CN104801109A - High-performance high temperature-resistant glass fiber coated nonwoven filter material and preparation method thereof - Google Patents
High-performance high temperature-resistant glass fiber coated nonwoven filter material and preparation method thereof Download PDFInfo
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- CN104801109A CN104801109A CN201410037550.0A CN201410037550A CN104801109A CN 104801109 A CN104801109 A CN 104801109A CN 201410037550 A CN201410037550 A CN 201410037550A CN 104801109 A CN104801109 A CN 104801109A
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Abstract
The invention relates to a high-performance high temperature-resistant glass fiber coated nonwoven filter material. The filter material sequentially comprises a PTFE micro-porous film and a nonwoven needled felt layer from top to bottom; the nonwoven needled felt layer sequentially comprises a first glass fiber and high temperature-resistant fiber blend layer, a base cloth layer and a second glass fiber and high temperature-resistant fiber blend layer from top to bottom; and the nonwoven needled felt undergoes PTFE emulsion full impregnation treatment. In the invention, warp yarns of the above base cloth are obtained by embedding PTFE filament fibers into glass fiber filaments at intervals, effectively improve the acid and alkali resistance and the flexibility resistance of the base cloth and further prolong the service life of the filter material. High temperature resistant fiber blend layers can be formed by one or above one type of high temperature-resistant fiber materials according to practical conditions, and matching combination of different fibers can realize accurate meeting of use requirements and high cost performance.
Description
Technical field
The present invention relates to a kind of high-performance high temperature resistance glass fiber overlay film non-woven filter material and preparation method thereof, particularly relate to a kind of containing glass fibre and through the filtering material and preparation method thereof of polytetrafluoroethylmaterial material post processing.
Background technology
Although high-temperature flue gas filtration material conventional at present can use more than 200 DEG C, but service life is generally lower than 3 years, equipment running resistance is accumulative and rise with service time, smoke filtration precision and operating cost barely satisfactory, the demand of portions of client cannot be met.
Summary of the invention
For solving the deficiencies in the prior art, technical problem to be solved by this invention is to provide a kind of high-performance high temperature resistance glass fiber overlay film non-woven filter material.
The present invention seeks to be achieved through the following technical solutions:
A kind of high-performance high temperature resistance glass fiber overlay film non-woven filter material, is followed successively by PTFE microporous film layers from top to bottom and non-woven mat layer forms;
Described nonwoven acupuncture layer is from top to bottom followed successively by, the first glass fibre and high-temperature fibre blended layer, base cloth layer and the second glass fibre and high-temperature fibre blended layer;
Described non-woven mat layer is through the full impregnation process of PTFE emulsion.
Preferably,
Described first glass fibre and high-temperature fibre blended layer, form by the component of following weight percentage is blended: glass fibre 60-80%, high-temperature fibre 20-40%; Described high-temperature fibre can be that the long-term serviceability temperatures such as polyimide fiber, polytetrafluoroethylene fibre, PPSU terephthalamide fiber, poly-fragrant oxadiazole fiber are higher than the mixture of one or more in the fibrous material of 220 DEG C.
The warp thread of described base cloth layer is filament of glass fiber, and every embedding PTFE long filament in described warp thread, the weft yarn of described base cloth layer is filament of glass fiber, is processed into Ji Bu by industry current techique, and the grammes per square metre of described base cloth layer is preferably 300-450g/ ㎡.
Preferably, described in base cloth, warp thread is, embeds a PTFE long filament every two filament of glass fiber, effectively improves acid-proof alkaline and the folding quality of base cloth, further increases the service life of filtrate.
Described second glass fibre and high-temperature fibre blended layer, form by the component of following weight percentage is blended: glass fibre 80-90%, high-temperature fibre 10-20%; Described high-temperature fibre can be that the long-term serviceability temperatures such as polyimide fiber, polytetrafluoroethylene fibre, PPSU terephthalamide fiber, poly-fragrant oxadiazole fiber are higher than the mixture of one or more in the fibrous material of 220 DEG C.
It is in the present invention, concrete,
Described PTFE microporous barrier, be with dispersed polytetrafluoroethylresin (PTFE) toner for raw material, after expanded stretching, form one there is micro porous film.
Described polyimide fiber, also known as P84 fiber, refers to contain fragrant imido fiber in strand, comprises ethers and ketone.Ethers homopolymerization fibre strength 4 ~ 5cN/dtex, percentage elongation 5% ~ 7%, modulus 10 ~ 12GPa, 300 DEG C after 100h strength retention be 50% ~ 70%, limited oxygen index 44, resistance to ray is good; Ketone copolymer fibre has the section of approximate hollow, intensity 3.8cN/dtex, percentage elongation 32%, modulus 35cN/dtex, density 1.41g/cm, and boiling water and 250 DEG C of shrinkage factors are respectively less than 0.5% and 1%.
Polytetrafluoroethylene fibre, English polytetrafluoroethylenefibre by name, be abbreviated as PTFE fiber, chemical formula is [-CF
2-CF
2-]
n, China claims teflon.Be raw material by polytetrafluoroethylene (PTFE) (see fluororesin), through spinning or cutting or fibrillation and obtained a kind of synthetic fibers polytetrafluoroethylene fibre intensity 17.7 ~ 18.5cN/dtex after making film, percentage elongation 25% ~ 50%.
Described PPSU terephthalamide fiber, i.e. polysulphonamide fiber, is abbreviated as PSA fiber.
Described Ju Fang oxadiazole fiber, English name: Poly-1,3,4-oxadiazole, is abbreviated as POD fiber.
Described polytetrafluoroethylene (PTFE), English name is Polytetrafluoroethylene, and english abbreviation is PTFE, No. cas: 9002-84-0.
Described glass fibre, be called for short glass, English by name: glassfiber or fiberglass, english abbreviation is GF, No. CAS: 14808-60-7, glass fibre is higher than organic fiber heatproof, do not fire, anti-corruption, heat insulation, sound-proofing good (particularly mineral wool), tensile strength is high, electrical insulating property good (as alkali-free glass fibre).The main component of glass fibre is silica, aluminium oxide, calcium oxide, boron oxide, magnesia, sodium oxide molybdena etc., according to the number of alkali content in glass, alkali-free glass fibre (sodium oxide molybdena 0% ~ 2% can be divided into, belong to aluminium borosilicate glass), medium-alkali glass fibre (sodium oxide molybdena 8% ~ 12%, the soda lime glass of genus boracic or not boracic) and high alkali glass fibre (sodium oxide molybdena more than 13% belongs to soda lime glass).According to the actual demand of user, different types of glass fibre can be selected in the present invention.
Present invention also offers the preparation method of described high-performance high temperature resistance glass fiber overlay film non-woven filter material, it comprises the steps:
(1) take raw material by proportioning, after shredding, mixing, combing, add the lapping of base cloth, then through pre-needling, main acupuncture, make non-woven mat layer;
(2) again through high-temperature hot sizing, calendering of singing, the full impregnation process of PTFE emulsion, to bake and bank up with earth and baked and cured in advance, it is laminating itself and PTFE microporous barrier to be carried out high temperature hot pressing.
Concrete, Ke Yiwei:
(1) take glass fibre and high-temperature fibre by proportioning, after shredding, mixing, combing, make the first glass fibre and high-temperature fibre blended layer;
(2) take glass fibre and high-temperature fibre by proportioning, after shredding, mixing, combing, make the second glass fibre and high-temperature fibre blended layer;
(3) using every embedding the filament of glass fiber of PTFE long filament as warp thread, glass filament fiber, as weft yarn, makes base cloth layer;
(4) what the first glass fibre and high-temperature fibre blended layer and the second glass fibre and high-temperature fibre blended layer are placed in respectively base cloth layer carries out lapping up and down, then through pre-needling, main acupuncture, makes non-woven mat layer;
(5) again through high-temperature hot sizing, calendering of singing, the full impregnation process of PTFE emulsion, to bake and bank up with earth and baked and cured in advance, it is laminating non-woven mat layer and PTFE microporous barrier to be carried out high temperature hot pressing.
In the present invention, base cloth warp thread be in filament of glass fiber every embedding PTFE filament fiber, effectively improve acid-proof alkaline and the folding quality of base cloth, further increase the service life of filtrate.
High-temperature fibre blended layer is different according to actual condition, and can be made up of one or more refractory fibrous materials, different fiber matched combined, more accurately can meet instructions for use, and have more superiority of effectiveness.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described.The PTFE microporous barrier used in embodiment is PTFE high compactness microporous barrier, its tool fibrillation shape microcellular structure, and porosity more than 85%, every square centimeter about has 1,400,000,000 micropores.
Embodiment 1
Take 60 kilograms of glass fibres, 40 kilograms of polytetrafluoroethylene fibres, after shredding, mixing, combing, make the first glass fibre and high-temperature fibre blended layer;
Take 80 kilograms of glass fibres, 20 kilograms of polytetrafluoroethylene fibres, after shredding, mixing, combing, make the second glass fibre and high-temperature fibre blended layer;
Embed a PTFE long filament as warp thread every two filament of glass fiber, glass filament fiber, as weft yarn, makes base cloth layer, and base cloth layer grammes per square metre is 400g/ ㎡;
What the first glass fibre and high-temperature fibre blended layer and the second glass fibre and high-temperature fibre blended layer are placed in respectively base cloth layer carries out lapping up and down, then through pre-needling, main acupuncture, makes non-woven mat layer;
Again through high-temperature hot sizing, calendering of singing, the full impregnation process of PTFE emulsion, to bake and bank up with earth and baked and cured in advance, it is laminating non-woven mat layer and PTFE microporous barrier to be carried out high temperature hot pressing, obtains the high-performance high temperature resistance glass fiber overlay film non-woven filter material of embodiment 1.
Embodiment 2
Take 80 kilograms of glass fibres, 20 kilograms of PSA fibers, after shredding, mixing, combing, make the first glass fibre and high-temperature fibre blended layer;
Take 90 kilograms of glass fibres, 10 kilograms of PSA fibers, after shredding, mixing, combing, make the second glass fibre and high-temperature fibre blended layer;
Then the high-performance high temperature resistance glass fiber overlay film non-woven filter material of embodiment 2 is prepared according to all the other steps of embodiment 1.
Embodiment 3
Take 70 kilograms of glass fibres, 30 kilograms of P84 fibers, after shredding, mixing, combing, make the first glass fibre and high-temperature fibre blended layer;
Take 80 kilograms of glass fibres, 20 kilograms of polytetrafluoroethylene fibres, after shredding, mixing, combing, make the second glass fibre and high-temperature fibre blended layer;
Then the high-performance high temperature resistance glass fiber overlay film non-woven filter material of embodiment 3 is prepared according to all the other steps of embodiment 1.
Embodiment 4
Take 60 kilograms of glass fibres, 40 kilograms of PSA fibers, after shredding, mixing, combing, make the first glass fibre and high-temperature fibre blended layer;
Take 90 kilograms of glass fibres, 10 kilograms of P84 fibers, after shredding, mixing, combing, make the second glass fibre and high-temperature fibre blended layer;
Then the high-performance high temperature resistance glass fiber overlay film non-woven filter material of embodiment 4 is prepared according to all the other steps of embodiment 1.
Embodiment 5
Take 70 kilograms of glass fibres, 30 kilograms of polytetrafluoroethylene fibres, after shredding, mixing, combing, make the first glass fibre and high-temperature fibre blended layer;
Take 90 kilograms of glass fibres, 10 kilograms of Powerleader synthetic fibre fibers (POD fiber), after shredding, mixing, combing, make the second glass fibre and high-temperature fibre blended layer;
Then the high-performance high temperature resistance glass fiber overlay film non-woven filter material of embodiment 5 is prepared according to all the other steps of embodiment 1.
The filtering material that the present invention obtains, not only has resistant to elevated temperatures performance, also effectively improves acid-proof alkaline and folding quality, further increase the service life of filtering material.
Claims (8)
1. a high-performance high temperature resistance glass fiber overlay film non-woven filter material, is characterized in that: be followed successively by PTFE microporous film layers from top to bottom and non-woven mat layer forms;
Described nonwoven acupuncture layer is from top to bottom followed successively by, the first glass fibre and high-temperature fibre blended layer, base cloth layer and the second glass fibre and high-temperature fibre blended layer;
Described non-woven mat layer is through the full impregnation process of PTFE emulsion.
2. high-performance high temperature resistance glass fiber overlay film non-woven filter material as claimed in claim 1, it is characterized in that: described first glass fibre and high-temperature fibre blended layer, form by the component of following weight percentage is blended: glass fibre 60-80%, high-temperature fibre 20-40%.
3. high-performance high temperature resistance glass fiber overlay film non-woven filter material as claimed in claim 2, is characterized in that: described high-temperature fibre is the mixture of one or more in polyimide fiber, polytetrafluoroethylene fibre, PPSU terephthalamide fiber, Ju Fang oxadiazole fiber.
4. high-performance high temperature resistance glass fiber overlay film non-woven filter material as claimed in claim 1, is characterized in that: the warp thread of described base cloth layer is filament of glass fiber, and every embedding PTFE long filament in described warp thread, the weft yarn of described base cloth layer is filament of glass fiber.
5. high-performance high temperature resistance glass fiber overlay film non-woven filter material as claimed in claim 4, is characterized in that: the grammes per square metre of described base cloth layer is 300-450g/ ㎡.
6. high-performance high temperature resistance glass fiber overlay film non-woven filter material as claimed in claim 1, it is characterized in that: described second glass fibre and high-temperature fibre blended layer, form by the component of following weight percentage is blended: glass fibre 80-90%, high-temperature fibre 10-20%.
7. high-performance high temperature resistance glass fiber overlay film non-woven filter material as claimed in claim 6, is characterized in that: described high-temperature fibre is the mixture of one or more in polyimide fiber, polytetrafluoroethylene fibre, PPSU terephthalamide fiber, Ju Fang oxadiazole fiber.
8. the preparation method of high-performance high temperature resistance glass fiber overlay film non-woven filter material according to any one of claim 1-7, is characterized in that, comprise the steps:
(1) take raw material by proportioning, after shredding, mixing, combing, add the lapping of base cloth, then through pre-needling, main acupuncture, make non-woven mat layer;
(2) again through thermal finalization, calendering of singing, the full impregnation process of PTFE emulsion, to bake and bank up with earth and baked and cured in advance, itself and PTFE microporous barrier are carried out hot pressing cladding.
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| CN105498361A (en) * | 2015-12-29 | 2016-04-20 | 江苏蓝天环保集团股份有限公司 | Polyester-ultrafine fiber composite nonwoven filter felt and making method thereof |
| CN105879493A (en) * | 2016-04-22 | 2016-08-24 | 苏州派欧技术咨询服务有限公司 | Preparation method of composite filter material |
| CN106582112A (en) * | 2016-11-04 | 2017-04-26 | 中材科技股份有限公司 | Flue gas purifying filter material for semi-dry desulphurization and preparation method thereof |
| CN108261838A (en) * | 2018-02-05 | 2018-07-10 | 安徽元琛环保科技股份有限公司 | A kind of special filtrate of waste incineration and its preparation method and application |
| CN109572123A (en) * | 2018-11-16 | 2019-04-05 | 江苏恒生环保科技有限公司 | Woven knitting composite construction based high-temp-resistant environmental protection filtrate of one kind and preparation method thereof |
| CN109925794A (en) * | 2019-04-08 | 2019-06-25 | 江西昊瑞工业材料有限公司 | A kind of bacteriological filter bag and preparation method thereof that filter effect is good |
| CN110975418A (en) * | 2019-12-18 | 2020-04-10 | 南京玻璃纤维研究设计院有限公司 | Composite fiber filter material and preparation method thereof |
| CN111389095A (en) * | 2020-04-06 | 2020-07-10 | 台州市皓天产业用布股份有限公司 | High silica polytetrafluoroethylene tectorial membrane filter cloth |
| CN115337722A (en) * | 2022-06-22 | 2022-11-15 | 南京玻璃纤维研究设计院有限公司 | One-step method membrane-coated filter material forming process and membrane-coated filter material |
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|---|---|---|---|---|
| CN105498361A (en) * | 2015-12-29 | 2016-04-20 | 江苏蓝天环保集团股份有限公司 | Polyester-ultrafine fiber composite nonwoven filter felt and making method thereof |
| CN105879493A (en) * | 2016-04-22 | 2016-08-24 | 苏州派欧技术咨询服务有限公司 | Preparation method of composite filter material |
| CN106582112A (en) * | 2016-11-04 | 2017-04-26 | 中材科技股份有限公司 | Flue gas purifying filter material for semi-dry desulphurization and preparation method thereof |
| CN106582112B (en) * | 2016-11-04 | 2019-04-16 | 中材科技股份有限公司 | A kind of semi-dry desulphurization gas cleaning filtrate and preparation method thereof |
| CN108261838A (en) * | 2018-02-05 | 2018-07-10 | 安徽元琛环保科技股份有限公司 | A kind of special filtrate of waste incineration and its preparation method and application |
| CN109572123A (en) * | 2018-11-16 | 2019-04-05 | 江苏恒生环保科技有限公司 | Woven knitting composite construction based high-temp-resistant environmental protection filtrate of one kind and preparation method thereof |
| CN109925794A (en) * | 2019-04-08 | 2019-06-25 | 江西昊瑞工业材料有限公司 | A kind of bacteriological filter bag and preparation method thereof that filter effect is good |
| CN110975418A (en) * | 2019-12-18 | 2020-04-10 | 南京玻璃纤维研究设计院有限公司 | Composite fiber filter material and preparation method thereof |
| WO2021120484A1 (en) * | 2019-12-18 | 2021-06-24 | 南京玻璃纤维研究设计院有限公司 | Complex fiber filter material and preparation method therefor |
| CN110975418B (en) * | 2019-12-18 | 2021-08-17 | 南京玻璃纤维研究设计院有限公司 | Composite fiber filter material and preparation method thereof |
| CN111389095A (en) * | 2020-04-06 | 2020-07-10 | 台州市皓天产业用布股份有限公司 | High silica polytetrafluoroethylene tectorial membrane filter cloth |
| CN115337722A (en) * | 2022-06-22 | 2022-11-15 | 南京玻璃纤维研究设计院有限公司 | One-step method membrane-coated filter material forming process and membrane-coated filter material |
| CN115337722B (en) * | 2022-06-22 | 2024-03-29 | 南京玻璃纤维研究设计院有限公司 | One-step method film-coated filter material forming process and film-coated filter material |
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Application publication date: 20150729 |