CN102836594A - 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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- CN102836594A CN102836594A CN2012103163571A CN201210316357A CN102836594A CN 102836594 A CN102836594 A CN 102836594A CN 2012103163571 A CN2012103163571 A CN 2012103163571A CN 201210316357 A CN201210316357 A CN 201210316357A CN 102836594 A CN102836594 A CN 102836594A
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- 239000004743 Polypropylene Substances 0.000 title claims abstract description 81
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 81
- -1 polypropylene Polymers 0.000 title claims abstract description 80
- 239000000463 material Substances 0.000 title claims abstract description 52
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 30
- 229910052613 tourmaline Inorganic materials 0.000 claims abstract description 41
- 239000011032 tourmaline Substances 0.000 claims abstract description 41
- 229940070527 tourmaline Drugs 0.000 claims abstract description 41
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000007822 coupling agent Substances 0.000 claims abstract description 21
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 16
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 16
- 239000002270 dispersing agent Substances 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000004750 melt-blown nonwoven Substances 0.000 claims description 44
- 239000002245 particle Substances 0.000 claims description 32
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 16
- 239000004744 fabric Substances 0.000 claims description 16
- 235000006708 antioxidants Nutrition 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 8
- 238000005520 cutting process 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
- 238000005303 weighing Methods 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
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 abstract 2
- 239000011787 zinc oxide Substances 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 11
- 239000000835 fiber Substances 0.000 description 10
- 238000001914 filtration Methods 0.000 description 10
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- 239000000428 dust Substances 0.000 description 7
- 239000000203 mixture 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
- 238000004140 cleaning Methods 0.000 description 5
- 241000894006 Bacteria Species 0.000 description 4
- 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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- 238000002474 experimental method Methods 0.000 description 2
- 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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- 241000894007 species Species 0.000 description 2
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- 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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- 230000007935 neutral effect Effects 0.000 description 1
- 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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- 238000005070 sampling Methods 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
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- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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Landscapes
- Filtering Materials (AREA)
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 the preparation method.
Background technology
At present, electret is widely used in the air filting material.Electret is meant the function dielectric material with long term storage electric charge ability, and static, piezoelectricity and pyroelectric effect are its basic physical effects that has.People are through applying highfield to some dielectric material (like polymer etc.), and adopt certain physical, chemical method that electric charge or electric polarization state are stationed muchly on dielectric, can be made into long-life electret.
Electret has obtained at aspects such as engineering, medical science, biology using widely at present.In electret air filtering material, utilization be electrostatic effect.Common air filting material generally all only depends on the mechanical stop effect, promptly through mechanism such as inertial deposition, gravity sedimentation, diffusion effects, the dust that flows in the gas is carried out interception function, to reach the filtration purpose.And airborne most of dust is a sub-micron grade particle, like the nicotine in the cigarette, quartz and glass fibre, asbestos and all kinds of piezoelectric ceramics dust etc. in the industrial dust.Traditional filter is wanted these powder dust particles of filtering, needs to adopt the fiber that is in the 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 come degerm.Have the electrostatic field up to supreme kilovolt of hundreds of in the electret air filtering material, the hole of filtering material is just as numerous passive collecting electrode.When the charged corpuscle in the air-flow especially sub-micron grade particle (charged often) passes through the space of material, just under the effect of electric field force, be hunted down.Neutral corpuscle in the air-flow becomes dipole because of responding to or polarizing, thereby also can be hunted down effectively.Because electric field force is a long range force; When same filter efficiency, the physical dimension in filter material space can be bigger than the physical dimension of general fibre or porous material, makes the pressure reduction of filter reduce by 20～40 times than traditional filter; Reduced flow resistance significantly, widely energy savings; Bacterium has natural electret state with virus in addition; Usually depend on the dust; When they passed through the electret filter hole, the strong electrostatic field and the little electric current that are produced by electret can stimulate bacterium to make protein variations, cytoplasm and the cell membrane of damage bacterium; Destroy the surface texture of bacterium, cause bacterial death.Just because of the multi-functional outstanding capture ability of sub-micron grade particle that reaches having carcinogenesis of low flow resistance, high efficiency, dust cleaning and sterilizing that electret filter had; Make it in the application of medical facilities cleaning, pharmaceuticals industry and biological products cleaning, the cleaning of high and new technology industry and aspects such as hotel, hotel, family and public place cleaning; Demonstrate special advantages, and become the leading products of the depollution of environment of new generation.
Electret is divided into manual electret and mineral electret.The manual electret handles some materials through charging forms such as thermoaeization, photic polarization or electric charge injections, forms the skew that atom or intramolecular charge distribute, or electric charge carrier caught by trap in the material, reaches the material polar.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 to press should can make the manual electret lose efficacy more than 100 ℃ usually.Therefore, the application and development of electret on fabric lays particular emphasis on the mineral electret at present.
Typical mineral electret is a tourmaline, is a kind of ring silicate crystal mineral of being made up of elements such as A1, Na, C a, Mg, B and Fe such as moisture, fluorine.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
4In the 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 influence tourmaline of the atom of Z three 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 does not receive the influence of external electrical field.In addition, tourmaline is easy to generate piezoelectric activity and pyroelectric effect.
Patent ZL200710069268.0 " a kind of electret air filtering material " discloses a kind of electret air filtering material; Got by following method preparation: (1) prepares the donble layer composite fibre of being made up of pre-filtering layer and main filter course earlier, and wherein pre-filtering layer filament directly is distributed in the 3-10 micron; Main filter course filament directly is distributed in the 1-5 micron; (2) again donble layer composite fibre is annotated plate and get 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: with the raw material polypropylene fusion; Mix with additive, make modified polypropene; 2), melt and spray preparation technology: a), under molten condition, with modified polypropylene melt body and function measuring pump feeding spinneret; B), described modified polypropene melt is extruded from spinneret orifice; C), the melt that will extrude spinneret orifice with high velocity, hot air blows out ultra-fine fiber, make it fly to fixed attention lace curtaining and cool off bonding formation fibre web; 3), electret preparation technology: the fibre web that step (2) is obtained is through the electrode of corona discharge assembly, and electrode discharge makes the fibre web electret, promptly gets electret.
Can know by the disclosed electret filter material of above-mentioned prior art, the complicated process of preparation of present electret, the 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;
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 the object of the 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, anti-oxidant 0～0.5 weight portion.
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, anti-oxidant 0.1～0.5 weight portion.
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; Anti-oxidant is selected from antioxidant 1010, anti-oxidant 619 or anti-oxidant 1076.
The 3rd optimal technical scheme of the present invention is: coupling agent is selected from titanate coupling agent; Anti-oxidant is selected from antioxidant 1010 or anti-oxidant 1076.
The 5th optimal technical scheme of the present invention is: the particle diameter of nano-tourmaline is 200～500nm, preferred 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, preferred 50～90nm, more preferably 50～85nm; The particle diameter of described nano zine oxide is 50～100nm, preferred 50～90nm, more preferably 50～85nm.
The invention still further relates to the preparation method of this antibacterial polypropylene melt-blown nonwoven filter material, concrete steps are:
(1) by weight taking by weighing each raw material, be that 1/2～2/3 dispersant, antioxidant, coupling agent mix with nano-tourmaline particulate and mass ratio, fully stir the back oven dry; With nano titanium oxide, nano zine oxide and remaining dispersant, fully stir the back oven dry;
(2) be the ratio of 1:5～6 with the section of the tourmaline particles that obtains in the step (1) and fusion-jetting polypropylene with the weight ratio, join in the extruder and melt extrude that cooling being prepared into the tourmaline master batch through cutting;
(3) nano titanium dioxide particles that obtains in the step (1), nano zine oxide particulate are mixed with the 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 the extruder and melt extrude; Cooling is prepared into titanium dioxide zinc oxide master batch through cutting;
(4) the tourmaline master batch that step (2), step (3) is prepared, titanium dioxide zinc oxide master batch mix with remaining fusion-jetting polypropylene section; Process the polypropylene melt blown non-woven fabric through the melt-blown non-woven former, through charger the polypropylene melt blown non-woven fabric is carried out electret again.
Preparation method's of the present invention first optimal technical scheme is: in step (1), dry temperature and time is 100～110 ℃, and the dry time is 1～3 hour.
Preparation method's of the present invention second optimal technical scheme 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 the melt-blown non-woven former process grammes per square metre be 15～60 the gram/square metre the polypropylene melt blown non-woven fabric, preferred 25～30 the gram/square metre.
Do further explanation and explanation in the face of technical scheme of the present invention down.
The antibacterial polypropylene melt-blown nonwoven filter material of the present invention's preparation, its raw material are formed and are comprised 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, anti-oxidant 0.1～0.5 weight portion.Through in polypropylene, adding nano-tourmaline, nano titanium oxide and nano zine oxide; Thereby the fibre net structure of non-weaving cloth is changed; Fibre net structure does not become loose before more adding, thereby can bring certain influence to the mechanical performance of nonwoven filter material.Because the present invention has adopted the littler nano-powder of particle diameter, thereby, before the non-weaving cloth of the present invention's preparation does not add nano-powder, do not change a lot, can be adapted to application as filter material.Can know through experiment; In polypropylene, add nano-tourmaline, nano titanium oxide and three kinds of nano materials of nano zine oxide, can make the electret time that prolongs the filter material for preparing, only add tourmaline, nano titanium oxide and nano zine oxide; The anti-microbial property of filter material promptly 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 had certain water-wash resistance.
The strainability of the antibacterial polypropylene melt-blown nonwoven filter material that the present invention prepares is excellent, and under the condition of the mass median diameter of air flow rate 28L/min, NaCl smaller or equal to 0.26 μ m, filter efficiency is up to 99%.
The specific embodiment of the present invention only limits to further explain and explanation the present invention, content of the present invention is not constituted restriction.The raw materials used marketable material that is of the present invention.
The specific embodiment
Embodiment 1～5:
A kind of antibacterial polypropylene melt-blown nonwoven filter material, its raw material is for down shown in the tabulation 1:
Table 1: prescription
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| The 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. by weight taking by weighing each raw material, be that 2/3 dispersant, antioxidant, coupling agent mix with nano-tourmaline particulate and mass ratio, fully stir the back oven dry; With nano titanium oxide, nano zine oxide and remaining dispersant, fully stir the back oven dry; Dry temperature and time is 100 ℃, and the dry time is 1 hour.
2. be the ratio of 1:5 with the section of the tourmaline particles that obtains in the step 1 and fusion-jetting polypropylene with the weight ratio, join in the extruder and melt extrude that cooling being prepared into the tourmaline master batch through cutting;
3. the nano titanium dioxide particles that obtains in the step 1, nano zine oxide particulate are mixed with the 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 the extruder and melt extrude; Cooling is prepared into titanium dioxide zinc oxide master batch through cutting;
4. the tourmaline master batch that step 2, step 3 is prepared, titanium dioxide zinc oxide master batch mix with remaining fusion-jetting polypropylene section; Process the polypropylene melt blown non-woven fabric through the melt-blown non-woven former, through charger the polypropylene melt blown non-woven fabric is carried out electret again.Electret voltage is-25kV, through the melt-blown non-woven former process grammes per square metre be 25～30 grams/square metre the polypropylene melt blown non-woven fabric.
Embodiment 6～10:
A kind of antibacterial polypropylene melt-blown nonwoven filter material, its raw material is for down shown in the tabulation 2:
Table 2: prescription
| Embodiment 6 | Embodiment 7 | Embodiment 8 | Embodiment 9 | Embodiment 10 | |
| The 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. by weight taking by weighing each raw material, be that 1/2 dispersant, antioxidant, coupling agent mix with nano-tourmaline particulate and mass ratio, fully stir the back oven dry; With nano titanium oxide, nano zine oxide and remaining dispersant, fully stir the back oven dry; Dry temperature and time is 100 ℃, and the dry time is 1 hour.
2. be the ratio of 1:5 with the section of the tourmaline particles that obtains in the step 1 and fusion-jetting polypropylene with the weight ratio, join in the extruder and melt extrude that cooling being prepared into the tourmaline master batch through cutting;
3. the nano titanium dioxide particles that obtains in the step 1, nano zine oxide particulate are mixed with the 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 the extruder and melt extrude; Cooling is prepared into titanium dioxide zinc oxide master batch through cutting;
4. the tourmaline master batch that step 2, step 3 is prepared, titanium dioxide zinc oxide master batch mix with remaining fusion-jetting polypropylene section; Process the polypropylene melt blown non-woven fabric through the melt-blown non-woven former, through charger the polypropylene melt blown non-woven fabric is carried out electret again.Electret voltage is-25kV, through the melt-blown non-woven former process grammes per square metre be 25～30 grams/square metre the polypropylene melt blown non-woven fabric.
Comparative example 1～3:
Preparation method according to embodiment 6 prepares following comparative example 1～3, and the product of preparation is used for comparative experiments.
Table 3: prescription
| Comparative example 1 | Comparative example 2 | Comparative example 3 | |
| The 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 numeral electric charge appearance prepares the present invention and Comparative Examples to measure, after Measuring Time is 48 hours behind the electret:
Table 4: experimental result
2. adopt the gas permeability of pressing the Air permenbility appearance to detect the antibacterial polypropylene melt spraying non-woven fabrics of the present invention and Comparative Examples preparation in the YG461 type fabric:
Table 5: experimental result
3. adopt U.S. product TSI-8130 type filterability detector that the antibacterial polypropylene melt spraying non-woven fabrics of this detection the present invention and Comparative Examples preparation is detected, testing conditions is: air flow rate 16L/min, the mass median diameter of NaCl are smaller 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 the antibacterial polypropylene melt spraying non-woven fabrics of this detection the present invention and Comparative Examples preparation.
The result that detection obtains is as shown in table 7:
Table 7: experimental result
Experimental example 2:
With embodiment 6～10, the antibacterial polypropylene melt spraying non-woven fabrics that comparative example 1～3 prepares was 45 ℃, 80%RH condition held 18 months, at duration of test respectively at 1,2,3,6,12,18 sampling at the end of month once, anti-microbial property was tested.Experimental result is as shown in table 8.
Table 8: experimental result
Claims (10)
1. antibacterial polypropylene melt-blown nonwoven filter material; It is characterized in that the raw material of described antibacterial polypropylene melt-blown nonwoven filter 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, anti-oxidant 0～0.5 weight portion.
2. antibacterial polypropylene melt-blown nonwoven filter material according to claim 1; It is characterized in that the raw material of described 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, anti-oxidant 0.1～0.5 weight portion.
3. antibacterial polypropylene melt-blown nonwoven filter material according to claim 1 and 2 is characterized in that described coupling agent is selected from titanate coupling agent, silane coupler; Dispersant is selected from Tissuemat E; Anti-oxidant is selected from antioxidant 1010, anti-oxidant 619 or anti-oxidant 1076.
4. antibacterial polypropylene melt-blown nonwoven filter material according to claim 3 is characterized in that described coupling agent is selected from titanate coupling agent; Anti-oxidant is selected from antioxidant 1010 or anti-oxidant 1076.
5. 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, preferred 300～500nm, more preferably 300～380nm.
6. 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, preferred 50～90nm, more preferably 50～85nm; The particle diameter of described nano zine oxide is 50～100nm, preferred 50～90nm, more preferably 50～85nm.
7. the preparation method of an antibacterial polypropylene melt-blown nonwoven filter material as claimed in claim 1 is:
(1) by weight taking by weighing each raw material, be that 1/2～2/3 dispersant, antioxidant, coupling agent mix with nano-tourmaline particulate and mass ratio, fully stir the back oven dry; With nano titanium oxide, nano zine oxide and remaining dispersant, fully stir the back oven dry;
(2) be the ratio of 1:5～6 with the section of the tourmaline particles that obtains in the step (1) and fusion-jetting polypropylene with the weight ratio, join in the extruder and melt extrude that cooling being prepared into the tourmaline master batch through cutting;
(3) nano titanium dioxide particles that obtains in the step (1), nano zine oxide particulate are mixed with the 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 the extruder and melt extrude; Cooling is prepared into titanium dioxide zinc oxide master batch through cutting;
(4) the tourmaline master batch that step (2), step (3) is prepared, titanium dioxide zinc oxide master batch mix with remaining fusion-jetting polypropylene section; Process the polypropylene melt blown non-woven fabric through the melt-blown non-woven former, through charger the polypropylene melt blown non-woven fabric is carried out electret again.
8. preparation method according to claim 7 is characterized in that, in step (1), dry temperature and time is 90～110 ℃, and the dry time is 1～3 hour.
9. preparation method according to claim 7 is characterized in that, in step (4), electret voltage is-25kV.
10. preparation method according to claim 7 is characterized in that, in step (4), through the melt-blown non-woven former process grammes per square metre be 15～60 the gram/square metre the polypropylene melt blown non-woven fabric, preferred 25～30 the gram/square metre.
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