CN211133264U - Woven fabric subjected to acid-proof treatment - Google Patents
Woven fabric subjected to acid-proof treatment Download PDFInfo
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- CN211133264U CN211133264U CN201921031892.6U CN201921031892U CN211133264U CN 211133264 U CN211133264 U CN 211133264U CN 201921031892 U CN201921031892 U CN 201921031892U CN 211133264 U CN211133264 U CN 211133264U
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- 239000002759 woven fabric Substances 0.000 title claims description 18
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 50
- 239000011737 fluorine Substances 0.000 claims abstract description 50
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 48
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 48
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000003365 glass fiber Substances 0.000 claims abstract description 41
- 239000000758 substrate Substances 0.000 claims abstract description 37
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 34
- 239000012982 microporous membrane Substances 0.000 claims abstract description 29
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 24
- 239000002253 acid Substances 0.000 claims abstract description 18
- 239000004744 fabric Substances 0.000 claims abstract description 15
- 239000004734 Polyphenylene sulfide Substances 0.000 claims description 39
- 229920000069 polyphenylene sulfide Polymers 0.000 claims description 39
- 239000000835 fiber Substances 0.000 claims description 27
- 239000011148 porous material Substances 0.000 claims description 14
- 108010081750 Reticulin Proteins 0.000 claims description 7
- 239000012528 membrane Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 22
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract description 10
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 abstract description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract description 8
- 238000012545 processing Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 239000002585 base Substances 0.000 description 12
- 239000011230 binding agent Substances 0.000 description 11
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 11
- 239000001023 inorganic pigment Substances 0.000 description 11
- 239000004094 surface-active agent Substances 0.000 description 11
- 239000000675 fabric finishing Substances 0.000 description 7
- 238000009962 finishing (textile) Methods 0.000 description 7
- 230000035699 permeability Effects 0.000 description 7
- 238000011056 performance test Methods 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 239000004902 Softening Agent Substances 0.000 description 4
- 231100001010 corrosive Toxicity 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229910019142 PO4 Inorganic materials 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 3
- 150000001412 amines Chemical class 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000002788 crimping Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 125000001153 fluoro group Chemical group F* 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000002074 melt spinning Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 125000005010 perfluoroalkyl group Chemical group 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical class [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- 239000010452 phosphate Chemical class 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000004671 silicon softener Substances 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 239000003518 caustics Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000012756 surface treatment agent Substances 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
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- Laminated Bodies (AREA)
- Filtering Materials (AREA)
Abstract
The utility model provides a woven cloth through acid-proof processing, woven cloth through acid-proof processing is laminated structure, and it includes a substrate layer, laminates in proper order the first polytetrafluoroethylene biaxial stretching microporous membrane of outside-in of substrate layer top, first PPS filter layer, first fluorine-containing acid-proof processing layer, and laminate in proper order the second polytetrafluoroethylene biaxial stretching microporous membrane of outside-in of substrate layer below, second PPS filter layer, second fluorine-containing acid-proof processing layer, wherein, fluorine-containing acid-proof processing layer does the rete that substrate layer flooding fluorine-containing acid-proof agent formed. The utility model discloses can not only make the glass fiber woven cloth resist the corruption of strong acid materials such as concentrated sulfuric acid, concentrated hydrochloric acid, hydrofluoric acid, can also guarantee the rigidity intensity and the filter effect that the glass fiber woven cloth.
Description
Technical Field
The utility model relates to a filter material technical field, concretely relates to woven cloth through acid-proof treatment.
Background
With the rapid development of modern industrial processes of countries in the world, environmental problems are increasingly highlighted. In the production process of the industries such as chemical industry, electric power, steel, metallurgy, waste incineration and the like, a large amount of high-temperature smoke dust can be generated, and the environment is seriously polluted. The power industry supports the rapid development of national economy, brings serious environmental pollution and is one of the main emission sources of industrial smoke dust.
The glass fiber filter material is widely used due to the advantages of high strength, stable size, high temperature resistance, high filtering efficiency and the like, but the glass fiber also has obvious defects, namely, the fiber is easy to be brittle, is not resistant to folding and abrasion and is easily corroded when meeting acid, and the defects seriously influence the service life of the glass fiber filter material.
In the prior art, after the glass fiber woven fabric is manufactured, a surface treatment agent is generally used for treating the glass fiber woven fabric, so that the overall performance of the glass fiber woven fabric is improved, and the service life of the glass fiber woven fabric is prolonged. However, in the actual use process, aiming at the working condition environment with complex smoke components, high temperature and high corrosivity, most of the glass fiber woven fabrics can only resist the corrosion of acid and alkali with common concentration, but can not resist the corrosion of strong acid substances such as concentrated sulfuric acid, concentrated hydrochloric acid, hydrofluoric acid and the like, and the defects of poor strong acid corrosion resistance and narrow application range exist.
Disclosure of Invention
The utility model aims at providing a machine through acid-proof processing weaves to the operating mode environment that flue gas composition is complicated, the temperature is high, corrosivity is big, can not only make the glass fiber machine weave resist the corruption of strong sour material such as concentrated sulfuric acid, concentrated hydrochloric acid, hydrofluoric acid, can also guarantee the rigidity intensity and the filter effect that the glass fiber machine weaves. The technical scheme of the utility model is realized like this:
The utility model provides a woven cloth through acid-proof treatment, woven cloth through acid-proof treatment is laminated structure, and it includes a substrate layer, laminates in proper order first polytetrafluoroethylene biaxial stretching microporous membrane, first PPS filter layer, the first fluorine-containing acid-proof treatment layer of outside-in above the substrate layer, and laminates in proper order outside-in second polytetrafluoroethylene biaxial stretching microporous membrane, second PPS filter layer, the second fluorine-containing acid-proof treatment layer of substrate layer below, wherein, fluorine-containing acid-proof treatment layer is the rete that the substrate layer soaks fluorine-containing acid-proof agent and forms, the PPS filter layer is the netted fibrous layer of weaving by the polyphenylene sulfide fibre, the substrate layer is the glass fiber body layer that ECR glass fiber warp interweaves with ECR glass fiber woof and constitutes;
The thickness of the PPS filter layer is 1.5-1.7 mu m; the thickness of the first polytetrafluoroethylene biaxial tension microporous membrane is 12-15 mu m, and the average pore diameter is 0.5-2.5 mu m; the second polytetrafluoroethylene biaxial stretching microporous membrane is 8-11 mu m in thickness and 2.5-3.5 mu m in average pore size.
Preferably, the first polytetrafluoroethylene biaxially oriented microporous membrane has a thickness of 12 μm and an average pore diameter of 0.6 μm; the thickness of the second polytetrafluoroethylene biaxial stretching microporous membrane is 8 mu m, and the average pore diameter is 2.2 mu m.
Preferably, the thickness of the PPS filter layer is 1.5 μm.
Preferably, the fluorine-containing acid inhibitor comprises a fluorine-containing fabric finishing agent, a softening agent, an inorganic pigment, a fluorocarbon surfactant, an acid-proof binder and softened water.
Preferably, the warp yarn of the substrate layer is made of the expanded ECR glass fiber and PTFE fiber blended yarn, and the weft yarn is made of the expanded ECR glass fiber and PTFE fiber blended yarn.
Preferably, the content of the PTFE fiber of the base material layer is controlled to be 56 wt% to 60 wt%.
Preferably, the specification of the ECR glass fiber is 120tex to 270 tex.
Preferably, the gram weight of each square meter of the substrate layer is 350-850 g, and the thickness is 0.2-10 mm.
Preferably, the gram weight of the substrate layer per square meter is 620g, and the thickness is 0.6 mm.
The utility model has the advantages that:
The utility model selects the fluoride-free and boron-free ECR alkali-free glass fiber to prepare the filtering base cloth, compared with the existing common glass fiber filtering, the filtering base cloth has excellent acid resistance, water resistance, stress corrosion resistance and short-term alkali resistance, and under the stress condition, the corrosion resistance advantage is more obvious;
The utility model discloses with the substrate layer through high acid-proof steeping liquor flooding, it has high acid-proof performance to crosslink into in fabric surface and fabric deep layer, the sour layer of handling of fluorine-containing acid-proof of high gas permeability, can form the molecular barrier around the fiber surface, can prevent the infiltration of water and various corrosives, compare with ordinary filter material, can block the acid material to permeate between the glass fiber silk bundle at to a great extent, avoid the acid material to destroy fibrous structure, with the cooperation of ECR glass fiber material, just make the ECR glass fiber machine that finally makes weave can resist the concentrated sulfuric acid, concentrated hydrochloric acid, the corruption of strong acid material such as hydrofluoric acid. Furthermore, the reticular PPS filter layer is arranged on the surface of the fluorine-containing acid-proof treatment layer, so that good filtering performance can be maintained in a severe environment, and the working efficiency is improved; through being equipped with polytetrafluoroethylene biaxial stretching microporous membrane at the surface, can resist the erosion of multiple high corrosive substance, can also improve dust removal effect, dust collection efficiency is high, can reduce environmental pollution effectively, improves atmospheric environment, has also improved its life simultaneously.
The present invention will be further explained with reference to the drawings and examples.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of the present invention.
Wherein, 1, a first polytetrafluoroethylene biaxial stretching microporous membrane; 2. a first PPS filter layer; 3. a first fluorine-containing acid resistant treatment layer; 4. a substrate layer; 5. a second fluorine-containing acid resistant treatment layer; 6. a second PPS filter layer; 7. and a second polytetrafluoroethylene biaxially oriented microporous membrane.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
As shown in fig. 1, the present embodiment provides an acid-proof treated woven fabric, which is a layered structure and includes a substrate layer 4, a first polytetrafluoroethylene biaxially oriented microporous membrane 1, a first PPS filter layer 2, a first fluorine-containing acid-proof treatment layer 3 sequentially attached to the outside-in above the substrate layer 4, and a second polytetrafluoroethylene biaxially oriented microporous membrane 7, a second PPS filter layer 6, and a second fluorine-containing acid-proof treatment layer 5 sequentially attached to the outside-in below the substrate layer 4, wherein the fluorine-containing acid-proof treatment layer is a membrane layer formed by impregnating the substrate layer 4 with a fluorine-containing acid-proof agent. The thickness of the first polytetrafluoroethylene biaxial tension microporous membrane 1 is 12 mu m, and the average pore diameter is 0.5 mu m; the thickness of the second polytetrafluoroethylene biaxial stretching microporous membrane 7 is 8 mu m, and the average pore diameter is 2.5 mu m.
The fluorine-containing acid-proof agent comprises a fluorine-containing fabric finishing agent, a softening agent, an inorganic pigment, a fluorocarbon surfactant, an acid-proof binder and softened water. Wherein, the fluorine-containing acid-proof agent is fluorine-containing fabric finishing agent which is fluorine-containing alkyl compound (polymer) and mainly comprises perfluoroalkyl compound (perfluoroalkyl substituted amine, quaternary ammonium salt, phosphate, etc.). For example, AG-480 fluorine-containing acid-proof finishing agent developed by Asahi glass company, Japan, was used. The acid-proof binder is a polyurethane binder, the softener is a high-temperature-resistant organic silicon softener, the inorganic pigment is a conventional inorganic pigment sold in the market, and the fluorocarbon surfactant is a conventional fluorocarbon surfactant sold in the market.
The base material layer 4 is a glass fiber and PTFE fiber blending bulk cloth layer formed by interweaving warp yarns and weft yarns. Warp yarns of the base material layer 4 are made of expanded ECR glass fiber and PTFE fiber blended yarns, and weft yarns are made of expanded ECR glass fiber and PTFE fiber blended yarns. The content of the PTFE fiber of the base material layer 4 is controlled to be 60 wt%. The specification of the ECR glass fiber is 120 tex. The gram weight of each square meter of the substrate layer is 620g, and the thickness is 0.6 mm.
The PPS filter layer is a reticular fiber layer woven by polyphenylene sulfide fibers, and the thickness of the reticular fiber layer is 1.5 mu m. Polyphenylene sulfide fibers, are produced from polyphenylene sulfide (PPS) resin by a conventional melt spinning process, followed by post-drawing, crimping and cutting at high temperatures.
the performance test results of the product (not soaked in concentrated sulfuric acid) in the first example are 3502N for warp-wise tensile strength, 3337N for weft-wise tensile strength and 21.9L/m 2.s for air permeability.
the performance test results of the product (soaked in concentrated sulfuric acid for 10 days) in the first example are that the warp stretching strength is 3002N, the weft stretching strength is 2937N, and the air permeability is 17.91L/m 2. s.
Wherein the acidic corrosive environment is H with the mass fraction of 15% 2SO4。
Example 2
As shown in fig. 1, the present embodiment provides an acid-proof treated woven fabric, the acid-proof treated woven fabric is a layered structure, and includes a substrate layer 4, a first polytetrafluoroethylene biaxially oriented microporous membrane 1, a first PPS filter layer 2, a first fluorine-containing acid-proof treatment layer 3 sequentially attached to the outside-in above the substrate layer 4, and a second polytetrafluoroethylene biaxially oriented microporous membrane 7, a second PPS filter layer 6, a second fluorine-containing acid-proof treatment layer 5 sequentially attached to the outside-in below the substrate layer 4, wherein the fluorine-containing acid-proof treatment layer is a membrane layer formed by impregnating the substrate layer 4 with a fluorine-containing acid-proof agent. The thickness of the first polytetrafluoroethylene biaxial tension microporous membrane 1 is 15 mu m, and the average pore diameter is 2.5 mu m; the thickness of the second polytetrafluoroethylene biaxial stretching microporous membrane 7 is 11 mu m, and the average pore diameter is 3.5 mu m.
The fluorine-containing acid-proof agent comprises a fluorine-containing fabric finishing agent, a softening agent, an inorganic pigment, a fluorocarbon surfactant, an acid-proof binder and softened water. Wherein, the fluorine-containing acid-proof agent is fluorine-containing fabric finishing agent which is fluorine-containing alkyl compound (polymer) and mainly comprises perfluoroalkyl compound (perfluoroalkyl substituted amine, quaternary ammonium salt, phosphate, etc.). For example, AG-480 fluorine-containing acid-proof finishing agent developed by Asahi glass company, Japan, was used. The acid-proof binder is a polyurethane binder, the softener is a high-temperature-resistant organic silicon softener, the inorganic pigment is a conventional inorganic pigment sold in the market, and the fluorocarbon surfactant is a conventional fluorocarbon surfactant sold in the market.
The base material layer 4 is a glass fiber and PTFE fiber blending bulk cloth layer formed by interweaving warp yarns and weft yarns. Warp yarns of the base material layer 4 are made of expanded ECR glass fiber and PTFE fiber blended yarns, and weft yarns are made of expanded ECR glass fiber and PTFE fiber blended yarns. The content of the PTFE fiber of the base material layer 4 was controlled to 56 wt%. The specification of the ECR glass fiber is 270 tex. The gram weight of the substrate layer 4 per square meter is 620g, and the thickness is 0.6 mm.
The PPS filter layer is a reticular fiber layer woven by polyphenylene sulfide fibers, and the thickness of the reticular fiber layer is 1.7 mu m. Polyphenylene sulfide fibers, are produced from polyphenylene sulfide (PPS) resin by a conventional melt spinning process, followed by post-drawing, crimping and cutting at high temperatures.
the performance test results of the product (not soaked in concentrated sulfuric acid) in the second example are that the warp stretching strength is 3395N, the weft stretching strength is 3374N, and the air permeability is 25.7L/m 2. s.
the performance test results of the product in example II (soaked in concentrated sulfuric acid for 10 days) are 3102N for warp stretching strength, 2927N for weft stretching strength and 16.91L/m 2.s for air permeability.
Wherein the acidic corrosive environment is H with the mass fraction of 15% 2SO4。
Example 3
As shown in fig. 1, the present embodiment provides an acid-proof treated woven fabric, which is a layered structure and includes a substrate layer 4, a first polytetrafluoroethylene biaxially oriented microporous membrane 1, a first PPS filter layer 2, a first fluorine-containing acid-proof treatment layer 3 sequentially bonded to the outside-in above the substrate layer 4, and a second polytetrafluoroethylene biaxially oriented microporous membrane 7, a second PPS filter layer 6, and a second fluorine-containing acid-proof treatment layer 5 sequentially bonded to the outside-in below the substrate layer 4, wherein the fluorine-containing acid-proof treatment layer is a membrane layer formed by impregnating the substrate layer 4 with a fluorine-containing acid-proof agent. The thickness of the first polytetrafluoroethylene biaxial tension microporous membrane 1 is 12 mu m, and the average pore diameter is 0.6 mu m; the thickness of the second polytetrafluoroethylene biaxial stretching microporous membrane 7 is 8 mu m, and the average pore diameter is 2.2 mu m.
The fluorine-containing acid-proof agent comprises a fluorine-containing fabric finishing agent, a softening agent, an inorganic pigment, a fluorocarbon surfactant, an acid-proof binder and softened water. Wherein, the fluorine-containing acid-proof agent is fluorine-containing fabric finishing agent which is fluorine-containing alkyl compound (polymer) and mainly comprises perfluoroalkyl compound (perfluoroalkyl substituted amine, quaternary ammonium salt, phosphate, etc.). For example, AG-480 fluorine-containing acid-proof finishing agent developed by Asahi glass company, Japan, was used. The acid-proof binder is a polyurethane binder, the softener is a high-temperature-resistant organic silicon softener, the inorganic pigment is a conventional inorganic pigment sold in the market, and the fluorocarbon surfactant is a conventional fluorocarbon surfactant sold in the market. The inorganic pigment has an antistatic effect, static charges are accumulated on the surface of the tissue material, and the blockage of micropores of the filter material is avoided; the fluorocarbon surfactant can reduce the surface tension of the surface treating agent, so that the treating agent substance can be better impregnated and coated on the surface of the glass fiber; the acid-proof binder can improve the binding capacity of each component substance and the surface of the glass fiber.
The base material layer 4 is a glass fiber and PTFE fiber blending bulk cloth layer formed by interweaving warp yarns and weft yarns. Warp yarns of the base material layer 4 are made of expanded ECR glass fiber and PTFE fiber blended yarns, and weft yarns are made of expanded ECR glass fiber and PTFE fiber blended yarns. The content of the PTFE fiber of the base material layer 4 was controlled to 56 wt%. The specification of the ECR glass fiber is 120 tex. The gram weight of the substrate layer 4 per square meter is 620g, and the thickness is 0.6 mm.
The PPS filter layer is a reticular fiber layer woven by polyphenylene sulfide fibers, and the thickness of the reticular fiber layer is 1.5 mu m. Polyphenylene sulfide fibers, are produced from polyphenylene sulfide (PPS) resin by a conventional melt spinning process, followed by post-drawing, crimping and cutting at high temperatures.
the performance test results of the product (not soaked in concentrated sulfuric acid) in the third example are that the warp stretching strength is 3215N, the weft stretching strength is 3188N, and the air permeability is 18.8L/m 2. s.
the performance test results of the product (soaked in concentrated sulfuric acid environment for 10 days) in the third example are that the warp stretching strength is 2702N, the weft stretching strength is 2527N, and the air permeability is 11.91L/m 2. s.
Wherein the acidic corrosive environment is H with the mass fraction of 15% 2SO4。
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The woven fabric subjected to acid-proof treatment is of a laminated structure and comprises a substrate layer, a first Polytetrafluoroethylene (PTFE) biaxially oriented microporous membrane, a first PPS (polyphenylene sulfide) filter layer, a first fluorine-containing acid-proof treatment layer, a second PTFE biaxially oriented microporous membrane, a second PPS filter layer and a second fluorine-containing acid-proof treatment layer, wherein the first PTFE biaxially oriented microporous membrane, the first PPS filter layer and the first fluorine-containing acid-proof treatment layer are sequentially attached to the upper part of the substrate layer, the second PPS filter layer and the second fluorine-containing acid-proof treatment layer are sequentially attached to the lower part of the substrate layer, the fluorine-containing acid-proof treatment layer is a membrane layer formed by impregnating the substrate layer with a fluorine-containing acid-proof agent, the PPS filter layer is a reticular fiber layer woven by polyphenylene sulfide fibers, and the substrate layer is a glass fiber bulk fabric layer formed by interweaving;
The thickness of the PPS filter layer is 1.5-1.7 mu m; the thickness of the first polytetrafluoroethylene biaxial tension microporous membrane is 12-15 mu m, and the average pore diameter is 0.5-2.5 mu m; the second polytetrafluoroethylene biaxial stretching microporous membrane is 8-11 mu m in thickness and 2.5-3.5 mu m in average pore size.
2. The acid resistant treated woven fabric of claim 1, wherein the first polytetrafluoroethylene biaxially oriented microporous film has a thickness of 12 μm and an average pore size of 0.6 μm; the thickness of the second polytetrafluoroethylene biaxial stretching microporous membrane is 8 mu m, and the average pore diameter is 2.2 mu m.
3. The acid resistant treated woven fabric according to claim 1, wherein the PPS filter layer has a thickness of 1.5 μm.
4. The acid resistant treated woven fabric of claim 1, wherein the warp yarns of the substrate layer are made of a bulked blend of ECR glass fibers and PTFE fibers, and the weft yarns are made of a bulked blend of ECR glass fibers and PTFE fibers.
5. The acid resistant treated woven fabric of claim 1, wherein the ECR glass fibers have a gauge of 120tex to 270 tex.
6. The acid-resistant treated woven fabric according to claim 1, wherein the substrate layer has a grammage of 350 to 850g per square meter and a thickness of 0.2 to 10 mm.
7. The acid-resistant treated woven fabric according to claim 6, wherein the substrate layer has a grammage of 620g and a thickness of 0.6 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921031892.6U CN211133264U (en) | 2019-07-03 | 2019-07-03 | Woven fabric subjected to acid-proof treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921031892.6U CN211133264U (en) | 2019-07-03 | 2019-07-03 | Woven fabric subjected to acid-proof treatment |
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| Publication Number | Publication Date |
|---|---|
| CN211133264U true CN211133264U (en) | 2020-07-31 |
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| CN201921031892.6U Expired - Fee Related CN211133264U (en) | 2019-07-03 | 2019-07-03 | Woven fabric subjected to acid-proof treatment |
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