CN104389178B - The modified polyphenyl thioether of a kind of basalt fibre filter material/polytetrafluoroethylene (PTFE) layered coated method - Google Patents
The modified polyphenyl thioether of a kind of basalt fibre filter material/polytetrafluoroethylene (PTFE) layered coated method Download PDFInfo
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- CN104389178B CN104389178B CN201410481965.7A CN201410481965A CN104389178B CN 104389178 B CN104389178 B CN 104389178B CN 201410481965 A CN201410481965 A CN 201410481965A CN 104389178 B CN104389178 B CN 104389178B
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Abstract
The modified polyphenyl thioether of a kind of basalt fibre filter material/polytetrafluoroethylene (PTFE) layered coated method, including: basalt fibre is made the step of filtrate base fabric；Linear polyphenylene sulfide and over-expense chain polyphenylene sulfide are mixed the step of modified polyphenyl thioether emulsion；Modified polyphenyl thioether emulsion, ptfe emulsion and fluorine containing silane coupling agent are mixed the step of subbing；By ptfe emulsion, water and F46Emulsion is mixed and made into the step of investment precoat；Described filtrate base fabric is immersed in described subbing, hot setting, with stove cooling, make the step of bottom；With spray gun, investment precoat is sprayed on bottom surface, after high temperature plasticizing, obtains the step of finished product.By the preparation method of the present invention, the composite filtering material of manufacture has good heat endurance, corrosion resistance, stronger mechanical strength, improves the dispersiveness of finished fiber and compactness extent and manufacturing process is simple, and cost is relatively low, is suitable for large-scale industrial production.
Description
Technical field
The present invention relates to the painting method of basalt fibre filter material, particularly relate to a kind of basalt fine
Modified polyphenyl thioether/polytetrafluoroethylene (PTFE) layered coated the method for dimension filtrate.
Background technology
At present, fire resistant filter material has been widely used in the industrial circles such as generating, cement, filtrate
Being the chief component of gas-solid separating device, its performance directly determines the quality of filter effect.In order to
Improving filtering accuracy, people, in addition to the most constantly improving the preparation technology of filtrate own, also use
The Final finishing technology such as dipping, coating and overlay film, it is intended to improve top layer and the internal structure of filter material, thus
Obtain the high efficiency filter material of even structure, dimensionally stable.
Finding in actual production, the oxidative resistance of single polyphenylene sulfide Nomex is bad, it is impossible to suitable
Answer the clean-up effect under high oxygen condition.Although single polytetrafluoroethylene fibre Nomex has water repellent
Property, oxidation resistent susceptibility, but it is expensive, requires the highest to equipment for after-treatment, increases
Production cost.It is coated in filtrate base fabric can improve it addition, prepare coating with polytetrafluorethylepowder powder
Filtrate antistick characteristic, but levelling cannot be melted completely, therefore due to polytetrafluoroethylene (PTFE) greatly because of melting viscosity
The bad mechanical property of this filtrate, easy needle outlet, the binding ability of coating is low.
Basalt fibre has high temperature resistant, the anti-oxidant and feature of radiation proof, can be widely used for filtrate raw
Produce.The dimensional stability being compounded with under material at high temperature can be improved for filtrate base fabric with basalt fibre,
Also can improve its acid-fast alkali-proof simultaneously.Owing to basalt fibre surface tension is big, obvolvent between fiber
Power is poor, easily produces electrostatic, many reasons such as elastic modelling quantity is big, in this base fabric continue use dipping,
The Final finishing technology such as coating, overlay film, it is possible to improve the Surface and internal structure of filter material, thus tied
Structure is uniform, the high efficiency filter material of dimensionally stable.
In sum, at present in the urgent need to the preparation method of a kind of filtrate, it is possible to improve composite filtering material
High-temperature stability, improve its acid-fast alkali-proof and promote that composite be combined with each other, thus improving into
The strainability of product.
Summary of the invention
Hyperbranched polyphenylene sulfide has the chemical composition similar with linear polyphenylthioether, all contains phenyl ring
And sulphur atom, but chemical constitution is different.By the polyphenylene sulfide of hyperbranched polyphenylene sulfide and line style by certain
Proportioning is blended, it is possible to while reducing melt viscosity, improving end properties, keeps both preferably
Compatibility.Modified polyphenyl thioether/the polytetrafluoroethylene (PTFE) that process provides a kind of basalt fibre filter material divides
Layer painting method.Using basalt fibre as filtrate base fabric, respectively by modified polyphenyl thioether and polytetrafluoro
Ethene is prepared as coating, the method using layered coated, change strong with base fabric binding ability of primer coating
Property polyphenylene sulfide, top layer coating has a polytetrafluoroethylene (PTFE) of antistick characteristic, thus improve filtrate mechanical strength,
High-temperature stability, acid-fast alkali-proof, provide the degree of roughness of filtering layer surface composite coating simultaneously, promotes
Coating and between be combined with each other, and improve dispersiveness and the compactness extent of fiber.
For achieving the above object, technical scheme provided by the present invention is:
The modified polyphenyl thioether of a kind of basalt fibre filter material/polytetrafluoroethylene (PTFE) layered coated method, bag
Include:
1) basalt fibre is made filtrate base fabric；
2) linear polyphenylene sulfide and over-expense chain polyphenylene sulfide are mixed and made into modified polyphenyl thioether emulsion；
3) by modified polyphenyl thioether emulsion, ptfe emulsion and fluorine containing silane coupling agent mixing system
Become subbing；
4) by ptfe emulsion, water and F46Emulsion is mixed and made into investment precoat；
5) described filtrate base fabric is immersed in described subbing, hot setting, with stove cooling,
Make bottom；
6) with spray gun, investment precoat is sprayed on bottom surface, after high temperature plasticizing, obtains finished product.
Further, step 2) described in modified polyphenyl thioether emulsion be 5-10% by mass percent
Linear polyphenylene sulfide powder, 3-5% hyperbranched polyphenylene sulfide powder, surplus be water composition；Step 3)
Described in subbing by modified polyphenyl thioether emulsion that mass percent is 35-55%, 40-60%
The fluorine containing silane coupling agent composition of ptfe emulsion and 5%-10%；Step 4) described in face
Coating is by the F that mass percent is the ptfe emulsion of 40-50%, 38-48%46Emulsion, remaining
Measure and form for water.
Further, step 2) described in modified polyphenyl thioether emulsion be 8% by mass percent
Linear polyphenylene sulfide powder, 4% hyperbranched polyphenylene sulfide powder, surplus is water composition；Step 3) in
Described subbing is by the modified polyphenyl thioether emulsion that mass percent is 40%, the polytetrafluoroethyl-ne of 55%
Alkene emulsion and the fluorine containing silane coupling agent composition of 5%；Step 4) described in investment precoat by quality
Percentage is ptfe emulsion, the F of 40% of 45%46Emulsion, surplus is water composition.
Further, described hyperbranched polyphenylene sulfide is two chloro thiophenols by 50mmol and 100mmol
Anhydrous potassium carbonate join in the 1-METHYLPYRROLIDONE of 0.8M, be heated to 150 DEG C, insulation
8.5 hours, after product hydrochloric acid washing and filtering, adding oxolane and dissolve, hexane extracts, and filters and dries
Drying one-tenth, the degree of polymerization is 8-12.
Further, the thickness of wherein said subbing is 8-10 μm, and surface layer coating layer thickness is
4-6 μm, surface layer spraying 1-2 layer.
Using technique scheme, beneficial effects of the present invention has:
Base fabric the most in the present invention uses hyperbranched polyphenylene sulfide and linear polyphenylene sulfide that conduct is blended
Primer coating, its crystallization temperature and crystallization rate, higher than the most linear polyphenylene sulfide coating, therefore can
Enough improve heat endurance and the flow leveling of filtrate, it is easier to processing.
2. use basalt to make base fabric, owing to basalt fibre has high temperature resistant, anti-oxidant and anti-spoke
The feature penetrated, it is higher with the binding ability of face coat, after surface coating fluoropolymer, around
Fiber is adhered degree and improves so that fibre net structure becomes finer and close, increases smooth fiber surface
Degree of roughness, facilitates dust in flue gas to enter between filtrate, increases filtrate running resistance, improve filter
The strainability of material and mechanical property.
3. the method using layered coated, the modified polyphenyl thioether that bottom coating binding ability is strong, surface layer
Coating has the polytetrafluoroethylene (PTFE) of antistick characteristic, it is provided that the mechanical strength of coating, prevent polyphenylene sulfide simultaneously
The generation of decomposing phenomenon, can obtain coarse coating surface simultaneously.
4. by the filtrate of the preparation method manufacture of the present invention, there is good heat endurance, corrosion-resistant
Property, dispersiveness and the compactness extent of finished fiber can be improved simultaneously, and manufacturing process is simple, become
This is relatively low, is suitable for large-scale industrial production.
Detailed description of the invention
Embodiment 1
Prepare basalt filtrate base fabric: by basalt fibre shredding, carding, cross lapping, system
Become filtrate base fabric.
Prepare hyperbranched polyphenylene sulfide: add in 250mL three-necked bottle 10g 3,4-bis-chloro thiophenol and
13.4g Anhydrous potassium carbonate and the 1-METHYLPYRROLIDONE of 80mL, be heated to 150 DEG C, is incubated 8.5
h.Product, with after hydrochloric acid washing and filtering, adds oxolane and dissolves, extract with hexane, filtering drying,
Obtaining light brown hyperbranched PPS powder, its degree of polymerization is 8-12.
Prepare modified polyphenyl thioether fibre emulsion: be the linear polyphenylene sulfide powder of 5% by mass percentage
End, 5% hyperbranched polyphenylene sulfide powder, surplus is the ratio mixing of water, then passes through Ultrasonic Cleaning
Machine mixes, and is configured to emulsion.
Prepare subbing: be by mass percentage 35% modified polyphenyl thioether emulsion, 60% poly-
Tetrafluoroethene emulsion and the ratio mixing of fluorine containing silane coupling agent of 5%, then pass through supersonic wave cleaning machine
Mix, be configured to emulsion.
Prepare investment precoat: be ptfe emulsion, the F of 48% of 40% by mass percentage46
Emulsion, surplus is the ratio mixing of water, then is mixed by supersonic wave cleaning machine, is configured to emulsion.
Infusion process coating subbing: the filtrate base fabric after cleaning is immersed in subbing emulsion,
Again by padding machine roll compacting, preliminary drying, temperature is 90 DEG C, bakes, and temperature is 160 DEG C, cools down with stove,
Subbing thickness is 8-10 μm.
Spraying process coated side coating: with spray gun by investment precoat emulsion even application in bottom surface,
Every layer thickness is 4-6 μm, chokes and accumulation is as the criterion occurring without gas, sprays 1-2 layer, put into 60 DEG C
Baking oven preheats 30min, then plasticizing forming in 360 DEG C of high temperature.
Embodiment 2
Prepare basalt filtrate base fabric: by basalt fibre shredding, carding, cross lapping, system
Become filtrate base fabric.
Prepare hyperbranched polyphenylene sulfide: add in 250mL three-necked bottle 10g 3,4-bis-chloro thiophenol and
13.4g Anhydrous potassium carbonate and the 1-METHYLPYRROLIDONE of 80mL, be heated to 150 DEG C, is incubated 8.5
h.Product, with after hydrochloric acid washing and filtering, adds oxolane and dissolves, extract with hexane, filtering drying,
Obtaining light brown hyperbranched PPS powder, its degree of polymerization is 8-12.
Prepare modified polyphenyl thioether fibre emulsion: be the linear polyphenylene sulfide powder of 10% by mass percentage
End, 3% hyperbranched polyphenylene sulfide powder, surplus is the ratio mixing of water, then passes through Ultrasonic Cleaning
Machine mixes, and is configured to emulsion.
Prepare subbing: be by mass percentage 45% modified polyphenyl thioether emulsion, 45% poly-
Tetrafluoroethene emulsion and the ratio mixing of fluorine containing silane coupling agent of 10%, then pass through supersonic wave cleaning machine
Mix, be configured to emulsion.
Prepare investment precoat: be ptfe emulsion, the F of 38% of 50% by mass percentage46
Emulsion, surplus is the ratio mixing of water, then is mixed by supersonic wave cleaning machine, is configured to emulsion.
Infusion process coating subbing: the filtrate base fabric after cleaning is immersed in subbing emulsion,
Again by padding machine roll compacting, preliminary drying, temperature is 90 DEG C, bakes, and temperature is 160 DEG C, cools down with stove,
Subbing thickness is 8-10 μm.
Spraying process coated side coating: with spray gun by investment precoat emulsion even application in bottom surface,
Every layer thickness is 4-6 μm, chokes and accumulation is as the criterion occurring without gas, sprays 1-2 layer, put into 65 DEG C
Baking oven preheats 25min, then plasticizing forming in 360 DEG C of high temperature.
Embodiment 3
Prepare basalt filtrate base fabric: by basalt fibre shredding, carding, cross lapping, system
Become filtrate base fabric.
Prepare hyperbranched polyphenylene sulfide: add in 250mL three-necked bottle 10g 3,4-bis-chloro thiophenol and
13.4g Anhydrous potassium carbonate and the 1-METHYLPYRROLIDONE of 80mL, be heated to 150 DEG C, is incubated 8.5
h.Product, with after hydrochloric acid washing and filtering, adds oxolane and dissolves, extract with hexane, filtering drying,
Obtaining light brown hyperbranched PPS powder, its degree of polymerization is 8-12.
Prepare modified polyphenyl thioether fibre emulsion: be the linear polyphenylene sulfide powder of 8% by mass percentage
End, 4% hyperbranched polyphenylene sulfide powder, surplus is the ratio mixing of water, then passes through Ultrasonic Cleaning
Machine mixes, and is configured to emulsion.
Prepare subbing: be by mass percentage 40% modified polyphenyl thioether emulsion, 55% poly-
Tetrafluoroethene emulsion and the ratio mixing of fluorine containing silane coupling agent of 5%, then pass through supersonic wave cleaning machine
Mix, be configured to emulsion.
Prepare investment precoat: be ptfe emulsion, the F of 40% of 45% by mass percentage46
Emulsion, surplus is the ratio mixing of water, then is mixed by supersonic wave cleaning machine, is configured to emulsion.
Infusion process coating subbing: the filtrate base fabric after cleaning is immersed in subbing emulsion,
Again by padding machine roll compacting, preliminary drying, temperature is 90 DEG C, bakes, and temperature is 160 DEG C, cools down with stove,
Subbing thickness is 8-10 μm.
Spraying process coated side coating: with spray gun by investment precoat emulsion even application in bottom surface,
Every layer thickness is 4-6 μm, chokes and accumulation is as the criterion occurring without gas, sprays 1-2 layer, put into 60 DEG C
Baking oven preheats 30min, then plasticizing forming in 360 DEG C of high temperature.
In embodiment 1,2,3, end properties parameter see table:
Embodiment described above only have expressed embodiments of the present invention, and it describes more concrete and detailed
Carefully, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that, it is right
For those of ordinary skill in the art, without departing from the inventive concept of the premise, it is also possible to do
Going out some deformation and improvement, these broadly fall into protection scope of the present invention.
Claims (4)
1. the modified polyphenyl thioether of basalt fibre filter material/polytetrafluoroethylene (PTFE) layered coated method,
It is characterized in that, including:
1) basalt fibre is made filtrate base fabric；
2) linear polyphenylene sulfide and over-expense chain polyphenylene sulfide are mixed and made into modified polyphenyl thioether emulsion；
3) by modified polyphenyl thioether emulsion, ptfe emulsion and fluorine containing silane coupling agent mixing system
Become subbing；
4) by ptfe emulsion, water and F46Emulsion is mixed and made into investment precoat；
5) described filtrate base fabric is immersed in described subbing, hot setting, with stove cooling,
Make bottom；
6) with spray gun, investment precoat is sprayed on bottom surface, after high temperature plasticizing, obtains finished product；
Wherein, step 2) described in modified polyphenyl thioether emulsion be the line of 5-10% by mass percent
Property pps powder, 3-5% hyperbranched polyphenylene sulfide powder, surplus be water composition；Step 3) in
Described subbing by the modified polyphenyl thioether emulsion that mass percent is 35-55%, 40-60% poly-
The fluorine containing silane coupling agent composition of tetrafluoroethene emulsion and 5%-10%；Step 4) described in surface layer
Coating is by the F that mass percent is the ptfe emulsion of 40-50%, 38-48%46Emulsion, surplus
Form for water.
Modified polyphenyl thioether/the polytetrafluoroethyl-ne of basalt fibre filter material the most according to claim 1
Alkene layered coated method, it is characterised in that step 2) described in modified polyphenyl thioether emulsion by quality
Percentage is linear polyphenylene sulfide powder, the 4% hyperbranched polyphenylene sulfide powder of 8%, and surplus is water group
Become；Step 3) described in subbing by the modified polyphenyl thioether emulsion that percentage is 40%, 55%
Ptfe emulsion and 5% fluorine containing silane coupling agent composition；Step 4) described in surface layer
Coating is by the ptfe emulsion that mass percent is 45%, the F of 40%46Emulsion, surplus is water
Composition.
The modified polyphenyl thioether of basalt fibre filter material the most according to claim 1 and 2/poly-four
PVF layered coated method, it is characterised in that described hyperbranched polyphenylene sulfide is by 50mmol
Two chloro thiophenols and the Anhydrous potassium carbonate of 100mmol join the 1-METHYLPYRROLIDONE of 0.8M
In, it is heated to 150 DEG C, is incubated 8.5 hours, after product hydrochloric acid washing and filtering, add oxolane
Dissolving, hexane extracts, and filtering drying is made, and the degree of polymerization is 8-12.
The modified polyphenyl thioether of basalt fibre filter material the most according to claim 1 and 2/poly-four
PVF layered coated method, it is characterised in that the thickness of wherein said subbing is 8-10 μm,
The every layer thickness of surface layer coating is 4-6 μm, surface layer spraying 1-2 layer.
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| WO2016041099A1 (en) * | 2014-09-19 | 2016-03-24 | 太仓苏纶纺织化纤有限公司 | Method for coating modified polyphenylene sulphide/polytetrachloroethylene on basalt fibre filter material in layers |
| CN104963030B (en) * | 2015-06-01 | 2017-10-27 | 北京中铁润海科技有限公司 | A kind of corrosion-resistant high-toughness high-strength composite fibre and its production technology |
| CN106390623B (en) * | 2015-08-26 | 2018-08-24 | 浙江宇邦滤材科技有限公司 | A kind of preparation method of aramid fiber superfine fibre needle thorn filter bag |
| CN105544121B (en) * | 2016-01-30 | 2019-01-25 | 上海仪耐新材料科技有限公司 | A kind of efficiently hydrophobic oil suction multi-stage treatment units |
| CN116396099A (en) * | 2023-04-20 | 2023-07-07 | 南通市建设混凝土有限公司 | Foaming concrete and preparation process thereof |
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