CN103672197B - Multi-layer co-extruded mining conveying pipe of ultra-high molecular weight polyethylene and preparation method thereof - Google Patents
Multi-layer co-extruded mining conveying pipe of ultra-high molecular weight polyethylene and preparation method thereof Download PDFInfo
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- CN103672197B CN103672197B CN201310719076.5A CN201310719076A CN103672197B CN 103672197 B CN103672197 B CN 103672197B CN 201310719076 A CN201310719076 A CN 201310719076A CN 103672197 B CN103672197 B CN 103672197B
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- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 title claims abstract description 51
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 title claims abstract description 51
- 238000005065 mining Methods 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 150000004767 nitrides Chemical class 0.000 claims abstract description 37
- 229920000642 polymer Polymers 0.000 claims abstract description 29
- 239000000945 filler Substances 0.000 claims abstract description 23
- 229920001002 functional polymer Polymers 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000001125 extrusion Methods 0.000 claims abstract description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 6
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 239000006229 carbon black Substances 0.000 claims description 3
- 239000003063 flame retardant Substances 0.000 claims description 3
- 229920001684 low density polyethylene Polymers 0.000 claims description 3
- 239000004702 low-density polyethylene Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 5
- 230000032683 aging Effects 0.000 abstract description 4
- 230000035939 shock Effects 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 76
- 229920001903 high density polyethylene Polymers 0.000 description 6
- 239000004700 high-density polyethylene Substances 0.000 description 6
- 238000009413 insulation Methods 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000007569 slipcasting Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
- 150000003673 urethanes Chemical class 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/12—Rigid pipes of plastics with or without reinforcement
- F16L9/121—Rigid pipes of plastics with or without reinforcement with three layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/06—Hoses, i.e. flexible pipes made of rubber or flexible plastics with homogeneous wall
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/12—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of multi-layer co-extruded mining conveying pipe of ultra-high molecular weight polyethylene and preparation method thereof, including ultra-high molecular weight polyethylene internal layer, it is externally provided with modified poly nitride layer at ultra-high molecular weight polyethylene internal layer, is externally provided with functional polymer outer layer in modified poly nitride layer; Wherein the material of modified poly nitride layer is through adding filler modified polymer, and the mass ratio of filler and polymer is 5:95～40:60. The present invention adopts the mining conveying pipe that co-extrusion process prepares, and ectonexine is ultra-high molecular weight polyethylene, and it has superpower wearability, self lubricity, the performances such as strength ratio is higher, stable chemical nature, ageing resistace are strong; Intermediate layer adopts filler modified polymeric material; Outer layer adopts polymeric material so that it has the performance that antistatic, intensity height, shock resistance etc. are excellent. For this, the present inventor has drawn this experimental program by substantial amounts of experimental demonstration. By to ultra-high molecular weight polyethylene, filler, polymer content control the combination property of goods, by the optimization to process conditions, obtain performance preferably mining conveying pipe.
Description
Technical field
The present invention relates to polymer science field, especially a kind of multi-layer co-extruded mining conveying pipe of ultra-high molecular weight polyethylene and preparation method thereof.
Background technology
Mining conveying pipe refers to the conveyance conduit such as water supply and sewage, ventilation, slip casting, gas-removing in mine. In the sixties, abroad once adopted hard PVC as the pipeline of conveying, but due to poor performance at low temperatures, broken, wearability was not good. After the seventies, progressively managed replaced by HDPE, due to HDPE pipe have corrosion-resistant, low-temperature flexibility good, use temperature reach less than-40 DEG C, creep-resistant property is good, long service life, thus being widely used.
Multi-layer co-extruded is extrude different melted streams on multiple stage extruder respectively, converges coextrusion and obtain the course of processing of multilayer composite product in a compound die head. The material stream with different performance is combined with each other in extrusion, makes goods have the good characteristic of several different materials concurrently. Goods can carry out complementation in nature, has the material of special performance and outward appearance thus obtaining, such as oxygen and damp proof obstructing capacity, coloring, heat insulating ability, thermoforming and heat bonding ability, and the mechanical performance such as intensity, rigidity, hardness. These have the multilayer materials of combination property in a lot of fields in have and be extremely widely applied value. Therefore, coextrusion technology is widely used in the production of laminated film, sheet material, tubing and electric wire.
Ultra-high molecular weight polyethylene is a kind of macromolecular material, and it is more stable that it has high wearability, self lubricity, chemical property, the feature such as strength ratio is higher, low temperature resistant, aging resistance.Ultra-high molecular weight polyethylene has high impact resistance, adopt multi-layer co-extruded prepare mining conveying pipe, can effectively prevent ectonexine creep, add its to shock resistance, pressure, bending ability, add its ability to bear. Adopt superhigh molecular weight polyethylene material to prepare mining conveying pipe not to be afraid of and collide with, will not break, be particularly well-suited to the mine conveying equipment of some bad environments.
China Patent Publication No. CN200972014, discloses " mining conveying tubing " on November 7th, 2007. The method relates to body, is covered with reflective pad pasting on body, and reflective pad pasting is axial arranged along body, along body circumference have one or one or more. This tubing is used for the water supply and sewage of mine, ventilation, slip casting, drawing-off gas. Easily distinguish staggered pipeline, make shaft production more orderly, raise the management level.
China Patent Publication No. CN203010031U, discloses " polyurethane foam corrosion-resistant thermal insulation fluid-transporting tubing " on June 19th, 2013. The inner surface of this urethane foaming corrosion-resistant thermal insulation fluid-transporting tubing body arranges permeable formation, and outer surface arranges anticorrosive coat, arranges heat-insulation layer outside anticorrosive coat, arranges overcoat outside heat-insulation layer. This design anticorrosive coat, RPUF heat-insulation layer and high density polyethylene (HDPE) overcoat and body are combined closely, good integrity, make pipeline have the performances such as good resistance to compression, anti-corrosion and waterproof and insulation, greatly extend the service life of pipeline.
China Patent Publication No. CN102287588A, discloses " environment-friendly type flexibility drag reduction two-layer compound ore pulp delivery duct and preparation method thereof " on the 21st in December in 2012. This environment-friendly type flexibility drag reduction two-layer compound ore pulp delivery duct, is provided with adhesive layer at inner-walls of duct, is fat deposit outside adhesive layer, be epidermal area outside fat deposit, and pipeline is metal tube, and pipe thickness is 1～50mm. The excellent combination properties such as this invention product is wear-resisting, corrosion-resistant, shock-resistant. It it is a kind of novel environment-friendly type flexibility drag reduction two-layer compound ore pulp delivery duct.
Mining conveying pipe prepared by above patented technology, has certain defect in combination property, and runs in installation process relatively heavy, and price comparison is expensive.
Summary of the invention
It is an object of the invention to: provide a kind of ultra-high molecular weight polyethylene multi-layer co-extruded mining conveying pipe, its rub resistance, cost are low, antistatic, product acid and alkali-resistance, long service life, can as conveyance conduits such as draining in mine, ventilation, slip casting, gas-removings, high comprehensive performance, is suitable for large-scale production.
The present invention is achieved in that the multi-layer co-extruded mining conveying pipe of ultra-high molecular weight polyethylene, including ultra-high molecular weight polyethylene internal layer, is externally provided with modified poly nitride layer at ultra-high molecular weight polyethylene internal layer, is externally provided with functional polymer outer layer in modified poly nitride layer; Wherein the material of modified poly nitride layer is through adding filler modified polymer, and the mass ratio of filler and polymer is 5:95～40:60.
The polymer of the described polymer in modified poly nitride layer and functional polymer outer layer is UHMWPE, HDPE, LLDPE, LDPE, PP, PVC, PA one of which or several combination in any; Filler in modified poly nitride layer is carbon fiber, white carbon black, calcium carbonate, antistatic additive, fire retardant, calcium sulfate one of which or several combination in any.
The thickness of ultra-high molecular weight polyethylene internal layer is 0.1～5mm, and the thickness of modified poly nitride layer is 5～50mm, and the thickness of functional polymer outer layer is 5～20mm.The wearability of mining conveying pipe, ageing resistance, impact resistance and product price is controlled by changing the thickness of each layer and outer layer and ectonexine type of polymer.
The preparation method of the multi-layer co-extruded mining conveying pipe of ultra-high molecular weight polyethylene, adopts multi-layer co-extruded processing mode by ultra-high molecular weight polyethylene, polymer-modified and functional polymer, produces and obtains the multi-layer co-extruded mining conveying pipe of ultra-high molecular weight polyethylene.
The extruder extrusion parameter of ultra-high molecular weight polyethylene internal layer is: extruding each section of temperature is: 200 DEG C of a district, 220 DEG C of 2nd district, 230 DEG C of 3rd district, 240 DEG C of 4th district, 250 DEG C of 5th district, 250 DEG C of 6th district; Engine speed is 300r/min.
Owing to have employed above-mentioned technical scheme, the present invention adopts the mining conveying pipe that co-extrusion process is prepared, ectonexine is ultra-high molecular weight polyethylene, and it has superpower wearability, self lubricity, the performances such as strength ratio is higher, stable chemical nature, ageing resistace are strong; Intermediate layer adopts filler modified polymeric material; Outer layer adopts polymeric material so that it has the performance that antistatic, intensity height, shock resistance etc. are excellent. For this, the present inventor has drawn this experimental program by substantial amounts of experimental demonstration. By to ultra-high molecular weight polyethylene, filler, polymer content control the combination property of goods, by the optimization to process conditions, obtain performance preferably mining conveying pipe, adopt that ultra-high molecular weight polyethylene is multi-layer co-extruded to be prepared mining conveying pipe and have unrivaled advantage in performance and price. The preparation method of the present invention is simpler and easy, and combination property is better, has certain market competitiveness.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of the present invention.
Detailed description of the invention
Embodiments of the invention 1: the multi-layer co-extruded mining conveying pipe of ultra-high molecular weight polyethylene, including ultra-high molecular weight polyethylene internal layer 1, are externally provided with modified poly nitride layer 2 at ultra-high molecular weight polyethylene internal layer 1, are externally provided with functional polymer outer layer 3 in modified poly nitride layer 2; The thickness of ultra-high molecular weight polyethylene internal layer 1 is 2mm, and the thickness of modified poly nitride layer 2 is 20mm, and the thickness of functional polymer outer layer 3 is 10mm. Wherein the material of modified poly nitride layer 2 is through adding filler modified polymer, and the mass ratio of filler and polymer is 20:70; The polymer of the described polymer in modified poly nitride layer 2 and functional polymer outer layer 3 is HDPE; Filler in modified poly nitride layer 2 is carbon fiber.
The preparation method of the multi-layer co-extruded mining conveying pipe of ultra-high molecular weight polyethylene, adopts multi-layer co-extruded processing mode by ultra-high molecular weight polyethylene, polymer-modified and functional polymer, produces and obtains the multi-layer co-extruded mining conveying pipe of ultra-high molecular weight polyethylene. Ultra-high molecular weight polyethylene internal layer 1 extruder extrusion parameter is: extruding each section of temperature is: 200 DEG C of a district, 220 DEG C of 2nd district, 230 DEG C of 3rd district, 240 DEG C of 4th district, 250 DEG C of 5th district, 250 DEG C of 6th district; Engine speed is 300r/min.
Embodiments of the invention 2: the multi-layer co-extruded mining conveying pipe of ultra-high molecular weight polyethylene, including ultra-high molecular weight polyethylene internal layer 1, are externally provided with modified poly nitride layer 2 at ultra-high molecular weight polyethylene internal layer 1, are externally provided with functional polymer outer layer 3 in modified poly nitride layer 2; The thickness of ultra-high molecular weight polyethylene internal layer 1 is 0.1mm, and the thickness of modified poly nitride layer 2 is 5mm, and the thickness of functional polymer outer layer 3 is 5mm; Wherein the material of modified poly nitride layer 2 is through adding filler modified polymer, and the mass ratio of filler and polymer is 5:95;UHMWPE and the PP that polymer is equivalent of the described polymer in modified poly nitride layer 2 and functional polymer outer layer 3; Filler in modified poly nitride layer 2 is white carbon black, antistatic additive and fire retardant.
Preparation method is with embodiment 1.
Embodiments of the invention 3: the multi-layer co-extruded mining conveying pipe of ultra-high molecular weight polyethylene, including ultra-high molecular weight polyethylene internal layer 1, are externally provided with modified poly nitride layer 2 at ultra-high molecular weight polyethylene internal layer 1, are externally provided with functional polymer outer layer 3 in modified poly nitride layer 2; The thickness of ultra-high molecular weight polyethylene internal layer 1 is 5mm, and the thickness of modified poly nitride layer 2 is 50mm, and the thickness of functional polymer outer layer 3 is 20mm; Wherein the material of modified poly nitride layer 2 is through adding filler modified polymer, and the mass ratio of filler and polymer is 40:60; LDPE and the PVC that polymer is equivalent of the described polymer in modified poly nitride layer 2 and functional polymer outer layer 3; Filler in modified poly nitride layer 2 is calcium carbonate and calcium sulfate.
Preparation method is with embodiment 1.
Claims (4)
1. the multi-layer co-extruded mining conveying pipe of ultra-high molecular weight polyethylene, including ultra-high molecular weight polyethylene internal layer (1), it is characterized in that: be externally provided with modified poly nitride layer (2) at ultra-high molecular weight polyethylene internal layer (1), be externally provided with functional polymer outer layer (3) in modified poly nitride layer (2); Wherein the material of modified poly nitride layer (2) is through adding filler modified polymer; The polymer of the polymer in modified poly nitride layer (2) and functional polymer outer layer (3) is all UHMWPE and the PP of equivalent, filler in modified poly nitride layer (2) is that white carbon black, antistatic additive and fire retardant are modified, and in modified poly nitride layer (2), filler is 5:95 with the mass ratio of polymer; Or the polymer of the polymer in modified poly nitride layer (2) and functional polymer outer layer (3) is all LDPE and the PVC of equivalent, filler in modified poly nitride layer (2) is calcium carbonate and calcium sulfate, and in modified poly nitride layer (2), filler is 40:60 with the mass ratio of polymer.
2. the multi-layer co-extruded mining conveying pipe of ultra-high molecular weight polyethylene according to claim 1, it is characterized in that: the thickness of ultra-high molecular weight polyethylene internal layer (1) is 0.1～5mm, the thickness of modified poly nitride layer (2) is 5～50mm, and the thickness of functional polymer outer layer (3) is 5～20mm.
3. the preparation method of the multi-layer co-extruded mining conveying pipe of ultra-high molecular weight polyethylene as claimed in claim 1, it is characterized in that: ultra-high molecular weight polyethylene, polymer-modified and functional polymer are adopted multi-layer co-extruded processing mode, produce and obtain the multi-layer co-extruded mining conveying pipe of ultra-high molecular weight polyethylene.
4. the preparation method of the multi-layer co-extruded mining conveying pipe of ultra-high molecular weight polyethylene according to claim 3, it is characterised in that: ultra-high molecular weight polyethylene internal layer (1) extruder extrusion parameter is: extruding each section of temperature is: 200 DEG C of a district, 220 DEG C of 2nd district, 230 DEG C of 3rd district, 240 DEG C of 4th district, 250 DEG C of 5th district, 250 DEG C of 6th district; Engine speed is 300r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310719076.5A CN103672197B (en) | 2013-12-24 | 2013-12-24 | Multi-layer co-extruded mining conveying pipe of ultra-high molecular weight polyethylene and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310719076.5A CN103672197B (en) | 2013-12-24 | 2013-12-24 | Multi-layer co-extruded mining conveying pipe of ultra-high molecular weight polyethylene and preparation method thereof |
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| Publication Number | Publication Date |
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| CN103672197A CN103672197A (en) | 2014-03-26 |
| CN103672197B true CN103672197B (en) | 2016-06-15 |
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| CN201310719076.5A Expired - Fee Related CN103672197B (en) | 2013-12-24 | 2013-12-24 | Multi-layer co-extruded mining conveying pipe of ultra-high molecular weight polyethylene and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641496A (en) * | 2017-03-21 | 2017-05-10 | 瑞金市金和塑业发展有限公司 | Polyethylene high elasticity modified material tubing |
| CN107965621A (en) * | 2017-11-03 | 2018-04-27 | 金华市华宇管业有限公司 | HDPE is molded push pipe |
| CN110131488A (en) * | 2019-05-29 | 2019-08-16 | 菏泽三垒塑业股份有限公司 | Composite winding pipe and production method thereof |
| CN110696456A (en) * | 2019-09-23 | 2020-01-17 | 镇江荣诚管业有限公司 | Polyethylene pipe for underground coal mine and preparation process thereof |
| CN113105680B (en) * | 2021-03-12 | 2021-12-17 | 华南理工大学 | Ultrahigh molecular weight polyethylene pipe and production process thereof |
| CN115873350A (en) * | 2022-11-01 | 2023-03-31 | 佛山市极高建材发展有限公司 | A kind of explosion-proof water pipe and its preparation method |
| CN118288624A (en) * | 2024-04-12 | 2024-07-05 | 广东东方管业股份有限公司 | A high-pressure tailings pipe material and preparation method thereof |
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| EP0507613A3 (en) * | 1991-04-03 | 1993-09-08 | Mitsui Petrochemical Industries, Ltd. | Ultra-high molecular weight polyethylene thin-wall pipe, and method of and apparatus for manufacturing the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CA2457430C (en) * | 2001-08-31 | 2011-10-18 | Dow Global Technologies Inc. | Multimodal polyethylene material |
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| EP0507613A3 (en) * | 1991-04-03 | 1993-09-08 | Mitsui Petrochemical Industries, Ltd. | Ultra-high molecular weight polyethylene thin-wall pipe, and method of and apparatus for manufacturing the same |
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| CN103672197A (en) | 2014-03-26 |
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