CN2097738U - Polytetrafluoroethylene welding tight lining product - Google Patents
Polytetrafluoroethylene welding tight lining product Download PDFInfo
- Publication number
- CN2097738U CN2097738U CN 91223020 CN91223020U CN2097738U CN 2097738 U CN2097738 U CN 2097738U CN 91223020 CN91223020 CN 91223020 CN 91223020 U CN91223020 U CN 91223020U CN 2097738 U CN2097738 U CN 2097738U
- Authority
- CN
- China
- Prior art keywords
- ptfe
- fabric
- band
- liner
- shell
- 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.)
- Withdrawn
Links
- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims abstract description 67
- 239000004810 polytetrafluoroethylene Substances 0.000 title claims abstract description 67
- -1 Polytetrafluoroethylene Polymers 0.000 title claims abstract description 4
- 238000003466 welding Methods 0.000 title claims description 18
- 239000004744 fabric Substances 0.000 claims description 23
- 150000001875 compounds Chemical class 0.000 claims description 12
- 239000003365 glass fiber Substances 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 239000011230 binding agent Substances 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 241000251468 Actinopterygii Species 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000011152 fibreglass Substances 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 238000005728 strengthening Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims 2
- 239000000654 additive Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 19
- 238000005516 engineering process Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000007704 transition Effects 0.000 abstract description 3
- 230000004927 fusion Effects 0.000 abstract description 2
- 230000003014 reinforcing effect Effects 0.000 abstract 3
- 230000007547 defect Effects 0.000 abstract 1
- 239000002131 composite material Substances 0.000 description 8
- 239000010408 film Substances 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 3
- 229920002313 fluoropolymer Polymers 0.000 description 3
- 239000004811 fluoropolymer Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- 229920006358 Fluon Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- KDFQYGBJUYYWDJ-UHFFFAOYSA-N azane;sodium Chemical compound N.[Na] KDFQYGBJUYYWDJ-UHFFFAOYSA-N 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Laminated Bodies (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The utility model relates to a with the help of one kind not only can with the PTFE complete fusion bond but also can with the transition layer that the reinforcing shell bonded between Polytetrafluoroethylene inside lining and the reinforcing shell, with the tight product of lining among the reinforcing shell of PTFE inside lining, this product has overcome the defect on the technology manufacturing that the PTFE inadhesion brought, and the PTFE inside lining expend with heat and contract with cold greatly, yielding, shortcoming such as not resistant negative pressure. And has the advantages of simple process, high productivity and the like, and the utility model can provide series products such as pipelines, pipe fittings, towers, equipment and the like.
Description
The utility model relate to a kind of polytetrafluoroethylene (PTFE) liner and strengthen between the shell by means of a kind of not only with the complete clinkering of PTFE but also can with the transition zone that strengthens the shell bonding, with the tight lining of PTFE liner at the series of products that strengthen among the shell.
Known PTFE lining products as pipeline, pipe fitting, tower, equipment etc., is made up of shell and PTFE liner two parts." loose lining method " that microgap is arranged between producer's employing liner and the shell arranged, and as welding, winding method, the product of its formation has liner and shell is easily separated, yielding, creep, the amount of expanding with heat and contract with cold is big, not anti-negative pressure, shortcoming such as liner twists easily and breaks sometimes, and the commissure is easily broken.Also there is producer to adopt " tightly serving as a contrast method " almost very close to each other between liner and the shell, as hydraulic method; The outer diameter of steel pipes roll extrusion method that diminishes; The liner resilience becomes big method.These method complex process, the cost height, productivity ratio is low.And still have the interface to have the shortcoming that exists loose lining method to be had equally between PTFE liner and the shell.About the bonding technology of PTFE and metal, the method for chemical treatment of useful sodium-ammonia solution has the discharge process method, the radiation grafting method.Utilize glass fibre to make transition zone, utilize the PTFE dispersion liquid as cementing medium, as Jilin Province's product; Utilize PFA or other fluoropolymer polymer as cementing medium, as the product of the clear 57-5180 of Japan and clear 60-115440 and du pont company.Because PTFE itself has not viscosity, PTFE interliner intensity difference, anti-stripping property is poor, complex process, nor can make the lining of pipe-line equipment etc., result of use is undesirable.
The purpose of this utility model provides a kind of even more ideal PTFE lining products, it is remarkable in conjunction with effect, and product has the mechanical strength height, and it is little to expand with heat and contract with cold, indeformable, anti-negative pressure, be difficult for creep, technology is simple, the productivity ratio height, cost is low, PTFE liner and the novel tight lining lining products that strengthens the complete clinkering of shell.
The technical solution of the utility model is that a, multilayer PTFE film twine to be superimposed upon and form certain thickness PTFE inner liner on the mould; The outside stack width of b, PTFE inner liner equates, one deck PTFE film band that thickness is close and one deck fabric band, and PTFE film band is in the paving, lining, the fabric band is the paving outside, and simultaneously, in the same way, the Duplication with 50% is twined and is superimposed upon on the PTFE inner liner, and this forms compound welding layer; C, tie up the technology glass fiber tape, tying up tension force is 10～100Kgf; D, it is inserted heat up in the sintering furnace sintering, insulation, cooling; E, pull down the technology glass fiber tape; F, slough mould, the PTFE composite material as liner pipe that must form by PTFE inner liner and the complete clinkering of compound clinkering layer; G, on the compound welding layer of PTFE composite material as liner pipe, directly coating adhesive, or first coating adhesive repaves one or more layers fabric, coating adhesive forms adhesive linkage again; H, PTFE composite material as liner pipe are packed into and are strengthened in the shell (or the binding agent that reinjects), and the heating pressurization is among its tight lining is in strengthening shell.Heating-up temperature is 50～200 ℃, and pressure is 0.15～25Kgf/cm
2, if stock size diameter such as Dg100 millimeter PTFE lining products, when selecting for use epoxy resin to make binding agent, optimum heating temperature is 100 ℃, pressure is 5Kgf/cm
2Rear connecting process such as i, the check of process flange form such as series of products such as pipeline, pipe fitting, tower, equipment.
Key of the present utility model is that various PTFE dispersion liquids of eliminating or fluoropolymer polymer are made cementing medium, directly set up compound welding layer, when wide uniform thickness, paving, lining PTFE film band, outer paving fabric band with simultaneously in the same way, when 50% Duplication is twined stack, the paving is the PTFE material entirely under the compound welding layer, it and PTFE inner liner are same material, are melt into the one that does not have the slit fully, thereby have overcome the defective of making on the PTFE technology that viscosity is not brought.The paving is fabric web material entirely on the compound welding layer, utilizes its good caking property, sticks into one with the enhancing shell.Be that the PTFE inner liner tightly serves as a contrast among shell by compound welding layer and tack coat, have the mechanical strength height, it is little to expand with heat and contract with cold, and creep resistance is good, and is indeformable, advantages such as anti-negative pressure.This layer of fabric inserts in the PTFE film as fish scale, so the intensity height, anti-stripping property is good.But the PTFE inner liner is more over half than general lining attenuate, and production cost descends.Manufacture method of the present invention is done some change with traditional winding method, does not need to increase technological equipment, also need not brush PTFE dispersion liquid and various fluoropolymer polymer, thereby it is simple to have technology, the advantage that productivity ratio is high.
Be described further below in conjunction with accompanying drawing.
(1) is the PTFE inner liner among Fig. 1.The PTFE film thickness can be 0.05～0.8 millimeter, preferably gets and standard fibers fabric thickness value, and as 0.08,0.1,0.17 millimeter; 5～200 millimeters of width are preferably got and standard fibers fabric width value, as 25,30,35 millimeters.(2) be compound welding layer, PTFE thin-film width, thickness are with the same in (1) in this layer, and the fabric band can be got high-temperature fibre bands such as glass fiber tape or asbestos yarn.(1) and (2) constitute PTFE composite material as liner pipe.(3) be tack coat, the fabric in the tack coat can be high band or the cloth of mechanical strength such as glass fiber tape or glass fabric, but glass fabric preferably.Binding agent in the tack coat can select epoxy resin, phenolic aldehyde-butyronitrile, the binding agent of good, the anti-200 ℃ of temperature of adhesive properties such as epoxy-nylon.(4) being to strengthen shell, can be seamless steel pipe, welded pipe, foundry goods and fiberglass etc.
Embodiment 1:
Fig. 2 is the tightly equipment barrel of lining of Dg1500 millimeter PTFE welding, 1.5～2.0 millimeters of PTFE inner liners, and tack coat elder generation coating adhesive repaves the glass fabric of state's vaginal orifice 900 millimeters, coats binding agent again, tightly serves as a contrast among steel shell.PTFE thickness is saved half than common lining method.Improve 5 times or more than conventional lining products its service life.
Embodiment 2:
Fig. 3 is a tightly lining reduced pipe of Dg100/Dg80PTFE welding, the PTFE film of 30 millimeters of thick 0.1 mm wides is wrapped on the mould, the paving is that PTFE film band, outer paving are glass fiber tapes in twining thereon again, thickness is 30 millimeters of 0.1 millimeters, width, twine with 50% Duplication simultaneously, tie up glass fiber tape more outside, through sintering, insulation, cooling, detachment, the demoulding, get the liner external diameter PTFE composite material as liner pipe littler 0.2 millimeter than internal diameter of outer cover, coat binding agent, pressurization 3Kgf/cm
2, heat 100 ℃, constant temperature half an hour, tightly serve as a contrast among foundry goods or steel part shell.
Embodiment 3:
Inside nominal diameter Dg150, long 1 meter the tightly performance test of lining straight tube of PTFE welding: (1) is detected through the high-frequency spark of 12KV, and there is not micropore in liner no-spark punch-through.(2) respectively in normal temperature, 50 ℃, 100 ℃ its anti-negative pressure performances of survey; The inside heating, when being evacuated to 760 millimetres of mercury vacuums with vavuum pump, liner does not peel off inhales flat phenomenon.(3) peel strength is made standard specimen with PTFE composite material as liner pipe, surveys respectively: (a) PTFE inner liner and compound welding layer; (b) peel strength of PTFE composite material as liner pipe and iron and steel shell, the mean value as a result of kind situation is 15Kg/cm before getting; The mean value as a result of back kind situation is 18Kg/cm; (4) tensile strength, PTFE composite material as liner pipe is made standard specimen, and to record tensile strength mean value on stretching-machine be 350kgf/cm
2(5) product is heated to 150 ℃, sharply use water cooling, be heated to 150 ℃ again, sharply cooling is carried out repeatedly again again, and the amount of expanding with heat and contract with cold is with the steel shell unanimity.
Claims (3)
1, a kind of polytetrafluoroethylene (PTFE) sealing tight liner has the PTFE liner and strengthens shell, it is characterized in that:
(a) multilayer PTFE film band forms the PTFE inner liner;
(b) outside of PTFE inner liner is more simultaneously in the same way, the Duplication stack width with 50% equates, thickness close in the compound welding layer of paving one deck PTFE film band and outer paving one deck fabric band welding formation;
(c) compound welding layer outside be directly by binding agent, or the fabric adding additives, forms adhesive linkage;
(d) outermost is to strengthen shell.
2, by the tight lining products of the described PTFE welding of claim 1, it is characterized in that the material that contacts with the PTFE inner liner is the PTFE film, the material that contacts with tack coat is a fabric, and fabric inserts in the PTFE film as fish scale.
3, by the described PTFE sealing tight liner of claim 1, it is characterized in that:
(a) the PTFE film thickness is 0.05～0.8 millimeter, is preferably 0.08,0.1,0.17 millimeter, and 5～200 millimeters of width are preferably 25,30,35 millimeters.
(b) the fabric band in the compound welding layer is glass fiber tape or abestrine cloth band high-temperature fibre band.
(c) fabric in the tack coat is high band or the cloth of mechanical strength such as glass fiber tape or glass fabric;
(d) strengthening shell is iron and steel or fiberglass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91223020 CN2097738U (en) | 1991-08-15 | 1991-08-15 | Polytetrafluoroethylene welding tight lining product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91223020 CN2097738U (en) | 1991-08-15 | 1991-08-15 | Polytetrafluoroethylene welding tight lining product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2097738U true CN2097738U (en) | 1992-03-04 |
Family
ID=4929799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91223020 Withdrawn CN2097738U (en) | 1991-08-15 | 1991-08-15 | Polytetrafluoroethylene welding tight lining product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2097738U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102126324A (en) * | 2010-11-30 | 2011-07-20 | 杭州中昊科技有限公司 | Composite plastic board, production process and glass reinforced plastic enhanced structure thereof |
| CN107811726A (en) * | 2016-09-13 | 2018-03-20 | 先健科技(深圳)有限公司 | Overlay film frame |
| WO2019088913A1 (en) * | 2017-10-31 | 2019-05-09 | Agc Asia Pacific Pte. Ltd. | Method for coating an inner surface of a pipe and the pipe having the coating |
| CN112253857A (en) * | 2020-11-20 | 2021-01-22 | 铁氟龙防腐科技(江苏)有限公司 | High-temperature-resistant and full-vacuum-resistant PTFE lining composite pipeline pipe fitting |
-
1991
- 1991-08-15 CN CN 91223020 patent/CN2097738U/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102126324A (en) * | 2010-11-30 | 2011-07-20 | 杭州中昊科技有限公司 | Composite plastic board, production process and glass reinforced plastic enhanced structure thereof |
| CN107811726A (en) * | 2016-09-13 | 2018-03-20 | 先健科技(深圳)有限公司 | Overlay film frame |
| WO2019088913A1 (en) * | 2017-10-31 | 2019-05-09 | Agc Asia Pacific Pte. Ltd. | Method for coating an inner surface of a pipe and the pipe having the coating |
| KR20200074051A (en) * | 2017-10-31 | 2020-06-24 | 에이지씨 아시아 퍼시픽 피티이. 리미티드 | Method for coating inner surface of pipe and pipe having coating |
| TWI727215B (en) * | 2017-10-31 | 2021-05-11 | 新加坡商Ａｇｃ亞太有限公司 | Method for coating an inner surface of a pipe and the pipe having the coating |
| KR102339490B1 (en) | 2017-10-31 | 2021-12-15 | 에이지씨 아시아 퍼시픽 피티이. 리미티드 | A method for coating the inner surface of a pipe and a pipe having a coating |
| CN112253857A (en) * | 2020-11-20 | 2021-01-22 | 铁氟龙防腐科技(江苏)有限公司 | High-temperature-resistant and full-vacuum-resistant PTFE lining composite pipeline pipe fitting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |