CN108057279A - A kind of PTFE membrane filter material and preparation method thereof - Google Patents
A kind of PTFE membrane filter material and preparation method thereof Download PDFInfo
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- CN108057279A CN108057279A CN201610986587.7A CN201610986587A CN108057279A CN 108057279 A CN108057279 A CN 108057279A CN 201610986587 A CN201610986587 A CN 201610986587A CN 108057279 A CN108057279 A CN 108057279A
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- ptfe
- nomex
- filter material
- membrane filter
- fluoropolymer
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- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims abstract description 75
- 239000004810 polytetrafluoroethylene Substances 0.000 title claims abstract description 75
- 239000000463 material Substances 0.000 title claims abstract description 39
- 239000012528 membrane Substances 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 229920000784 Nomex Polymers 0.000 claims abstract description 37
- 239000004763 nomex Substances 0.000 claims abstract description 36
- 230000004888 barrier function Effects 0.000 claims abstract description 28
- 239000000835 fiber Substances 0.000 claims abstract description 27
- 229920002313 fluoropolymer Polymers 0.000 claims abstract description 18
- 239000004811 fluoropolymer Substances 0.000 claims abstract description 18
- 238000005098 hot rolling Methods 0.000 claims abstract description 17
- 150000001875 compounds Chemical class 0.000 claims abstract description 14
- 239000012790 adhesive layer Substances 0.000 claims abstract description 8
- 238000003801 milling Methods 0.000 claims abstract description 7
- -1 polypropylene Polymers 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 10
- 239000007864 aqueous solution Substances 0.000 claims description 9
- 238000002844 melting Methods 0.000 claims description 9
- 230000008018 melting Effects 0.000 claims description 9
- 239000010410 layer Substances 0.000 claims description 7
- 238000009955 starching Methods 0.000 claims description 7
- 239000003995 emulsifying agent Substances 0.000 claims description 6
- 239000004743 Polypropylene Substances 0.000 claims description 5
- 229920001155 polypropylene Polymers 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 229920006231 aramid fiber Polymers 0.000 claims description 4
- 229920004933 Terylene® Polymers 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims description 3
- 239000002270 dispersing agent Substances 0.000 claims description 3
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 3
- 229920002620 polyvinyl fluoride Polymers 0.000 claims description 3
- 229920001780 ECTFE Polymers 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000000243 solution Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000004026 adhesive bonding Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 238000001914 filtration Methods 0.000 description 13
- 238000000576 coating method Methods 0.000 description 11
- 239000011248 coating agent Substances 0.000 description 10
- 239000011148 porous material Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 229920000728 polyester Polymers 0.000 description 7
- 239000000706 filtrate Substances 0.000 description 6
- 210000004379 membrane Anatomy 0.000 description 6
- 238000005215 recombination Methods 0.000 description 5
- 230000006798 recombination Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229920001038 ethylene copolymer Polymers 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical compound FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
- B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B37/1207—Heat-activated adhesive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/08—Special characteristics of binders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/10—Filtering material manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B37/1207—Heat-activated adhesive
- B32B2037/1215—Hot-melt adhesive
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind of PTFE membrane filter materials and preparation method thereof.The PTFE membrane filter material includes compound successively PTFE microporous barriers, fluoropolymer adhesive layer and Nomex bottom.Preparation method is：Fluoropolymer is coated on Nomex surface, Nomex top fiber surface is made to wrap up a layered low-surface energy adhesive, further by PTFE microporous barriers with coat hot roll it is pre- it is heated after roll seam together with fiber needled felt hot rolling into milling train, PTFE microporous barriers is made to have obtained abundant heating before compound, so as to improve the adherency fastness of PTFE microporous barriers and Nomex, and improve overlay film throughput rate.The present invention uses unique gluing and heat bonding technology, and PTFE microporous barriers are overlayed on needle punched filter material surface, obtains the high coated filter material of PTFE film adherency fastness, realizes efficient, low-resistance, the filter effect of long-life.
Description
Technical field
The present invention relates to a kind of PTFE membrane filter materials and preparation method thereof, belong to industrial filter material technology neck
Domain.
Background technology
With the fast development of countries in the world modernization industry process, environmental problem is increasingly prominent.Chemical industry, electric power, steel,
The industries such as metallurgy, waste incineration can generate substantial amounts of high-temperature smoke in process of production, and environment is caused seriously to pollute.For work
The high-temperature smoke generated in industry production, discharge measure of control has been formulated in countries in the world.The air that China was formulated in 1996 is dirty
It contaminates in object comprehensive discharge standard (GB 16297-1996), soot dust granule object is classified as one of major control object, by dust
Exit concentration is strictly defined as 50~100mg/m3.Recent years, China are more and more tighter to the emission request of atmosphere pollution.When
Before, Environmental Protection in China portion requires each industrial and mining enterprises' exhaust gas, dust emission concentration to be less than 30mg/m3, some places are even as low as
10mg/m3.This just proposes the filtering accuracy of filtering material very harsh requirement.
In order to meet this requirement, for sack cleaner, mostly covered at present using to Nomex filtrate progress surface
PTFE microporous barriers are overlayed on Nomex surface, improve the filtering accuracy of filtrate by the method for film process.The aperture of PTFE microporous barriers exists
Between 1-2 μm, after Nomex filtrate overlay film, filter efficiency and filtering accuracy can be increased dramatically.PTFE itself is one
Kind low-surface energy substance, the hydrophobicity of filtrate can be increased simultaneously by overlaying on filter material surface.High-humidity gas fume filtering in, particularly pair
In the big filtering operating mode of water capacity, the paste bag problem of filter bag can be mitigated significantly, reduce running resistance and filtering energy consumption.But by
Very thin (10 μm of ＜) in itself, the poor mechanical property in PTFE microporous barriers.If coating technique is unreasonable, easily produced in coating process
It is raw damaged, so as to influence its filtering accuracy and service life.Overlay film is substantially through upper glue bond or coating sintering at present
Both approaches, common upper viscose binder is difficult to cement the PTFE film of low-surface-energy, the service life of gained coated filter material
It is short；And due to the splendid heat resistance of PTFE microporous barriers itself, coating sintering method is not appropriate for all Nomex base fabrics, especially
It is the fiber needled felt of those temperature tolerances difference.
A kind of " preparation of PTFE coated filter material " patent of invention (Application No. 201510355401.3) is led to
It crosses and microporous teflon membran is subjected to the pre-heat treatment to remove surface electrostatic, terylene non-woven fabric progress flame calcination is located in advance
Reason, is then overlayed on the two together by the compound method of hot pressing, and gained coated filter material can realize efficient, low-resistance and long-life
Effect.Since the surface energy differential of polyester fiber and polytetrafluoroethylene film is not big, the adherency fastness of polytetrafluoroethylene film there is also
Problem.
" woven coated filter material of coal-burning boiler high silica fiber and preparation method thereof " patent of invention (Application No.
201510058913.3), it is combined with each other by the way that the fabric after thermal finalization is introduced hot laminating machine with PTFE microporous membranes.Heat is covered
Film temperature is 300-350 DEG C, and overlay film speed is 3-6m/min.The speed of production of the process route is slow, and coated temperature is high, produces energy
Consumption is high.
The content of the invention
It is to be solved by this invention be existing polytetrafluoroethylene film adherency fastness it is not high, speed of production is slow, energy consumption
The problem of high.
To solve the above-mentioned problems, the present invention provides a kind of polytetrafluoroethylene (PTFE) (PTFE) coated filter materials, which is characterized in that
Including PTFE microporous barriers compound successively, fluoropolymer adhesive layer and Nomex bottom.
Preferably, the Nomex by any one in aramid fiber, PPS, PSA fiber, glass, terylene, acrylic and polypropylene fibre or
Several fiber compositions.
Preferably, the fluoropolymer adhesive layer for polyvinyl fluoride, Kynoar, PFA plastics, chlorotrifluoroethylene-
Any one or a few in the low melting fluoropolymers such as ethylene copolymer and tetrafluoraoethylene-hexafluoropropylene copolymer.
Preferably, the fluoropolymer-containing melting temperature is less than the melting temperature of Nomex fiber.
The present invention also provides the preparation methods of above-mentioned PTFE membrane filter material, which is characterized in that specific steps are such as
Under：
The first step：One layer of fluoropolymer-containing aqueous solution is coated on Nomex surface as adhesive layer, starching amount is 15-
30g/m2；
Second step：The Nomex that the first step is obtained is sent into preliminary drying 2-4 minutes in baking oven, makes fluoropolymer melt, together
When the volatile component in binder solution is made to volatilize；
3rd step：By PTFE microporous barriers by coat hot roll it is pre- it is heated in a manner of be sent into temperature as 250-300 DEG C of hot rolling
In machine；
4th step：The Nomex that second step is obtained is sent into hot-rolling mill, with the PTFE microporous barriers that are preheated through roll in 1-
It is compound under the pressure of 2Mpa；
5th step：The PTFE coated filter materials feeding up- coiler that 4th step is obtained is coiled, becomes final products.
Preferably, in the first step solid content of fluoropolymer aqueous solution for 20-30%, dispersant or emulsifier
Mass content is 8-10%.
Preferably, in the second step baking oven temperature be less than Nomex fiber melting temperature, higher than fluoropolymer
Melting temperature.
It is highly preferred that the temperature of the baking oven is set to 180-260 DEG C.
Preferably, the mode of PTFE microporous barriers feeding hot-rolling mill is specially in the 3rd step：Hot roll top is clockwise
It rolls, PTFE microporous barriers are wrapped up from left to right from the top on hot roll top；Nomex right-to-left is transmitted to hot roll
When intermediate, PTFE microporous barriers are overlying on Nomex.
Preferably, speed compound in the 4th step is 10-20m/min.
PTFE microporous barriers are overlayed on needle punched filter material surface, are obtained by the present invention using unique gluing and heat bonding technology
The high coated filter material of PTFE film adherency fastness, realizes efficient, low-resistance, the filter effect of long-life.
Description of the drawings
Fig. 1 is the composite construction schematic diagram of PTFE membrane filter material provided by the invention；
Fig. 2 is schematic diagram when Nomex passes through hot-rolling mill with PTFE microporous barriers；
In figure：1-PTFE films；2- hot rolls, 3- Nomexs；4- fluoropolymer adhesive layers.
Specific embodiment
To be clearer and more comprehensible the present invention, hereby with preferred embodiment, and attached drawing is coordinated to be described in detail below.
Embodiment 1
The first step：As shown in Figure 1, it is 600g/m in surface density2, thickness be 2.0mm polyester fiber 3 surface of Nomex
One layer of solid content of coating is 30%, the polyvinyl fluoride aqueous solution that dispersant mass content is 10%, and starching amount is 30g/m2；
Second step：The coating processing polyester fiber Nomex 3 that the first step obtains is sent into pre- in the baking oven that temperature is 195 DEG C
It dries 4 minutes；
3rd step：Thickness is 4 μm, average pore size is 2 μm PTFE microporous barriers 1 is pre- heated to coat milling train hot roll 2
Mode to be sent into temperature be in 300 DEG C of hot-rolling mill；
4th step：The drying Nomex 3 that second step obtains is sent into hot-rolling mill, it is micro- with the PTFE of hot rolled roller 2 preheating
Pore membrane 1 is compound under the pressure of 1Mpa, recombination velocity 10m/min；
5th step：The PTFE coated filter materials feeding up- coiler that 4th step is obtained is coiled, obtains PTFE overlay film polyester fibers
Needle punched filter material (its structure is as shown in Figure 1), surface density 600g/m2, filtering accuracy be 2 μm.
Embodiment 2
The first step：It is 550g/m in surface density2, 3 surface of acryl fibre prickling felt that thickness is 2.2mm coat one layer it is solid
The polyvinylidene fluoride aqueous solution that content is 25%, emulsifier mass content is 9%, starching amount are 15g/m2；
Second step：The coating processing acryl fibre prickling felt 3 that the first step obtains is sent into the baking oven that temperature is 180 DEG C
Preliminary drying 2 minutes；
3rd step：By thickness is 5 μm, average pore size is 2.5 μm PTFE microporous barriers 1 with coat milling train hot roll 2 in advance by
The mode of heat is sent into the hot-rolling mill that temperature is 250 DEG C；
4th step：The drying Nomex 3 that second step obtains is sent into hot-rolling mill, it is micro- with the PTFE of hot rolled roller 2 preheating
Pore membrane 1 is compound under the pressure of 2Mpa, recombination velocity 20m/min；
5th step：The PTFE coated filter materials feeding up- coiler that 4th step is obtained is coiled, obtains PTFE overlay films acrylic fibre
Tie up needle punched filter material, surface density 550g/m2, filtering accuracy be 2 μm.
Embodiment 3
The first step：It is 500g/m in surface density2, thickness be 2.0mm 3 surface of aramid fiber Nomex coat one layer contain admittedly
The chlorotrifluoroethylene-ethylene copolymer aqueous solution for being 10% for 20%, emulsifier mass content is measured, starching amount is 15g/m2；
Second step：The coating processing acryl fibre prickling felt 3 that the first step obtains is sent into the baking oven that temperature is 260 DEG C
Preliminary drying 4 minutes；
3rd step：By thickness is 4 μm, average pore size is 1.5 μm PTFE microporous barriers 1 with coat milling train hot roll 2 in advance by
The mode of heat is sent into the hot-rolling mill that temperature is 300 DEG C；
4th step：The drying Nomex 3 that second step obtains is sent into hot-rolling mill, it is micro- with the PTFE of hot rolled roller 2 preheating
Pore membrane 1 is compound under the pressure of 1.5Mpa, recombination velocity 15m/min；
5th step：The PTFE coated filter materials feeding up- coiler that 4th step is obtained is coiled, obtains PTFE overlay film aramid fibers
Needle punched filter material, surface density 500g/m2, filtering accuracy be 1.5 μm.
Embodiment 4
The first step：It is 500g/m in surface density2, thickness be 2.0mm 3 surface of PPS fiber needled felts coat one layer contain admittedly
Tetrafluoraoethylene-hexafluoropropylene copolymer (hexafluoropropene content the is 26%) aqueous solution for being 9% for 25%, emulsifier content is measured,
Its starching amount is 15g/m2；
Second step：The coating processing PPS fiber needled felts 3 that the first step obtains are sent into pre- in the baking oven that temperature is 250 DEG C
It dries 3 minutes；
3rd step：By thickness is 4 μm, average pore size is 2.0 μm PTFE microporous barriers 1 with coat milling train hot roll 2 in advance by
The mode of heat is sent into the hot-rolling mill that temperature is 280 DEG C；
4th step：The drying Nomex that second step is obtained is sent into hot-rolling mill, the PTFE micropores with the preheating of hot rolled roller 2
Film 1 is compound under the pressure of 1.5Mpa, recombination velocity 20m/min；
5th step：The PTFE coated filter materials feeding up- coiler that 4th step is obtained is coiled, obtains PTFE overlay film PPS fiber needles
Pierce filtrate, surface density 500g/m2, filtering accuracy be 2.0 μm.
Embodiment 5
The first step：It is 580g/m in surface density2, thickness be 2.3mm weight proportion be 80/20 Polyester/Polypropylene fiber
3 surface of Nomex, one layer of solid content of coating is 20%, the polyvinylidene fluoride aqueous solution that emulsifier content is 10%, and starching amount is
25g/m2；
Second step：The coating processing Polyester/Polypropylene fiber needled felt 3 that the first step obtains is sent into the baking that temperature is 180 DEG C
Preliminary drying 2 minutes in case；
3rd step：By thickness is 5 μm, average pore size is 2.5 μm PTFE microporous barriers 1 with coat milling train hot roll 2 in advance by
The mode of heat is sent into the hot-rolling mill that temperature is 290 DEG C；
4th step：The drying Nomex 3 that second step obtains is sent into hot-rolling mill, it is micro- with the PTFE of hot rolled roller 2 preheating
Pore membrane 1 is compound under the pressure of 2Mpa, recombination velocity 15m/min；
5th step：The PTFE coated filter materials feeding up- coiler that 4th step is obtained is coiled, obtains PTFE overlay film Polyester/Polypropylenes
Fibre prickling filtrate, surface density 580g/m2, filtering accuracy be 2.5 μm.
Claims (10)
1. a kind of PTFE membrane filter material, which is characterized in that including PTFE microporous barriers (1) compound successively, fluoropolymer
Object adhesive layer (4) and Nomex (3) bottom.
2. PTFE membrane filter material as described in claim 1, which is characterized in that the Nomex (3) by aramid fiber, PPS,
Any one or a few fiber forms in PSA fiber, glass, terylene, acrylic and polypropylene fibre.
3. PTFE membrane filter material as described in claim 1, which is characterized in that the fluoropolymer adhesive layer (4)
For polyvinyl fluoride, Kynoar, PFA plastics, chlorotrifluoroethylene-ethylene copolymer and tetrafluoraoethylene-hexafluoropropylene copolymer
In any one or a few.
4. the PTFE membrane filter material as described in claim 1 or 3, which is characterized in that the fluoropolymer-containing melting
Temperature is less than the melting temperature of Nomex fiber.
A kind of 5. preparation method of the PTFE membrane filter material described in claim 1-4 any one, which is characterized in that tool
Body step is as follows：
The first step：One layer of fluoropolymer-containing aqueous solution is coated on Nomex (3) surface as adhesive layer, starching amount is 15-
30g/m2；
Second step：The Nomex (3) that the first step is obtained is sent into preliminary drying 2-4 minutes in baking oven, makes fluoropolymer melt, simultaneously
The volatile component in binder solution is made to volatilize；
3rd step：By PTFE microporous barriers (1) by coat hot roll (2) it is pre- it is heated in a manner of be sent into temperature as 250-300 DEG C of heat
In milling train；
4th step：The Nomex (3) that second step is obtained is sent into hot-rolling mill, is existed with the PTFE microporous barriers (1) preheated through roll
It is compound under the pressure of 1-2Mpa；
5th step：The PTFE coated filter materials feeding up- coiler that 4th step is obtained is coiled, becomes final products.
6. the preparation method of PTFE membrane filter material as claimed in claim 5, which is characterized in that contain in the first step
The solid content of fluoropolymer aqueous solution is 20-30%, and the mass content of dispersant or emulsifier is 8-10%.
7. the preparation method of PTFE membrane filter material as claimed in claim 5, which is characterized in that dried in the second step
The temperature of case is less than the melting temperature of Nomex fiber, higher than fluoropolymer-containing melting temperature.
8. the preparation method of PTFE membrane filter material as claimed in claim 7, which is characterized in that the temperature of the baking oven
It is set to 180-260 DEG C.
9. the preparation method of PTFE membrane filter material as claimed in claim 5, which is characterized in that in the 3rd step
PTFE microporous barriers (1) be sent into hot-rolling mill mode be specially：Hot roll (2) top rolls clockwise, and PTFE microporous barriers (1) are certainly left
It is wrapped up from the top on hot roll (2) top to the right；When Nomex (3) right-to-left is transmitted among hot roll (2), PTFE
Microporous barrier (1) is overlying on Nomex (3).
10. the preparation method of PTFE membrane filter material as claimed in claim 5, which is characterized in that in the 4th step
Compound speed is 10-20m/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610986587.7A CN108057279A (en) | 2016-11-09 | 2016-11-09 | A kind of PTFE membrane filter material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610986587.7A CN108057279A (en) | 2016-11-09 | 2016-11-09 | A kind of PTFE membrane filter material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108057279A true CN108057279A (en) | 2018-05-22 |
Family
ID=62136964
Family Applications (1)
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|---|---|---|---|
| CN201610986587.7A Pending CN108057279A (en) | 2016-11-09 | 2016-11-09 | A kind of PTFE membrane filter material and preparation method thereof |
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| Country | Link |
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| CN (1) | CN108057279A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108819426A (en) * | 2018-07-05 | 2018-11-16 | 爱美克空气过滤器（苏州）有限公司 | A kind of polytetrafluoroethylfilter filter material set composite and preparation method thereof |
| CN109094171A (en) * | 2018-08-23 | 2018-12-28 | 合肥普尔德医疗用品有限公司 | The method that modified ptfe film and Woven Polyester Fabrics prepare laminated fabric |
| CN110763626A (en) * | 2019-10-30 | 2020-02-07 | 南京玻璃纤维研究设计院有限公司 | Method for detecting film-coating fastness of PTFE film-coated filter material and sample laminating machine |
| CN111111471A (en) * | 2020-01-14 | 2020-05-08 | 浙江开创环保科技股份有限公司 | PTFE hollow fiber composite membrane with high peel strength and preparation method thereof |
| CN112108007A (en) * | 2020-09-24 | 2020-12-22 | 中原工学院 | Polytetrafluoroethylene nanofiber filtering material and processing method thereof |
| WO2021189761A1 (en) | 2020-03-24 | 2021-09-30 | 中昊晨光化工研究院有限公司 | Polytetrafluoroethylene composite filter material, and preparation method therefor and application thereof |
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| CN110763626A (en) * | 2019-10-30 | 2020-02-07 | 南京玻璃纤维研究设计院有限公司 | Method for detecting film-coating fastness of PTFE film-coated filter material and sample laminating machine |
| CN111111471A (en) * | 2020-01-14 | 2020-05-08 | 浙江开创环保科技股份有限公司 | PTFE hollow fiber composite membrane with high peel strength and preparation method thereof |
| WO2021189761A1 (en) | 2020-03-24 | 2021-09-30 | 中昊晨光化工研究院有限公司 | Polytetrafluoroethylene composite filter material, and preparation method therefor and application thereof |
| CN112108007A (en) * | 2020-09-24 | 2020-12-22 | 中原工学院 | Polytetrafluoroethylene nanofiber filtering material and processing method thereof |
| CN112108007B (en) * | 2020-09-24 | 2022-07-26 | 中原工学院 | Polytetrafluoroethylene nanofiber filtering material and processing method thereof |
| CN113499644A (en) * | 2021-08-02 | 2021-10-15 | 江苏纤凯新材料有限公司 | Cold roll hot melting compound machine and tectorial membrane filter material production equipment thereof |
| CN113499644B (en) * | 2021-08-02 | 2022-11-18 | 江苏纤凯新材料有限公司 | Cold roll hot melting compound machine and tectorial membrane filter material production equipment thereof |
| CN114434055A (en) * | 2022-02-08 | 2022-05-06 | 开封锦科流量仪表有限公司 | Integrated into one piece equipment of electromagnetic flowmeter |
| CN115337722A (en) * | 2022-06-22 | 2022-11-15 | 南京玻璃纤维研究设计院有限公司 | One-step method membrane-coated filter material forming process and membrane-coated filter material |
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