CN105040401A - Method for improving filter efficiency of melt-blowing non-woven fabric - Google Patents
Method for improving filter efficiency of melt-blowing non-woven fabric Download PDFInfo
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- CN105040401A CN105040401A CN201510571807.5A CN201510571807A CN105040401A CN 105040401 A CN105040401 A CN 105040401A CN 201510571807 A CN201510571807 A CN 201510571807A CN 105040401 A CN105040401 A CN 105040401A
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- melt
- blowing nonwoven
- filter efficiency
- blowing
- charger
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- 238000007664 blowing Methods 0.000 title claims abstract description 93
- 238000000034 method Methods 0.000 title claims abstract description 63
- 239000004745 nonwoven fabric Substances 0.000 title abstract 7
- 238000009832 plasma treatment Methods 0.000 claims abstract description 19
- 238000004140 cleaning Methods 0.000 claims abstract description 11
- 230000010287 polarization Effects 0.000 claims description 32
- 238000005096 rolling process Methods 0.000 claims description 26
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 14
- 238000012545 processing Methods 0.000 claims description 14
- 239000004744 fabric Substances 0.000 claims description 7
- 238000002347 injection Methods 0.000 abstract description 5
- 239000007924 injection Substances 0.000 abstract description 5
- 230000003712 anti-aging effect Effects 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 9
- 239000002131 composite material Substances 0.000 description 9
- 230000032683 aging Effects 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Chemical Or Physical Treatment Of Fibers (AREA)
- Electrostatic Separation (AREA)
Abstract
The invention discloses a method for improving the filter efficiency of melt-blowing non-woven fabric. The method comprises the following steps that 1, equipment cleaning is carried out; 2, plasma treatment is carried out, wherein in the open atmospheric environment, plasma treatment is carried out on the melt-blowing non-woven fabric at room temperature and the relative humidity of 30%-75%; 3, corona charging treatment is carried out, wherein in the open atmospheric environment, corona charging treatment is carried out on the melt-blowing non-woven fabric obtained after plasma treatment at room temperature and the relative humidity of 30%-75%, and the polarized melt-blowing non-woven fabric is obtained. According to the method, a plasma treatment method and a corona charging method are combined, charge injection is carried out on electret of the melt-blowing non-woven fabric, so that the filter performance of the melt-blowing non-woven fabric obtained after electret treatment is more excellent, and more excellent anti-ageing performance is achieved.
Description
Technical field
The present invention relates to melt-blowing nonwoven polarization process, particularly, relate to a kind of method improving melt-blowing nonwoven filter efficiency.
Background technology
Melt-blowing nonwoven as air filting material, through can effectively improve its filter efficiency to after the process of melt-blowing nonwoven electret.General is only adopt charge injection method directly to the process of melt-blowing nonwoven electret now, as corona charging method, liquid comes into contact mise-a-la-masse method, irradiation mise-a-la-masse method etc., above method is adopted directly to carry out charge injection to melt-blowing nonwoven, the quantity of electric charge injected and charge stability deficiency, cause its filter efficiency to have much room for improvement and filter material ageing resistace is poor.
Summary of the invention
In order to overcome the deficiencies in the prior art, the object of the present invention is to provide a kind of method improving melt-blowing nonwoven filter efficiency, Cement Composite Treated by Plasma and corona charging method combine by the present invention, charge injection is carried out to melt-blowing nonwoven electret, make the strainability of the melt-blowing nonwoven through electret process more superior, and there is more outstanding ageing resistace.
For solving the problem, the technical solution adopted in the present invention is as follows:
Improve a method for melt-blowing nonwoven filter efficiency, comprise the following steps:
1) equipment cleaning;
2) plasma treatment: in open atmospheric environment, under room temperature, relative humidity 30-75%, carries out plasma treatment to melt-blowing nonwoven;
3) corona charging process: in open atmospheric environment, under room temperature, relative humidity 30-75%, the melt-blowing nonwoven after article on plasma process carries out corona charging process; Obtain the melt-blowing nonwoven after polarization.
Further, also step 4 is comprised) rolling: rolling process is carried out to the melt-blowing nonwoven after polarization.
Preferably, described step 4) in rolling speed be 0.1 ~ 30.0m/min.
Preferably, described step 1) equipment cleaning is specially, respectively with ethanol by the electrode of plasma processing apparatus and the electrode of charger and charged conveying roller, deflector roll, roller bearing wiped clean;
Further, described step 1) and 2) between also comprise step 1.1) wear cloth: by melt-blowing nonwoven successively above plasma processing apparatus electrode and charger base part pass, and to be passed by the charged conveying roller of charger.
Preferably, described step 2) in plasma treatment appts running parameter be: voltage 100V ~ 700V, electric current 0.20A ~ 2.50A, output frequency 5.0KHz ~ 20.0KHz.
Preferably, described step 2) in plasma treatment appts running parameter be: voltage 150V ~ 250V, electric current 0.50A ~ 1.50A, output frequency 5.0KHz ~ 9.0KHz.
Preferably, described step 3) in charger running parameter be: voltage-10.0kV ~-150.0kV, electric current-0.20mA ~-3.00mA, electret distance 5cm ~ 25cm, 1s in polarization time ~ 300s.
Preferably, described step 3) in charger running parameter be: voltage-10.0kV ~-50.0kV, electric current-0.20mA ~-1.00mA, electret distance 10cm ~ 20cm, 1s in polarization time ~ 10s.
Compared to existing technology, beneficial effect of the present invention is:
Cement Composite Treated by Plasma and corona charging method combine by the present invention, carry out charge injection to melt-blowing nonwoven electret, make the strainability of the melt-blowing nonwoven through electret process more superior, and have more outstanding ageing resistace; Plasma is first utilized first to do suitable process to melt-blowing nonwoven, and then corona charging is carried out to melt-blowing nonwoven, because plasma bombardment introduces charge trap on the nearly surface of melt-blowing nonwoven, enhance the capture ability of melt-blowing nonwoven to iunjected charge, make inject the quantity of electric charge increase and the electric charge of capturing can be more stable storage, show good charge storage stability, thus improve the filter efficiency of melt-blowing nonwoven, and make melt-blowing nonwoven air filting material ageing resistace be improved significantly.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is described in further detail.
Improve a method for melt-blowing nonwoven filter efficiency, comprise the following steps:
1) equipment cleaning;
2) plasma treatment: in open atmospheric environment, under room temperature, relative humidity 30-75%, carries out plasma treatment to melt-blowing nonwoven;
3) corona charging process: in open atmospheric environment, under room temperature, relative humidity 30-75%, the melt-blowing nonwoven after article on plasma process carries out corona charging process; Obtain the melt-blowing nonwoven after polarization.
Embodiment 1
Polarization process is carried out to melt-blowing nonwoven
1) equipment cleaning: respectively with ethanol by the electrode of plasma processing apparatus and the electrode of charger and charged conveying roller, deflector roll, roller bearing wiped clean, prevent the phenomenon that melt-blowing nonwoven punctures by point discharge, thus cause strainability to decline.
1.1) cloth is worn: passed with charger base part above plasma processing apparatus electrode successively by melt-blowing nonwoven, and passed by the charged conveying roller of charger.
2) plasma treatment: in open atmospheric environment, under room temperature, relative humidity 30%, voltage 100V, electric current 0.20A, output frequency 20.0KHz, carry out Cement Composite Treated by Plasma to melt-blowing nonwoven.
3) corona charging process: in open atmospheric environment, under room temperature, relative humidity 30%, voltage-10.0kV, electric current-0.20mA, electret distance 25cm, 300s in polarization time, the melt-blowing nonwoven after article on plasma process carries out corona charging process.
4) rolling: carry out rolling process to the melt-blowing nonwoven after polarization, rolling speed is 0.1m/min, obtains the melt-blowing nonwoven after the polarization of rolling.
Embodiment 2
Polarization process is carried out to melt-blowing nonwoven
1) equipment cleaning: respectively with ethanol by the electrode of plasma processing apparatus and the electrode of charger and charged conveying roller, deflector roll, roller bearing wiped clean, prevent the phenomenon that melt-blowing nonwoven punctures by point discharge, thus cause strainability to decline.
1.1) cloth is worn: passed with charger base part above plasma processing apparatus electrode successively by melt-blowing nonwoven, and passed by the charged conveying roller of charger.
2) plasma treatment: in open atmospheric environment, under room temperature, relative humidity 45%, voltage 150V, electric current 0.50A, output frequency 10.0KHz, carry out Cement Composite Treated by Plasma to melt-blowing nonwoven.
3) corona charging process: in open atmospheric environment, under room temperature, relative humidity 45%, voltage-15.0kV, electric current-0.34mA, electret distance 10cm, 20s in polarization time, the melt-blowing nonwoven after article on plasma process carries out corona charging process.
4) rolling: carry out rolling process to the melt-blowing nonwoven after polarization, rolling speed is 1.5m/min, obtains the melt-blowing nonwoven after the polarization of rolling.
Embodiment 3
Polarization process is carried out to melt-blowing nonwoven
1) equipment cleaning: respectively with ethanol by the electrode of plasma processing apparatus and the electrode of charger and charged conveying roller, deflector roll, roller bearing wiped clean, prevent the phenomenon that melt-blowing nonwoven punctures by point discharge, thus cause strainability to decline.
1.1) cloth is worn: passed with charger base part above plasma processing apparatus electrode successively by melt-blowing nonwoven, and passed by the charged conveying roller of charger.
2) plasma treatment: in open atmospheric environment, under room temperature, relative humidity 75%, voltage 700V, electric current 2.50A, output frequency 5.0KHz, carry out Cement Composite Treated by Plasma to melt-blowing nonwoven.
3) corona charging process: in open atmospheric environment, under room temperature, relative humidity 75%, voltage-150.0kV, electric current-3.00mA, electret distance 5cm, 1s in polarization time, the melt-blowing nonwoven after article on plasma process carries out corona charging process.
4) rolling: carry out rolling process to the melt-blowing nonwoven after polarization, rolling speed is 30.0m/min, obtains the melt-blowing nonwoven after the polarization of rolling.
Embodiment 4
Polarization process is carried out to melt-blowing nonwoven
1) equipment cleaning: respectively with ethanol by the electrode of plasma processing apparatus and the electrode of charger and charged conveying roller, deflector roll, roller bearing wiped clean, prevent the phenomenon that melt-blowing nonwoven punctures by point discharge, thus cause strainability to decline.
1.1) cloth is worn: passed with charger base part above plasma processing apparatus electrode successively by melt-blowing nonwoven, and passed by the charged conveying roller of charger.
2) plasma treatment: in open atmospheric environment, under room temperature, relative humidity 45%, voltage 200V, electric current 0.54A, output frequency 7.5KHz, carry out Cement Composite Treated by Plasma to melt-blowing nonwoven.
3) corona charging process: in open atmospheric environment, under room temperature, relative humidity 45%, voltage-30.0kV, electric current-0.71mA, electret distance 15cm, 5s in polarization time, the melt-blowing nonwoven after article on plasma process carries out corona charging process.
4) rolling: carry out rolling process to the melt-blowing nonwoven after polarization, rolling speed is 6.0m/min, obtains the melt-blowing nonwoven after the polarization of rolling.
Embodiment 5
Polarization process is carried out to melt-blowing nonwoven
1) equipment cleaning: respectively with ethanol by the electrode of plasma processing apparatus and the electrode of charger and charged conveying roller, deflector roll, roller bearing wiped clean, prevent the phenomenon that melt-blowing nonwoven punctures by point discharge, thus cause strainability to decline.
1.1) cloth is worn: passed with charger base part above plasma processing apparatus electrode successively by melt-blowing nonwoven, and passed by the charged conveying roller of charger.
1) plasma treatment: in open atmospheric environment, under room temperature, relative humidity 50%, voltage 250V, electric current 1.50A, output frequency 9.0KHz, carry out Cement Composite Treated by Plasma to melt-blowing nonwoven.
2) corona charging process: in open atmospheric environment, under room temperature, relative humidity 50%, voltage-50.0kV, electric current-1.00mA, electret distance 20cm, 10s in polarization time, the melt-blowing nonwoven after article on plasma process carries out corona charging process.
3) rolling: carry out rolling process to the melt-blowing nonwoven after polarization, rolling speed is 3.0m/min, obtains the melt-blowing nonwoven after the polarization of rolling.
Embodiment 6
Omit step 2), when other steps are identical, according to embodiment 1-5 conditional, the melt-blowing nonwoven without Cement Composite Treated by Plasma is processed respectively, obtain the control group 1-5 without Cement Composite Treated by Plasma respectively.
Melt-blowing nonwoven after the polarization that embodiment 1-5 is obtained and control group 1-5 adopt TSI8130 type filtrate testing board its to the filter efficiency of the NaCl particulate of 0.3 μm, its result is as shown in table 1 below:
Table 1, embodiment 1-5 and control group 1-5 filter efficiency contrast table
Embodiment 7
Senile experiment: control group 1-5 in the melt-blowing nonwoven after polarization in embodiment 1-5 and embodiment 6 is taken out after heat treatment 24h in 70 DEG C of baking ovens.
Adopt TSI8130 type filtrate testing board its to the filter efficiency of the NaCl particulate of 0.3 μm, its result is as shown in table 2 below:
Embodiment 1-5 and control group 1-5 filter efficiency contrast table after table 2, senile experiment
Known through above-mentioned Data Comparison, the present invention first utilizes plasma first to do suitable process to melt-blowing nonwoven, and then corona charging is carried out to melt-blowing nonwoven, because plasma bombardment introduces charge trap on the nearly surface of melt-blowing nonwoven, enhance the capture ability of melt-blowing nonwoven to iunjected charge, make inject the quantity of electric charge increase and the electric charge of capturing can be more stable storage, show good charge storage stability, thus improve the filter efficiency of melt-blowing nonwoven, and make melt-blowing nonwoven air filting material ageing resistace be improved significantly.
To one skilled in the art, according to technical scheme described above and design, other various corresponding change and deformation can be made, and all these change and deformation all should belong within the protection domain of the claims in the present invention.
Claims (9)
1. improve a method for melt-blowing nonwoven filter efficiency, comprise the following steps:
1) equipment cleaning;
2) plasma treatment: in open atmospheric environment, under room temperature, relative humidity 30-75%, carries out plasma treatment to melt-blowing nonwoven;
3) corona charging process: in open atmospheric environment, under room temperature, relative humidity 30-75%, the melt-blowing nonwoven after article on plasma process carries out corona charging process; Obtain the melt-blowing nonwoven after polarization.
2. the method improving melt-blowing nonwoven filter efficiency as claimed in claim 1, is characterized in that, also comprise step 4) rolling: rolling process is carried out to the melt-blowing nonwoven after polarization.
3. the as claimed in claim 2 method improving melt-blowing nonwoven filter efficiency, is characterized in that, described step 4) in rolling speed be 0.1 ~ 30.0m/min.
4. the method improving melt-blowing nonwoven filter efficiency as claimed in claim 1, it is characterized in that, described step 1) equipment cleaning is specially, respectively with ethanol by the electrode of plasma processing apparatus and the electrode of charger and charged conveying roller, deflector roll, roller bearing wiped clean.
5. the method improving melt-blowing nonwoven filter efficiency as claimed in claim 1, it is characterized in that, described step 1) and 2) between also comprise step 1.1) wear cloth: by melt-blowing nonwoven successively above plasma processing apparatus electrode and charger base part pass, and to be passed by the charged conveying roller of charger.
6. the method for the raising melt-blowing nonwoven filter efficiency as described in any one of Claims 1 to 5, it is characterized in that, described step 2) in plasma treatment appts running parameter be: voltage 100V ~ 700V, electric current 0.20A ~ 2.50A, output frequency 5.0KHz ~ 20.0KHz.
7. the as claimed in claim 6 method improving melt-blowing nonwoven filter efficiency, is characterized in that, described step 2) in plasma treatment appts running parameter be: voltage 150V ~ 250V, electric current 0.50A ~ 1.50A, output frequency 5.0KHz ~ 9.0KHz.
8. the method for the raising melt-blowing nonwoven filter efficiency as described in any one of Claims 1 to 5, it is characterized in that, described step 3) in charger running parameter be: voltage-10.0kV ~-150.0kV, electric current-0.20mA ~-3.00mA, electret distance 5cm ~ 25cm, 1s in polarization time ~ 300s.
9. the method improving melt-blowing nonwoven filter efficiency as claimed in claim 8, it is characterized in that, described step 3) in charger running parameter be: voltage-10.0kV ~-50.0kV, electric current-0.20mA ~-1.00mA, electret distance 10cm ~ 20cm, 1s in polarization time ~ 10s.
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| CN201510571807.5A CN105040401A (en) | 2015-09-09 | 2015-09-09 | Method for improving filter efficiency of melt-blowing non-woven fabric |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510571807.5A CN105040401A (en) | 2015-09-09 | 2015-09-09 | Method for improving filter efficiency of melt-blowing non-woven fabric |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111244264A (en) * | 2020-01-15 | 2020-06-05 | 山东大学 | PVDF film roll-to-roll composite polarization device and method |
| CN113737510A (en) * | 2021-09-30 | 2021-12-03 | 苏州怡风科技有限公司 | Surface treatment method for cold plasma high molecular polymer |
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| US6020097A (en) * | 1998-04-30 | 2000-02-01 | Eastman Kodak Company | Single layer bipolar electrophotographic element |
| CN1718909A (en) * | 2004-07-09 | 2006-01-11 | 卡尔弗罗伊登柏格两合公司 | Functional non-woven fabric,mfg.method and use thereof |
| CN101495690A (en) * | 2006-07-31 | 2009-07-29 | 3M创新有限公司 | Method for making shaped filtration articles |
| CN101495208A (en) * | 2006-07-31 | 2009-07-29 | 3M创新有限公司 | Monocomponent monolayer meltblown web and meltblowing apparatus |
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2015
- 2015-09-09 CN CN201510571807.5A patent/CN105040401A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6020097A (en) * | 1998-04-30 | 2000-02-01 | Eastman Kodak Company | Single layer bipolar electrophotographic element |
| CN1718909A (en) * | 2004-07-09 | 2006-01-11 | 卡尔弗罗伊登柏格两合公司 | Functional non-woven fabric,mfg.method and use thereof |
| CN101495690A (en) * | 2006-07-31 | 2009-07-29 | 3M创新有限公司 | Method for making shaped filtration articles |
| CN101495208A (en) * | 2006-07-31 | 2009-07-29 | 3M创新有限公司 | Monocomponent monolayer meltblown web and meltblowing apparatus |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111244264A (en) * | 2020-01-15 | 2020-06-05 | 山东大学 | PVDF film roll-to-roll composite polarization device and method |
| CN111244264B (en) * | 2020-01-15 | 2023-04-18 | 山东大学 | PVDF film roll-to-roll composite polarization device and method |
| CN113737510A (en) * | 2021-09-30 | 2021-12-03 | 苏州怡风科技有限公司 | Surface treatment method for cold plasma high molecular polymer |
| CN113737510B (en) * | 2021-09-30 | 2024-02-23 | 昆山豆奇电子科技有限公司 | Cold state plasma high molecular polymer surface treatment method |
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Application publication date: 20151111 |