CN109621748A - The preparation method of low-resistance coated filter material - Google Patents
The preparation method of low-resistance coated filter material Download PDFInfo
- Publication number
- CN109621748A CN109621748A CN201910012126.3A CN201910012126A CN109621748A CN 109621748 A CN109621748 A CN 109621748A CN 201910012126 A CN201910012126 A CN 201910012126A CN 109621748 A CN109621748 A CN 109621748A
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- Prior art keywords
- filter material
- coated filter
- woven fabrics
- preparation
- low
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/30—Polyalkenyl halides
- B01D71/32—Polyalkenyl halides containing fluorine atoms
- B01D71/36—Polytetrafluoroethene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/10—Supported membranes; Membrane supports
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Filtering Materials (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention provides a kind of preparation method of the coated filter material of lower resistance, filtration efficiency, and coated filter material includes three-decker, Teflon membranes, and immersion non-woven fabrics layer passes through adhesive and bonds between Teflon membranes and immersion non-woven fabrics layer.The characteristics of wherein immersion non-woven fabrics are played a supporting role, and such coated filter material is under 5.3cm/s flow velocity, resistance≤40Pa, filter efficiency >=95%, have both high-efficiency low-resistance.
Description
Technical field
The present invention relates to technical field of composite materials, and in particular to the air filtration material of a kind of lower resistance, filtration efficiency
Material.
Background technique
Polytetrafluoroethylene film filtrate is Teflon filtration film and the different bases of a kind of more micropores, dead smooth and hydrophobic
Material (such as Nomex or braided fabric) be combined there are many type filtering material.Consider from cost or air flux,
Polytetrafluoroethylene film should be high porosity, but thinner thickness (< 10 μm), then the mechanical performances such as stretch-proof of film are poor,
There must be corresponding backing material, it is enable really to apply.
Immersion non-woven fabrics have the characteristics that fluffy, homogeneous soft, intensity are good, prepare by the process of high-temperature process, tool
There is characteristic resistant to high temperature.By its with polytetrafluoroethylene film is laminating prepares laminating filtrate, can be under the filtering environment of high temperature
Using meeting filtration efficiency, the requirement of long-life.
Summary of the invention
The present invention is intended to provide the coated filter material of a kind of lower resistance, filtration efficiency, is mentioned with meeting in above-mentioned background technique
Technical requirements out.
The present invention provides the coated filter material of a kind of lower resistance, filtration efficiency, can be obtained by following steps:
By a certain proportion of PTFE powder with lubricating oil by being blended, stirring, cure, squeeze out, roll, dry, Zong Xiangla
It stretches, cross directional stretch, sintering shaping process obtain PTFE film；
It is by glue coating method, PTFE film and the progress of immersion non-woven fabrics layer is laminating.
Lubricating oil is Mobil oil, and ratio is 1:0.29 or 1:0.30.
Longitudinal stretching multiplying power is 10-14.
The supporting base material is immersion non-woven fabrics, the grammes per square metre scope 50-100g/m2。
The adhesive is the agent of polyisocyanates gluing.
The glue coating method, temperature at room temperature, roller gap be 0.2-0.5mm, speed 10-15m/s, when unreeling without
Power or compared with small tension receiving coil, winding tension is between 0.2-1.0.
Coated filter material of the present invention includes three-decker, and Teflon membranes, immersion non-woven fabrics layer, described is poly-
It is bonded between tetrafluoroethene film layer and immersion non-woven fabrics layer by adhesive, wherein immersion non-woven fabrics play the role of support.
Compared with prior art, coated filter material of the invention has the characteristics that lower resistance and filtration efficiency, in 5.3cm/s
Under flow velocity, resistance≤40Pa, filter efficiency >=95%.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the embodiment of the present invention.
Description of symbols: 1- Teflon membranes, 2- adhesive layer, 3- immersion non-woven fabrics layer.
Specific embodiment
For a further understanding of the present invention, the preferred embodiment of the invention is described below with reference to embodiment, still
It should be appreciated that these descriptions are only further explanation the features and advantages of the present invention, rather than to the claims in the present invention
Limitation.
Embodiment 1
By PTFE powder, 1:0.29 is adequately mixed in proportion with lubricating oil.
Curing temperature is 45 DEG C, curing time 16h, by squeezing out, rolling, after dry, and longitudinal stretching multiplying power selection 10
Times, the upper folder width 2.5cm of cross directional stretch film obtains PTFE film.
It is covered by glue, PTFE is film adhered on terylene immersion non-woven fabrics surface, and the deposited condition of glue is roller gap
0.2mm unreels no-station pole canopy, winding tension 0.3, and speed is initially 10m/s, then improves to 15m/s.
The coated filter material that the present embodiment obtains, resistance is low, and filter efficiency is high.
Embodiment 2
By PTFE powder, 1:0.29 is adequately mixed in proportion with lubricating oil.
Curing temperature is 45 DEG C, curing time 16h, by squeezing out, rolling, after dry, and longitudinal stretching multiplying power selection 10
Times, the upper folder width 2.5cm of cross directional stretch film obtains PTFE film.
It is covered by glue, PTFE is film adhered on terylene immersion non-woven fabrics surface, and the deposited condition of glue is roller gap
0.2mm unreels no-station pole canopy, winding tension 0.7, and speed is initially 10m/s, then improves to 15m/s.
The coated filter material that the present embodiment obtains, resistance is low, and filter efficiency is high, and bonding firmness is high.
Embodiment 3
By PTFE powder, 1:0.30 is adequately mixed in proportion with lubricating oil.
Curing temperature is 45 DEG C, curing time 16h, by squeezing out, rolling, after dry, and longitudinal stretching multiplying power selection 10
Times, the upper folder width 2.5cm of cross directional stretch film obtains PTFE film.
It is covered by glue, PTFE is film adhered on terylene immersion non-woven fabrics surface, and the deposited condition of glue is roller gap
0.2mm unreels no-station pole canopy, winding tension 0.3, and speed is initially 10m/s, then improves to 15m/s.
The coated filter material that the present embodiment obtains, resistance is low, and filter efficiency is high.
Embodiment 4
By PTFE powder, 1:0.30 is adequately mixed in proportion with lubricating oil.
Curing temperature is 45 DEG C, curing time 16h, by squeezing out, rolling, after dry, and longitudinal stretching multiplying power selection 10
Times, the upper folder width 2.5cm of cross directional stretch film obtains PTFE film.
It is covered by glue, PTFE is film adhered on terylene immersion non-woven fabrics surface, and the deposited condition of glue is roller gap
0.2mm unreels no-station pole canopy, winding tension 0.7, and speed is initially 10m/s, then improves to 15m/s.
The coated filter material that the present embodiment obtains, resistance is low, and filter efficiency is high.
Embodiment 5
By PTFE powder, 1:0.29 is adequately mixed in proportion with lubricating oil.
Curing temperature is 45 DEG C, curing time 16h, by squeezing out, rolling, after dry, and longitudinal stretching multiplying power selection 12
Times, the upper folder width 3cm of cross directional stretch film obtains PTFE film.
It is covered by glue, PTFE is film adhered on terylene immersion non-woven fabrics surface, and the deposited condition of glue is roller gap
0.2mm unreels no-station pole canopy, winding tension 0.3, and speed is initially 10m/s, then improves to 15m/s.
The coated filter material that the present embodiment obtains, resistance is low, and filter efficiency is high.
Embodiment 6
By PTFE powder, 1:0.30 is adequately mixed in proportion with lubricating oil.
Curing temperature is 45 DEG C, curing time 16h, by squeezing out, rolling, after dry, and longitudinal stretching multiplying power selection 12
Times, the upper folder width 3cm of cross directional stretch film obtains PTFE film.
It is covered by glue, PTFE is film adhered on terylene immersion non-woven fabrics surface, and the deposited condition of glue is roller gap
0.2mm unreels no-station pole canopy, winding tension 0.3, and speed is initially 10m/s, then improves to 15m/s.
The coated filter material that the present embodiment obtains, resistance is low, and filter efficiency is high.
The above description of the embodiment is only used to help understand the method for the present invention and its core ideas.It should be pointed out that pair
For those skilled in the art, without departing from the principle of the present invention, the present invention can also be carried out
Some improvements and modifications, these improvements and modifications also fall within the scope of protection of the claims of the present invention.
Claims (7)
1. a kind of preparation method of low-resistance coated filter material, it is characterised in that: the following steps are included:
A certain proportion of PTFE powder is mixed with lubricating oil by stirring, curing, extrusion, calendering, drying, longitudinal stretching, cross
PTFE film is obtained after to stretching, sintering shaping process；
It is by glue coating method, PTFE film and the progress of immersion non-woven fabrics layer is laminating.
The coated filter material includes three-decker, Teflon membranes, immersion non-woven fabrics layer, the polytetrafluoroethylene film
It is bonded between layer and immersion non-woven fabrics layer by adhesive, wherein immersion non-woven fabrics are played a supporting role.
2. the preparation method of low-resistance coated filter material according to claim 1, it is characterised in that: PTFE powder and lubricating oil
Ratio is 1:0.29 or is 1:0.30.
3. the preparation method of low-resistance coated filter material according to claim 1, it is characterised in that: the immersion non-woven fabrics layer
Terylene immersion non-woven fabrics or polyamide fibre immersion non-woven fabrics, the grammes per square metre scope 50-100g/m can be selected2。
4. the preparation method of low-resistance coated filter material according to claim 1, it is characterised in that: prepare the longitudinal direction of PTFE film
Stretching ratio is 10-14 times.
5. the preparation method of low-resistance coated filter material according to claim 1-4, it is characterised in that: the polytetrafluoro
Network structure of the vinyl film with hole interpenetrating, 0.2-2 μm of pore diameter range, 2-5 μm of film thickness range.
6. the preparation method of low-resistance coated filter material according to claim 1-4, it is characterised in that: the laminating side
Formula is that room temperature is laminating, and temperature is 18-35 DEG C.
7. the preparation method of low-resistance coated filter material according to claim 1-4, it is characterised in that: the gluing
Agent is the agent of polyisocyanates gluing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910012126.3A CN109621748A (en) | 2019-01-07 | 2019-01-07 | The preparation method of low-resistance coated filter material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910012126.3A CN109621748A (en) | 2019-01-07 | 2019-01-07 | The preparation method of low-resistance coated filter material |
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| Publication Number | Publication Date |
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| CN109621748A true CN109621748A (en) | 2019-04-16 |
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| CN201910012126.3A Pending CN109621748A (en) | 2019-01-07 | 2019-01-07 | The preparation method of low-resistance coated filter material |
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Citations (11)
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| CN104289041A (en) * | 2013-07-19 | 2015-01-21 | 苏州托普斯环保科技有限公司 | Five-layer structure of filtering material |
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| CN105561680A (en) * | 2009-07-22 | 2016-05-11 | 唐纳森公司 | Filter media construction using PTFE film and carbon web for HEPA efficiency and odor control |
| US20170028700A1 (en) * | 2012-09-06 | 2017-02-02 | Xamax Industries, Inc. | Composite sheet material and method for forming the same |
| CN106955529A (en) * | 2015-10-06 | 2017-07-18 | Jp空气技术公司 | Filter medium for removing particle from air-flow and production and preparation method thereof |
| CN107107546A (en) * | 2014-12-18 | 2017-08-29 | 阿莫绿色技术有限公司 | Moisture-permeability waterproof fabric and its manufacture method |
| CN206781154U (en) * | 2017-03-28 | 2017-12-22 | 昆山布鲁纳透气材料有限公司 | Anti-corrosion breathing pattern gasket seal |
| CN107875738A (en) * | 2017-12-27 | 2018-04-06 | 广西金邦泰科技有限公司 | A kind of composite filtering cloth |
| CN108057277A (en) * | 2017-12-26 | 2018-05-22 | 浙江金海环境技术股份有限公司 | Composite filter material and its manufacturing method |
| CN108434862A (en) * | 2018-03-06 | 2018-08-24 | 深圳市中建南方环境股份有限公司 | A kind of preparation method of antiacid alkali filtrate capable of washing |
| CN208216177U (en) * | 2018-03-07 | 2018-12-11 | 苏州维洛克电子科技有限公司 | A kind of corrosion-resistant PET film |
-
2019
- 2019-01-07 CN CN201910012126.3A patent/CN109621748A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105561680A (en) * | 2009-07-22 | 2016-05-11 | 唐纳森公司 | Filter media construction using PTFE film and carbon web for HEPA efficiency and odor control |
| US20170028700A1 (en) * | 2012-09-06 | 2017-02-02 | Xamax Industries, Inc. | Composite sheet material and method for forming the same |
| CN104289041A (en) * | 2013-07-19 | 2015-01-21 | 苏州托普斯环保科技有限公司 | Five-layer structure of filtering material |
| CN104415672A (en) * | 2013-08-21 | 2015-03-18 | 黄天宇 | High-filtering-precision polytetrafluoroethylene microporous membrane preparing method |
| CN107107546A (en) * | 2014-12-18 | 2017-08-29 | 阿莫绿色技术有限公司 | Moisture-permeability waterproof fabric and its manufacture method |
| CN106955529A (en) * | 2015-10-06 | 2017-07-18 | Jp空气技术公司 | Filter medium for removing particle from air-flow and production and preparation method thereof |
| CN206781154U (en) * | 2017-03-28 | 2017-12-22 | 昆山布鲁纳透气材料有限公司 | Anti-corrosion breathing pattern gasket seal |
| CN108057277A (en) * | 2017-12-26 | 2018-05-22 | 浙江金海环境技术股份有限公司 | Composite filter material and its manufacturing method |
| CN107875738A (en) * | 2017-12-27 | 2018-04-06 | 广西金邦泰科技有限公司 | A kind of composite filtering cloth |
| CN108434862A (en) * | 2018-03-06 | 2018-08-24 | 深圳市中建南方环境股份有限公司 | A kind of preparation method of antiacid alkali filtrate capable of washing |
| CN208216177U (en) * | 2018-03-07 | 2018-12-11 | 苏州维洛克电子科技有限公司 | A kind of corrosion-resistant PET film |
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Application publication date: 20190416 |