CN104403165A - Reinforced HDPE double-wall corrugated pipe and production method thereof - Google Patents
Reinforced HDPE double-wall corrugated pipe and production method thereof Download PDFInfo
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- CN104403165A CN104403165A CN201410615157.5A CN201410615157A CN104403165A CN 104403165 A CN104403165 A CN 104403165A CN 201410615157 A CN201410615157 A CN 201410615157A CN 104403165 A CN104403165 A CN 104403165A
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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
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Abstract
The invention relates to a reinforced HDPE double-wall corrugated pipe and a production method thereof. The formula of the reinforced HDPE double-wall corrugated pipe comprises, by weight, 100 parts of high density polyethylane (HDPE), 40-60 parts of wood powder, 1-3 parts of a titanate coupling agent and 7-9 parts of an ethylene-acrylic acid copolymer; the granularity of the wood powder is 80-110 meshes; and the content of acrylic acid in the ethylene-acrylic acid copolymer is 15-20%, and the melt index of the ethylene-acrylic acid copolymer is 30-40g/10min. The reinforced HDPE double-wall corrugated pipe produced in the invention has the advantages of good low-temperature impact toughness, good rigidity, high ring stiffness, good creep resistance, low cost and wide application prospect.
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 method thereof.
Background technology
Along with the rapid growth that Chinese national economy is continual and steady, for cities and towns infrastructure construction provides good macro environment and broad space.China is for the pay attention to day by day of environment protection, and governments at all levels of both the central and local governments have put into effect the policies and regulations of a series of water saving, pollution treatment protection of the environment.Water supply, water saving, draining and waste water control will become the emphasis of urban municipal construction from now on, and this provides market development space for applying of heavy-caliber plastic pipe.Because structured wall popes can conservation, reduce costs, therefore structured wall popes has become the main product of heavy caliber draining blow-off line.The U-PVC double-wall corrugated pipe that China is used for draining and blow-off line has good rigidity, the advantages such as price is low; But also there is the shortcoming of low temperature impact properties difference, be very easy to when north of china in winter is constructed damaged especially.And HDPE double-wall corrugated pipe has obvious advantage in low-temperature flexibility, but due to PE material behavior, its rigidity comparatively cement pipe is poor, comparatively PVC corrugated tube is poor for the ring stiffness of tubing and creep resisting ability, in life-time service process, easily by gravity deformation, affect product work-ing life.
Seldom relate in prior art and there is low-temperature flexibility, rigidity, ring stiffness and creep resisting ability simultaneously strengthen HDPE double-wall corrugated pipe all preferably; Therefore, exploitation is a kind of strengthens HDPE double-wall corrugated pipe, has very large meaning.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, there is provided a kind of and strengthen HDPE double-wall corrugated pipe and preparation method thereof, this enhancing HDPE double-wall corrugated pipe has good low-temperature impact toughness, good rigidly, ring stiffness is high, creep resisting ability is excellent, there is lower cost simultaneously, have broad application prospects.
The object of the invention is 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 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 part;
Ethylene acrylic acid co polymer 7 ~ 9 parts;
Wherein, the order number of described wood powder is 80 ~ 110 orders; In described ethylene acrylic acid co polymer, acrylic acid content is 15% ~ 20%, and the melting 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:
Dedicated drying production line is adopted namely to adopt two-stage assembled pulse air-flow to carry out drying described wood powder, detailed process is: dry 1 ~ 3 hour at 120 ~ 180 DEG C, make its moisture lower than 300mg/kg, mix with titanate coupling agent after being cooled to normal temperature, be heated to 60 ~ 70 DEG C, under 800 ~ 1100 revs/min of speed, dispersed with stirring 5 ~ 7 minutes, then adds ethylene acrylic acid co polymer, automatically cools after stirring; Then above-mentioned compound is mixed with high density polyethylene(HDPE), be then delivered to forcing machine, plasticizing is extruded, namely mould molding obtain and strengthen HDPE double-wall corrugated pipe.
In the present invention, because wood powder drying has that output is large but drying temperature can not be too high, drying temperature is too high easily on fire, adopts traditional drying plant to be difficult to meet large requirement of producing.Therefore the wood powder drying in the present invention adopts special drying production line, namely adopts two-stage assembled pulse air stream drying.When drying, wet wood powder is entered in the drying tube of first step Pulseairstreamingdrier lower end continuously by feeder.In drying tube, wood powder is broken up by high velocity, hot air and moves up, and material contacts fully with air-flow, and moisture is by rapid evaporation.Wood powder by after drying tube by cyclone collection, then enter second stage Pulseairstreamingdrier, again carry out drying, effectively extend the time of drying of material and achieve good effect.
Contriver finds that in experimentation the melting index of ethylene acrylic acid co polymer (EAA) and the content of vinylformic acid (AA) have larger impact equally on tubing.Suitable melting index and vinylformic acid (AA) content are conducive to improving the low-temperature flexibility of tubing, rigidity, ring stiffness and creep resisting ability.When the AA content of ethylene acrylic acid co polymer (EAA) is lower, the rigidity of tubing, creep resistance, chemical resistant properties are understood better, but toughness and environmental stress cracking poor-performing; When AA content is higher, toughness, the environmental stress cracking resistance of tubing can improve, but rigidity, creep resistance, chemical resistant properties can reduce.In addition, along with the raising of EAA melting index, its processing characteristics is better; Otherwise the toughness of tubing and environmental stress cracking resistance can increase; Therefore in the ethylene acrylic acid co polymer that the present invention selects, acrylic acid content is 15% ~ 20%, and the melting index of described ethylene acrylic acid co polymer is 30 ~ 40g/10min.
Further preferably, in described ethylene acrylic acid co polymer, acrylic acid content is 18%, and the melting index of described ethylene acrylic acid co polymer is 35g/10min.
Contriver finds in experimentation, and the order number of wood powder is larger on the low-temperature flexibility of tubing, rigidity, ring stiffness and creep resisting ability impact; Wood mesh is less, and surfaceness is high, short texture, and because high density polyethylene(HDPE) is nonpolar, and wood powder is polarity, both poor compatibility, and high density polyethylene(HDPE) melt not easily permeates in wood powder, easily forms cavity blemish around wood powder; And when wood mesh is excessive, wood powder particle diameter is little, easily reunite, these defects form stress concentration, under less effect, easily rupture, and 80 ~ 110 object wood powders, moderate in grain size, good with high density polyethylene(HDPE) consistency, now shock strength and flexural strength best.
Further preferably, the order number of described wood powder is 100 orders.
Preferably, described high density polyethylene(HDPE) is polyethylene PN049.
Compared with prior art, the present invention has following beneficial effect: the HDPE double-wall corrugated pipe that the present invention prepares not only has obvious advantage in low-temperature flexibility, pass through the good rigidly of the HDPE double-wall corrugated pipe regulating the selection etc. of acrylic acid content, wood mesh in the content of EAA in formula, its melting index and selection EAA to prepare simultaneously, ring stiffness is high, creep resisting ability is strong, in life-time service process, because of gravity deformation, thus the work-ing life of product can not be extended; Production cost is low simultaneously, has broad application prospects.
Embodiment
Below in conjunction with embodiment, the present invention will be further described.These embodiments are only describe typical case of the present invention, but the present invention is not limited thereto.Test method used in following embodiment if no special instructions, is ordinary method, the raw material used, reagent etc., if no special instructions, is 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 made up of the raw material of following weight parts:
Polyethylene PN049 100 parts;
Wood powder 40 parts;
Titanate coupling agent 1 part;
Ethylene acrylic acid co polymer 7 parts;
Wherein, the order number of described wood powder is 80 orders; In described ethylene acrylic acid co polymer, acrylic acid content is 15%, and the melting index of described 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 adopted to dry 3 hours at 120 DEG C described wood powder, make its moisture lower than 300mg/kg, mix with titanate coupling agent after being cooled to normal temperature, be heated to 60 DEG C, dispersed with stirring 7 minutes under 1100 revs/min of speed, then add ethylene acrylic acid co polymer, automatically cool after stirring; Then above-mentioned compound is mixed with polyethylene PN049, be then delivered to forcing machine, plasticizing is extruded, namely mould molding obtain and strengthen 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 made up of the raw material of following weight parts:
Polyethylene PN049 100 parts;
Wood powder 50 parts;
Titanate coupling agent 2 parts;
Ethylene acrylic acid co polymer 8 parts;
Wherein, the order number of described wood powder is 100 orders; In described ethylene acrylic acid co polymer, acrylic acid content is 18%, and the melting index of described 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 adopted to dry 1 hour at 180 DEG C described wood powder, make its moisture lower than 300mg/kg, mix with titanate coupling agent after being cooled to normal temperature, be heated to 70 DEG C, dispersed with stirring 5 minutes under 800 revs/min of speed, then add ethylene acrylic acid co polymer, automatically cool after stirring; Then above-mentioned compound is mixed with polyethylene PN049, be then delivered to forcing machine, plasticizing is extruded, namely mould molding obtain and strengthen 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 made up of the raw material of following weight parts:
Polyethylene PN049 100 parts;
Wood powder 60 parts;
Titanate coupling agent 3 parts;
Ethylene acrylic acid co polymer 9 parts;
Wherein, the order number of described wood powder is 110 orders; In described ethylene acrylic acid co polymer, acrylic acid content is 20%, and the melting index of described 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 adopted to dry 2 hours at 160 DEG C described wood powder, make its moisture lower than 300mg/kg, mix with titanate coupling agent after being cooled to normal temperature, be heated to 65 DEG C, dispersed with stirring 6 minutes under 1000 revs/min of speed, then add ethylene acrylic acid co polymer, automatically cool after stirring; Then above-mentioned compound is mixed with polyethylene PN049, be then delivered to forcing machine, plasticizing is extruded, namely mould molding obtain and strengthen 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 made up of the raw material of following weight parts:
Polyethylene PN049 100 parts;
Wood powder 20 parts;
Titanate coupling agent 1 part;
Ethylene acrylic acid co polymer 7 parts;
Wherein, the order number of described wood powder is 80 orders; In described ethylene acrylic acid co polymer, acrylic acid content is 15%, and the melting index of described 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 adopted to dry 3 hours at 120 DEG C described wood powder, make its moisture lower than 300mg/kg, mix with titanate coupling agent after being cooled to normal temperature, be heated to 60 DEG C, dispersed with stirring 7 minutes under 1100 revs/min of speed, then add ethylene acrylic acid co polymer, automatically cool after stirring; Then above-mentioned compound is mixed with polyethylene PN049, be then delivered to forcing machine, plasticizing is extruded, namely mould molding obtain and strengthen 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 made up of the raw material of following weight parts:
Polyethylene PN049 100 parts;
Wood powder 40 parts;
Titanate coupling agent 1 part;
Ethylene acrylic acid co polymer 7 parts;
Wherein, the order number of described wood powder is 60 orders; In described ethylene acrylic acid co polymer, acrylic acid content is 15%, and the melting index of described 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 adopted to dry 3 hours at 120 DEG C described wood powder, make its moisture lower than 300mg/kg, mix with titanate coupling agent after being cooled to normal temperature, be heated to 60 DEG C, dispersed with stirring 7 minutes under 1100 revs/min of speed, then add ethylene acrylic acid co polymer, automatically cool after stirring; Then above-mentioned compound is mixed with polyethylene PN049, be then delivered to forcing machine, plasticizing is extruded, namely mould molding obtain and strengthen 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 made up of the raw material of following weight parts:
Polyethylene PN049 100 parts;
Wood powder 40 parts;
Titanate coupling agent 1 part;
Ethylene acrylic acid co polymer 7 parts;
Wherein, the order number of described wood powder is 300 orders; In described ethylene acrylic acid co polymer, acrylic acid content is 15%, and the melting index of described 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 adopted to dry 3 hours at 120 DEG C described wood powder, make its moisture lower than 300mg/kg, mix with titanate coupling agent after being cooled to normal temperature, be heated to 60 DEG C, dispersed with stirring 7 minutes under 1100 revs/min of speed, then add ethylene acrylic acid co polymer, automatically cool after stirring; Then above-mentioned compound is mixed with polyethylene PN049, be then delivered to forcing machine, plasticizing is extruded, namely mould molding obtain and strengthen 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 made up of the raw material of following weight parts:
Polyethylene PN049 100 parts;
Wood powder 40 parts;
Titanate coupling agent 1 part;
Ethylene acrylic acid co polymer 7 parts;
Wherein, the order number of described wood powder is 80 orders; In described ethylene acrylic acid co polymer, acrylic acid content is 7%, and the melting index of described 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 adopted to dry 3 hours at 120 DEG C described wood powder, make its moisture lower than 300mg/kg, mix with titanate coupling agent after being cooled to normal temperature, be heated to 60 DEG C, dispersed with stirring 7 minutes under 1100 revs/min of speed, then add ethylene acrylic acid co polymer, automatically cool after stirring; Then above-mentioned compound is mixed with polyethylene PN049, be then delivered to forcing machine, plasticizing is extruded, namely mould molding obtain and strengthen 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 made up of the raw material of following weight parts:
Polyethylene PN049 100 parts;
Wood powder 40 parts;
Titanate coupling agent 1 part;
Ethylene acrylic acid co polymer 7 parts;
Wherein, the order number of described wood powder is 100 orders; In described ethylene acrylic acid co polymer, acrylic acid content is 22%, and the melting index of described 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 adopted to dry 3 hours at 120 DEG C described wood powder, make its moisture lower than 300mg/kg, mix with titanate coupling agent after being cooled to normal temperature, be heated to 60 DEG C, dispersed with stirring 7 minutes under 1100 revs/min of speed, then add ethylene acrylic acid co polymer, automatically cool after stirring; Then above-mentioned compound is mixed with polyethylene PN049, be then delivered to forcing machine, plasticizing is extruded, namely mould molding obtain and strengthen 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 made up of the raw material of following weight parts:
Polyethylene PN049 100 parts;
Wood powder 40 parts;
Titanate coupling agent 1 part;
Ethylene acrylic acid co polymer 7 parts;
Wherein, the order number of described wood powder is 80 orders; In described ethylene acrylic acid co polymer, acrylic acid content is 15%, and the melting index of described ethylene acrylic acid co polymer is 30g/10min;
The preparation method of described HDPE double-wall corrugated pipe comprises the steps:
Described wood powder adopts dedicated drying production line to dry 1 hour at 120 DEG C, make its moisture lower than 300mg/kg, stir with titanate coupling agent, ethylene acrylic acid co polymer and polyethylene PN049 after being cooled to normal temperature, be then delivered to forcing machine, plasticizing is extruded, namely mould molding obtain product.
The performance that embodiment 1 ~ 3 and reference examples 1 ~ 6 prepare the enhancing HDPE double-wall corrugated pipe obtained is as shown in table 1:
As shown in Table 1, the present invention not only has good low-temperature impact toughness by selecting high density polyethylene(HDPE), wood powder, titanate coupling agent, ethylene acrylic acid co polymer four kinds of components and the enhancing HDPE double-wall corrugated pipe that regulates the content of each component and prepare, simultaneously by the selection of AA content in EAA and the determination of melting index are made the HDPE double-wall corrugated pipe prepared good rigidly, ring stiffness is high, creep resisting ability is strong, in life-time service process, because of gravity deformation, thus the work-ing life of product can not be extended; Production cost is low simultaneously, has broad application prospects.By contrast, the rigidity of the tubing for preparing of each reference examples, ring stiffness and creep resisting ability are all significantly not as good as the present invention.
Claims (4)
1. strengthen a HDPE double-wall corrugated pipe, it is characterized in that, the formula of described 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 part;
Ethylene acrylic acid co polymer 7 ~ 9 parts;
Wherein, the order number of described wood powder is 80 ~ 110 orders; In described ethylene acrylic acid co polymer, acrylic acid content is 15% ~ 20%, and the melting index of described ethylene acrylic acid co polymer is 30 ~ 40g/10min;
The preparation method of described HDPE double-wall corrugated pipe comprises the steps:
Described wood powder is adopted two-stage assembled pulse air stream drying, dry 1 ~ 3 hour at 120 ~ 180 DEG C, make its moisture lower than 300mg/kg, mix with titanate coupling agent after being cooled to normal temperature, be heated to 60 ~ 70 DEG C, under 800 ~ 1100 revs/min of speed, dispersed with stirring 5 ~ 7 minutes, then adds ethylene acrylic acid co polymer, automatically cools after stirring; Then above-mentioned compound is mixed with high density polyethylene(HDPE), be then delivered to forcing machine, plasticizing is extruded, namely mould molding obtain and strengthen HDPE double-wall corrugated pipe.
2. enhancing HDPE double-wall corrugated pipe according to claim 1, is characterized in that, the order number of described wood powder is 100 orders.
3. enhancing HDPE double-wall corrugated pipe according to claim 1, it is characterized in that, described high density polyethylene(HDPE) is polyethylene PN049.
4. enhancing HDPE double-wall corrugated pipe according to claim 1, it is characterized in that, in described ethylene acrylic acid co polymer, acrylic acid content is 18%, and the melting index of described ethylene acrylic acid co polymer is 35 g/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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| CN104403165A true CN104403165A (en) | 2015-03-11 |
| CN104403165B CN104403165B (en) | 2016-08-24 |
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Citations (5)
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| 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 |
| 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 |
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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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