CN106884325A - A kind of method that polyphenylene sulfide filter material surface coats polytetrafluoroethylene (PTFE) - Google Patents
A kind of method that polyphenylene sulfide filter material surface coats polytetrafluoroethylene (PTFE) Download PDFInfo
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- CN106884325A CN106884325A CN201710147912.5A CN201710147912A CN106884325A CN 106884325 A CN106884325 A CN 106884325A CN 201710147912 A CN201710147912 A CN 201710147912A CN 106884325 A CN106884325 A CN 106884325A
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Abstract
The method that a kind of polyphenylene sulfide filter material surface of disclosure coats polytetrafluoroethylene (PTFE), comprises the following steps：(1) PTFE dispersion liquids, acrylic ester adhesive and aqueous epoxy resins are with mass ratio 82:15:3 are made Teflon Composite Coating agent；(2) tetrafluoroethene composite coating agent, silicone oil, organic silicon waterproofing agent, bleeding agent and distilled water are with mass ratio (10 12)：(1‑2)：(3‑6)：(1‑2):200 are made composite finishing liquid；(3) polyphenyl thioether filter material is immersed in above-mentioned composite finishing liquid, the polyphenylene sulfide filter material that surface coats polytetrafluoroethylene (PTFE) is made by drying to be bakeed with high temperature.Compared with prior art, the advantage of the invention is that：Filtrate is difficult to be oxidized, corrosion resistance and good, with water and oil-resistant, the film forming and adhesive force of polytetrafluoroethylene (PTFE) are good, in the filtering material of the polyphenylene sulfide that can be widely used in coal-fired high-temperature flue gas.
Description
Technical field
The present invention relates to polyphenylene sulfide filter Material Field, and in particular to a kind of polyphenylene sulfide filter material surface coating is poly-
The method of tetrafluoroethene.
Background technology
Polyphenylene sulfide (PPS) filtering material is in coal-fired high-temperature flue gas use environment easily by NO and O2Oxidation so that PPS is fine
Dimension unformed area and the degraded of partially crystallizable area, fabric strength decline, reduction of service life.And polytetrafluoroethylene (PTFE) (PTFE) is corrosion resistant
One of corrosion energy optimal material, therefore related arrangement is carried out to PPS filtrates with PTFE, PTFE is played certain antioxygen to PPS filtrates
Change protective effect.PPS filter material surface coated with PTFE, on the one hand can improve the filtering accuracy and efficiency of filtrate, improve filtrate
Deashing property, reduces the running resistance of dust pelletizing system；On the other hand, it is possible to use PTFE unique chemical property is played to fiber
Protective effect.But PTFE is typical nonpolar molecule, intermolecular interaction is weaker, and macromolecular chain segment easily slides or breaks
Split, and surface adhesiveness is weak, therefore PTFE is poor in the caking property and film forming of PPS filter material surfaces.
Additionally, in hot and humid environment, the SO in flue gas3With NO etc. and vapor effect, easily coagulated in fiber surface
Form mixed acid dew, produce stronger chemical attack, make filter bag damage.Meanwhile, when oil droplet, mist of oil is contained in flue gas, these
Material is easily bonded in filter material surface with the material such as flue dust, shortens the service life of filtrate.
Therefore, it is faced with polyphenylene sulfide filter material at present not corrosion-resistant, PTFE is coated in PPS surfaces and can improve
The corrosion resistance of PPS filtering materials, but the molecular structure of PTFE makes film forming and bad adhesion again；And filtering material is easily in table
Face forms sour dew, produces stronger chemical attack, the problem for destroying filter bag.
The content of the invention
Regarding to the issue above, the present invention proposes a kind of method that polyphenylene sulfide filter material surface coats polytetrafluoroethylene (PTFE),
The anti-corrosive properties of polyphenylene sulfide filter material can be strengthened, make PTFE in the easy film forming of polyphenylene sulfide filter material surface, caking property
Preferably；There is water and oil-resistant simultaneously.
The present invention is to solve above-mentioned technical problem by the following technical programs：
A kind of method that polyphenylene sulfide filter material surface coats polytetrafluoroethylene (PTFE), comprises the following steps：
(1) preparation of Teflon Composite Coating agent：It is dispersion liquid in agitator with the PTFE that solid content is 40%
Stirring 30min, then the acrylic ester adhesive that solid content is 30% is separately added into, the aqueous epoxy resins of solid content 35%, its
The mass ratio of middle polytetrafluoroethylene (PTFE), acrylic ester adhesive and aqueous epoxy resins is：82:15:3, stirring 30min obtains final product described
Teflon Composite Coating agent；
(2) preparation of composite finishing liquid：By above-mentioned Teflon Composite Coating agent, silicone oil, organic silicon waterproofing agent, ooze
Saturating agent and distilled water are with mass ratio (10-12)：(1-2)：(3-6)：(1-2):200 are separately added into agitator, stir 30-
40min, obtains final product the composite finishing liquid；
(3) polyphenylene sulfide filter material surface coating：Polyphenylene sulfide filter material is immersed in above-mentioned composite finishing agent, often
Temperature immersion 30-60min, then carries out low temperature drying successively and high temperature is bakeed, that is, the polyphenyl that surface coats polytetrafluoroethylene (PTFE) is obtained
Thioether filtering material.
Further, in step (2), silicone oil is methyl-silicone oil, phenyl silicone oil, one kind of MethylethoxylsiliconFluid Fluid.
Further, it is the water resistance of enhancing filtrate, in step (2), waterproofing agent is methane-siliconic acid salt water-repellent, hydroxyl envelope
Hold one kind of siloxanes concentrated emulsion.
Further, it is middle permeability of the enhancing composite finishing liquid in PPS filtrates, in step (2), bleeding agent gathers for alkyl phenol
One in oxygen vinethene, sec-octyl alcohol APEO or diisooctyl maleate sulfonate (aerosol-OT salt)
Kind.
Further, it is moisture unnecessary in removing filtering material, in step (3), low temperature drying is 100-120 DEG C of drying
10-20min。
Further, to make coating agent form continuous film in filter material surface, in step (3), it is 140-160 that high temperature is bakeed
DEG C bakee 2-5min.
A kind of method that polyphenylene sulfide filter material surface coats polytetrafluoroethylene (PTFE), it is characterised in that comprise the following steps：
(1) preparation of Teflon Composite Coating agent：It is dispersion liquid in agitator with the PTFE that solid content is 40%
Stirring 30min, then the acrylic ester adhesive that solid content is 30% is separately added into, the aqueous epoxy resins of solid content 35%, its
The mass ratio of middle polytetrafluoroethylene (PTFE), acrylic ester adhesive and aqueous epoxy resins is：82:15:3, stirring 30min obtains final product described
Teflon Composite Coating agent；
(2) by the Teflon Composite Coating agent, the silicone oil, the organic silicon waterproofing agent, the bleeding agent
With the distilled water respectively with mass ratio 10：1：3：1:200, it is added in agitator, 30min is stirred, obtain final product described compound whole
Reason liquid；
(3) polyphenylene sulfide filter material is immersed in above-mentioned composite finishing agent, soak at room temperature 30min；Then successively 100
Low temperature drying 10min at DEG C, then 5min is bakeed at 160 DEG C, that is, the polyphenylene sulfide filter that surface coats polytetrafluoroethylene (PTFE) is obtained
Material.
Compared with prior art, the present invention has：
(1) after PTFE coatings PPS filtrates be difficult to be oxidized, corrosion resistance and good, the film forming and adhesive force of PTFE be preferable；
PPS filtering materials surface coated with PTFE can strengthen the anticorrosive property of filtering material, be added in Teflon Composite Coating agent
Adhesive and aqueous epoxy resins, improve the film forming and the adhesive force in filter material surface of PTFE；
(2) filtering material has water and oil-resistant；The composite finishing liquid of preparation, and the immersion of PPS filtrates is wherein improved
The water and oil-resistant of former PPS filtrates；Method is simple, the filtering material of the polyphenylene sulfide that can be widely used in coal-fired high-temperature flue gas
In.
Brief description of the drawings
Fig. 1 is the scanning electron microscope (SEM) photograph (SEM) of the polyphenylene sulfide filter material of embodiment 1.
Fig. 2 is the scanning electron microscope (SEM) photograph (SEM) of the polyphenylene sulfide filter material of the surface of embodiment 1 coating polytetrafluoroethylene (PTFE).
Specific embodiment
The preparation of Teflon Composite Coating agent：Stirred in agitator as dispersion liquid with the PTFE that solid content is 40%
30min, then the acrylic ester adhesive that solid content is 30% is separately added into, the aqueous epoxy resins of solid content 35%, wherein poly-
The mass ratio of tetrafluoroethene, acrylic ester adhesive and aqueous epoxy resins is：82:15:3, stirring 30min obtains final product described poly- four
PVF composite coating agent；
PTFE is nonpolar molecule structure, and intermolecular force is weak, possesses poor surface adhesiveness and melt fluidity,
Complete continuous coating and low with the firmness of PPS can not be formed on filtering material surface, PTFE can not be with single film forming
Thing is used as coating material；Wherein aqueous epoxy resins have preferable cohesive and adhesive force and the good performance of film forming, institute
So that appropriate aqueous epoxy resins can be added in composite coating agent to improve the film forming and caking property of PTFE；But work as ring
The addition of oxygen tree fat can cause PTFE film forming caudacoria hard crisp so PART EPOXY can be replaced with a small amount of binding agent when too high
Resin, finds, through experiment when the mass ratio of tetrafluoroethene, acrylic ester adhesive and aqueous epoxy resins is：82:15:When 3,
The film forming and caking property of PTFE are all preferable.
Embodiment 1
(1) preparation of Teflon Composite Coating agent：It is dispersion liquid in agitator with the PTFE that solid content is 40%
Stirring 30min, then the acrylic ester adhesive that solid content is 30% is separately added into, the aqueous epoxy resins of solid content 35%, its
The mass ratio of middle polytetrafluoroethylene (PTFE), acrylic ester adhesive and aqueous epoxy resins is：82:15:3, stirring 30min obtains final product described
Teflon Composite Coating agent；
(2) by Teflon Composite Coating agent, methyl-silicone oil, waterproofing agent methyl silicate, bleeding agent alkyl phenol polyoxy
Vinethene and distilled water are respectively with mass ratio 10：1：3：1:200, it is added in agitator, 30min is stirred, obtain final product described compound
Dressing liquid；
(3) polyphenylene sulfide filter material is immersed in above-mentioned composite finishing agent, soak at room temperature 30min；Then successively 100
Low temperature drying 10min at DEG C, then 5min is bakeed at 160 DEG C, that is, the polyphenylene sulfide filter that surface coats polytetrafluoroethylene (PTFE) is obtained
Material.
The polyphenylene sulfide filter material of above-mentioned polyphenylene sulfide filter material and surface coating polytetrafluoroethylene (PTFE) is both placed in
Same time in high-temperature flue gas environment, is so observed with scanning electron microscope sem respectively, is as shown in Figure 1 polyphenylene sulfide filter material
Scanning electron microscope (SEM) photograph, Fig. 2 is the scanning electron microscope (SEM) photograph of the polyphenylene sulfide filter material of surface coating polytetrafluoroethylene (PTFE), can from figure
To the water and oil repellant better performances of compared to Figure 1 Fig. 2, and PTFE is uniform in the coating of PPS surfaces.
Embodiment 2
(1) preparation of Teflon Composite Coating agent：It is dispersion liquid in agitator with the PTFE that solid content is 40%
Stirring 30min, then the acrylic ester adhesive that solid content is 30% is separately added into, the aqueous epoxy resins of solid content 35%, its
The mass ratio of middle polytetrafluoroethylene (PTFE), acrylic ester adhesive and aqueous epoxy resins is：82:15:3, stirring 30min obtains final product described
Teflon Composite Coating agent；
(2) by Teflon Composite Coating agent, phenyl silicone oil, hydroxy-terminated siloxanes concentrated emulsion, sec-octyl alcohol polyoxy
Vinethene and distilled water are respectively with mass ratio 11：2：5：2:200, it is added in agitator, 35min is stirred, obtain final product described compound
Dressing liquid；
(3) polyphenylene sulfide filter material is immersed in above-mentioned composite finishing agent, soak at room temperature 50min；Then successively 110
Low temperature drying 15min at DEG C, then 3min is bakeed at 150 DEG C, that is, the polyphenylene sulfide filter that surface coats polytetrafluoroethylene (PTFE) is obtained
Material.
Embodiment 3
(1) preparation of Teflon Composite Coating agent：It is dispersion liquid in agitator with the PTFE that solid content is 40%
Stirring 30min, then the acrylic ester adhesive that solid content is 30% is separately added into, the aqueous epoxy resins of solid content 35%, its
The mass ratio of middle polytetrafluoroethylene (PTFE), acrylic ester adhesive and aqueous epoxy resins is：82:15:3, stirring 30min obtains final product described
Teflon Composite Coating agent；
(2) by Teflon Composite Coating agent, MethylethoxylsiliconFluid Fluid, methane-siliconic acid salt water-repellent, maleic acid
Di-isooctyl sulfonate (aerosol-OT salt) and distilled water are respectively with mass ratio 12：2：6：2:200, it is added to and stirs
Mix in device, stir 40min, obtain final product the composite finishing liquid；
(3) polyphenylene sulfide filter material is immersed in above-mentioned composite finishing agent, soak at room temperature 60min；Then successively 120
Low temperature drying 20min at DEG C, then 5min is bakeed at 160 DEG C, that is, the polyphenylene sulfide filter that surface coats polytetrafluoroethylene (PTFE) is obtained
Material.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (7)
1. a kind of method that polyphenylene sulfide filter material surface coats polytetrafluoroethylene (PTFE), it is characterised in that comprise the following steps：
(1) preparation of Teflon Composite Coating agent：Stirred in agitator as dispersion liquid with the PTFE that solid content is 40%
30min, then the acrylic ester adhesive that solid content is 30% is separately added into, the aqueous epoxy resins of solid content 35%, wherein poly-
The mass ratio of tetrafluoroethene, acrylic ester adhesive and aqueous epoxy resins is：82:15:3, stirring 30min obtains final product described poly- four
PVF composite coating agent；
(2) preparation of composite finishing liquid：By above-mentioned Teflon Composite Coating agent, silicone oil, organic silicon waterproofing agent, bleeding agent
With distilled water with mass ratio (10-12)：(1-2)：(3-6)：(1-2):200 are separately added into agitator, stir 30-40min, i.e.,
Obtain the composite finishing liquid；
(3) polyphenylene sulfide filter material surface coating：Polyphenylene sulfide filter material is immersed in above-mentioned composite finishing agent, normal temperature leaching
Bubble 30-60min, then carries out low temperature drying successively and high temperature is bakeed, that is, the polyphenylene sulfide that surface coats polytetrafluoroethylene (PTFE) is obtained
Filtering material.
2. a kind of method that polyphenylene sulfide filter material surface coats polytetrafluoroethylene (PTFE) according to claim 1, its feature exists
In in step (2), the silicone oil is the one kind in methyl-silicone oil, phenyl silicone oil, MethylethoxylsiliconFluid Fluid.
3. a kind of method that polyphenylene sulfide filter material surface coats polytetrafluoroethylene (PTFE), it is characterised in that described in step (2)
Waterproofing agent is one kind of methane-siliconic acid salt water-repellent or hydroxy-terminated siloxanes concentrated emulsion waterproofing agent.
4. a kind of method that polyphenylene sulfide filter material surface coats polytetrafluoroethylene (PTFE), it is characterised in that described in step (2)
Bleeding agent is that APES, sec-octyl alcohol APEO, AEO or maleic acid two are different pungent
One kind in sulfonated ester (aerosol-OT salt).
5. a kind of method that polyphenylene sulfide filter material surface coats polytetrafluoroethylene (PTFE), it is characterised in that described in step (3)
Low temperature drying dries 10-20min for 100-120 DEG C.
6. a kind of method that polyphenylene sulfide filter material surface coats polytetrafluoroethylene (PTFE), it is characterised in that described in step (3)
It is 140-160 DEG C of baking 2-5min that high temperature is bakeed.
7. a kind of method that polyphenylene sulfide filter material surface coats polytetrafluoroethylene (PTFE), it is characterised in that comprise the following steps：
(1) preparation of Teflon Composite Coating agent：Stirred in agitator as dispersion liquid with the PTFE that solid content is 40%
30min, then the acrylic ester adhesive that solid content is 30% is separately added into, the aqueous epoxy resins of solid content 35%, wherein poly-
The mass ratio of tetrafluoroethene, acrylic ester adhesive and aqueous epoxy resins is：82:15:3, stirring 30min obtains final product described poly- four
PVF composite coating agent；
(2) by the Teflon Composite Coating agent, the silicone oil, the organic silicon waterproofing agent, the bleeding agent and institute
Distilled water is stated respectively with mass ratio 10：1：3：1:200, it is added in agitator, 30min is stirred, obtain final product the composite finishing liquid；
(3) polyphenylene sulfide filter material is immersed in above-mentioned composite finishing agent, soak at room temperature 30min；Then successively at 100 DEG C
Low temperature drying 10min, then 5min is bakeed at 160 DEG C, that is, the polyphenylene sulfide filter material that surface coats polytetrafluoroethylene (PTFE) is obtained.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107287896A (en) * | 2017-07-31 | 2017-10-24 | 安徽元琛环保科技股份有限公司 | A kind of dedusting filtrate dressing liquid, its preparation method and application |
| CN107854916A (en) * | 2017-11-30 | 2018-03-30 | 安徽雷萨重工机械有限公司 | A kind of preparation method of high temperature resistant antifouling deduster glass filter bag |
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| CN113663413A (en) * | 2021-08-03 | 2021-11-19 | 江苏康隆迪超净科技有限公司 | Super-hydrophobic PTFE filter cloth and preparation method thereof |
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| CN113663413A (en) * | 2021-08-03 | 2021-11-19 | 江苏康隆迪超净科技有限公司 | Super-hydrophobic PTFE filter cloth and preparation method thereof |
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