CN101446373A - Production method of composite tube lined with ultra-high molecular weight polyethylene tube - Google Patents
Production method of composite tube lined with ultra-high molecular weight polyethylene tube Download PDFInfo
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- CN101446373A CN101446373A CNA2008101631123A CN200810163112A CN101446373A CN 101446373 A CN101446373 A CN 101446373A CN A2008101631123 A CNA2008101631123 A CN A2008101631123A CN 200810163112 A CN200810163112 A CN 200810163112A CN 101446373 A CN101446373 A CN 101446373A
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Abstract
The invention discloses a production method of a composite tube lined with an ultra-high molecular weight polyethylene tube. The production method is characterized by comprising the following steps: 1. producing an outer-layer reinforced composite tube with a specified length by an extrusion molding process; and 2. inserting a preformed ultra-high molecular weight polyethylene tube into the inner wall of the outer-layer reinforced composite tube to closely fix the ultra-high molecular weight polyethylene tube with the inner wall of the outer-layer reinforced composite tube. The reinforced plastic composite tube lined with the ultra-high molecular weight polyethylene tube produced by the method combines the advantages of the ultra-high molecular weight polyethylene tube with those of the reinforced plastic composite tube, can be widely applied to the fields such as dredging of harbors and river courses, pulverized coal ash transportation of electric power plants, pulverized coal slurry transportation of coal mines, ore slurry transportation, tailings transportation, solid/liquid mixture transportation, solid substance transportation and the like.
Description
Technical field
The present invention relates to a kind of production technology of NEW TYPE OF COMPOSITE tubing, particularly a kind of production method of composite pipe of lined with ultra-high molecular weight polyethylene pipe.
Background technique
Once there was the plan of one hundred boatman's journey in former during the State's Ninth Five-Year Plan period Ministry of Water Resources and Power Industry, and plan is added 40 domestic dredgers from 100 dredgers of external import, and five big river systems of C China are carried out desilting.Simultaneously, there is very long shore line in China, and the bay desilting is bigger than the difficulty of channel cleanout, and coral reef, cobble, silt, seawater are bigger to the wearing and tearing of tubing than the silt in inland river.Be engaged in the desilting work in Bohai Sea Gulf for many years as Tianjin port office, the expense that is used to change desilting tubing (steel pipe) every year reaches up to ten million always.
Tradition sandline steel pipe and Reinforced Rubber pipe, wearing and tearing are big, cost is high, efficient is low, and optimal sediment transport tubing is ultra-high molecular weight polyethylene.Because the ultra-high molecular weight polyethylene light weight, wear-resisting, stress crack resistance performance is good especially, starch the excellent performance aspect conveying, ore pulp conveying, mine tailing conveying, solid/liquid mixture and the solid matter conveying at fly ash in electric power plant conveying, colliery fine coal, State Economic and Trade Commission once classified heavy caliber ultrahigh molecular weight polyethylene tubing manufacturing technology in 141 major projects of calendar year 2001 state key support as in addition.Because the molecular weight of ultra-high molecular weight polyethylene reaches 3-5 * 10
6, viscosity reaches 108Pa.s, and viscosity is very big under molten state, does not almost have flowability.Because critical shear rate is low, in extrusion process, be very easy to melt fracture takes place, to process very difficultly, speed of production is extremely slow, and cost of production is high; Raw material and auxiliary agent price cause pure ultra-high molecular mass polyethylene tubing to cost an arm and a leg (sale price is ten thousand yuan/ton of 3.5-4) up to more than 20,000 yuan/tons in addition, have had a strong impact on its application and marketing.
Summary of the invention
The objective of the invention is to overcome the prior art defective, provide a kind of and can produce the composite pipe that cheap, life-span is long, have the advantage lined with polyethylene pipe of superhigh molecular weight polyethylene pipe and reinforced plastic composite pipe when having high wear resistance.
In order to realize above purpose, the present invention is by the following technical solutions: a kind of production method of composite pipe of lined with ultra-high molecular weight polyethylene pipe, it is characterized in that: this method comprises following step: 1. utilize extruding-out process, produce the outer reinforced composite tubing of specific length.2. the superhigh molecular weight polyethylene pipe with moulding in advance inserts outer reinforced composite pipe material inner wall, and superhigh molecular weight polyethylene pipe and outer reinforced composite pipe material inner wall are close to fixing.
Beneficial effect of the present invention is: utilize the composite pipe of the lined with ultra-high molecular weight polyethylene pipe that the present invention produces to increase under the little prerequisite at cost, it is cheap, the life-span is long, have high wear resistance, has the advantage of superhigh molecular weight polyethylene pipe and reinforced plastic composite pipe simultaneously again.
Below in conjunction with accompanying drawing the present invention is described in further detail
Description of drawings
Fig. 1 is a process flow diagram of the present invention;
Fig. 2 is the pipe structure schematic representation of being produced by the present invention;
Embodiment
As shown in Figure 1, a kind of production method of composite pipe of lined with ultra-high molecular weight polyethylene pipe is characterized in that: this method comprises following step: 1. utilize extruding-out process, produce the outer reinforced composite tubing of specific length.2. the superhigh molecular weight polyethylene pipe with moulding in advance inserts outer reinforced composite pipe material inner wall, and superhigh molecular weight polyethylene pipe and outer reinforced composite pipe material inner wall are close to fixing.
Superhigh molecular weight polyethylene pipe 1 can also can form by being rolled by superhigh molecular weight polyethylene pipe sheet material by the extruding and moulding once-through.The high molecular weight polyethylene board material that rolls is a profile shapes, and in the process of rolling, its limit can be meshing with each other.
As a kind of improvement mode of execution of the present invention, superhigh molecular weight polyethylene pipe 1 is before inserting outer reinforced composite pipe material inner wall, through inserting outer reinforced composite pipe material inner wall again after the operations such as undergauge, surface plasma processing, surperficial spraying binder.Superhigh molecular weight polyethylene pipe 1 is by the size reducing machine undergauge, so that be inserted in the reinforced plastic composite pipe.After superhigh molecular weight polyethylene pipe 1 lining is gone into the reinforced plastic composite pipe, utilize high molecular memory effect and elastic recovery function, superhigh molecular weight polyethylene pipe 1 caliber will progressively be replied, and form interference fit with reinforced plastic composite pipe inwall, and both are in conjunction with tight.The effect that superhigh molecular weight polyethylene pipe 1 surface plasma is handled mainly is that superhigh molecular weight polyethylene pipe 1 outer surface is carried out activation processing, make its surface polarityization, secondly the adhesive strength of increase and reinforced plastic composite pipe inwall is greasy dirt and the dirt of removing superhigh molecular weight polyethylene pipe 1 outer wall.
Outer reinforced composite tubing of the present invention can be made three layers, and outermost surface and innermost layer are thermoplastic plastic layer 2,4, and the mesosphere is a layers of reinforcement 3.The tackiness agent of spraying usefulness is to select according to the characteristic of outer reinforced composite tubing innermost layer thermoplastic material layer and ultra-high molecular weight polyethylene.
The superhigh molecular weight polyethylene pipe 1 of extruding and moulding or the molecular weight of high molecular weight polyethylene board material be 2,000,000 to 5,000,000, to keep the characteristics such as wear-resisting of ultra-high molecular weight polyethylene brilliance.The superhigh molecular weight polyethylene pipe 1 or the high molecular weight polyethylene board material optimum wall thickness that go out moulding are 4～12mm.
Utilize the reinforced plastics of the lined with ultra-high molecular weight polyethylene pipe 1 that the present invention produces Composite pipe combines the advantage of superhigh molecular weight polyethylene pipe 1 and reinforced plastic pipe material. Have that coefficient of friction is little, abrasion are low, chemical proofing is good, shock-resistant, resistance to pressure, anti-Freezing property, heat insulating ability, self lubricity, ant-scaling, stress cracking resistance, sanitation performance be good, Connect reliable, energy-saving and cost-reducing, environmental protection, meet the spies such as national industrial policies, high performance-price ratio The point. Desilting, the fly ash in electric power plant that can be widely used in harbour, river course carried, colliery fine coal slurry The fields such as conveying, pulp conveying, mine tailing conveying, solid/liquid mixture and solid matter conveying, It is the splendid patent of invention of a kind of economic benefit and social benefit.
Claims (8)
1, a kind of production method of composite pipe of lined with ultra-high molecular weight polyethylene pipe is characterized in that: this method comprises following step:
1. utilize extruding-out process, produce the outer reinforced composite tubing of specific length.
2. the superhigh molecular weight polyethylene pipe with moulding in advance inserts outer reinforced composite pipe material inner wall, and superhigh molecular weight polyethylene pipe and outer reinforced composite pipe material inner wall are close to fixing.
2, the production method of the composite pipe of lined with polyethylene pipe according to claim 1 is characterized in that: small-bore superhigh molecular weight polyethylene pipe adopts extruding-out process production.
3, the production method of the composite pipe of lined with ultra-high molecular weight polyethylene pipe according to claim 1 is characterized in that: bigbore superhigh molecular weight polyethylene pipe is rolled by high molecular weight polyethylene board material and forms.
4, the production method of the composite pipe of lined with polyethylene pipe according to claim 1 is characterized in that: insert outer reinforced composite pipe material inner wall after the operations such as superhigh molecular weight polyethylene pipe process undergauge, surface plasma processing, surperficial spraying binder.
5, according to the production method of the composite pipe of claim 2 or 3 described lined with polyethylene pipes, it is characterized in that: superhigh molecular weight polyethylene pipe through operations such as undergauge, surface plasma processings, surperficial spraying binders after the outer reinforced composite pipe material inner wall of insertion.
6, according to the production method of the composite pipe of claim 2 or 3 described lined with ultra-high molecular weight polyethylene pipes, it is characterized in that: the superhigh molecular weight polyethylene pipe of liner exposes the outer two ends of outer reinforced composite tubing to be handled through crimping.
7, the production method of the composite pipe of lined with polyethylene pipe according to claim 4 is characterized in that: the superhigh molecular weight polyethylene pipe of liner exposes the outer two ends of outer reinforced composite tubing to be handled through crimping.
8, the production method of the composite pipe of lined with ultra-high molecular weight polyethylene pipe according to claim 2 is characterized in that: described superhigh molecular weight polyethylene pipe wall thickness is 4～12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101631123A CN101446373A (en) | 2008-12-12 | 2008-12-12 | Production method of composite tube lined with ultra-high molecular weight polyethylene tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101631123A CN101446373A (en) | 2008-12-12 | 2008-12-12 | Production method of composite tube lined with ultra-high molecular weight polyethylene tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101446373A true CN101446373A (en) | 2009-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2008101631123A Pending CN101446373A (en) | 2008-12-12 | 2008-12-12 | Production method of composite tube lined with ultra-high molecular weight polyethylene tube |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103240881A (en) * | 2013-04-24 | 2013-08-14 | 扬州金鑫管业有限公司 | Preparation method of ultrahigh molecular weight polyethylene composite tube compactly lined with glass fiber reinforced plastic |
| CN103600503A (en) * | 2013-10-22 | 2014-02-26 | 王庆昭 | Production method and production system of ultrahigh molecular weight polyethylene compound oil pipe |
| CN104534193A (en) * | 2015-01-09 | 2015-04-22 | 大庆高新区法尔文得新材料有限公司 | Ultrahigh molecular weight polyethylene lining composite pipe production method and device |
| CN113414974A (en) * | 2021-06-25 | 2021-09-21 | 临海伟星新型建材有限公司 | Device and method for compounding complete bonding type reinforced composite pipe |
-
2008
- 2008-12-12 CN CNA2008101631123A patent/CN101446373A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103240881A (en) * | 2013-04-24 | 2013-08-14 | 扬州金鑫管业有限公司 | Preparation method of ultrahigh molecular weight polyethylene composite tube compactly lined with glass fiber reinforced plastic |
| CN103600503A (en) * | 2013-10-22 | 2014-02-26 | 王庆昭 | Production method and production system of ultrahigh molecular weight polyethylene compound oil pipe |
| CN103600503B (en) * | 2013-10-22 | 2016-03-30 | 王庆昭 | Ultrahigh molecular weight polyethylene compound oil pipe production method |
| CN104534193A (en) * | 2015-01-09 | 2015-04-22 | 大庆高新区法尔文得新材料有限公司 | Ultrahigh molecular weight polyethylene lining composite pipe production method and device |
| CN113414974A (en) * | 2021-06-25 | 2021-09-21 | 临海伟星新型建材有限公司 | Device and method for compounding complete bonding type reinforced composite pipe |
| WO2022267074A1 (en) * | 2021-06-25 | 2022-12-29 | 临海伟星新型建材有限公司 | Device and method for compounding reinforced composite pipe of completely bonded type |
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Open date: 20090603 |