CN104403165B - A kind of enhancing HDPE double-wall corrugated pipe and preparation method thereof - Google Patents
A kind of enhancing HDPE double-wall corrugated pipe and preparation method thereof Download PDFInfo
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- CN104403165B CN104403165B CN201410615157.5A CN201410615157A CN104403165B CN 104403165 B CN104403165 B CN 104403165B CN 201410615157 A CN201410615157 A CN 201410615157A CN 104403165 B CN104403165 B CN 104403165B
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- acrylic acid
- wall corrugated
- corrugated pipe
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The present invention relates to a kind of enhancing HDPE double-wall corrugated pipe and preparation method thereof, the formula of described enhancing HDPE double-wall corrugated pipe is made up of the raw material of following weight parts: high density polyethylene (HDPE) 100 parts, wood powder 40～60 parts, titanate coupling agent 1～3 parts, ethylene acrylic acid co polymer 7～9 parts；Wherein, the mesh number of described wood powder is 80～110；In described ethylene acrylic acid co polymer, acrylic acid content is 15%～20%, and the melt index of described ethylene acrylic acid co polymer is 30～40g/10min；The enhancing HDPE double-wall corrugated pipe that the present invention prepares has preferable low-temperature impact toughness, good rigidly, ring stiffness is high, creep resisting ability is excellent, has relatively low cost simultaneously, has broad application prospects.
Description
Technical field
The present invention relates to plastic pipe technical field, be specifically related to a kind of enhancing HDPE double-wall corrugated pipe and preparation side thereof
Method.
Background technology
Along with the rapid growth that Chinese national economy is continual and steady, provide good macroscopic view for cities and towns infrastructure construction
Environment and broad space.China has put into effect a series of joint for the pay attention to day by day of environmental protection, governments at all levels of both the central and local governments
Water, the policies and regulations of pollution treatment protection environment.Supply water, water saving, draining and waste water control will become the weight of urban municipal construction from now on
Point, this is that the popularization and application of heavy-caliber plastic pipe provide market development space.Owing to structured wall popes can reduce with conservation
Cost, therefore structured wall popes has become as the main product of heavy caliber draining blow-off line.China is used for draining and blow-off line
U-PVC double-wall corrugated pipe have good rigidity, the advantages such as price is low；But the shortcoming also having low temperature impact properties difference, especially in north
It is very easy to breakage during side's winter construction.And HDPE double-wall corrugated pipe has obvious advantage in low-temperature flexibility, but due to PE material
Material characteristic, its rigidity relatively pipe of cement is poor, and the ring stiffness of tubing and creep resisting ability relatively PVC bellows is poor, in Long-Time Service process
In, easily by gravity deformation, affect product service life.
Prior art seldom relates to have low-temperature flexibility, rigidity, ring stiffness and creep resisting ability simultaneously the most preferable
Strengthen HDPE double-wall corrugated pipe；Therefore, exploitation one strengthens HDPE double-wall corrugated pipe, has great significance.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of enhancing HDPE double-wall corrugated pipe and preparation thereof
Method, this enhancing HDPE double-wall corrugated pipe has preferable low-temperature impact toughness, good rigidly, ring stiffness is high, creep resisting ability is excellent
Different, there is relatively low cost simultaneously, have broad application prospects.
It is an object of the invention to be achieved by following technical solution:
A kind of enhancing HDPE double-wall corrugated pipe, the formula of described HDPE double-wall corrugated pipe is by the raw material group of following weight parts
Become:
High density polyethylene (HDPE) 100 parts；
Wood powder 40～60 parts；
Titanate coupling agent 1～3 parts；
Ethylene acrylic acid co polymer 7～9 parts；
Wherein, the mesh number of described wood powder is 80～110 mesh；In described ethylene acrylic acid co polymer, acrylic acid content is
15%～20%, the melt index of described ethylene acrylic acid co polymer is 30～40g/10min.
The preparation method of above-mentioned HDPE double-wall corrugated pipe comprises the steps:
Two-stage assembled pulse air-flow is i.e. used to be dried described wood powder employing dedicated drying production line, detailed process
For: dry 1～3 hour at 120～180 DEG C so that it is moisture is less than 300mg/kg, mix with titanate coupling agent after being cooled to normal temperature
Close, be heated to 60～70 DEG C, dispersed with stirring 5～7 minutes under 800～1100 revs/min of speed, it is subsequently adding ethylene acrylic altogether
Polymers, cools down after stirring automatically；Then above-mentioned compound is mixed with high density polyethylene (HDPE), be then sent to extrusion
Machine, plasticizing extrusion, mould molding i.e. obtain enhancing HDPE double-wall corrugated pipe.
In the present invention, have that yield is big but baking temperature can not be the highest, baking temperature mistake owing to wood powder is dried
Height is the most on fire, uses traditional drying equipment to be difficult to meet the big requirement produced.Therefore the wood powder in the present invention is dried employing
Special drying production line, i.e. uses two-stage assembled pulse pneumatic conveying drying.When dry, wet wood powder is entered continuously by feeder
Enter in the drying tube of first order pulsed pneumatic dryer lower end.In drying tube, wood powder is broken up by high velocity, hot air and upwards moves
Dynamic, material contacts fully with air-flow, and moisture is by rapid evaporation.Wood powder by after drying tube by cyclone collection, then enter
Enter second level pulsed pneumatic dryer, be again dried, effectively extend the drying time of material and achieve well
Effect.
Inventor finds the melt index of ethylene acrylic acid co polymer (EAA) and containing of acrylic acid (AA) in experimentation
Amount has large effect equally to tubing.Suitable melt index and acrylic acid (AA) content are conducive to improving the low temperature of tubing
Toughness, rigidity, ring stiffness and creep resisting ability.When the AA content of ethylene acrylic acid co polymer (EAA) is relatively low, tubing firm
Property, creep resistance, chemical resistance can preferably, but toughness and ESC poor-performing；When AA content is higher, tubing
Toughness, environmental stress cracking resistance can improve, but rigidity, creep resistance, chemical resistance can reduce.It addition, along with EAA melts
The raising of index, its processing characteristics is preferable；Otherwise, the toughness of tubing and environmental stress cracking resistance can increase；Therefore this
In the ethylene acrylic acid co polymer of bright selection, acrylic acid content is 15%～20%, the melted finger of described ethylene acrylic acid co polymer
Number is 30～40g/10min.
It is further preferred that acrylic acid content is 18% in described ethylene acrylic acid co polymer, described ethylene acrylic is altogether
The melt index of polymers is 35g/10min.
Inventor finds in experimentation, and the mesh number of wood powder is to the low-temperature flexibility of tubing, rigidity, ring stiffness and anti-compacted
Become capacity bigger；Wood mesh is less, and surface roughness is high, short texture, owing to high density polyethylene (HDPE) is nonpolar, and
Wood powder is polarity, both poor compatibility, and high density polyethylene (HDPE) melt is difficult in wood powder infiltration, easily forms sky around wood powder
Hole defect；And when wood mesh is excessive, wood powder particle diameter is little, easily reuniting, these defects form stress and concentrate, in less effect
Under, be easily broken off, and the wood powder of 80～110 mesh, moderate in grain size, good with high density polyethylene (HDPE) compatibility, now impact strength and
Bending strength is best.
It is further preferred that the mesh number of described wood powder is 100 mesh.
Preferably, described high density polyethylene (HDPE) is polyethylene PN049.
Compared with prior art, there is advantages that the HDPE double-wall corrugated pipe that the present invention prepares
In low-temperature flexibility, not only there is obvious advantage, the content of EAA, its melt index and selection in being filled a prescription by regulation simultaneously
The good rigidly of HDPE double-wall corrugated pipe that in EAA, acrylic acid content, the selection etc. of wood mesh prepare, ring stiffness be high,
Creep resisting ability is strong, during Long-Time Service, because of gravity deformation, thus will not extend the service life of product；Produce simultaneously
Low cost, has broad application prospects.
Detailed description of the invention
Below in conjunction with embodiment, the present invention will be further described.These embodiments are only that the typical case to the present invention retouches
State, but the invention is not restricted to this.Test method used in following embodiment if no special instructions, is conventional method, is made
Raw material, reagent etc., if no special instructions, be the raw material and reagent that can obtain from commercial sources such as conventional markets.
Embodiment 1
A kind of enhancing HDPE double-wall corrugated pipe, the formula of described HDPE double-wall corrugated pipe is by the raw material group of following weight parts
Become:
Polyethylene PN049 100 parts；
Wood powder 40 parts；
Titanate coupling agent 1 part；
Ethylene acrylic acid co polymer 7 parts；
Wherein, the mesh number of described wood powder is 80 mesh；In described ethylene acrylic acid co polymer, acrylic acid content is 15%, institute
The melt index stating ethylene acrylic acid co polymer is 30g/10min；
The preparation method of described HDPE double-wall corrugated pipe comprises the steps:
Dedicated drying production line is used to dry 3 hours at 120 DEG C described wood powder so that it is moisture is less than 300mg/kg, cold
But mixing with titanate coupling agent to normal temperature, be heated to 60 DEG C, under 1100 revs/min of speed, dispersed with stirring 7 minutes, then add
Enter ethylene acrylic acid co polymer, automatically cool down after stirring；Then above-mentioned compound is mixed with polyethylene PN049,
Being then sent to extruder, plasticizing extrusion, mould molding i.e. obtain enhancing HDPE double-wall corrugated pipe.
Embodiment 2
A kind of enhancing HDPE double-wall corrugated pipe, the formula of described HDPE double-wall corrugated pipe is by the raw material group of following weight parts
Become:
Polyethylene PN049 100 parts；
Wood powder 50 parts；
Titanate coupling agent 2 parts；
Ethylene acrylic acid co polymer 8 parts；
Wherein, the mesh number of described wood powder is 100 mesh；In described ethylene acrylic acid co polymer, acrylic acid content is 18%, institute
The melt index stating ethylene acrylic acid co polymer is 35g/10min；
The preparation method of described HDPE double-wall corrugated pipe comprises the steps:
Dedicated drying production line is used to dry 1 hour at 180 DEG C described wood powder so that it is moisture is less than 300mg/kg, cold
But mixing with titanate coupling agent to normal temperature, be heated to 70 DEG C, under 800 revs/min of speed, dispersed with stirring 5 minutes, then add
Enter ethylene acrylic acid co polymer, automatically cool down after stirring；Then above-mentioned compound is mixed with polyethylene PN049,
Being then sent to extruder, plasticizing extrusion, mould molding i.e. obtain enhancing HDPE double-wall corrugated pipe.
Embodiment 3
A kind of enhancing HDPE double-wall corrugated pipe, the formula of described HDPE double-wall corrugated pipe is by the raw material group of following weight parts
Become:
Polyethylene PN049 100 parts；
Wood powder 60 parts；
Titanate coupling agent 3 parts；
Ethylene acrylic acid co polymer 9 parts；
Wherein, the mesh number of described wood powder is 110 mesh；In described ethylene acrylic acid co polymer, acrylic acid content is 20%, institute
The melt index stating ethylene acrylic acid co polymer is 40g/10min；
The preparation method of described HDPE double-wall corrugated pipe comprises the steps:
Dedicated drying production line is used to dry 2 hours at 160 DEG C described wood powder so that it is moisture is less than 300mg/kg, cold
But mixing with titanate coupling agent to normal temperature, be heated to 65 DEG C, under 1000 revs/min of speed, dispersed with stirring 6 minutes, then add
Enter ethylene acrylic acid co polymer, automatically cool down after stirring；Then above-mentioned compound is mixed with polyethylene PN049,
Being then sent to extruder, plasticizing extrusion, mould molding i.e. obtain enhancing HDPE double-wall corrugated pipe.
Reference examples 1
A kind of enhancing HDPE double-wall corrugated pipe, the formula of described HDPE double-wall corrugated pipe is by the raw material group of following weight parts
Become:
Polyethylene PN049 100 parts；
Wood powder 20 parts；
Titanate coupling agent 1 part；
Ethylene acrylic acid co polymer 7 parts；
Wherein, the mesh number of described wood powder is 80 mesh；In described ethylene acrylic acid co polymer, acrylic acid content is 15%, institute
The melt index stating ethylene acrylic acid co polymer is 30g/10min；
The preparation method of described HDPE double-wall corrugated pipe comprises the steps:
Dedicated drying production line is used to dry 3 hours at 120 DEG C described wood powder so that it is moisture is less than 300mg/kg, cold
But mixing with titanate coupling agent to normal temperature, be heated to 60 DEG C, under 1100 revs/min of speed, dispersed with stirring 7 minutes, then add
Enter ethylene acrylic acid co polymer, automatically cool down after stirring；Then above-mentioned compound is mixed with polyethylene PN049,
Being then sent to extruder, plasticizing extrusion, mould molding i.e. obtain enhancing HDPE double-wall corrugated pipe.
Reference examples 2
A kind of enhancing HDPE double-wall corrugated pipe, the formula of described HDPE double-wall corrugated pipe is by the raw material group of following weight parts
Become:
Polyethylene PN049 100 parts；
Wood powder 40 parts；
Titanate coupling agent 1 part；
Ethylene acrylic acid co polymer 7 parts；
Wherein, the mesh number of described wood powder is 60 mesh；In described ethylene acrylic acid co polymer, acrylic acid content is 15%, institute
The melt index stating ethylene acrylic acid co polymer is 30g/10min；
The preparation method of described HDPE double-wall corrugated pipe comprises the steps:
Dedicated drying production line is used to dry 3 hours at 120 DEG C described wood powder so that it is moisture is less than 300mg/kg, cold
But mixing with titanate coupling agent to normal temperature, be heated to 60 DEG C, under 1100 revs/min of speed, dispersed with stirring 7 minutes, then add
Enter ethylene acrylic acid co polymer, automatically cool down after stirring；Then above-mentioned compound is mixed with polyethylene PN049,
Being then sent to extruder, plasticizing extrusion, mould molding i.e. obtain enhancing HDPE double-wall corrugated pipe.
Reference examples 3
A kind of enhancing HDPE double-wall corrugated pipe, the formula of described HDPE double-wall corrugated pipe is by the raw material group of following weight parts
Become:
Polyethylene PN049 100 parts；
Wood powder 40 parts；
Titanate coupling agent 1 part；
Ethylene acrylic acid co polymer 7 parts；
Wherein, the mesh number of described wood powder is 300 mesh；In described ethylene acrylic acid co polymer, acrylic acid content is 15%, institute
The melt index stating ethylene acrylic acid co polymer is 30g/10min；
The preparation method of described HDPE double-wall corrugated pipe comprises the steps:
Dedicated drying production line is used to dry 3 hours at 120 DEG C described wood powder so that it is moisture is less than 300mg/kg, cold
But mixing with titanate coupling agent to normal temperature, be heated to 60 DEG C, under 1100 revs/min of speed, dispersed with stirring 7 minutes, then add
Enter ethylene acrylic acid co polymer, automatically cool down after stirring；Then above-mentioned compound is mixed with polyethylene PN049,
Being then sent to extruder, plasticizing extrusion, mould molding i.e. obtain enhancing HDPE double-wall corrugated pipe.
Reference examples 4
A kind of enhancing HDPE double-wall corrugated pipe, the formula of described HDPE double-wall corrugated pipe is by the raw material group of following weight parts
Become:
Polyethylene PN049 100 parts；
Wood powder 40 parts；
Titanate coupling agent 1 part；
Ethylene acrylic acid co polymer 7 parts；
Wherein, the mesh number of described wood powder is 80 mesh；In described ethylene acrylic acid co polymer, acrylic acid content is 7%, described
The melt index of ethylene acrylic acid co polymer is 28g/10min；
The preparation method of described HDPE double-wall corrugated pipe comprises the steps:
Dedicated drying production line is used to dry 3 hours at 120 DEG C described wood powder so that it is moisture is less than 300mg/kg, cold
But mixing with titanate coupling agent to normal temperature, be heated to 60 DEG C, under 1100 revs/min of speed, dispersed with stirring 7 minutes, then add
Enter ethylene acrylic acid co polymer, automatically cool down after stirring；Then above-mentioned compound is mixed with polyethylene PN049,
Being then sent to extruder, plasticizing extrusion, mould molding i.e. obtain enhancing HDPE double-wall corrugated pipe.
Reference examples 5
A kind of enhancing HDPE double-wall corrugated pipe, the formula of described HDPE double-wall corrugated pipe is by the raw material group of following weight parts
Become:
Polyethylene PN049 100 parts；
Wood powder 40 parts；
Titanate coupling agent 1 part；
Ethylene acrylic acid co polymer 7 parts；
Wherein, the mesh number of described wood powder is 100 mesh；In described ethylene acrylic acid co polymer, acrylic acid content is 22%, institute
The melt index stating ethylene acrylic acid co polymer is 60g/10min；
The preparation method of described HDPE double-wall corrugated pipe comprises the steps:
Dedicated drying production line is used to dry 3 hours at 120 DEG C described wood powder so that it is moisture is less than 300mg/kg, cold
But mixing with titanate coupling agent to normal temperature, be heated to 60 DEG C, under 1100 revs/min of speed, dispersed with stirring 7 minutes, then add
Enter ethylene acrylic acid co polymer, automatically cool down after stirring；Then above-mentioned compound is mixed with polyethylene PN049,
Being then sent to extruder, plasticizing extrusion, mould molding i.e. obtain enhancing HDPE double-wall corrugated pipe.
Reference examples 6
A kind of enhancing HDPE double-wall corrugated pipe, the formula of described HDPE double-wall corrugated pipe is by the raw material group of following weight parts
Become:
Polyethylene PN049 100 parts；
Wood powder 40 parts；
Titanate coupling agent 1 part；
Ethylene acrylic acid co polymer 7 parts；
Wherein, the mesh number of described wood powder is 80 mesh；In described ethylene acrylic acid co polymer, acrylic acid content is 15%, institute
The melt index stating ethylene acrylic acid co polymer is 30g/10min；
The preparation method of described HDPE double-wall corrugated pipe comprises the steps:
Described wood powder uses dedicated drying production line to dry 1 hour at 120 DEG C so that it is moisture is less than 300mg/kg, cooling
Stir with polyethylene PN049 with titanate coupling agent, ethylene acrylic acid co polymer to normal temperature, be then sent to extrusion
Machine, plasticizing extrusion, mould molding i.e. obtain product.
Embodiment 1～3 and reference examples 1～6 preparation obtained by the performance of enhancing HDPE double-wall corrugated pipe as shown in table 1:
As shown in Table 1, the present invention is by selecting high density polyethylene (HDPE), wood powder, titanate coupling agent, ethylene-acrylic acid copolymer
Four kinds of components of thing and regulate the content of each component and the enhancing HDPE double-wall corrugated pipe for preparing not only has good
Low-temperature impact toughness, simultaneously by the selection of AA content in EAA and the determination of melt index make the HDPE prepared
The good rigidly of double-wall corrugated pipe, ring stiffness are high, creep resisting ability strong, during Long-Time Service, will not because of gravity deformation, thus
Extend the service life of product；Production cost is low simultaneously, has broad application prospects.By contrast, each reference examples is prepared into
The rigidity of the tubing arrived, ring stiffness and creep resisting ability are all notable not as good as the present invention.
Claims (3)
1. one kind strengthens HDPE double-wall corrugated pipe, it is characterised in that the formula of described HDPE double-wall corrugated pipe is by following weight parts
Raw material composition:
Wherein, the mesh number of described wood powder is 80～110 mesh；In described ethylene acrylic acid co polymer acrylic acid content be 15%～
20%, the melt index of described ethylene acrylic acid co polymer is 30～40g/10min；Described high density polyethylene (HDPE) is polyethylene
PN049；The preparation method of described HDPE double-wall corrugated pipe comprises the steps:
Described wood powder is used two-stage assembled pulse pneumatic conveying drying, dries 1～3 hour at 120～180 DEG C so that it is moisture is less than
300mg/kg, mixes with titanate coupling agent after being cooled to normal temperature, is heated to 60～70 DEG C, under 800～1100 revs/min of speed
Dispersed with stirring 5～7 minutes, be subsequently adding ethylene acrylic acid co polymer, automatically cool down after stirring；Then by above-mentioned compound
Mixing with high density polyethylene (HDPE), be then sent to extruder, it is double-wall corrugated that plasticizing extrusion, mould molding i.e. obtain enhancing HDPE
Pipe.
Enhancing HDPE double-wall corrugated pipe the most according to claim 1, it is characterised in that the mesh number of described wood powder is 100 mesh.
Enhancing HDPE double-wall corrugated pipe the most according to claim 1, it is characterised in that in described ethylene acrylic acid co polymer
Acrylic acid content is 18%, and the melt index of described ethylene acrylic acid co polymer is 35g/10min.
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|---|---|---|---|
| CN201410615157.5A CN104403165B (en) | 2014-11-05 | 2014-11-05 | A kind of enhancing HDPE double-wall corrugated pipe and preparation method thereof |
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| CN104403165B true CN104403165B (en) | 2016-08-24 |
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| CN101942132A (en) * | 2010-08-13 | 2011-01-12 | 李若沛 | Manufacturing material for HDPE corrugated pipe with reinforced strength, rigidity and toughness and production process thereof |
| CN102276889A (en) * | 2010-06-09 | 2011-12-14 | 常熟市慧丰塑料制品有限公司 | High-density polyethylene wood-plastic composite pipe and preparation method thereof |
| CN103497396A (en) * | 2013-09-18 | 2014-01-08 | 天津盛象塑料管业有限公司 | Heavy-caliber double-wall corrugated pipe |
| CN103756088A (en) * | 2013-12-26 | 2014-04-30 | 宁波波尔管业开发有限公司 | High-temperature, temperature-resisting and wear-resisting polyethylene pipe |
-
2014
- 2014-11-05 CN CN201410615157.5A patent/CN104403165B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101831112A (en) * | 2010-05-14 | 2010-09-15 | 金发科技股份有限公司 | Halogen-free flame-retardant type injection molding-class polyolefin wood plastic composite material and preparation method thereof |
| CN102276889A (en) * | 2010-06-09 | 2011-12-14 | 常熟市慧丰塑料制品有限公司 | High-density polyethylene wood-plastic composite pipe and preparation method thereof |
| CN101942132A (en) * | 2010-08-13 | 2011-01-12 | 李若沛 | Manufacturing material for HDPE corrugated pipe with reinforced strength, rigidity and toughness and production process thereof |
| CN103497396A (en) * | 2013-09-18 | 2014-01-08 | 天津盛象塑料管业有限公司 | Heavy-caliber double-wall corrugated pipe |
| CN103756088A (en) * | 2013-12-26 | 2014-04-30 | 宁波波尔管业开发有限公司 | High-temperature, temperature-resisting and wear-resisting polyethylene pipe |
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