form a polypropylene antibacterial fibrous body, wherein the hot-melting mixing temperature is 225 ℃, putting the mixed melt into a nano antibacterial group for hot-melting stirring, and the temperature of a feeding section of melt extrusion is 190 ℃, the temperature of a melting section is 225 ℃ and the temperature of a homogenizing section is 222 ℃. After the polypropylene antibacterial fibrous body is formed by cooling, the floating particle removing operation is carried out, and the floating particle removing operation is carried out by adopting strong airflow with the air speed of 35 m/s. And (3) performing electret treatment on the polypropylene antibacterial fiber body to obtain a second sample.
EXAMPLE III
The polypropylene antibacterial layer is prepared from 1000 parts of polypropylene particles, 25 parts of electret master batches and 2 parts of nano antibacterial groups according to the mass part ratio, wherein the nano antibacterial groups comprise 95% of nano zinc oxide particles and 5% of nano carbon particles.
And (3) carrying out hot melting on the polypropylene particles and the electret master batches, and putting the polypropylene particles and the electret master batches into a nano antibacterial group to form a uniformly mixed melt.
And putting the mixed melt into melt-blowing equipment for melt filtration, carrying out ultrasonic radiation treatment, carrying out melt-blowing spinning cooling to form a polypropylene antibacterial fibrous body, wherein the hot-melting mixing temperature is 223 ℃, putting the mixed melt into a nano antibacterial group for hot-melting stirring, and the temperature of a feeding section of melt extrusion is 180 ℃, the temperature of a melting section is 225 ℃ and the temperature of a homogenizing section is 224 ℃. After the polypropylene antibacterial fibrous body is formed by cooling, the floating particle removing operation is carried out, and the floating particle removing operation is carried out by adopting strong airflow with the air speed of 45 m/s. And (3) performing electret treatment on the polypropylene antibacterial fiber body to obtain a third sample.
Example four
The polypropylene antibacterial layer is prepared from 1000 parts of polypropylene particles, 30 parts of electret master batches and 2 parts of nano antibacterial groups according to the mass part ratio, wherein the nano antibacterial groups comprise 99% of nano zinc oxide particles and 1% of nano carbon particles.
And (3) carrying out hot melting on the polypropylene particles and the electret master batches, and putting the polypropylene particles and the electret master batches into a nano antibacterial group to form a uniformly mixed melt.
And putting the mixed melt into melt-blowing equipment for melt filtration, carrying out ultrasonic radiation treatment, carrying out melt-blowing spinning cooling to form a polypropylene antibacterial fibrous body, wherein the hot-melting mixing temperature is 223 ℃, putting the polypropylene antibacterial fibrous body into a nano antibacterial group for hot-melting stirring, and the temperature of a feeding section, a melting section and a homogenizing section of the melt extrusion is 178 ℃, 220 ℃ and 223 ℃. After the polypropylene antibacterial fibrous body is formed by cooling, the floating particle removing operation is carried out, and the floating particle removing operation is carried out by adopting strong air flow with the air speed of 55 m/s. And (4) performing electret treatment on the polypropylene antibacterial fiber body to obtain a sample four.
EXAMPLE five
The polypropylene antibacterial layer is prepared from 1000 parts of polypropylene particles, 20 parts of electret master batches and 3 parts of nano antibacterial groups according to the mass part ratio, wherein the nano antibacterial groups comprise 85% of nano zinc oxide particles and 15% of nano carbon particles.
And (3) carrying out hot melting on the polypropylene particles and the electret master batches, and putting the polypropylene particles and the electret master batches into a nano antibacterial group to form a uniformly mixed melt.
And putting the mixed melt into melt-blowing equipment for melt filtration, carrying out ultrasonic radiation treatment, carrying out melt-blowing spinning cooling to form a polypropylene antibacterial fibrous body, wherein the hot-melting mixing temperature is 223 ℃, putting the polypropylene antibacterial fibrous body into a nano antibacterial group for hot-melting stirring, and the feeding section temperature of melt extrusion is 180 ℃, the melting section temperature is 222 ℃, and the homogenizing section temperature is 223 ℃. After the polypropylene antibacterial fibrous body is formed by cooling, the floating particle removing operation is carried out, and the floating particle removing operation is carried out by adopting strong airflow with the air speed of 60 m/s. And (5) performing electret treatment on the polypropylene antibacterial fiber body to obtain a fifth sample.
When the samples I to V are detected, the filtration efficiency/% (85L/min) is over 99, the resistance/Pa is between 50 +/-3, and the bacteriostasis rate is over 99 percent.
And compounding the samples I to V with the polypropylene fiber layer, and then performing circulation of air and bacteriostasis tests, wherein the requirements of GB/T20944.3-2008 standard are met.
Through the above description, it can be found that the antibacterial meltblown fabric and the preparation process thereof have high-efficiency antibacterial function, can effectively filter and sterilize, and the nano zinc oxide particles and the nano carbon particles can form a contact type antibacterial layer on the meltblown fiber body without influencing air circulation or hidden contact trouble. The antibacterial mask can be combined with an electret to improve antibacterial ability, maintain long effective service life, especially meet the requirement of maintaining antibacterial ability after washing, and realize the repeated use of the mask.
The technical solutions of the present invention are fully described above, it should be noted that the specific embodiments of the present invention are not limited by the above description, and all technical solutions formed by equivalent or equivalent changes in structure, method, or function according to the spirit of the present invention by those skilled in the art are within the scope of the present invention.
Claims (9)
1. Antibiotic melt-blown fabric, its characterized in that:
the polypropylene antibacterial layer comprises 1000 parts of polypropylene particles, 15-35 parts of electret master batches and 1-3 parts of nano antibacterial groups according to the mass part ratio, wherein the nano antibacterial groups comprise nano zinc oxide particles accounting for more than 85% of the mass ratio.
2. The antibacterial meltblown fabric and the preparation process thereof according to claim 1, wherein:
the nano antibacterial group comprises nano zinc oxide particles and nano carbon particles.
3. The antibacterial meltblown fabric and the preparation process thereof according to claim 1, wherein:
the polypropylene antibacterial layer is characterized by also comprising a polypropylene fiber layer which is compounded with the polypropylene antibacterial layer into a whole, wherein the volume porosity of the polypropylene fiber layer is less than that of the polypropylene antibacterial layer.
4. Based on the preparation process of the antibacterial melt-blown fabric of any one of claims 1 to 3,
the method is characterized by comprising the following steps:
s1 melting polypropylene particles and electret master batch, adding into nanometer antibacterial group to form uniform mixed melt,
s2, the mixed melt is put into a melt-blowing device for melt filtration and is treated by ultrasonic radiation for melt-blowing spinning cooling to form the polypropylene antibacterial fibrous body,
s3, performing electret treatment on the polypropylene antibacterial fiber body to form a polypropylene antibacterial layer.
5. The process of claim 4, wherein the antimicrobial meltblown web is prepared by:
in step S2, the polypropylene antibacterial fibrous body is cooled to form a polypropylene antibacterial fibrous body, and then the polypropylene antibacterial fibrous body is subjected to a degummed operation.
6. The process of claim 4, wherein the antimicrobial meltblown web is prepared by:
in the step S1, firstly, the polypropylene particles and the electret master batch are subjected to hot melting mixing at the temperature of 222-228 ℃, then the nano antibacterial groups are put into the mixture for hot melting stirring, and the mixture is cooled and sliced for later use after being uniformly stirred.
7. The process of claim 6, wherein the antimicrobial meltblown web is prepared by:
in the step S2, the temperature of a feeding section of melt extrusion is 175-190 ℃, the temperature of a melting section is 220-225 ℃, the temperature of a homogenizing section is 223 +/-1 ℃, the ultrasonic radiation treatment time is 25-30 min, and the filtering is 100-120 meshes.
8. The process of claim 4, wherein the antimicrobial meltblown web is prepared by:
in the step S3, the electret voltage is 600-800V, and the electret time is 2-3S.
9. The process of claim 4, wherein the antimicrobial meltblown web is prepared by:
the method comprises the step of S4 compounding, wherein the polypropylene antibacterial layer and the polypropylene fiber layer are compounded at the outer edge through high frequency to form the antibacterial melt-blown fabric.
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| CN202011570292.4A CN112647189A (en) | 2020-12-26 | 2020-12-26 | Antibacterial melt-blown fabric and preparation process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113457477A (en) * | 2021-08-13 | 2021-10-01 | 南方科技大学台州研究院 | Nanofiber filtering membrane and preparation method and application thereof |
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| CN106009612A (en) * | 2016-07-01 | 2016-10-12 | 青岛燕园海洋生物科技有限公司 | Antibacterial nano composite material |
| CN107162530A (en) * | 2017-06-20 | 2017-09-15 | 合肥市淑芹美装饰工程有限公司 | A kind of thermal insulation mortar of antimildew and antibacterial and preparation method thereof |
| CN111945294A (en) * | 2020-06-01 | 2020-11-17 | 怀来欧洛普过滤器制造有限公司 | Antibacterial melt-blown fabric and preparation method and application thereof |
| CN111393754A (en) * | 2020-06-03 | 2020-07-10 | 江苏金发科技新材料有限公司 | Melt-blown polypropylene material and preparation method and application thereof |
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| CN113457477A (en) * | 2021-08-13 | 2021-10-01 | 南方科技大学台州研究院 | Nanofiber filtering membrane and preparation method and application thereof |
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Application publication date: 20210413 |