CN102836594B - Antibacterial polypropylene melt-blow non-woven filter material and preparation method thereof - Google Patents
Antibacterial polypropylene melt-blow non-woven filter material and preparation method thereof Download PDFInfo
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- CN102836594B CN102836594B CN201210316357.1A CN201210316357A CN102836594B CN 102836594 B CN102836594 B CN 102836594B CN 201210316357 A CN201210316357 A CN 201210316357A CN 102836594 B CN102836594 B CN 102836594B
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- 239000004743 Polypropylene Substances 0.000 title claims abstract description 87
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 87
- -1 polypropylene Polymers 0.000 title claims abstract description 84
- 239000000463 material Substances 0.000 title claims abstract description 58
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 229910052613 tourmaline Inorganic materials 0.000 claims abstract description 42
- 239000011032 tourmaline Substances 0.000 claims abstract description 42
- 229940070527 tourmaline Drugs 0.000 claims abstract description 42
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 22
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000007822 coupling agent Substances 0.000 claims abstract description 20
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 15
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 15
- 239000002270 dispersing agent Substances 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 239000004750 melt-blown nonwoven Substances 0.000 claims description 51
- 239000002245 particle Substances 0.000 claims description 38
- 239000004744 fabric Substances 0.000 claims description 17
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- JRFBNCLFYLUNCE-UHFFFAOYSA-N zinc;oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[O-2].[Ti+4].[Zn+2] JRFBNCLFYLUNCE-UHFFFAOYSA-N 0.000 claims description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical group [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 7
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical group CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 7
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 claims description 4
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 2
- 229910000077 silane Inorganic materials 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 abstract 2
- 239000011787 zinc oxide Substances 0.000 abstract 1
- 239000000835 fiber Substances 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 11
- 238000001914 filtration Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 239000000203 mixture Substances 0.000 description 8
- 239000000428 dust Substances 0.000 description 7
- 229910052500 inorganic mineral Inorganic materials 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000011707 mineral Substances 0.000 description 6
- 239000004745 nonwoven fabric Substances 0.000 description 6
- 238000005507 spraying Methods 0.000 description 6
- 241000894006 Bacteria Species 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 230000000845 anti-microbial effect Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
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- 229910052731 fluorine Inorganic materials 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000011858 nanopowder Substances 0.000 description 2
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- 239000011780 sodium chloride Substances 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
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- 238000009941 weaving Methods 0.000 description 2
- SNICXCGAKADSCV-JTQLQIEISA-N (-)-Nicotine Chemical compound CN1CCC[C@H]1C1=CC=CN=C1 SNICXCGAKADSCV-JTQLQIEISA-N 0.000 description 1
- 208000005623 Carcinogenesis Diseases 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 229920001410 Microfiber Polymers 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
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- 238000005265 energy consumption Methods 0.000 description 1
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- 229960002715 nicotine Drugs 0.000 description 1
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Natural products CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 description 1
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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Abstract
The invention relates to a polypropylene melt-blow non-woven filter material, in particular to an antibacterial polypropylene melt-blow non-woven filter material and a preparation method thereof. The polypropylene melt-blow non-woven filter material is prepared from the following raw materials in parts by weight: 85-95 parts of melt-blow polypropylene slices, 1-5 parts of nanometer tourmaline, 1-3 parts of nanometer titanium oxide, 1-3 parts of nanometer zinc oxide, 0.1-3 parts of a coupling agent, 0.1-2 parts of a dispersing agent and 0-0.5 part of an antioxidant. According to the antibacterial polypropylene melt-blow non-woven filter material prepared with the method, a formula and a preparation process are improved, so that the electret polarity time of the prepared filter material can be up to 5-6 years, and the antibacterial performance is superior to the prior art.
Description
Technical field
The present invention relates to a kind of polypropylene melt-blown nonwoven filter material, specifically, relate to a kind of antibacterial polypropylene melt-blown nonwoven filter material, and preparation method.
Background technology
At present, electret is widely used in air filting material.Electret refers to the function dielectric material with long term storage electric charge ability, and static, piezoelectricity and pyroelectric effect are its basic physical effects having.People are by some dielectric material (as polymer etc.) is applied to highfield, and adopt certain physics, chemical method that electric charge or electric polarization state are stationed muchly on dielectric, can be made into long-life electret.
Electret is widely used at aspects such as engineering, medical science, biology at present.In electret air filtering material, utilization be electrostatic effect.Common air filting material generally all only depends on mechanical stop effect, by mechanism such as inertial deposition, gravity sedimentation, diffusion effects, the dust that flows is carried out to interception function, to reach filtration object in gas.And airborne most of dust is sub-micron grade particle, as the nicotine in cigarette, quartz and glass fibre, asbestos and all kinds of piezoelectric ceramics dust etc. in industrial dust.Traditional filter is wanted these powder dust particles of filtering, needs to adopt the fiber in compacting state, will greatly increase flow resistance like this, increases energy consumption; On the other hand, common air cleaner does not possess sterilizing function, and needs to adopt other supplementary means to carry out degerm.In electret air filtering material, have the electrostatic field up to supreme kilovolt of hundreds of, the hole of filtering material is just as numerous passive collecting electrode.Charged corpuscle in air-flow especially during the space of sub-micron grade particle (charged often) by material, is just hunted down under the effect of electric field force.Neutral corpuscle in air-flow becomes dipole because responding to or polarizing, thereby also can effectively be hunted down.Because electric field force is long range force, when same filter efficiency, the physical dimension in filter material space can be larger than the physical dimension of general fibre or porous material, makes the pressure reduction of filter reduce by 20～40 times than traditional filter, reduce significantly flow resistance, can save widely the energy; Bacterium and virus have natural electret state in addition, conventionally depend on dust, when they pass through electret filter hole, the strong electrostatic field being produced by electret and micro-electric current can stimulate bacterium to make protein variations, cytoplasm and the cell membrane of damage bacterium, destroy the surface texture of bacterium, cause bacterium dead.The low flow resistance, high efficiency, the dust cleaning and sterilizing that just because of electret filter, have are multi-functional and to having the outstanding capture ability of sub-micron grade particle of carcinogenesis, make it in the application of the aspects such as medical facilities cleaning, pharmaceuticals industry and biological products cleaning, the cleaning of high and new technology industry and hotel, hotel, family and public place cleaning, demonstrate unique advantage, and become the leading products of the depollution of environment of new generation.
Electret is divided into manual electret and mineral electret.Manual electret processes some materials by charging forms such as thermal poling, photic polarization or charge injections, forms the skew that atom or intramolecular charge distribute, or electric charge carrier caught by trap in material, reaches material polarity.The effect of manual electret's polarity is little, and to thermo-responsive, along with temperature rises, electric polarity is significantly weak, and to 70～80 o'clock, electric polarity almost all disappeared.The temperature that fiber will stand flatiron should, more than 100 ℃, can make manual electret lose efficacy conventionally.Therefore, the application and development of electret on fabric lays particular emphasis on mineral electret at present.
Typical mineral electret is tourmaline, is the ring silicate crystal mineral such as a kind of moisture, fluorine being comprised of elements such as A1, Na, C a, Mg, B and Fe.The chemical analysis of tourmaline mineral is very complicated, and its general formula can be expressed as XY
3z
6si
6o
18(BO
3)
3w
4.In formula: X=Na, Ca, K; Y=Mg
2+, Fe
2+, Mn
2+, A1, Fe
3+, Mn
3+, Li; Z=A1, Fe
3+, Cr
3+, Mg; W=OH, F, O.X, Y, the different colors that can affect tourmaline of the atom of Z tri-positions or ionic species.According to the difference of Y position occupy-place atomic species, tourmaline is divided into dravite, iron tourmaline, tsilaisite and elbaite etc.The comparable manual electret of electret performance of tourmaline exceeds 10 times.In the known electret mineral with permanent polarity, the permanent self power generation polarity of tourmaline is the strongest, and its polarization vector is not subject to the impact of external electrical field.In addition, tourmaline easily produces piezoelectric activity and pyroelectric effect.
Patent ZL200710069268.0 " a kind of electret air filtering material " discloses a kind of electret air filtering material, by following method, prepared and obtained: (1) first prepares the donble layer composite fibre being comprised of pre-filtering layer and main filter course, wherein pre-filtering layer fiber string diameter is distributed in 3-10 micron; Main filter course fiber string diameter is distributed in 1-5 micron; (2) again donble layer composite fibre is noted to plate and obtain product.Electret air filtering material of the present invention has high electret charge stability, remarkable filter efficiency, the very low pressure loss, long service life.
Patent ZL201010241769.4 " a kind of preparation method of melt-blown polypropylene electret filter material " relates to a kind of preparation method of melt-blown polypropylene electret filter material, comprise the steps: 1), polypropylene modification: by raw material polypropylene fusion, mix with additive, make modified polypropene; 2), melt and spray preparation technology: a), under molten condition, by the modified polypropene melt amount of using tricks pump feeding spinneret; B), described modified polypropene melt is extruded from spinneret orifice; C), with high velocity, hot air, the melt of extruding spinneret orifice is blown out to ultra-fine fiber, make it fly to solidifying lace curtaining and cooling bonding formation fibre web; 3), electret preparation technology: the fibre web that step (2) is obtained is by the electrode of corona discharge assembly, and electrode discharge makes fibre web electret, obtains electret.
From the disclosed electret filter material of above-mentioned prior art, the complicated process of preparation of current electret, electret effect is unsatisfactory.For this reason, the present invention proposes a kind of antibacterial polypropylene melt-blown nonwoven filter material and preparation method thereof.
Summary of the invention
Primary goal of the invention of the present invention is to have proposed a kind of antibacterial polypropylene melt-blown nonwoven filter material;
The second goal of the invention of the present invention is to propose the preparation method of this antibacterial polypropylene melt-blown nonwoven filter material.
In order to realize object of the present invention, the technical scheme of employing is:
The present invention relates to a kind of antibacterial polypropylene melt-blown nonwoven filter material, its raw material is: fusion-jetting polypropylene section 85～95 weight portions, nano-tourmaline 1～5 weight portion, nano titanium oxide 1～3 weight portion, nano zine oxide 1～3 weight portion, coupling agent 0.1～3 weight portion, dispersant 0.1～2 weight portion, antioxidant 0～0.5 weight portion.
The first optimal technical scheme of the present invention is: the raw material of antibacterial polypropylene melt-blown nonwoven filter material is: fusion-jetting polypropylene section 90～96 weight portions, nano-tourmaline 2～5 weight portions, nano titanium oxide 1～2 weight portion, nano zine oxide 1～2 weight portion, coupling agent 0.2～2 weight portion, dispersant 0.1～1 weight portion, antioxidant 0.1～0.5 weight portion.
The second optimal technical scheme of the present invention is: coupling agent is selected from titanate coupling agent, silane coupler; Dispersant is selected from Tissuemat E; Antioxidant is selected from antioxidant 1010, antioxidant 619 or antioxidant 1076.
The 3rd optimal technical scheme of the present invention is: coupling agent is selected from titanate coupling agent; Antioxidant is selected from antioxidant 1010 or antioxidant 1076.
The 5th optimal technical scheme of the present invention is: the particle diameter of nano-tourmaline is 200～500nm, preferably 300～500nm, more preferably 300～380nm.
The 6th optimal technical scheme of the present invention is: the particle diameter of nano titanium oxide is 50～100nm, preferably 50～90nm, more preferably 50～85nm; The particle diameter of described nano zine oxide is 50～100nm, preferably 50～90nm, more preferably 50～85nm.
The preparation method who the invention still further relates to this antibacterial polypropylene melt-blown nonwoven filter material, concrete steps are:
(1) take by weight each raw material, the dispersant, antioxidant, the coupling agent that by nano-tourmaline particulate, are 1/2～2/3 with mass ratio mix, and fully stir post-drying; By nano titanium oxide, nano zine oxide and remaining dispersant, fully stir post-drying;
(2) section of the tourmaline particles obtaining in step (1) and fusion-jetting polypropylene be take to the ratio that weight ratio is 1:5～6, join in extruder and melt extrude, cooling, through cutting, being prepared into tourmaline master batch;
(3) nano titanium dioxide particles obtaining in step (1), nano zine oxide particulate are mixed with fusion-jetting polypropylene section, the weight ratio of nano titanium dioxide particles, nano zine oxide particulate sum and fusion-jetting polypropylene section is 1:2～3, join in extruder and melt extrude, cooling, through cutting, be prepared into titanium dioxide zinc oxide master batch;
(4) tourmaline master batch step (2), step (3) being prepared, titanium dioxide zinc oxide master batch mix with remaining fusion-jetting polypropylene section, through melt-blown non-woven former, make polypropylene melt blown non-woven fabric, then through charger, polypropylene melt blown non-woven fabric is carried out to electret.
The first optimal technical scheme of preparation method of the present invention is: in step (1), dry temperature and time is 100～110 ℃, and the dry time is 1～3 hour.
The second optimal technical scheme of preparation method of the present invention is: in step (4), electret voltage is-25kV.
Preparation method's of the present invention the 3rd optimal technical scheme is: in step (4), through melt-blown non-woven former, making grammes per square metre is the polypropylene melt blown non-woven fabric of 15～60 grams/m, preferably 25～30 grams/m.
Below technical scheme of the present invention is made further explanation.
Antibacterial polypropylene melt-blown nonwoven filter material prepared by the present invention, its raw material forms and comprises fusion-jetting polypropylene section 90～96 weight portions, nano-tourmaline 2～5 weight portions, nano titanium oxide 1～2 weight portion, nano zine oxide 1～2 weight portion, coupling agent 0.2～2 weight portion, dispersant 0.1～1 weight portion, antioxidant 0.1～0.5 weight portion.By add nano-tourmaline, nano titanium oxide and nano zine oxide in polypropylene, thereby the fibre net structure of non-weaving cloth is changed, fibre net structure does not become loose before not adding, thereby can bring certain impact to the mechanical performance of nonwoven filter material.Because the present invention has adopted the nano-powder that particle diameter is less, thereby non-weaving cloth prepared by the present invention does not add before nano-powder, does not change a lot, and can be adapted to the application as filter material.Known by experiment, in polypropylene, add nano-tourmaline, nano titanium oxide and three kinds of nano materials of nano zine oxide, can make to extend the electret time of the filter material preparing, only add tourmaline, nano titanium oxide and nano zine oxide, the anti-microbial property of filter material declined to a great extent after 1 year, and the filter material that the present invention prepares, its anti-microbial property can keep 5～6 years, and has certain water-wash resistance.
The strainability of the antibacterial polypropylene melt-blown nonwoven filter material that the present invention prepares is excellent, and the mass median diameter of air flow rate 28L/min, NaCl is less than or equal under the condition of 0.26 μ m, and filter efficiency is up to 99%.
The specific embodiment of the present invention only limits to further explain and explanation the present invention, not to Composition of contents restriction of the present invention.The raw materials used marketable material that is of the present invention.
The specific embodiment
Embodiment 1～5:
An antibacterial polypropylene melt-blown nonwoven filter material, its raw material is shown in lower list 1:
Table 1: formula
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| Fusion-jetting polypropylene section | 85kg | 90kg | 95kg | 96kg | 93kg |
| Nano-tourmaline | 1kg | 2kg | 3kg | 4kg | 5kg |
| Nano titanium oxide | 1kg | 2kg | 3kg | 1kg | 2kg |
| Nano zine oxide | 1kg | 2kg | 2kg | 1kg | 2kg |
| Titanate coupling agent | 0.1kg | 0.2kg | 0.5kg | 1kg | 1.5kg |
| Tissuemat E | 0.1kg | 0.5kg | 1kg | 2kg | 1kg |
| Antioxidant 1010 | 0 | 0.1kg | 0.3kg | 0.4kg | 0.5kg |
The particle diameter of nano-tourmaline is 300～350nm, and the particle diameter of nano titanium oxide is 50～75nm, and the particle diameter of nano zine oxide is 50～75nm.
The preparation method of this antibacterial polypropylene melt-blown nonwoven filter material is:
1. take by weight each raw material, the dispersant, antioxidant, the coupling agent that by nano-tourmaline particulate, are 2/3 with mass ratio mix, and fully stir post-drying; By nano titanium oxide, nano zine oxide and remaining dispersant, fully stir post-drying; Dry temperature and time is 100 ℃, and the dry time is 1 hour.
2. the ratio that the weight ratio of the section of the tourmaline particles obtaining in step 1 and fusion-jetting polypropylene being take is 1:5, joins in extruder and melt extrudes, cooling, through cutting, being prepared into tourmaline master batch;
3. the nano titanium dioxide particles obtaining in step 1, nano zine oxide particulate are mixed with fusion-jetting polypropylene section, the weight ratio of nano titanium dioxide particles, nano zine oxide particulate sum and fusion-jetting polypropylene section is 1:2, join in extruder and melt extrude, cooling, through cutting, be prepared into titanium dioxide zinc oxide master batch;
4. tourmaline master batch step 2, step 3 being prepared, titanium dioxide zinc oxide master batch mix with remaining fusion-jetting polypropylene section, through melt-blown non-woven former, make polypropylene melt blown non-woven fabric, then through charger, polypropylene melt blown non-woven fabric is carried out to electret.Electret voltage is-25kV, and through melt-blown non-woven former, making grammes per square metre is the polypropylene melt blown non-woven fabric of 25～30 grams/m.
Embodiment 6～10:
An antibacterial polypropylene melt-blown nonwoven filter material, its raw material is shown in lower list 2:
Table 2: formula
| Embodiment 6 | Embodiment 7 | Embodiment 8 | Embodiment 9 | Embodiment 10 | |
| Fusion-jetting polypropylene section | 91kg | 91kg | 91kg | 91kg | 92kg |
| Nano-tourmaline | 4kg | 5kg | 5kg | 4kg | 4kg |
| Nano titanium oxide | 2kg | 2kg | 1kg | 1kg | 1kg |
| Nano zine oxide | 2kg | 1kg | 1kg | 2kg | 1kg |
| Titanate coupling agent | 0.4kg | 0.4kg | 1kg | 0.8kg | 0.5kg |
| Tissuemat E | 0.1kg | 0.1kg | 0.5kg | 1kg | 1kg |
| Antioxidant 1010 | 0.5kg | 0.5kg | 0.5kg | 0.2kg | 0.5kg |
The particle diameter of nano-tourmaline is 300～350nm, and the particle diameter of nano titanium oxide is 50～75nm, and the particle diameter of nano zine oxide is 50～75nm.
The preparation method of this antibacterial polypropylene melt-blown nonwoven filter material is:
1. take by weight each raw material, the dispersant, antioxidant, the coupling agent that by nano-tourmaline particulate, are 1/2 with mass ratio mix, and fully stir post-drying; By nano titanium oxide, nano zine oxide and remaining dispersant, fully stir post-drying; Dry temperature and time is 100 ℃, and the dry time is 1 hour.
2. the ratio that the weight ratio of the section of the tourmaline particles obtaining in step 1 and fusion-jetting polypropylene being take is 1:5, joins in extruder and melt extrudes, cooling, through cutting, being prepared into tourmaline master batch;
3. the nano titanium dioxide particles obtaining in step 1, nano zine oxide particulate are mixed with fusion-jetting polypropylene section, the weight ratio of nano titanium dioxide particles, nano zine oxide particulate sum and fusion-jetting polypropylene section is 1:3, join in extruder and melt extrude, cooling, through cutting, be prepared into titanium dioxide zinc oxide master batch;
4. tourmaline master batch step 2, step 3 being prepared, titanium dioxide zinc oxide master batch mix with remaining fusion-jetting polypropylene section, through melt-blown non-woven former, make polypropylene melt blown non-woven fabric, then through charger, polypropylene melt blown non-woven fabric is carried out to electret.Electret voltage is-25kV, and through melt-blown non-woven former, making grammes per square metre is the polypropylene melt blown non-woven fabric of 25～30 grams/m.
Comparative example 1～3:
According to the preparation method of embodiment 6, prepare following comparative example 1～3, the product of preparation is for comparative experiments.
Table 3: formula
| Comparative example 1 | Comparative example 2 | Comparative example 3 | |
| Fusion-jetting polypropylene section | 92kg | 92kg | 92kg |
| Nano-tourmaline | 6kg | 5kg | 5kg |
| Nano titanium oxide | 0 | 1kg | 0 |
| Nano zine oxide | 0 | 0 | 1kg |
| Titanate coupling agent | 0.5kg | 0.5kg | 0.5kg |
| Tissuemat E | 1kg | 1kg | 1kg |
| Antioxidant 1010 | 0.5kg | 0.5kg | 0.5kg |
The particle diameter of nano-tourmaline is 300～350nm, and the particle diameter of nano titanium oxide is 50～75nm, and the particle diameter of nano zine oxide is 50～75nm.
Experimental example 1: Performance Detection
The performance of the antibacterial polypropylene melt spraying non-woven fabrics that the present invention is prepared detects:
1. adopt the surface charge density of the antibacterial polypropylene melt spraying non-woven fabrics that EST111 type digital charge meter prepares the present invention and comparative example to measure, after Measuring Time is 48 hours after electret:
Table 4: experimental result
2. adopt the gas permeability of pressing air permeation volume gauge to detect antibacterial polypropylene melt spraying non-woven fabrics prepared by the present invention and comparative example in YG461 type fabric:
Table 5: experimental result
3. adopt the U.S. to produce the antibacterial polypropylene melt spraying non-woven fabrics that TSI-8130 type filterability detector prepared this detection the present invention and comparative example and detect, testing conditions is: air flow rate 16L/min, and the mass median diameter of NaCl is for being less than or equal to 0.26 μ m;
Table 6: experimental result
4. adopt succusion (evaluation the 3rd part of GB/T 20944.3-2008 antibacterial textile performance) to test the anti-microbial property of antibacterial polypropylene melt spraying non-woven fabrics prepared by this detection the present invention and comparative example.
The result that detection obtains is as shown in table 7:
Table 7: experimental result
Experimental example 2:
By embodiment 6～10, the antibacterial polypropylene melt spraying non-woven fabrics that comparative example 1～3 prepares is to place 18 months under 45 ℃, 80%RH condition, at duration of test respectively at 1,2,3,6,12,18 sampling at the end of month once, anti-microbial property is tested.Experimental result is as shown in table 8.
Table 8: experimental result
Claims (13)
1. an antibacterial polypropylene melt-blown nonwoven filter material, is characterized in that, the raw material of described antibacterial polypropylene melt-blown nonwoven filter material is:
Fusion-jetting polypropylene section 90～92 weight portions, nano-tourmaline 4～5 weight portions, nano titanium oxide 1～2 weight portion, nano zine oxide 1～2 weight portion, coupling agent 0.2～2 weight portion, dispersant 0.1～1 weight portion, antioxidant 0.1～0.5 weight portion; The preparation method of described antibacterial polypropylene melt-blown nonwoven filter material is:
(1) take by weight each raw material, the dispersant, antioxidant, the coupling agent that by nano-tourmaline particulate, are 1/2～2/3 with mass ratio mix, and fully stir post-drying; By nano titanium oxide, nano zine oxide and remaining dispersant, fully stir post-drying;
(2) section of the tourmaline particles obtaining in step (1) and fusion-jetting polypropylene be take to the ratio that weight ratio is 1:5～6, join in extruder and melt extrude, cooling, through cutting, being prepared into tourmaline master batch;
(3) nano titanium dioxide particles obtaining in step (1), nano zine oxide particulate are mixed with fusion-jetting polypropylene section, the weight ratio of nano titanium dioxide particles, nano zine oxide particulate sum and fusion-jetting polypropylene section is 1:2～3, join in extruder and melt extrude, cooling, through cutting, be prepared into titanium dioxide zinc oxide master batch;
(4) tourmaline master batch step (2), step (3) being prepared, titanium dioxide zinc oxide master batch mix with remaining fusion-jetting polypropylene section, through melt-blown non-woven former, make polypropylene melt blown non-woven fabric, then through charger, polypropylene melt blown non-woven fabric is carried out to electret.
2. antibacterial polypropylene melt-blown nonwoven filter material according to claim 1, is characterized in that, described coupling agent is selected from titanate coupling agent, silane coupler; Dispersant is selected from Tissuemat E; Antioxidant is selected from antioxidant 1010, antioxidant 619 or antioxidant 1076.
3. antibacterial polypropylene melt-blown nonwoven filter material according to claim 2, is characterized in that, described coupling agent is selected from titanate coupling agent; Antioxidant is selected from antioxidant 1010 or antioxidant 1076.
4. antibacterial polypropylene melt-blown nonwoven filter material according to claim 1, is characterized in that, the particle diameter of described nano-tourmaline is 200～500nm.
5. antibacterial polypropylene melt-blown nonwoven filter material according to claim 4, is characterized in that, the particle diameter of described nano-tourmaline is 300～500nm.
6. antibacterial polypropylene melt-blown nonwoven filter material according to claim 4, is characterized in that, the particle diameter of described nano-tourmaline is 300～380nm.
7. antibacterial polypropylene melt-blown nonwoven filter material according to claim 1, is characterized in that, the particle diameter of described nano titanium oxide is 50～100nm; The particle diameter of described nano zine oxide is 50～100nm.
8. antibacterial polypropylene melt-blown nonwoven filter material according to claim 7, is characterized in that, the particle diameter of described nano titanium oxide is 50～90nm; The particle diameter of described nano zine oxide is 50～90nm.
9. antibacterial polypropylene melt-blown nonwoven filter material according to claim 1, is characterized in that, the particle diameter of described nano titanium oxide is 50～85nm; The particle diameter of described nano zine oxide is 50～85nm.
10. antibacterial polypropylene melt-blown nonwoven filter material according to claim 1, is characterized in that, in step (1), dry temperature and time is 90～110 ℃, and the dry time is 1～3 hour.
11. antibacterial polypropylene melt-blown nonwoven filter materials according to claim 1, is characterized in that, in step (4), electret voltage is-25kV.
12. antibacterial polypropylene melt-blown nonwoven filter materials according to claim 1, is characterized in that, in step (4), through melt-blown non-woven former, making grammes per square metre is the polypropylene melt blown non-woven fabric of 15～60 grams/m.
13. antibacterial polypropylene melt-blown nonwoven filter materials according to claim 1, is characterized in that, the grammes per square metre of polypropylene melt blown non-woven fabric is 25～30 grams/m.
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