CN102514166B - Ultra-high molecular weight polyethylene wear-resisting pipe extrusion molding technology - Google Patents
Ultra-high molecular weight polyethylene wear-resisting pipe extrusion molding technology Download PDFInfo
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- CN102514166B CN102514166B CN201110436316.1A CN201110436316A CN102514166B CN 102514166 B CN102514166 B CN 102514166B CN 201110436316 A CN201110436316 A CN 201110436316A CN 102514166 B CN102514166 B CN 102514166B
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- molecular weight
- weight polyethylene
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- extrusion molding
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Classifications
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- 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
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- 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
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9115—Cooling of hollow articles
- B29C48/912—Cooling of hollow articles of tubular films
- B29C48/913—Cooling of hollow articles of tubular films externally
Abstract
The invention discloses an ultra-high molecular weight polyethylene (UHMWPE) wear-resisting pipe extrusion molding technology, comprising the following steps: selecting 87-91 wt% of UHMWPE powder having the molecular weight of 2.5-3 million, 3-5 wt% of glass microsphere, 3-5 wt% of nano-clay, and 2-4 wt% of graphite, uniformly mixing the above raw materials with a high speed by a high-speed mixer to allow the water content in the uniformly mixed materials to be less than 0.4 %, carrying out extrusion molding, shaping, cooling, dragging, cutting and quality inspection on the uniformly mixed materials to obtain the UHMWPE wear-resisting pipe. The technology has the advantages of quick extrusion speed, and high production efficiency, and the prepared pipe has improved wear resistance, long service life, and low production cost.
Description
Technical field
The present invention relates to a kind of expressing technique of wear-resistant pipe, particularly the extruding-out process of ultrahigh molecular weight polyethylene abrasion-proof pipe.
Background technology
Ultra-high molecular weight polyethylene (UHMW-PE) mean molecule quantity approximately 350,000～8,000,000, have the performance such as shock-resistant, wear-resistant, self lubricity, resistance to chemical attack of the unrivaled excellence of other plastics because molecular weight is high.And ultra-high molecular weight polyethylene (UHMW-PE) resistance to low temperature excellence still has higher impact strength in the time of-40 ℃, even can use under-269 ℃.
Ultra-high molecular weight polyethylene is subject to the impact of the factors such as temperature, pressure, extruded velocity, hauling speed in the process of extrusion molding, and the characteristic of ultra-high molecular weight polyethylene raw material has determined the difficulty of ultrahigh molecular weight polyethylene tubing processing, when producing, speed of production is only 2% of common plastics tube material products speed of production, production efficiency is low, energy consumption is large, and ultrahigh molecular weight polyethylene tubing products appearance quality and the inherent quality produced are all very poor, the application of impact restriction ultra-high molecular weight polyethylene product.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of ultrahigh molecular weight polyethylene abrasion-proof tube extrusion molding technique, and this technique extruded velocity is fast, and production efficiency is high, and the tubing wearability made improves, and extend service life, and production cost reduces.
For solving the problems of the technologies described above, a kind of ultrahigh molecular weight polyethylene abrasion-proof tube extrusion molding of the present invention technique comprises the following steps:
1. be calculated in mass percent, raw material is chosen ultra-high molecular weight polyethylene powder, the glass microballoon of 3%-5%, the nanoclay of 3%-5%, the 2%-4% graphite that the 87%-91% molecular weight is 250-300 ten thousand, use high-speed mixer to carry out high-speed stirring above-mentioned raw material and be mixed evenly, the moisture in the material mixed is below 0.4%;
2. the material 1. step mixed joins the screw extruder barrel from hopper, under the screw rod turning effort, be fed forward material to feeding section by material tube inner wall and the effect of screw surface fricting shearing, compressed, melting, homogenization process, material progressively becomes high viscoelastic body by powdery solid, and the die extrusion on screw extruder head, obtaining and mouthful tubing that the mould shape is consistent, extrusion temperature is 170-240 ℃;
3. the tubing of 2. step being extruded adopts resistant to elevated temperatures wear-resistant oil carry out cooling hardening and finalize the design, and, in cooling, product is drawn on continuous uniform ground, and described chilling temperature is 100-105 ℃;
4. the product 3. step obtained is cut or is batched according to production requirement, and warehouse-in, obtain the ultrahigh molecular weight polyethylene abrasion-proof pipe after the assay was approved.
The speed of mainshaft of described high-speed mixer is 430-860rpm.
The present invention has following beneficial effect:
The first, formula improves: add a small amount of glass microballoon in raw material, glass microballoon is a kind of of many uses, a kind of new material that performance is special, and this product is processed through high-tech by the borosilicate raw material, and granularity is 10-250 microns, wall thickness 1-2 micron.This product has light weight, low heat conduction, higher intensity, the good advantages such as chemical stability, and its surface has the oleophyllie hydrophobic performance through specially treated, is very easy to be scattered in the organic material system.The wearability that the adding of glass microballoon can make goods improves more than 40%, and heat distortion temperature can improve 42 ℃, can make ultra-high molecular weight polyethylene be uniformly dispersed after adding glass microballoon, and stress is concentrated and reduced, and impact strength decreased is slow, and hot strength is higher, and hardness is large; The significant variation occurs in add mechanical property, the thermal property that can make the ultra-high molecular weight polyethylene polymer of nanoclay, and can play the common inorganics filled effect of 25%-30%.By adjusting raw-material proportioning to produce different goods, thereby enlarge the scope of application of tubing, in addition, two kinds of additives are cheap can effectively reduce costs for this.
Second, the improvement of production technology: by traditional single screw extrusion molding, be improved to the reaction extrusion molding in the extrusion molding new technology, improvement to existing extrusion equipment, extrusion die adopts the tubulation die head, the moment of torsion that adds gear wheel, cooling section adopts wear-resistant oil cooled mode to carry out cooling and shaping to goods, thereby guarantees quality of item, enhances productivity.
The specific embodiment
Embodiment 1
1. be calculated in mass percent, raw material is chosen the ultra-high molecular weight polyethylene powder that 91% molecular weight is 250-300 ten thousand, 4% glass microballoon, 3% nanoclay, 2% graphite, using high-speed mixer to carry out high-speed stirring above-mentioned raw material is mixed even, the speed of mainshaft of described high-speed mixer is 860rpm, and the moisture in the material mixed is 0.2%;
2. the material 1. step mixed joins the screw extruder barrel from hopper, under the screw rod turning effort, be fed forward material to feeding section by material tube inner wall and the effect of screw surface fricting shearing, compressed, melting, homogenization process, material progressively becomes high viscoelastic body by powdery solid, and the die extrusion on screw extruder head, obtaining and mouthful tubing that the mould shape is consistent, extrusion temperature is 240 ℃;
3. the tubing of 2. step being extruded adopts resistant to elevated temperatures wear-resistant oil carry out cooling hardening and finalize the design, and, in cooling, product is drawn on continuous uniform ground, and described chilling temperature is 105 ℃;
4. the product 3. step obtained is cut or is batched according to production requirement, and warehouse-in, obtain the ultrahigh molecular weight polyethylene abrasion-proof pipe after the assay was approved.
Embodiment 2
A kind of ultrahigh molecular weight polyethylene abrasion-proof tube extrusion molding technique comprises the following steps:
1. be calculated in mass percent, raw material is chosen the ultra-high molecular weight polyethylene powder that 87% molecular weight is 250-300 ten thousand, 4% glass microballoon, 5% nanoclay, 4% graphite, using high-speed mixer to carry out high-speed stirring above-mentioned raw material is mixed even, the speed of mainshaft of high-speed mixer is 430rpm, and the moisture in the material mixed is 0.3%;
2. the material 1. step mixed joins the screw extruder barrel from hopper, under the screw rod turning effort, be fed forward material to feeding section by material tube inner wall and the effect of screw surface fricting shearing, compressed, melting, homogenization process, material progressively becomes high viscoelastic body by powdery solid, and the die extrusion on screw extruder head, obtaining and mouthful tubing that the mould shape is consistent, extrusion temperature is 170 ℃;
3. the tubing of 2. step being extruded adopts resistant to elevated temperatures wear-resistant oil carry out cooling hardening and finalize the design, and, in cooling, product is drawn on continuous uniform ground, and described chilling temperature is 100 ℃;
4. the product 3. step obtained is cut or is batched according to production requirement, and warehouse-in, obtain the ultrahigh molecular weight polyethylene abrasion-proof pipe after the assay was approved.
Embodiment 3
A kind of ultrahigh molecular weight polyethylene abrasion-proof tube extrusion molding technique comprises the following steps:
1. be calculated in mass percent, raw material is chosen the ultra-high molecular weight polyethylene powder that 89% molecular weight is 250-300 ten thousand, 3% glass microballoon, 4% nanoclay, 4% graphite, using high-speed mixer to carry out high-speed stirring above-mentioned raw material is mixed even, the speed of mainshaft of described high-speed mixer is 650rpm, and the moisture in the material mixed is 0.3%;
2. the material 1. step mixed joins the screw extruder barrel from hopper, under the screw rod turning effort, be fed forward material to feeding section by material tube inner wall and the effect of screw surface fricting shearing, compressed, melting, homogenization process, material progressively becomes high viscoelastic body by powdery solid, and the die extrusion on screw extruder head, obtaining and mouthful tubing that the mould shape is consistent, extrusion temperature is 170-240 ℃;
3. the tubing of 2. step being extruded adopts resistant to elevated temperatures wear-resistant oil carry out cooling hardening and finalize the design, and, in cooling, product is drawn on continuous uniform ground, and described chilling temperature is 100-105 ℃;
4. the product 3. step obtained is cut or is batched according to production requirement, and warehouse-in, obtain the ultrahigh molecular weight polyethylene abrasion-proof pipe after the assay was approved.
Claims (1)
1. a ultrahigh molecular weight polyethylene abrasion-proof tube extrusion molding technique, is characterized in that, comprises the following steps:
1. raw material proportioning: be calculated in mass percent, raw material is chosen ultra-high molecular weight polyethylene powder, the glass microballoon of 3%-5%, the nanoclay of 3%-5%, the 2%-4% graphite that the 87%-91% molecular weight is 250-300 ten thousand, using high-speed mixer to carry out high-speed stirring above-mentioned raw material is mixed even, the speed of mainshaft of described high-speed mixer is 430-860rpm, and the moisture in the material mixed is below 0.4%;
2. the material 1. step mixed joins the screw extruder barrel from hopper, under the screw rod turning effort, be fed forward material to feeding section by material tube inner wall and the effect of screw surface fricting shearing, compressed, melting, homogenization process, material progressively becomes high viscoelastic body by powdery solid, and the die extrusion on screw extruder head, obtaining and mouthful tubing that the mould shape is consistent, extrusion temperature is 170-240 ℃;
3. the tubing of 2. step being extruded adopts resistant to elevated temperatures wear-resistant oil carry out cooling hardening and finalize the design, and, in cooling, product is drawn on continuous uniform ground, and described chilling temperature is 100-105 ℃;
4. the product 3. step obtained is cut or is batched according to production requirement, and warehouse-in, obtain the ultrahigh molecular weight polyethylene abrasion-proof pipe after the assay was approved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110436316.1A CN102514166B (en) | 2011-12-23 | 2011-12-23 | Ultra-high molecular weight polyethylene wear-resisting pipe extrusion molding technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110436316.1A CN102514166B (en) | 2011-12-23 | 2011-12-23 | Ultra-high molecular weight polyethylene wear-resisting pipe extrusion molding technology |
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| Publication Number | Publication Date |
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| CN102514166A CN102514166A (en) | 2012-06-27 |
| CN102514166B true CN102514166B (en) | 2014-01-01 |
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| CN201110436316.1A Expired - Fee Related CN102514166B (en) | 2011-12-23 | 2011-12-23 | Ultra-high molecular weight polyethylene wear-resisting pipe extrusion molding technology |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102964659B (en) * | 2012-11-05 | 2014-12-17 | 山西晋龙通达管业有限公司 | Multifunctional polyethylene and stainless steel composite pipe |
| CN103694533A (en) * | 2013-12-04 | 2014-04-02 | 江苏金波新材料科技有限公司 | Anti-static polyethylene pipe and preparation method thereof |
| CN104004257B (en) * | 2014-06-12 | 2016-10-05 | 山东国塑科技实业有限公司 | Modified with ultrahigh molecular weight polyethylene Antiwear composite pipe material and preparation method thereof |
| CN104019233A (en) * | 2014-06-19 | 2014-09-03 | 桂林恒昌电子科技有限公司 | Manufacturing method of sealing gaskets made of high polymer materials |
| CN104212035A (en) * | 2014-09-05 | 2014-12-17 | 扬州巨业耐磨复合材料有限责任公司 | Processing method of high-strength self-lubricating ultra-high molecular weight polyethylene wear-resistant composite pipe |
| CN105860185A (en) * | 2015-01-22 | 2016-08-17 | 宁夏恒辉油气技术服务有限公司 | Lining oil tube and production method thereof |
| CN108264730B (en) * | 2017-01-04 | 2020-05-15 | 中国海洋大学 | Preparation method of solid buoyancy section bar |
| CN113337026A (en) * | 2021-06-25 | 2021-09-03 | 广西顺通高分子材料科技有限公司 | Preparation process of corrosion-resistant PE drain pipe |
| CN114230896B (en) * | 2021-12-30 | 2023-11-24 | 海南华塑科技集团有限公司 | Wear-resistant anti-scaling ultra-high molecular weight polyethylene pipe for mine and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101020769A (en) * | 2007-03-15 | 2007-08-22 | 上海交通大学 | Prepn process of thermoplastic wood-plastic composite material based on polyethylene vinyl acetate |
| WO2008124810A1 (en) * | 2007-04-10 | 2008-10-16 | World Properties, Inc. | Foam articles and methods of producing the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| SG181555A1 (en) * | 2009-12-29 | 2012-07-30 | Rogers Corp | Conductive polymer foams, method of manufacture, and uses thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101020769A (en) * | 2007-03-15 | 2007-08-22 | 上海交通大学 | Prepn process of thermoplastic wood-plastic composite material based on polyethylene vinyl acetate |
| WO2008124810A1 (en) * | 2007-04-10 | 2008-10-16 | World Properties, Inc. | Foam articles and methods of producing the same |
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