CN101805958A - Polytetrafluoroethylene punched felt and manufacturing method thereof - Google Patents
Polytetrafluoroethylene punched felt and manufacturing method thereof Download PDFInfo
- Publication number
- CN101805958A CN101805958A CN200910024746A CN200910024746A CN101805958A CN 101805958 A CN101805958 A CN 101805958A CN 200910024746 A CN200910024746 A CN 200910024746A CN 200910024746 A CN200910024746 A CN 200910024746A CN 101805958 A CN101805958 A CN 101805958A
- Authority
- CN
- China
- Prior art keywords
- felt
- polytetrafluoroethylene
- fiber
- punched felt
- ptfe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Nonwoven Fabrics (AREA)
- Filtering Materials (AREA)
Abstract
The invention relates to a polytetrafluoroethylene punched felt. From the outside to the inside, the structure of the punched felt comprises a polytetrafluoroethylene crimped staple layer, a polytetrafluoroethylene filament base fabric and a polytetrafluoroethylene crimped staple layer, wherein the thickness of the punched felt ranges from 0.8 to 1.8 millimeters; polytetrafluoroethylene crimped staples mutually hooked and crossed are inserted in the base fabric from upside and downside and tightly connected with the base fabric. The punched felt produced by the invention has the advantages of stable chemical properties, high filtering effect, high strength, low heating shrinkage, low material consumption, low cost, no smoke pollution and the like.
Description
Technical field
The present invention relates to a kind of Nomex, particularly a kind of polytetrafluoroethylpunched punched felt and manufacture method thereof.
Background technology
Polytetrafluoroethylene (PTFE) is commonly called as Teflon; be described as " plastics king "; it is millions of even up to ten million that its relative molecular weight reaches, and molecular structure is big molecule linear structure, does not almost have side chain; big molecule both sides all are the C-F key; and press zigzag fashion and arrange, because the fluorine atom radius is bigger, thereby form a kind of very stable chemical bond; can the carbon atom shielding protection on the major key be got up, strand is difficult to be destroyed.Therefore, that the PTFE material has is well corrosion-resistant, heat resistance and non-oxidizability, except that fusion alkali metal, corroded by any chemical reagent, in addition, polytetrafluoroethylene (PTFE) can keep excellent mechanical property in-196 ℃～260 ℃ wide temperature range; Because the macromolecular dipole moment of PTFE be not with polarity substantially, so insulating properties is fine near zero; The surface free energy of PTFE is low, have not adhering to and lowest friction coefficient of height, also have fabulous noninflammability and ageing resistance, these advantages play the important and pivotal role it in national economy fields such as chemical industry, machinery, electronics, electrical equipment, military project, space flight, environmental protection and bridge.
Domestic polytetrafluoroethylene (PTFE) industry has had significant progress in recent years, wherein, in the fabrics for industrial use industry, possessed polytetrafluoroethyldispersion dispersion resin has been made the maturation process of making the fiber-like textile product, textiless such as fiber with its production, manufacture high-temperature filter material PTFE Nomex, under complex working condition, be used for smoke filtration, shown good properties of product and important economic value as bag-type dusting.At present, fast development along with domestic environmental protection industry, this PTFE Nomex is as high temperature resistant, anti-strong acid, alkali corrosion, and anti-oxidant, unhydrolyzed outstanding filtering material is widely used in bag-type dusting projects such as waste incineration, medical wastes incineration, dangerous waste incineration.
Produce the technology of PTFE fiber at present both at home and abroad, roughly have two kinds, a kind of is emulsion extruding spinning method, and a kind of is that film splits method.The fiber that the former produces, influence because of sintering, fiber strength is relatively poor, and there is a water pollution problems, the latter is the mode of production that comparatively generally adopts at present, still, because fiber is to make under the process conditions that repeatedly adding the hot extrusion drawing-off, the forward high elastic deformation rate of fiber is big, stability of fiber is relatively poor, owing to exist ultimate strength to be lower than general filtrate on the PTFE fibre property, and the defective that elongation at break is low, therefore after making Nomex, often powerful on the low side, dimensional stability to heating in house higher (＞3%), thus influence the stable of filter bag size, under long-term worst hot case, the friction breakage of filtrate and keel can occur or bag cage bedding bag is hanged down ejecting card, cause and blow spray system mechanics fault, exist generation static many in addition in the Nomex manufacturing process, technological difficulties such as the combing difficulty is big, and fibre loss is big.Also rare with the technology of 100% polytetrafluoroethylene (PTFE) production Nomex fully so far, Chinese patent CN200510045562.9 discloses a kind of preparation method of polytetrafluoroethylpunched punched felt, basically relating to static eliminates, heat and moisture preserving and general combing and needling process, not at the control dimensional stability to heating in house, the Nomex brute force, set forth clear and definite or effective method on the problem that the floating hair of fibre loss and postorder felt surface is handled, and these technology points are for product quality, cost, life-span is crucial, wherein this patent is mentioned the method that polytetrafluoroethylene (PTFE) is placed stainless steel cylinder release electrostatic and can only be reduced fiber live lotus in this step, effective elimination way is not proposed at the static that produces in the carding process, and take the method for singing in the processing of this patent at the floating hair in postorder felt surface, be to forbid the method used in the polytetrafluoroethylene (PTFE) process of producing product, because can produce hypertoxic accessory substance fluorophosgene and perfluoroisobutylene etc. during the polytetrafluoroethylene (PTFE) Pintsch process, suck these gases and can make people's neural paralysis and even threat to life, so pay special attention to security protection and prevent polytetrafluoroethylene (PTFE) contact naked light, in order to avoid cause smoke pollution.
Summary of the invention
The object of the present invention is to provide a kind of polytetrafluoroethylpunched punched felt and production technology thereof with low hot shrinkage rate, high-tenacity, material-saving environmental protection.
For achieving the above object, technical scheme of the present invention is: described polytetrafluoroethylpunched punched felt structure from up to down is successively: polytetrafluoroethylene (PTFE) crimped staple layer, polytetrafluoroethylene (PTFE) long filament base cloth, polytetrafluoroethylene (PTFE) crimped staple layer, and the Nomex thickness range is 0.8～1.8mm; Described base cloth is interspersed with the polytetrafluoroethylene (PTFE) crimped staple up and down; The acupuncture of described polytetrafluoroethylene (PTFE) crimped staple form mutual hook around, be tightly linked with base cloth.
Described polytef flocks fineness scope is 2～20den, and length range is 40～70mm, crispation number 8～12/25mm.
Described base cloth filament fineness scope is 400～500den, and the monofilament brute force is between 14N～18N, and any surface finish, cross section are circular.
The method of making above-mentioned polytetrafluoroethylpunched punched felt may further comprise the steps:
A. the polytef flocks layer under the rarefaction is contained into the stainless steel disk container, inserted layer by layer and carry out pre-HEAT SETTING in the electrocaloric effect;
B. to the back cooling of finalizing the design fiber carry out shredding, transfer in the hair bonding bin, add entry and antistatic additive fully mixes, airtight depositing more than 8 hours;
C. the fiber after airtight the depositing is inputed to cotton machine, feed fiber number according to the control of product, enter comb process just by meter electronics;
D. carding, carding machine is carded to certain thickness dimension net output with fiber, and the lapping machine will be tieed up stratum reticulare layer laying and reach predetermined thickness;
E. combing once more, lapping will be through after the dimension net stack behind just comb, the multiple comb, and the input needing machine will tie up that net and base cloth make between the fiber after through pre-thorn and multiple the thorn, fiber and base cloth interconnect the plain felt that formation has certain intensity;
F. plain felt is wiped out the floating hair in felt surface through adopting shearing machine behind the high-temperature shaping, guarantees the felt any surface finish, the packing of calendering clot then.
The heating-up temperature of pre-setting is between 250 ℃～280 ℃ among the described step a, and the duration is 1～2 hour; The weight ratio scope that adds entry among the step b in opening fiber is between 3%～4%, and the weight ratio scope that adds antistatic additive is between 1%～3%; The first comb of steps d and e, again comb process respectively by the warp-wise of dimension net and broadwise each once, carding process is through cylinder mechanism and doffer mechanism, and uses the steel wire fillet clothing, wherein cylinder is furnished with the comb unit that working roll and stripping hair roller are formed; The plain felt high-temperature shaping temperature range of step f is between 240 ℃～280 ℃, and typing speed is at 2～6m/min.
The present invention has following characteristics:
(1) short fiber layers of polytetrafluoroethylpunched punched felt is used crimped fibre among the present invention, can fortifying fibre with base cloth, fiber between hook around with saturated, reduced the space between the fiber, thereby the brute force of increase felt-cloth makes also felt-cloth can filter littler particulate.
(2) base cloth use polytetrafluoroethylene (PTFE) filament fiber, and fibre section is circular, smooth surface, can weaken the friction of draw point and fiber in the carding process and acupuncture greatly to the tear fracture of fiber with squeeze and hinder, thereby guaranteed the brute force of Nomex, reduced the noil loss, prolonged its service life.
(3) before the shredding of polytetrafluoroethylene (PTFE) short fiber, carry out the preheating typing earlier, make fiber reduce film and split the fiber deformation that factor time drawing-off causes in the process, impel high elasticity deformation to quicken to reply, thereby dimensional stability to heating in house is controlled at below 2%, can avoid after making Nomex, bigger than normal because of the filtrate dimensional stability to heating in house, cause dust-removal cloth-bag size instability, cloth bag rapid wear or cause the deduster fault.
(4) cylinder that adopts in the carding process, doffer's cooperating roller and stripping hair roller can be reconciled combing speed automatically; Add the elastic wire card clothing on the doffer, the damage that both all can make the fiber in the combing be subjected to reduces, reduce spillage of material, and effectively reduced the generation of static in the carding process, thereby guaranteed the neat and well spaced of lapping: fiber strength, length retention have obviously been improved through each carding process once of broadwise.
(5) adopt the tail preface of cropping calendering to handle, can make polytetrafluoroethylpunched punched felt and with its dust settling pocket any surface finish of making, the deashing ability strengthens, and the toxic gas of having avoided traditional handicraft to singe producing pollutes air and has a negative impact to operating personnel are healthy.
The specific embodiment
(embodiment 1)
Below be one of specific embodiment of the invention card:
1) be 2～20den with the fineness scope, length range is that the PTFE white short fiber of 40～70mm is contained in the stainless steel disc, successively puts within the electric heating shaping box, heats up in the sealing back, pick up counting when being warming up to 260 ℃, cutting off the electricity supply after 2 hours, it is cool to manually operating to open chamber door.
2) fiber opening after the typing spreads at He Maocang, uses sprayer unit spray water and antistatic additive mixed liquor, weight proportion is a fiber: water: antistatic additive=100: 3: 2, after mixing, close door, store 8～10 hours, time autumn and winter can be long slightly.
Fiber when 3) storage is sufficient is sent into the feeding hopper, according to design technology grammes per square metre 700～800g/m
2The hopper electronic controller is regulated in requirement.When receiving cone reached setting weight, fiber fell into the feeding bridge automatically.
4) frequency converter is regulated the combing speed of cylinder, doffer and working roll automatically according to stressed, guarantees the uniformity of combing and minimizing and fibre frictoin and to the damage of fiber under the elastic wire card clothing cooperates.After the dimension net was just combed, combed again through warp-wise, it was even to have reached thickness, and it is staggered that fiber is two dimension.
5) behind the multiple thorn of the pre-thorn of dimension net and base cloth process, the formin felt.
6) plain felt enters the cropping operation through behind the high-temperature shaping, the cutter 0.1mm that spaces, and the cropping twice can be wiped out the floating hair of cloth cover continuously.Thereafter, enter the tail preface of high temperature satinage, by the Nomex that above step makes, thickness is 1.20mm, and intensity is warp-wise 817N/5 * 20cm, broadwise 851N/5 * 20cm; Warp-wise elongation at break 5%, broadwise elongation at break 17.3%, air permeability are 10.24m
3/ m
2.min.
Implement above-mentioned technology manufacturing, ambient temperature and humidity is just had certain requirement, especially should be noted that the autumn and winter there was an abrupt change in weather to require to increase the antistatic additive consumption and increase the air humidity or the temperature that controls environment season.In addition to the implementation, the present invention can have other embodiments in addition, and all employings are equal to replaces or equivalent transformation carries out to the present invention that unsubstantiality changes, and all drops in the protection domain of requirement of the present invention.
Claims (9)
1. polytetrafluoroethylpunched punched felt, it is characterized in that: described polytetrafluoroethylpunched punched felt structure from up to down is successively: polytetrafluoroethylene (PTFE) crimped staple layer, polytetrafluoroethylene (PTFE) long filament base cloth, polytetrafluoroethylene (PTFE) crimped staple layer, and the Nomex thickness range is 0.8～1.8mm; Described base cloth is interspersed with the polytetrafluoroethylene (PTFE) crimped staple up and down; The acupuncture of described polytetrafluoroethylene (PTFE) crimped staple form mutual hook around, be tightly linked with base cloth.
2. polytetrafluoroethylpunched punched felt according to claim 1 is characterized in that: described polytef flocks fineness scope is 2～20den, and length range is 40～70mm, crispation number 8～12/25mm.
3. polytetrafluoroethylpunched punched felt according to claim 1 is characterized in that: described base cloth filament fineness scope is 400～500den, and the monofilament brute force is between 14N～18N, and any surface finish, cross section are circular.
4. method of making above-mentioned polytetrafluoroethylpunched punched felt is characterized in that: may further comprise the steps:
A. the polytef flocks layer under the rarefaction is contained into the stainless steel disk container, inserted layer by layer and carry out pre-HEAT SETTING in the electrocaloric effect;
B. the back cooled fibers of finalizing the design is carried out shredding, transfer in the hair bonding bin, add entry and antistatic additive fully mixes, airtight depositing more than 8 hours;
C. the fiber after airtight the depositing is inputed to cotton machine, feed fiber number according to the control of product, enter comb process just by meter electronics;
D. carding, carding machine is carded to certain thickness dimension net output with fiber, and the lapping machine will be tieed up stratum reticulare layer laying and reach predetermined thickness;
E. combing once more, lapping will be through after the dimension net stack behind just comb, the multiple comb, and the input needing machine will tie up that net and base cloth make between the fiber after through pre-thorn and multiple the thorn, fiber and base cloth interconnect the plain felt that formation has certain intensity;
F. plain felt is wiped out the floating hair in felt surface through adopting shearing machine behind the high-temperature shaping, guarantees the felt any surface finish, the packing of calendering clot then.
5. according to the method for the described manufacturing polytetrafluoroethylpunched punched felt of claim 4, it is characterized in that: the heating-up temperature of pre-setting is between 250 ℃～280 ℃ among the described step a, and the duration is 1～2 hour.
6. according to the method for the described manufacturing polytetrafluoroethylpunched punched felt of claim 4, it is characterized in that: the weight ratio scope that adds entry among the described step b in opening fiber is between 3%～4%, and the weight ratio scope that adds antistatic additive is between 1%～3%.
7. according to the method for the described manufacturing polytetrafluoroethylpunched punched felt of claim 4, it is characterized in that: the first comb of described steps d and e, again comb process respectively by the warp-wise of dimension net and broadwise each once.
8. according to the method for the described manufacturing polytetrafluoroethylpunched punched felt of claim 7, it is characterized in that: the carding process of described steps d and e is through cylinder mechanism and doffer mechanism, and use the steel wire fillet clothing, wherein cylinder is furnished with the comb unit of working roll and stripping hair roller composition.
9. according to the method for the described manufacturing polytetrafluoroethylpunched punched felt of claim 4, it is characterized in that: the plain felt high-temperature shaping temperature range of described step f is between 240 ℃～280 ℃, and typing speed is at 2～6m/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100247465A CN101805958B (en) | 2009-02-13 | 2009-02-13 | Polytetrafluoroethylene punched felt and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100247465A CN101805958B (en) | 2009-02-13 | 2009-02-13 | Polytetrafluoroethylene punched felt and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101805958A true CN101805958A (en) | 2010-08-18 |
| CN101805958B CN101805958B (en) | 2012-04-18 |
Family
ID=42607907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100247465A Active CN101805958B (en) | 2009-02-13 | 2009-02-13 | Polytetrafluoroethylene punched felt and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101805958B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102560714A (en) * | 2010-12-27 | 2012-07-11 | 山东嘉年华氟纶有限公司 | PTFE (Polytetrafluoroethylene) low-shrinkage crimped chopped fiber for filter needled-punched felt and manufacturing method of PTFE low-shrinkage crimped chopped fiber |
| CN106567189A (en) * | 2016-11-04 | 2017-04-19 | 东华大学 | Method for preparing high-performance PTFE fiber paper |
| CN106637680A (en) * | 2016-12-30 | 2017-05-10 | 青岛大学 | Polytetrafluoroethylene filament non-woven fabric based on film tearing method and preparation technology thereof |
| CN106757791A (en) * | 2016-12-30 | 2017-05-31 | 青岛大学 | Non-woven fabric and its preparation technology based on polytetrafluoroethylene film |
| CN106987962A (en) * | 2013-09-17 | 2017-07-28 | W.L.戈尔及同仁股份有限公司 | Compliance microporous fibre and the braided fabric containing the fiber |
| CN109402869A (en) * | 2018-12-04 | 2019-03-01 | 江苏恒锐环保科技有限公司 | Polytetrafluoroethylpunched punched felt and its manufacturing method |
| CN109610088A (en) * | 2018-12-29 | 2019-04-12 | 苏州爱美纤维科技有限公司 | A kind of upright continuous material and preparation method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100489174C (en) * | 2005-12-16 | 2009-05-20 | 厦门三维丝环保工业有限公司 | Production process of polytetrafluoroethylene fiber acupuncture filtering felt |
| CN201135832Y (en) * | 2007-12-21 | 2008-10-22 | 上海市凌桥环保设备厂有限公司 | High intensity tetrafluoroethylene gradient overlay film filter material |
| CN201171942Y (en) * | 2007-12-25 | 2008-12-31 | 厦门三维丝环保工业有限公司 | Mixed needling filter felt |
| CN201192606Y (en) * | 2008-05-20 | 2009-02-11 | 南京际华三五二一特种装备有限公司 | Fluorine fiber high temperature filter material as dust face |
-
2009
- 2009-02-13 CN CN2009100247465A patent/CN101805958B/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102560714A (en) * | 2010-12-27 | 2012-07-11 | 山东嘉年华氟纶有限公司 | PTFE (Polytetrafluoroethylene) low-shrinkage crimped chopped fiber for filter needled-punched felt and manufacturing method of PTFE low-shrinkage crimped chopped fiber |
| CN106987962A (en) * | 2013-09-17 | 2017-07-28 | W.L.戈尔及同仁股份有限公司 | Compliance microporous fibre and the braided fabric containing the fiber |
| CN106987962B (en) * | 2013-09-17 | 2018-08-14 | W.L.戈尔及同仁股份有限公司 | Compliance microporous fibre and braided fabric containing the fiber |
| CN106567189A (en) * | 2016-11-04 | 2017-04-19 | 东华大学 | Method for preparing high-performance PTFE fiber paper |
| CN106637680A (en) * | 2016-12-30 | 2017-05-10 | 青岛大学 | Polytetrafluoroethylene filament non-woven fabric based on film tearing method and preparation technology thereof |
| CN106757791A (en) * | 2016-12-30 | 2017-05-31 | 青岛大学 | Non-woven fabric and its preparation technology based on polytetrafluoroethylene film |
| CN106757791B (en) * | 2016-12-30 | 2021-09-03 | 青岛大学 | Novel non-woven fabric based on polytetrafluoroethylene film and preparation process thereof |
| CN109402869A (en) * | 2018-12-04 | 2019-03-01 | 江苏恒锐环保科技有限公司 | Polytetrafluoroethylpunched punched felt and its manufacturing method |
| CN109402869B (en) * | 2018-12-04 | 2020-12-15 | 江苏恒锐环保科技有限公司 | Method for manufacturing polytetrafluoroethylene needled felt |
| CN109610088A (en) * | 2018-12-29 | 2019-04-12 | 苏州爱美纤维科技有限公司 | A kind of upright continuous material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101805958B (en) | 2012-04-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101805958B (en) | Polytetrafluoroethylene punched felt and manufacturing method thereof | |
| CN105401334B (en) | A kind of preparation method of needle punched non-woven fabrics | |
| JP3079571B2 (en) | Polytetrafluoroethylene fiber, cotton-like material containing the same, and method for producing the same | |
| CN101856577B (en) | Heat-resistant basalt fibre filter material and preparation method thereof | |
| CN105709504A (en) | High-efficiency spunlace filter material and preparing method thereof | |
| CN102152556A (en) | Polyester needle punched felt and production method thereof | |
| CN102631812B (en) | Production technique of ultrafiltration bag | |
| CN106563691B (en) | Waste and old sodolin recyclable device and its recovery method | |
| CN107604532B (en) | Surface layer material of filter bag, flue gas treatment system and treatment method | |
| JP3152748U (en) | Carbon nonwoven fabric | |
| CN104562441A (en) | Manufacturing process of regenerate fiber board | |
| CN113652799B (en) | Preparation process method of needling dust removal filter cloth | |
| CN109289329A (en) | A kind of cement kiln dust removal and filtration material and preparation method thereof | |
| CN105688512A (en) | Spunlace precise surface filter material and preparation method thereof | |
| CN101962874A (en) | Non-weaving manufacturing method for metal fiber meshes | |
| CN108499222B (en) | Polyether-ether-ketone filter felt and preparation method thereof | |
| CN114108178B (en) | PTFE filter felt production process based on decrement method | |
| CN110616485A (en) | Blended yarn of bio-based modified polyester fiber and cotton fiber and production method thereof | |
| KR20120114036A (en) | High temperature fabric filter and meathod for manufacturing the same | |
| CN102319528A (en) | Phenolic fiber high-temperature filtration dust removing felt and production method thereof | |
| US3789026A (en) | Process for the production of regenerate | |
| CN115382301B (en) | High-temperature-resistant glass fiber composite-based water-jet filter material and preparation method thereof | |
| KR101483368B1 (en) | Needle punching non-woven fabric having an improved property and manufacturing method thereof | |
| CN112080851A (en) | Heat-insulating felt and manufacturing method and production equipment thereof | |
| CN110314447A (en) | A kind of preparation method of automatically cleaning dust removal and filtration material and filtering material obtained |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Jue Fuming Inventor after: Jue Lei Inventor before: Jue Fuming Inventor before: Chen Minggang Inventor before: Jue Lei |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: QUE FUMING CHEN MINGGANG QUE LEI TO: QUE FUMING QUE LEI |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 213004 No. 355 labour East Road, Tianning District, Jiangsu, Changzhou Patentee after: CHANGZHOU HUAFU ENVIRONMENT TECHNOLOGY CO., LTD. Address before: 213000 No. 355 labour East Road, Changzhou, Jiangsu Patentee before: Changzhou Dongxin Huafu Fluoroplastic Material Co., Ltd. |