CN1064750C - Protective non-heating shrink belt for jacketed pipeline joint - Google Patents
Protective non-heating shrink belt for jacketed pipeline joint Download PDFInfo
- Publication number
- CN1064750C CN1064750C CN97112048A CN97112048A CN1064750C CN 1064750 C CN1064750 C CN 1064750C CN 97112048 A CN97112048 A CN 97112048A CN 97112048 A CN97112048 A CN 97112048A CN 1064750 C CN1064750 C CN 1064750C
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- band
- parts
- shrinking
- belt
- pipeline joint
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Abstract
The present invention relates to a shrinking band used for protecting a jacketed pipeline interface. The shrinking band is made by the following: a basal band made of modified PVC plastic is immersed into a mixed solution of ethyl acetate and alcohol, and after the basal band is expanded, the basal band is packed in a sealing mode. When used, the shrinking band is taken out, and the shrinking band automatically shrinks by the volatilization of a solvent in the shrinking band. The shrinking band is not required to be heated in installation, and no heating device or other professional tool is required on site. The operation is simple and convenient, the control is easy, and the corrosion resistant quality of the pipeline can be effectively guaranteed.
Description
The present invention is a kind of not heat shrink band that is used for jacket tube pipeline joint place protection (repaired mouth or benefit are hindered), is fit to the outer requirement for anticorrosion at straight mouthful of jacket pipeline, elbow and the special-shaped position of various calibers.
In the present domestic pipeline construction, the corrosion-resistanting interpolating port material uses shrink belt, its structure is on the heat-shrinking plastics of handling by memory, apply one deck hot melt sealing primer, during site operation, this shrink belt is coated on the repaired mouth position, its surface is heated with torch flame or other electric heater, make the primer fusion, the base material band shrinks to be finished.But the anticorrosive quality of repaired mouth is still not ideal enough, do not reach designing requirement, this be because: on the one hand opening-supplementing material is limited by specific character, and it is melting sealed to need heating to shrink, on the other hand, site operation, operating technology requires to be difficult to control, and it is very difficult heating or switching on just right, and the surface creases easily, roasting less than the position primer do not have fusion, can not finish sealing, waterproof requirement.
The purpose of this invention is to provide the opening-supplementing material of a kind of contraction bands that need not heat as the pipeline scene, it can finish the field joint construction requirement of on-the-spot pipeline easily, the sealing contractibility is finished by material itself, and anticorrosive quality is not influenced by objective condition and artificial uncontrollable factor.
The objective of the invention is to be achieved through the following technical solutions:
A kind of not heat shrink band that is used for the protection of jacket tube pipeline joint place; be characterized in: this contraction bands is formed by soak bloated base band in volatile solvent soln, and base band is by 40～90 parts of PVC, 0～45 part of DOP; 0～20 part of tribasic lead sulfate; 0～10 part of barium stearate, 0～15 part of calcium carbonate, 0～5 part of carbon black; 0～2 part of bisphenol-A; 0～25 part of epoxidized soybean oil, 0～10 part of tricresyl phosphate is formed, and volatile solvent soln is mixed by 10～90 parts ethyl acetate and 10～90 parts alcohol.
Implementation methods is as follows:
Selecting the PVC powdered plastic of a kind of physical property and chemical property excellence for use is 40-90 part as the main raw material consumption, DOP is 0-45 part as the primary plasticizer consumption, tribasic lead sulfate is 0-20 part as the main stabilizer consumption, barium stearate (or stearic acid) is 0-10 part as lubricant quantity, calcium carbonate is 0-15 part as filling the strengthening agent consumption, carbon black is 0-5 part as stabilizing agent dosage, bisgallic acid A is 0-2 part as the antiageing agent consumption, epoxidized soybean oil is 0-25 part as plasticizer consumption, carbonic acid front three phenolic ester is 0-10 part as plasticizer consumption, put into successively in the high speed dispersion kneader and mix, under 20-40 ℃, after stir about 25-50 minute, add in the extruder hopper, the temperature of each heated zones of control extruder, outlet temperature is about 160 ℃, and agent goes out moulding and makes soft banding substrate.
Above-mentioned band was put into the about 10-15 of special solvent minute, made its swelling, packing with sealing bags after taking out can be standby.This special solvent is by ethyl acetate consumption 10-90%, and alcohol consumption 10-90% mixes, and adjusts solvent burden ratio, the shrinkage size of may command contraction bands.Open during use and pack, contraction bands shrinks because of solution evaporation wherein.
Provide a specific embodiment one of the present invention below:
1. get 80 parts in PVC plastics, DOP30 part, 2 parts of tribasic lead sulfates, 2 parts of barium stearates, 10 parts in calcium carbonate, 0.1 part of carbon black, 5 parts of epoxidized soybean oils, put into the high speed dispersion kneader, below 40 ℃, in about 30 minutes adding extruder hoppers of continuous stirring, 180 ℃ of one district's temperature, 170 ℃ of two district's temperature, 160 ℃ of three district's temperature, head temperature is extruded black flexible plastic band for 165 ℃, is cut into the belt of different size as required.
2. get 70 parts in ethyl acetate, alcohol is mixed and made into solvent for 30 parts, above-mentioned belt is put into after about 30 minutes taken out, and gets final product with the polyvinyl plastics bag hermetic package.
3. during on-the-spot the use; only need special sealing primer spiral is wound into the position that needs protection; again belt is taken out from sealing bags; twine by 45 degree true dip direction spirals, scrap (bridge) width 20-40mm receives head with the primer fixing belt and gets final product; belt is met air and will inner solvent-laden volatilization be shunk automatically; about 0.5-2 hour, contraction was finished, and contraction bands and primer are coated on protected position tightly.On-the-spot without any need for heated chamber and other professional tool, simple to operation, be easy to control, guaranteed the anticorrosive quality of pipeline effectively.
4. press the contraction bands that the foregoing description is made and used, its shrinkage is 25%, mechanical property, and chemical proofing is good, with spark leak detector leak detection, no leak source.
Provide a specific embodiment two of the present invention below:
1. get 40 parts in PVC plastics, DOP8.4 part, 2 parts of tribasic lead sulfates, 0.8 part of barium stearate, 0.4 part in calcium carbonate, 0.2 part of carbon black, 0.16 part of bisphenol-A, put into the high speed dispersion kneader, in 50～100 ℃, in about 30 minutes adding extruder hoppers of continuous stirring, 185 ℃ of one district's temperature, 174 ℃ of two district's temperature, 160 ℃ of three district's temperature, head temperature is extruded black flexible plastic band for 168 ℃, is cut into the belt of different size as required.
2. get 80 parts in ethyl acetate, alcohol is mixed and made into solvent for 20 parts, above-mentioned belt is put into after about 1 hour taken out, and packs with the polyvinyl plastics band to get final product.
3. during on-the-spot the use; only need special sealing primer spiral is wound into the position that needs protection; again the Queensland belt is taken out from sealing bags; twine by 45 degree true dip direction spirals, scrap (bridge) width 20-40mm receives head with the primer fixing belt and gets final product; belt is met air and will inner solvent-laden volatilization be shunk automatically; about 2 Xiao Ming, contraction is finished, and contraction bands and primer are coated on protected position tightly.On-the-spot without any need for heated chamber and other professional tool, simple to operation, be easy to control, guaranteed the anticorrosive quality of pipeline effectively.
4. press the contraction bands that the foregoing description is made and used, its shrinkage is 20%, mechanical property, and chemical proofing is good, with spark leak detector leak detection, no leak source.
Provide a specific embodiment three of the present invention below:
1. get 90 parts in PVC plastics, DOP40 part, 17 parts of tribasic lead sulfates, 4 parts of barium stearates, 12 parts in calcium carbonate, 3 parts of carbon blacks, 20 parts of epoxidized soybean oils, 1.5 parts of bisphenol-As, 3 parts in tricresol phosphate fat, put into the high speed dispersion kneader, below 40 ℃, in about 30 minutes adding extruder hoppers of continuous stirring, 164 ℃ of one district's temperature, 182 ℃ of two district's temperature, 184 ℃ of three district's temperature, head temperature is extruded black flexible plastic band for 202 ℃, is cut into the belt of different size as required.
2. get 60 parts in ethyl acetate, alcohol is mixed and made into solvent for 40 parts, above-mentioned belt is put into after about 2 hours taken out, and packs with the polyvinyl plastics band to get final product.
3. during on-the-spot the use; only need special sealing primer spiral is wound into the position that needs protection; again belt is taken out from sealing bags; twine by 45 ℃ of true dip direction spirals, scrap (bridge) width 20-40mm, receiving head with the primer fixing belt is the brother; belt is met air and will inner solvent-laden volatilization be shunk automatically; about 0.5 hour, contraction was finished, and contraction bands and primer are coated on protected position tightly.On-the-spot without any need for heated chamber and other professional tool, simple to operation, be easy to control, guaranteed the anticorrosive quality of pipe effectively.
4. press the contraction bands that the foregoing description is made and used, its shrinkage is 45%, mechanical property, and chemical proofing is good, with spark leak detection, no leak source.
Provide a specific embodiment four of the present invention below:
1. get 60 parts in PVC plastics, DOP20 part, 10 parts of tribasic lead sulfates, 3 parts of barium stearates, put into the high speed dispersion kneader, below 40 ℃, in about 30 minutes adding extruder hoppers of continuous stirring, 170 ℃ of one district's temperature, 178 ℃ of two district's temperature, 184 ℃ of three district's temperature, the machine differential temperatures is extruded black flexible plastic band for 1952 ℃, is cut into the belt of different size as required.
2. get 70 parts in ethyl acetate, alcohol is mixed and made into solvent for 30 parts, above-mentioned belt is put into after about 1 hour taken out, and packs with the polyvinyl plastics band to get final product.
3. during on-the-spot the use; only need special sealing primer spiral is wound into the position that needs protection; again belt is taken out from sealing bags; twine by 45 degree true dip direction spirals, scrap (bridge) width 20-40mm receives head with the primer fixing belt and gets final product; belt is met air and will inner solvent-laden volatilization be shunk automatically; about 0.5 Xiao Ming, contraction is finished, and contraction bands and primer are coated on protected position tightly.On-the-spot without any need for heated chamber and other professional tool, simple to operation, be easy to control, guaranteed the anticorrosive quality of pipeline effectively.
4. press the contraction bands that the foregoing description is made and used, its shrinkage is 20%, mechanical property, and chemical proofing is good, with spark leak detector leak detection, no leak source.
Claims (1)
1. one kind is used for the not heat shrink band that jacket tube pipeline joint place protects; it is characterized in that: this contraction bands is formed by soak bloated base band in volatile solvent soln, and base band is by 40～90 parts of PVC, 0～45 part of DOP; 0～20 part of tribasic lead sulfate; 0～10 part of barium stearate, 0～15 part of calcium carbonate, 0～5 part of carbon black; 0～2 part of bisphenol-A; 0～25 part of epoxidized soybean oil, 0～10 part of tricresyl phosphate is formed, and volatile solvent soln is mixed by 10～90 parts ethyl acetate and 10～90 parts alcohol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97112048A CN1064750C (en) | 1997-05-20 | 1997-05-20 | Protective non-heating shrink belt for jacketed pipeline joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97112048A CN1064750C (en) | 1997-05-20 | 1997-05-20 | Protective non-heating shrink belt for jacketed pipeline joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1180149A CN1180149A (en) | 1998-04-29 |
| CN1064750C true CN1064750C (en) | 2001-04-18 |
Family
ID=5172051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97112048A Expired - Fee Related CN1064750C (en) | 1997-05-20 | 1997-05-20 | Protective non-heating shrink belt for jacketed pipeline joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1064750C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1304188C (en) * | 2003-09-11 | 2007-03-14 | 辽河油田金宇空缩材料公司 | Air collapsible tube |
| CN102675771B (en) * | 2012-05-10 | 2013-12-18 | 东营东港橡塑有限公司 | Preparation method for automatic-shrinkage insulation protection casing pipe |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3622583A1 (en) * | 1986-07-04 | 1988-01-07 | Rxs Schrumpftech Garnituren | Wound tape, preferably shrink tape, with fixing element |
| CN87106022A (en) * | 1987-08-27 | 1988-04-27 | 浙江省慈溪县彭桥玻纤制品厂 | Moist type glass fibre plastic-coated wrapping cloth |
| DE3732360A1 (en) * | 1987-09-25 | 1989-04-13 | Merkel Martin Gmbh Co Kg | Process for bonding a polytetrafluoroethylene element to a metal element, and a product produced by this process |
| DE3922515A1 (en) * | 1989-07-08 | 1991-01-17 | Kruse Technik Gmbh | Sea water-resistant pipe assembly for special applications - has pipes of heat-resistant plastic, esp. EPDM, with special connections for installation, esp. as steam pipes |
| EP0445445A1 (en) * | 1989-03-06 | 1991-09-11 | The Kendall Company | Novel closure device for shrinkwraps |
| EP0708290A2 (en) * | 1994-10-17 | 1996-04-24 | Lögstör Rör A/S | Shrinking sleeve |
-
1997
- 1997-05-20 CN CN97112048A patent/CN1064750C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3622583A1 (en) * | 1986-07-04 | 1988-01-07 | Rxs Schrumpftech Garnituren | Wound tape, preferably shrink tape, with fixing element |
| CN87106022A (en) * | 1987-08-27 | 1988-04-27 | 浙江省慈溪县彭桥玻纤制品厂 | Moist type glass fibre plastic-coated wrapping cloth |
| DE3732360A1 (en) * | 1987-09-25 | 1989-04-13 | Merkel Martin Gmbh Co Kg | Process for bonding a polytetrafluoroethylene element to a metal element, and a product produced by this process |
| EP0445445A1 (en) * | 1989-03-06 | 1991-09-11 | The Kendall Company | Novel closure device for shrinkwraps |
| DE3922515A1 (en) * | 1989-07-08 | 1991-01-17 | Kruse Technik Gmbh | Sea water-resistant pipe assembly for special applications - has pipes of heat-resistant plastic, esp. EPDM, with special connections for installation, esp. as steam pipes |
| EP0708290A2 (en) * | 1994-10-17 | 1996-04-24 | Lögstör Rör A/S | Shrinking sleeve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1180149A (en) | 1998-04-29 |
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