CN1760016A - Method for adhesive bonding foam jacket tube of steel conduit - Google Patents
Method for adhesive bonding foam jacket tube of steel conduit Download PDFInfo
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- CN1760016A CN1760016A CN 200510044583 CN200510044583A CN1760016A CN 1760016 A CN1760016 A CN 1760016A CN 200510044583 CN200510044583 CN 200510044583 CN 200510044583 A CN200510044583 A CN 200510044583A CN 1760016 A CN1760016 A CN 1760016A
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- jacket tube
- jacket
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- tube layer
- tube
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Abstract
A method for adhering a jacket pipe onto an insulating polyurethane foam layer of steel pipeline includes such steps as preparing jacket pipe, applying high voltage to the corona rings on the inner surface of jacket pipe, moving the corona rings along the inner surface of jacket pipe for polarizing it, and coating polar material on said inner surface to form an adhesive layer.
Description
(1) technical field
The present invention relates to the new adhering method between polyurethane foam that is incubated outside a kind of steel conduit and the jacket of the protecting this layer usefulness, belong to the corrosion-resistant thermal insulation technology of steel pipe, is a kind of method for adhesive bonding foam jacket tube of steel conduit specifically.
(2) background technology
Pipeline is when adopting polyurethane foam and polyethylene jacket to make the corrosion-resistant thermal insulation tube-in-tube, because not bonding between the jacket of the polyurethane foam of insulation usefulness and this heat-insulation layer of protection, the protective layer jacket that foam heat-insulation layer and its outside are coated forms two-layer skin.When particularly adopting " two-step method " technology that steel pipe is carried out corrosion-resistant thermal insulation; need earlier the protective layer jacket with the prefabricated jacket tube layer of extruding of extruder; again the jacket tube layer is enclosed within on the steel pipe and also will supports out homogeneous space between steel pipe and the jacket tube layer with the rest pad frame; in the middle of being poured in polyurethane foam again, forming in the foam jacket tube of steel conduit and manage.Because jacket tube layer material polyethylene is nonpolarity material, not bonding with foam heat-insulation layer, the two-layer skin of formation makes the making of tube-in-tube can not form three (steel pipe, froth bed, clipping layer) one.In order to strengthen steel pipe, foam, the Trinitarian intensity of jacket, adopt reinforcement jacket layer thickness to solve usually.Shortcoming is the cost of manufacture that has increased tube-in-tube; also make and form displacement between the tube-in-tube; in case protective layer jacket breakage; the tube-in-tube that is embedded in underground use is easily intake; influence the insulation and the anticorrosive quality of tube-in-tube; the displacement destructible pipeline that particularly expands with heat and contract with cold connects repaired mouth, causes the repaired mouth water inlet, has reduced tube-in-tube corrosion-resistant thermal insulation effect.Present in order to solve the bonding problem of foam heat-insulation layer and clipping layer, the method for the employing preliminary treatment electric polarization jacket tube internal layer that has, the shortcoming of this method is: need bigger polarization intensity, and big polarizer apparatus complex process; Jacket internal layer after the polarization can not carry out tube-in-tube immediately to be made, the roping resting period is long, jacket inner surface that has polarized and airborne cation or anion in conjunction with neutralization after, formed nonpolarity state again, be that this polarization has the inefficacy effect, when air humidity is big, can only deposit less than 1 hour usually.The short like this time makes tube-in-tube and is difficult to make, so, the thickening clipping layers that adopt come the intensity in the pipe making in the reinforced pipe more in the tube-in-tube making at present, this method has increased the cost that tube-in-tube is made greatly, and fundamentally can't resolve bonding between foam heat-insulation layer and the jacket internal face.
(3) summary of the invention
The present invention seeks in order to overcome the shortcoming in the above-mentioned technology, a kind of method for adhesive bonding foam jacket tube of steel conduit is proposed, the polarization of jacket tube internal layer can forever be kept, when making insulating tube, bond together closely with the foam heat-insulation layer that has polarity, to realize firm bonding of foam heat-insulation layer and jacket heat-insulation layer.
The object of the invention is realized by following technical scheme: this method for adhesive bonding foam jacket tube of steel conduit, and the material polyethylene material that will make the jacket tube layer earlier is placed in the extruder, makes by annular head and extrudes needed jacket tube layer 1, it is characterized in that:
(1) on the mobile corona ring electrode 3 that the high voltage direct current generator 5 mobile corona ring 4 that send electricity to give to be installed in jacket tube layer 1 inner surface side of extruding links to each other, in time to the processing that polarizes of jacket tube layer inner surface, it is to finish in the manufacturing process of jacket tube layer that this polarization is handled, perhaps in completing back 1 hour, the jacket tube layer carries out
(2) the application polar material at any time of the jacket tube layer inner surface after the sided corona treatment, formation has the material of polarity and the binder course 2 of jacket, when making tube-in-tube, the permanent polarity that has of this binder course, and can bond together with the foam heat-insulation layer of the tube-in-tube of making any time.
The polar material of the jacket tube layer inner surface application after the sided corona treatment is a polyurethane foam bi-component compound, or many second cyanate combination agent, or polarity coating, or other have the polar material of adhesive property.
Handling when polarization is when finishing in the manufacturing process of jacket tube layer, corona ring can be installed on the mould that the jacket tube layer extrudes.Handling when polarization is when carrying out after the jacket tube layer completes, and corona ring can be installed on the adjustable shelf of supporting jacket tube layer inner surface.
Moving of corona ring 4 is to be moved by the corona ring carriage release lever 8 that people's pulling is connected with corona ring, and perhaps the mould of extruding along with the jacket tube layer of corona ring installation moves together, perhaps driven by other motor drive mechanism and moves.
The present invention makes the jacket tube layer inner surface permanent method that polarizes, adopt the simple polarizer apparatus of low-intensity, jacket tube layer inner surface polarized handle and adopt polar material at any time the jacket tube layer inner surface that has polarized to be carried out application (molecule neutralization), make the cation of the molecule of jacket tube layer inner surface polarized charged and polar material or anion in conjunction with after, its molecular structure links together closely, it is stable to form one deck, the jacket tube layer inner surface that has polarity that can not lose efficacy, can bond together closely with the foam heat-insulation layer that has polarity, form foam heat-insulation layer and jacket tube layer inner surface bonding becoming one truly.
The polar material of jacket tube layer inner surface is coated with mounted head 6 by the annular that is installed in application ring 7 peripheries in the jacket tube layer and is coated with after jacket tube layer sided corona treatment and is contained in jacket tube layer inner surface.The polar material that application is used in the inner chamber of application ring 7 is come by carrying through punishment in advance pump 9 in the polar material storage tank 11, has connecting axle 10 to be connected between utmost point shape material storage tank and the material pump, expects that pump is by motor 12 drives.
The equipment that advantage of the present invention is to use is simple, easy to operate, the polarization of jacket tube internal layer can forever be kept, can can not bond together closely with the foam heat-insulation layer that has polarity, to realize firm bonding of foam heat-insulation layer and jacket tube internal layer along with the prolongation of time was lost efficacy.The method can be used in the product of all flat shapes that polyethylene banding pattern board making becomes to have polarity.
(4) description of drawings
Fig. 1 is the apparatus sketch that a kind of method for adhesive bonding foam jacket tube of steel conduit uses,
(5) specific embodiment
The material polyethylene material that to make the jacket tube layer earlier is placed in the extruder, extrude needed jacket tube layer 1 by annular head making, send the 10-60KV high-tension electricity on the mobile corona ring electrode 3 on the mobile corona ring 4 that is installed in jacket tube layer 1 inner surface side of extruding by the high voltage direct current generator 5 of 10-60KV, and immediately to the processing that polarizes of jacket tube layer inner surface, (it is to finish in the manufacturing process of jacket tube layer that this polarization is handled, perhaps in the jacket tube layer completed back 1 hour, carry out can) jacket tube layer inner surface after corona polarizing is handled be coated with mounted head 6 application polar material at any time by application ring 7, form to have the material of polarity and the binder course 2 of jacket.Application ring connecting rod 8 can be manual, also can be driven by other motor machine and move.The polar material that application is used in the inner chamber of application ring 7 is come by carrying through punishment in advance pump 9 in the polar material storage tank 11, has connecting axle 10 to be connected between polar material storage tank and the material pump, expects that pump is by motor 12 drives.
When making tube-in-tube, this binder course 2 permanent polarity that have, and can bond together with the foam heat-insulation layer of the tube-in-tube of making any time.
The polar material of the jacket tube layer inner surface application after the sided corona treatment is a polyurethane foam bi-component compound, or many second cyanate combination agent, or other polarity adhesives.
Claims (5)
1, a kind of method for adhesive bonding foam jacket tube of steel conduit, the material polyethylene material that will make the jacket tube layer earlier is placed in the extruder, makes by annular head and extrudes needed jacket tube layer (1), it is characterized in that:
(1) high voltage direct current generator (5) send the mobile corona ring electrode (3) that electricity links to each other to the mobile corona ring (4) that is installed in jacket tube layer (1) inner surface side of extruding, immediately to the processing that polarizes of jacket tube layer inner surface, it is to finish in the manufacturing process of jacket tube layer that this polarization is handled, perhaps in completing back 1 hour, the jacket tube layer carries out
(2) the application polar material at any time of the jacket tube layer inner surface after the sided corona treatment, formation has the material of polarity and the binder course of jacket (2), when making tube-in-tube, the permanent polarity that has of this binder course, and can bond together with the foam heat-insulation layer of the tube-in-tube of making any time.
2, according to the described method for adhesive bonding foam jacket tube of steel conduit of claim 1, the polar material that it is characterized in that the jacket tube layer inner surface application after the sided corona treatment is a polyurethane foam bi-component compound, or many second cyanate combination agent, or polarity coating, or has the polar material of adhesive property.
3, according to the described method for adhesive bonding foam jacket tube of steel conduit of claim 1, it is characterized in that moving of corona ring (4), be to move by the corona ring carriage release lever (8) that people's pulling is connected with corona ring, perhaps the mould of extruding along with the jacket tube layer of corona ring carriage release lever installation moves together, is perhaps driven by motor drive mechanism and moves.
4, according to the described method for adhesive bonding foam jacket tube of steel conduit of claim 1, the polar material that it is characterized in that jacket tube layer inner surface is coated with mounted head (6) application after sided corona treatment by what be installed in application ring (7) periphery in the jacket tube layer.
5,, it is characterized in that the inventive method can be used in the product of flat shape that polyethylene banding pattern board making becomes to have polarity according to the described method for adhesive bonding foam jacket tube of steel conduit of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510044583 CN1760016A (en) | 2005-09-13 | 2005-09-13 | Method for adhesive bonding foam jacket tube of steel conduit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510044583 CN1760016A (en) | 2005-09-13 | 2005-09-13 | Method for adhesive bonding foam jacket tube of steel conduit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1760016A true CN1760016A (en) | 2006-04-19 |
Family
ID=36706288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510044583 Pending CN1760016A (en) | 2005-09-13 | 2005-09-13 | Method for adhesive bonding foam jacket tube of steel conduit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1760016A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103203865A (en) * | 2013-04-12 | 2013-07-17 | 厦门厦迪亚斯环保过滤技术有限公司 | Method for producing polypropylene filter screen joint |
| CN106738590A (en) * | 2016-12-16 | 2017-05-31 | 浙江海峰制鞋设备有限公司 | A kind of pouring head overcoat for PU materials |
-
2005
- 2005-09-13 CN CN 200510044583 patent/CN1760016A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103203865A (en) * | 2013-04-12 | 2013-07-17 | 厦门厦迪亚斯环保过滤技术有限公司 | Method for producing polypropylene filter screen joint |
| CN106738590A (en) * | 2016-12-16 | 2017-05-31 | 浙江海峰制鞋设备有限公司 | A kind of pouring head overcoat for PU materials |
| CN106738590B (en) * | 2016-12-16 | 2023-01-17 | 浙江海峰自动化设备有限公司 | Casting head jacket for PU material |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |