CN201889128U - Polytetrafluoroethylene coating film filter material - Google Patents
Polytetrafluoroethylene coating film filter material Download PDFInfo
- Publication number
- CN201889128U CN201889128U CN201020624099XU CN201020624099U CN201889128U CN 201889128 U CN201889128 U CN 201889128U CN 201020624099X U CN201020624099X U CN 201020624099XU CN 201020624099 U CN201020624099 U CN 201020624099U CN 201889128 U CN201889128 U CN 201889128U
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- filter material
- coating film
- filtrate
- felt
- ptfe
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Abstract
The utility model discloses polytetrafluoroethylene coating film filter material which is characterized in that the surface of each fiber of a terylene needled felt or a PPS (Polyphenylene sulfide) needled felt as a filter material primary felt is coated with a layer of polytetrafluoroethylene coating film, the whole surface of the filter material primary felt is coated with the polytetrafluoroethylene coating film, and the whole surface of the coating film where the filter material is distributed is arranged in a three-dimensional structure, so that the finish degree, the filtration precision, the corrosion resistance, the abrasion resistance, the acid and alkali resistance, the folding resistance and the inoxidizability of the surface of the coating film filter material are improved, the hydrophobicity of the filter material is reinforced, the soot cleaning effect is improved, the service life of the filter material is prolonged, and at the same time, the filtration precision of the filter material is improved.
Description
Technical field
The utility model relates to a kind of filtering material, particularly relates to a kind of polyfluortetraethylecoating coating film filter material.
Background technology
Filtering material is widely used in the dedusting field of high temperature flue gases such as smeltery, steel plant, chemical plant, waste incineration and highly corrosive flue gas, is the indispensable material of waste gas wastewater treatment.The filtrate that prior art is produced is substantially based on coated filter material, and its filtration resistance is higher, and gas permeability is relatively poor; The dust layer of filtrate need participate in filtering, and the pressure drop height has increased the blower fan power consumption; Deashing often, cleaning cycle is short, the investment of equipment and operating cost height; Its filter efficiency is low, and is rough, be difficult for the precoating ash, and coefficient of friction is higher, and the fissility during deashing is poor; Chemical resistance is relatively poor, non-refractory; To humidity and sticky dust, it is sticking more many more easily to produce the filter material surface dust, the phenomenon that cause and stick with paste bag, hardens, pressure reduction rises rapidly.
The utility model content
For solving the above-mentioned technical problem that prior art exists, the purpose of this utility model provides a kind of film filtering material that is coated with, adopt polytetrafluoroethylene (PTFE) to form filtrate coating, filtrate gas permeability height, filter efficiency height, resistance to chemical attack and the heat-resisting quantity height of production as coating agent.
Polytetrafluoroethylene PTFE is the polymer that is polymerized by tetrafluoroethylene monomer, and its density is 2.2g/cm
3, water absorption rate is less than 0.01%.Whole hydrogen atoms in the polyethylene are all replaced by fluorine atom.Because C-F key bond energy height, stable performance, thereby its chemical resistance is splendid, can bear alkali metal except fusion, fluorinated dielectric { TodayHot} and be higher than all strong acid 300 ℃ the NaOH, and the effect of strong oxidizer, reducing agent and various organic solvents; Can long-term work under 250 ℃ electric circumstance; Because of not having hydrogen bond in the PTFE molecular structure, symmetrical configuration, (general degree of crystallinity is 55%～75% so its degree of crystallinity is very high, sometimes up to 94%), make the PTFE heat resistance fabulous, its melt temperature is 324 ℃, decomposition temperature is 415 ℃, and maximum operation (service) temperature is 250 ℃.The good mechanical properties of PTFE, its hot strength are 21～28MPa, and bending strength is 11～14MPa, and percentage elongation is 250%～300%.Solid particle diameter in the PTFE aqueous liquid dispersion is generally 0.15～0.40 μ m, and in dispersion liquid, it exists with the emulsus form.As sneaking into chemical assistants such as crosslinking agent, coupling agent therein, with the water evaporates of dispersion liquid, through high temperature sintering, the solid granule of PTFE is coupled to each other can " conjunctiva ", and " non-stick pan " is exactly that this principle is produced.Because the significant chemistry of PTFE and physical characteristic and the easy conjunctiva under the condition of high temperature thereof, so it is first-selected filtering material coating agent.
The technical scheme that the utility model solution prior art weak point is taked is: a kind of polyfluortetraethylecoating coating film filter material, comprise filtrate felt just, filtrate just each root fiber surface coating one deck polytetrafluoroethylene (PTFE) of felt is filmed, and films at integral surface coating one deck polytetrafluoroethylene (PTFE) of the first felt of filtrate.
Described filtrate just felt is terylene Nomex or PPS Nomex.
Filtrate just the integral surface of felt apply one deck polytetrafluoroethylene (PTFE) and film, film the whole filtrate that is distributed in just in the three-D space structure on felt surface.
The beneficial effects of the utility model are:
Filtering material is after this plastics is handled, the surface of the whole distribution filter of related film felt is in three-D space structure, surface smoothness, filtering accuracy, corrosion-resistant, wear-resisting, resistance to acids and bases raising, folding, heat resistance, non-oxidizability improve, strengthened the hydrophobicity of filtrate, improve ash-removal effect, prolonged the service life of filtrate, improved the filtering accuracy of filtrate simultaneously.Be coated with film filtering material and compare with the performance characteristics of coated filter material, the more effective anti acid alkali performance that improves filtrate, anti-water, anti-compaction, non-oxidizability, wear-resisting folding resistance has prolonged service life of filtrate.
The coating filtrate has the incomparable advantage of coated filter material: (1) filtration resistance is low, good permeability, and Air permenbility reaches 8～12m
3/ m
2Min.Be coated with film filtering material by the surface filtration laying dust, the dust layer that need not ordinary filter participates in filtering, and pressure drop is low, saves the blower fan power consumption, reduces the deashing number of times and prolongs cleaning cycle, has effectively reduced the investment and the operating cost of equipment.(2) filter efficiency height, smooth surface and easy precoating ash, coefficient of friction is low, and the fissility during deashing is good.(3) chemical resistance is good, and is high temperature resistant.(4) to humidity and sticky dust, it produces the filter material surface dust unlike ordinary filter sticking more many more, the phenomenon that cause and stick with paste bag, hardens, pressure reduction rises rapidly.(5) the smooth and hydrophobicity of film coated surface even moist dust bonding is arranged, under the effect of deashing external force, also comes off easily, keeps filtration resistance steady.
Description of drawings
Fig. 1 is a cross-sectional view of the present utility model.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
The utility model polyfluortetraethylecoating coating film filter material as shown in Figure 1, with terylene Nomex or PPS Nomex as the first felt 1 of filtrate, be immersed in the deployed polytetrafluorethylecoatings coatings agent, make the first felt fiber 2 of each root filtrate all apply molecule emulsion polymerized poly coating agent.Bake and sintering through high temperature, make polytetrafluoroethylene (PTFE) conjunctiva on each root fiber, formation is filmed.With deployed polytetrafluorethylecoatings coatings agent, be evenly coated in the surface of filtrate again, bake and sintering through high temperature again, make the surperficial conjunctiva of polytetrafluoroethylene (PTFE), thereby film 3 at integral surface formation one deck polytetrafluoroethylene (PTFE) of the first felt of filtrate at filtrate.Film the whole filtrate that is distributed in just in the three-D space structure on felt surface.
The surface of the whole distribution filtrate of the film of this polyfluortetraethylecoating coating film filter material association is in three-D space structure, surface smoothness, filtering accuracy, corrosion-resistant, wear-resisting, resistance to acids and bases raising, folding, heat resistance, non-oxidizability improve, strengthened the hydrophobicity of filtrate, improve ash-removal effect, prolong the service life of filtrate, improved the filtering accuracy of filtrate simultaneously.
Claims (3)
1. a polyfluortetraethylecoating coating film filter material comprises filtrate felt just, it is characterized in that: filtrate just each root fiber surface coating one deck polytetrafluoroethylene (PTFE) of felt is filmed, and films at integral surface coating one deck polytetrafluoroethylene (PTFE) of the first felt of filtrate.
2. polyfluortetraethylecoating coating film filter material according to claim 1 is characterized in that: filtrate just felt is terylene Nomex or PPS Nomex.
3. polyfluortetraethylecoating coating film filter material according to claim 1 is characterized in that: filtrate just the integral surface of felt apply one deck polytetrafluoroethylene (PTFE) and film, film the whole filtrate that is distributed in just in the three-D space structure on felt surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020624099XU CN201889128U (en) | 2010-11-24 | 2010-11-24 | Polytetrafluoroethylene coating film filter material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020624099XU CN201889128U (en) | 2010-11-24 | 2010-11-24 | Polytetrafluoroethylene coating film filter material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201889128U true CN201889128U (en) | 2011-07-06 |
Family
ID=44218603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020624099XU Expired - Lifetime CN201889128U (en) | 2010-11-24 | 2010-11-24 | Polytetrafluoroethylene coating film filter material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201889128U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106083197A (en) * | 2016-06-12 | 2016-11-09 | 浙江理工大学 | A kind of preparation method of super-hydrophobic ceramic membrane materials |
| CN108434863A (en) * | 2018-04-02 | 2018-08-24 | 浙江富瑞森水刺无纺布有限公司 | Corrosion-resistant high grammes per square metre spun lacing filtrate and its preparation process |
| CN115253486A (en) * | 2022-08-16 | 2022-11-01 | 朗天科技股份有限公司 | High-wear-resistance dedusting filter material and preparation method thereof |
-
2010
- 2010-11-24 CN CN201020624099XU patent/CN201889128U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106083197A (en) * | 2016-06-12 | 2016-11-09 | 浙江理工大学 | A kind of preparation method of super-hydrophobic ceramic membrane materials |
| CN106083197B (en) * | 2016-06-12 | 2018-11-16 | 浙江理工大学 | A kind of preparation method of super-hydrophobic ceramic membrane materials |
| CN108434863A (en) * | 2018-04-02 | 2018-08-24 | 浙江富瑞森水刺无纺布有限公司 | Corrosion-resistant high grammes per square metre spun lacing filtrate and its preparation process |
| CN115253486A (en) * | 2022-08-16 | 2022-11-01 | 朗天科技股份有限公司 | High-wear-resistance dedusting filter material and preparation method thereof |
| CN115253486B (en) * | 2022-08-16 | 2023-06-13 | 朗天科技股份有限公司 | High-wear-resistance dust-removing filter material and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110706 |
|
| CX01 | Expiry of patent term | ||
| DD01 | Delivery of document by public notice |
Addressee: Patent director of Shanghai cogs filter material Co.,Ltd. Document name: Notice of expiration of patent right |
|
| DD01 | Delivery of document by public notice |