CN104389178A - Modified polyphenylene sulfide/polytetrafluoroethylene layered coating method for basalt fiber filter material - Google Patents
Modified polyphenylene sulfide/polytetrafluoroethylene layered coating method for basalt fiber filter material Download PDFInfo
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- CN104389178A CN104389178A CN201410481965.7A CN201410481965A CN104389178A CN 104389178 A CN104389178 A CN 104389178A CN 201410481965 A CN201410481965 A CN 201410481965A CN 104389178 A CN104389178 A CN 104389178A
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- emulsion
- polyphenylene sulfide
- filter material
- polyphenyl thioether
- modified polyphenyl
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Abstract
The invention relates to a modified polyphenylene sulfide/polytetrafluoroethylene layered coating method for a basalt fiber filter material. The method includes the steps of: preparing basalt fiber into a filter material base cloth; mixing linear polyphenylene sulfide with hyperbranched polyphenylene sulfide to prepare a modified polyphenylene sulfide emulsion; mixing the modified polyphenylene emulsion, the polytetrafluoroethylene emulsion and a fluorine-containing silane coupling agent to prepare priming paint; mixing the polytetrafluoroethylene emulsion, the fluorine-containing silane coupling agent and an F46 emulsion to prepare top paint; dipping the filter material base cloth in the priming paint, conducting high temperature curing, furnace cooling, and preparing a base layer; and spraying the top paint on the base layer surface by a spray gun, and carrying out high temperature plasticization, thus obtaining a finished product. The composite filter material prepared by the method provided by the invention has good thermal stability, corrosion resistance and high mechanical strength, can improve the dispersibility and compact degree of the finished fiber product. Also, the manufacturing process is simple and is low in cost, thus being 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 modified polyphenyl thioether/politef layered coated method of basalt fibre filter material.
Background technology
At present, fire resistant filter material has been widely used in industrial circles such as generating, cement, and filtrate is the chief component of gas-solid separating device, and its performance directly determines the quality of filter effect.In order to improve filtering accuracy, people are except constantly improving the preparation technology of filtrate own aborning, also use the hindlimb unload such as dipping, coating and overlay film, be intended to top layer and the internal structure of improving filter material, thus obtain the high efficiency filter material of even structure, dimensionally stable.
Find in actual production, the oxidative resistance of single polyphenylene sulfide Nomex is bad, cannot adapt to the clean-up effect under high oxygen condition.Although single polytetrafluoroethylene fibre Nomex has WATER REPELLENCY, oxidation resistent susceptibility, it is expensive, requires also very high to post processing equipment, increases production cost.In addition, prepare coating with polytetrafluorethylepowder powder to be coated on filtrate base cloth and can to improve filtrate antistick characteristic, but due to polytetrafluoroethylene (PTFE) because melting viscosity greatly cannot melting levelling, the therefore bad mechanical property of this filtrate completely, easy needle outlet, the binding ability of coating is low.
Basalt fibre has high temperature resistant, anti-oxidant and radiation-resistant feature, can be widely used in filtrate and produce.Be that filtrate base cloth can improve the DIMENSIONAL STABILITY be compounded with under material at high temperature with basalt fibre, also can improve its acid-fast alkali-proof simultaneously.Because basalt fibre surface tension is large, between fiber, cohesive force is poor, easy generation electrostatic, many reasons such as elastic modelling quantity is large, this base cloth continues use the hindlimb unload such as dipping, coating, overlay film, the Surface and internal structure of filter material can be improved, thus obtain the high efficiency filter material of even structure, dimensionally stable.
In sum, at present in the urgent need to a kind of preparation method of filtrate, the high-temperature stability of composite filtering material can be improved, improve its acid-fast alkali-proof and promote that composite be combined with each other, thus improve the strainability of finished 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 blended according to a certain ratio for the polyphenylene sulfide of hyperbranched polyphenylene sulfide and line style, can while reducing melt viscosity, improving end properties, both maintenances are compatibility preferably.Process provides a kind of modified polyphenyl thioether/politef layered coated method of basalt fibre filter material.Using basalt fibre as filtrate base cloth, respectively modified polyphenyl thioether and polytetrafluoroethylene (PTFE) are prepared into coating, adopt the method for layered coated, primer coating and the strong modified polyphenyl thioether of base cloth binding ability, top layer coating has the polytetrafluoroethylene (PTFE) of antistick characteristic, thus improves filtrate mechanical strength, high-temperature stability, acid-fast alkali-proof, provides the degree of roughness of filtering layer surface composite coating simultaneously, promote 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:
Modified polyphenyl thioether/politef layered coated method of basalt fibre filter material, comprising:
1) basalt fibre is made filtrate base cloth;
2) linear polyphenylene sulfide and over-expense chain polyphenylene sulfide are mixed and made into modified polyphenyl thioether emulsion;
3) modified polyphenyl thioether emulsion, ptfe emulsion and fluorine containing silane coupling agent are mixed and made into subbing;
4) by ptfe emulsion, fluorine containing silane coupling agent and F
46emulsion is mixed and made into investment precoat;
5) described filtrate base cloth 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 linear polyphenylene sulfide powder, the 3-5% hyperbranched polyphenylene sulfide powder of 5-10% by mass percent, surplus is water composition; Step 3) described in subbing by percentage be the modified polyphenyl thioether emulsion of 35-55%, the fluorine containing silane coupling agent of the ptfe emulsion of 40-60% and 5%-10% forms; Step 4) described in investment precoat be the ptfe emulsion of 40-50%, the F of 38-48% by percentage
46emulsion, surplus is water composition.
Further, step 2) described in modified polyphenyl thioether emulsion by mass percent be 8% linear polyphenylene sulfide powder, 4% hyperbranched polyphenylene sulfide powder, surplus is water composition; Step 3) described in subbing by percentage be the modified polyphenyl thioether emulsion of 40%, the ptfe emulsion of 55% and 5% fluorine containing silane coupling agent form; Step 4) described in investment precoat be the ptfe emulsion of 45%, the F of 40% by percentage
46emulsion, surplus is water composition.
Further, described hyperbranched polyphenylene sulfide joins in the 1-METHYLPYRROLIDONE of 0.8M by two chloro thiophenols of 50mmol and the Anhydrous potassium carbonate of 100mmol, be heated to 150 DEG C, be incubated 8.5 hours, after product hydrochloric acid washing and filtering, add oxolane and dissolve, hexane extraction, filtering drying is made, and 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.
Adopt technique scheme, beneficial effect of the present invention has:
1. base cloth in the present invention use hyperbranched polyphenylene sulfide and linear polyphenylene sulfide blended as primer coating, its crystallization temperature and crystallization rate are higher than polyphenylene sulfide coating linear merely, therefore, it is possible to improve heat endurance and the flow leveling of filtrate, be easier to processing.
2. adopt basalt to make Ji Bu, because basalt fibre has high temperature resistant, anti-oxidant and radiation-resistant feature, the binding ability of itself and face coat is stronger, after surface coating fluoropolymer, surrounding annulus is adhered degree and improves, and makes fibre net structure become finer and close, increase the degree of roughness of smooth fiber surface, facilitate dust in flue gas to enter between filtrate, increase filtrate running resistance, improve strainability and the mechanical property of filtrate.
3. adopt the method for layered coated, the modified polyphenyl thioether that bottom coating binding ability is strong, surface layer coating has the polytetrafluoroethylene (PTFE) of antistick characteristic, provides the mechanical strength of coating, prevents the generation of polyphenylene sulfide decomposing phenomenon simultaneously, can obtain coarse coating surface simultaneously.
4. the filtrate manufactured by preparation method of the present invention has good heat endurance, corrosion resistance, can improve dispersiveness and the compactness extent of finished fiber simultaneously, and manufacturing technique is simple, and cost is lower, is applicable to large-scale industrial production.
Detailed description of the invention
Embodiment 1
Prepare basalt filtrate base cloth: by basalt fibre shredding, carding, cross lapping, make filtrate base cloth.
Prepare hyperbranched polyphenylene sulfide: in 250mL three-necked bottle, add 10g3, the 1-METHYLPYRROLIDONE of 4-bis-chloro thiophenol and 13.4g Anhydrous potassium carbonate and 80mL, be heated to 150 DEG C, insulation 8.5h.Product is with after hydrochloric acid washing and filtering, and add oxolane and dissolve, with hexane extraction, filtering drying, obtain 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%, 5% hyperbranched polyphenylene sulfide powder by mass percentage, surplus is the ratio mixing of water, then is mixed by supersonic wave cleaning machine, is mixed with emulsion.
Prepare subbing: be by mass percentage the modified polyphenyl thioether emulsion of 35%, the ptfe emulsion of 60% and 5% the ratio mixing of fluorine containing silane coupling agent, then to be mixed by supersonic wave cleaning machine, be mixed with emulsion.
Prepare investment precoat: be the ptfe emulsion of 40%, the F of 48% by mass percentage
46emulsion, surplus is the ratio mixing of water, then is mixed by supersonic wave cleaning machine, is mixed with emulsion.
Infusion process coating subbing: the filtrate base cloth after cleaning is immersed in subbing emulsion, then by padding machine roll compacting, preliminary drying, temperature is 90 DEG C, bakes, and temperature is 160 DEG C, and with stove cooling, 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, is as the criterion not occur that gas is choked and gathered, spraying 1-2 layer, put into the baking oven preheating 30min of 60 DEG C, then in 360 DEG C of high temperature plasticizing forming.
Embodiment 2
Prepare basalt filtrate base cloth: by basalt fibre shredding, carding, cross lapping, make filtrate base cloth.
Prepare hyperbranched polyphenylene sulfide: the 1-METHYLPYRROLIDONE adding 10g 3,4-bis-chloro thiophenol and 13.4g Anhydrous potassium carbonate and 80mL in 250mL three-necked bottle, is heated to 150 DEG C, insulation 8.5h.Product is with after hydrochloric acid washing and filtering, and add oxolane and dissolve, with hexane extraction, filtering drying, obtain 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%, 3% hyperbranched polyphenylene sulfide powder by mass percentage, surplus is the ratio mixing of water, then is mixed by supersonic wave cleaning machine, is mixed with emulsion.
Prepare subbing: be by mass percentage the modified polyphenyl thioether emulsion of 45%, the ptfe emulsion of 45% and 10% the ratio mixing of fluorine containing silane coupling agent, then to be mixed by supersonic wave cleaning machine, be mixed with emulsion.
Prepare investment precoat: be the ptfe emulsion of 50%, the F of 38% by mass percentage
46emulsion, surplus is the ratio mixing of water, then is mixed by supersonic wave cleaning machine, is mixed with emulsion.
Infusion process coating subbing: the filtrate base cloth after cleaning is immersed in subbing emulsion, then by padding machine roll compacting, preliminary drying, temperature is 90 DEG C, bakes, and temperature is 160 DEG C, and with stove cooling, 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, is as the criterion not occur that gas is choked and gathered, spraying 1-2 layer, put into the baking oven preheating 25min of 65 DEG C, then in 360 DEG C of high temperature plasticizing forming.
Embodiment 3
Prepare basalt filtrate base cloth: by basalt fibre shredding, carding, cross lapping, make filtrate base cloth.
Prepare hyperbranched polyphenylene sulfide: the 1-METHYLPYRROLIDONE adding 10g 3,4-bis-chloro thiophenol and 13.4g Anhydrous potassium carbonate and 80mL in 250mL three-necked bottle, is heated to 150 DEG C, insulation 8.5h.Product is with after hydrochloric acid washing and filtering, and add oxolane and dissolve, with hexane extraction, filtering drying, obtain 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%, 4% hyperbranched polyphenylene sulfide powder by mass percentage, surplus is the ratio mixing of water, then is mixed by supersonic wave cleaning machine, is mixed with emulsion.
Prepare subbing: be by mass percentage the modified polyphenyl thioether emulsion of 40%, the ptfe emulsion of 55% and 5% the ratio mixing of fluorine containing silane coupling agent, then to be mixed by supersonic wave cleaning machine, be mixed with emulsion.
Prepare investment precoat: be the ptfe emulsion of 45%, the F of 40% by mass percentage
46emulsion, surplus is the ratio mixing of water, then is mixed by supersonic wave cleaning machine, is mixed with emulsion.
Infusion process coating subbing: the filtrate base cloth after cleaning is immersed in subbing emulsion, then by padding machine roll compacting, preliminary drying, temperature is 90 DEG C, bakes, and temperature is 160 DEG C, and with stove cooling, 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, is as the criterion not occur that gas is choked and gathered, spraying 1-2 layer, put into the baking oven preheating 30min of 60 DEG C, then in 360 DEG C of high temperature plasticizing forming.
In embodiment 1,2,3, end properties parameter sees the following form:
The above embodiment only have expressed embodiments of the present invention, and it describes comparatively concrete and detailed, 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 for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (5)
1. modified polyphenyl thioether/politef layered coated method of basalt fibre filter material, is characterized in that, comprising:
1) basalt fibre is made filtrate base cloth;
2) linear polyphenylene sulfide and over-expense chain polyphenylene sulfide are mixed and made into modified polyphenyl thioether emulsion;
3) modified polyphenyl thioether emulsion, ptfe emulsion and fluorine containing silane coupling agent are mixed and made into subbing;
4) by ptfe emulsion, fluorine containing silane coupling agent and F
46emulsion is mixed and made into investment precoat;
5) described filtrate base cloth 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.
2. modified polyphenyl thioether/politef layered coated the method for basalt fibre filter material according to claim 1, it is characterized in that, step 2) described in modified polyphenyl thioether emulsion be linear polyphenylene sulfide powder, the 3-5% hyperbranched polyphenylene sulfide powder of 5-10% by mass percent, surplus is water composition; Step 3) described in subbing by percentage be the modified polyphenyl thioether emulsion of 35-55%, the fluorine containing silane coupling agent of the ptfe emulsion of 40-60% and 5%-10% forms; Step 4) described in investment precoat be the ptfe emulsion of 40-50%, the F of 38-48% by percentage
46emulsion, surplus is water composition.
3. modified polyphenyl thioether/politef layered coated the method for basalt fibre filter material according to claim 1, it is characterized in that, step 2) described in modified polyphenyl thioether emulsion by mass percent be 8% linear polyphenylene sulfide powder, 4% hyperbranched polyphenylene sulfide powder, surplus be water composition; Step 3) described in subbing by percentage be the modified polyphenyl thioether emulsion of 40%, the ptfe emulsion of 55% and 5% fluorine containing silane coupling agent form; Step 4) described in investment precoat be the ptfe emulsion of 45%, the F of 40% by percentage
46emulsion, surplus is water composition.
4. modified polyphenyl thioether/politef layered coated the method for the basalt fibre filter material according to any one of claim 1-3, it is characterized in that, described hyperbranched polyphenylene sulfide joins in the 1-METHYLPYRROLIDONE of 0.8M by two chloro thiophenols of 50mmol and the Anhydrous potassium carbonate of 100mmol, be heated to 150 DEG C, be incubated 8.5 hours, after product hydrochloric acid washing and filtering, add oxolane to dissolve, hexane extraction, filtering drying is made, and the degree of polymerization is 8-12.
5. modified polyphenyl thioether/politef layered coated the method for the basalt fibre filter material according to any one of claim 1-3, it is characterized in that, 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.
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| CN201410481965.7A CN104389178B (en) | 2014-09-19 | 2014-09-19 | The modified polyphenyl thioether of a kind of basalt fibre filter material/polytetrafluoroethylene (PTFE) layered coated method |
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| CN201410481965.7A CN104389178B (en) | 2014-09-19 | 2014-09-19 | The modified polyphenyl thioether of a kind of basalt fibre filter material/polytetrafluoroethylene (PTFE) layered coated method |
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Cited By (5)
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| CN104963030A (en) * | 2015-06-01 | 2015-10-07 | 北京中铁润海科技有限公司 | Corrosion-resistant high-toughness high-strength composite fiber and production technology thereof |
| CN105169829A (en) * | 2015-08-26 | 2015-12-23 | 浙江宇邦滤材科技有限公司 | Aramid-fiber superfine-fiber needle-punched filter bag and preparation method thereof |
| 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 |
| CN105544121A (en) * | 2016-01-30 | 2016-05-04 | 上海仪耐新材料科技有限公司 | Efficient hydrophobic and oil-absorbing multistage treatment device |
| 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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| 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 |
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| 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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