CN103807518A - Novel high-strength HDPE (high-density polyethylene) corrugated pipe and production method thereof - Google Patents

Novel high-strength HDPE (high-density polyethylene) corrugated pipe and production method thereof Download PDF

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CN103807518A
CN103807518A CN201210448477.7A CN201210448477A CN103807518A CN 103807518 A CN103807518 A CN 103807518A CN 201210448477 A CN201210448477 A CN 201210448477A CN 103807518 A CN103807518 A CN 103807518A
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hdpe
parts
outer shell
shell layer
pipe
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郭翠芳
林枫
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    • 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
    • F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
    • F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
    • 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
    • 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
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/04—Thermoplastic elastomer
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/06—Properties of polyethylene
    • C08L2207/062—HDPE
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20—Controlling water pollution; Waste water treatment

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention discloses a novel high-strength HDPE (high-density polyethylene) corrugated pipe. The innermost layer of a water pipe is an HDPE core pipe; a stainless steel net layer wraps outside the HDPE core pipe and is wrapped by a PE (polyethylene) outer layer; an arc corrugated shell layer wraps the PE outer layer. The novel high-strength HDPE corrugated pipe has the characteristics such as good impact resistance, high compression strength, low production cost, good heat preservation and difficult influence by climate. The compression strength of the corrugated pipe is increased by the stainless steel net layer, and cracking phenomenon of the corrugated pipe difficultly occurs; the corrugated pipe has well impact resistance and can meet the demands with thin pipe wall during applying. A polyurethane foam plastic is filled between the PE outer layer and a corrugated weather proof layer, so the temperature of a pipeline is not easily influenced by environment; the weather fastness of the corrugated pipe is superior to those of common plastic pipelines, and the corrugated pipe has an optimistic application prospect and belongs to an upgrading product of the traditional PE corrugated pipe.

Description

Novel high-strength HDPE bellows and production method thereof
Technical field
The present invention relates to a kind of HDPE bellows, particularly a kind of novel high-strength HDPE bellows and production method thereof.
Background technique
HDPE bellows is taken as the leading factor mainly with polyvinyl piping materials now, there is the features such as lightweight, high pressure resistant, good toughness, fast life-span of construction be long, the good corrosion resistance having except thering is common plastics tube, insulating properties is high, inner wall smooth, the features such as flow resistance is little are to locate, also, because having adopted special hollow ring structure, there is excellent ring stiffness and good strength and toughness, and lightweight, impact resistance is strong, not the feature such as cracky.The current extensive use of numerous areas in developed country, especially in the U.S., Canada, Japanese and European many countries, double-wall corrugated pipe is widely used in municipal drainage blowdown, agricultural irrigation, the fields such as coalmine ventilation, chemical industry, telecommunication cable sheath.At present, the development of HDPE bellows is very fast, a lot of a lot of about the invention of bellows, as Chinese patent discloses a kind of " steel strengthens PE bellows and manufacturing equipment (number of patent application 2011100879570) thereof ", this bellows comprises the inner-walls of duct being rolled by plastic board/belt spiral, is at least surrounded by one deck steel mesh in inner-walls of duct outside, at the coated tube wall polyethylene layer in steel mesh outside, steel band is fixed on polyethylene layer, and at steel band outer cladding polyethylene layer.Although this present invention can do pipe diameter very large, solved to a certain extent the perishable problem of getting rusty of existing metal tube, but exist complex process, heat insulating ability is poor, impact resistance is poor, compressive strength is not high, cost of production is high, be subject to the defects such as climatic impact.
Summary of the invention
The object of the invention is to provide a kind of novel high-strength HDPE bellows and production method thereof, solving existing pipe production complex process, impact resistance is poor, compressive strength is not high, cost of production is high, heat insulating ability is poor, be subject to the technical problems such as climatic impact.
For solving the problems of the technologies described above, technological scheme of the present invention is: a kind of novel high-strength HDPE bellows, described water pipe innermost layer is HDPE core pipe, described HDPE core pipe is wrapped with stainless steel stratum reticulare, stainless steel stratum reticulare is wrapped with PE skin, described PE skin is enclosed with arc corrugated outer shell layer, between described PE skin and arc corrugated outer shell layer, is filled with polyurethane foam plastics.
As preferably, described PE skin is made up by weight of following component: 50 parts of PE resins (high density polyethylene (HDPE)), 2 parts～3 parts of mica flours, 3～8 parts of SBS styrene analog thermoplastic elastomers (TPU).
As preferably, described outer shell layer is made up by weight of following component: 80～85 parts of HDPE resins, 3 parts～6 parts of calcium sulfate crystal whiskers, 1～2 part of nano titanium oxide, 2～3 parts of aluminium borate whiskers, four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] 0.3～0.5 part of pentaerythritol ester, 0.3～0.5 part of septichen phenyl ester, 0.2～0.3 part of Tissuemat E.
A production method for novel high-strength HDPE bellows, the method comprises the following steps: A. is by weight HDPE resin is dropped into the first extruder hopper; After being mixed, PE resin, mica flour, SBS styrene analog thermoplastic elastomer (TPU) drop in the second extruder hopper; By weight by HDPE resin, calcium sulfate crystal whiskers, after mixing, nano titanium oxide, aluminium borate whisker, four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester, septichen phenyl ester part, Tissuemat E drop in outer shell layer extruder hopper;
B. while production, the first extruder is extruded HDPE core pipe 5, HDPE core pipe after extruding is after water-cooled and sizing, Stainless Steel Wire is wrapped in HDPE core pipe in the mode of left-handed dextrorotation from the right and left respectively, the angle being wound around is 50 degree, make tubing axially and hoop uniform stressed, be formed as stainless steel stratum reticulare;
C. on HDPE core pipe be wound around after through heating, then extruding PE skin by the second extruder wraps up HDPE core pipe, again after outer shell layer extruder, corrugation forming machine, arc corrugated outer shell layer is by outer PE parcel, after outer shell layer is shaped, some holes are bored at protruding place on outer shell layer, filled polyurethane expandable plastic, sealing boring, allow body rotate, under centrifugal effect, guarantee that filled polyurethane expandable plastic sticks to one with outer shell layer outer PE, thereby obtain novel high-strength HDPE bellows.
In the present invention, calcium sulfate crystal whiskers, nano titanium oxide, aluminium borate whisker synergy, have good dispersive property and surface activity; SBS styrene analog thermoplastic elastomer, can effectively improve the toughness of goods and rigidity, heat distortion temperature, dimensional stability.
The present invention has that shock resistance is good, compressive strength is high, cost of production is low, good heat preservation performance, be difficult for the features such as climate impact.Its stainless steel stratum reticulare can increase bellows compressive strength, impels bellows to be difficult for fracture phenomena occurs, and has good shock resistance simultaneously, only needs thinner tube wall just can meet the demands when application.Between PE skin and corrugated weathering layer, be filled with polyurethane foam plastics, can keep the temperature of pipeline not to be subject to the impact of environment.The weather resistance that makes pipeline is that general plastic pipe can not be compared.Therefore application prospect optimism is the Updated product of conventional P E bellows.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is structure sectional view of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, technological scheme of the present invention is described in further detail.
Fig. 1 is structural representation of the present invention; Fig. 2 is structure sectional view of the present invention.From Fig. 1, in conjunction with Fig. 2, a kind of novel high-strength HDPE bellows is made up of HDPE core pipe 5, stainless steel stratum reticulare 3 etc.Water pipe innermost layer is HDPE core pipe 5, HDPE core pipe 5 is wrapped with stainless steel stratum reticulare 3, stainless steel stratum reticulare 3 is wrapped with PE skin 4, and PE skin 4 is enclosed with arc corrugated outer shell layer 31, between PE outer 4 and arc corrugated outer shell layer 31, is filled with polyurethane foam plastics 32.
Below the several examples during novel high-strength HDPE bellows is manufactured.
Embodiment 1: by weight 50 parts of HDPE resins (high density polyethylene (HDPE)) are dropped into the first extruder hopper; By weight dropping in the second extruder hopper after 50 parts of PE resins, 2 parts of mica flours, 8 parts of mixing of SBS styrene analog thermoplastic elastomer (TPU); By weight by 80 parts of HDPE resins, 2 parts of calcium sulfate crystal whiskers, after 1 part of nano titanium oxide, 1 part of aluminium borate whisker, four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] 0.3 part of pentaerythritol ester, 0.3 part of septichen phenyl ester, 0.2 part of mixing of Tissuemat E, drop in outer shell layer extruder hopper.When production, the first extruder is extruded HDPE core pipe 5, HDPE core pipe 5 after extruding is after water-cooled and sizing, Stainless Steel Wire is wrapped in HDPE core pipe 5 in the mode of left-handed dextrorotation from the right and left respectively, the angle being wound around is 50 degree, make tubing axially and hoop uniform stressed, be formed as stainless steel stratum reticulare 3.On HDPE core pipe 5 be wound around after through heating, then extruding PE skin by the second extruder wraps up HDPE core pipe 5, again after outer shell layer extruder, corrugation forming machine, arc corrugated outer shell layer 31 is by outer PE parcel, after outer shell layer 31 is shaped, some holes are bored at protruding place on outer shell layer 31, pour into polyurethane foam plastics 32, sealing boring, allow body rotate, under centrifugal effect, guarantee that the polyurethane foam plastics 32 of filling sticks to one with outer shell layer outer PE, thereby obtain excellent novel high-strength HDPE bellows.
Embodiment 2: by weight 50 parts of HDPE resins (high density polyethylene (HDPE)) are dropped into the first extruder hopper; By weight dropping in the second extruder hopper after 50 parts of PE resins, 3 parts of mica flours, 3 parts of mixing of SBS styrene analog thermoplastic elastomer (TPU); By weight by 82 parts of HDPE resins, 3 parts of calcium sulfate crystal whiskers, after 2 parts of nano titanium oxides, 1 part of aluminium borate whisker, four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] 0.5 part of pentaerythritol ester, 0.4 part of septichen phenyl ester, 0.3 part of mixing of Tissuemat E, drop in outer shell layer extruder hopper.The mode of production is the same.
Embodiment 3: by weight 50 parts of HDPE resins (high density polyethylene (HDPE)) are dropped into the first extruder hopper; By weight dropping in the second extruder hopper after 50 parts of PE resins, 2.5 parts of mica flours, 3～8 parts of mixing of SBS styrene analog thermoplastic elastomer (TPU); By weight by 80 parts of HDPE resins, 2.5 parts of calcium sulfate crystal whiskers, after 1 part of nano titanium oxide, 2 parts of aluminium borate whiskers, four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] 0.3 part of pentaerythritol ester, 0.5 part of septichen phenyl ester, 0.2 part of mixing of Tissuemat E, drop in outer shell layer extruder hopper.The mode of production is the same.
In order to verify effect of the present invention, embodiment 1-3 is contrasted than the existing HDPE bellows of other company, shown in table specific as follows.
Table 1: the contrast and experiment between two kinds of bellowss
Test item Embodiment 1 Existing bellows Embodiment 2 Existing bellows Embodiment 3 Existing bellows
Flexural strength (Mpa) 22 12 21 12 23 12
Tensile strength (Mpa) 30 22 28 22 29 22
Specific elongation (%) 420 400 425 400 422 400
Flexural modulus (Mpa) 560 530 555 550 565 530
Impact strength (kj/m 2） 32 22 32 22 33 22
The result shows: compare other like product, the HDPE bellows that adopts the present invention to prepare, has better mechanical property and wear resistance.
Finally, it should be pointed out that above embodiment is only the more representational example of the present invention.Obviously, the invention is not restricted to above-mentioned embodiment.Any simple modification, equivalent variations and modification that every foundation technical spirit of the present invention is done above embodiment, all should think and belong to protection scope of the present invention.

Claims (4)

1. a novel high-strength HDPE bellows, it is characterized in that described water pipe innermost layer is HDPE core pipe, described HDPE core pipe is wrapped with stainless steel stratum reticulare, stainless steel stratum reticulare is wrapped with PE skin, described PE skin is enclosed with arc corrugated outer shell layer, between described PE skin and arc corrugated outer shell layer, is filled with polyurethane foam plastics.
2. novel high-strength HDPE bellows according to claim 1, it is characterized in that described PE skin is made up by weight of following component: 50 parts of PE resins (high density polyethylene (HDPE)), 2 parts～3 parts of mica flours, 3～8 parts of SBS styrene analog thermoplastic elastomers (TPU).
3. novel high-strength HDPE bellows according to claim 1, it is characterized in that described outer shell layer is made up by weight of following component: 80～85 parts of HDPE resins, 3 parts～6 parts of calcium sulfate crystal whiskers, 1～2 part of nano titanium oxide, 2～3 parts of aluminium borate whiskers, four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] 0.3～0.5 part of pentaerythritol ester, 0.3～0.5 part of septichen phenyl ester, 0.2～0.3 part of Tissuemat E.
4. a production method for novel high-strength HDPE bellows, the method comprises the following steps: A. is by weight HDPE resin is dropped into the first extruder hopper; After being mixed, PE resin, mica flour, SBS styrene analog thermoplastic elastomer (TPU) drop in the second extruder hopper; By weight by HDPE resin, calcium sulfate crystal whiskers, after mixing, nano titanium oxide, aluminium borate whisker, four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester, septichen phenyl ester part, Tissuemat E drop in outer shell layer extruder hopper;
B. while production, the first extruder is extruded HDPE core pipe 5, HDPE core pipe after extruding is after water-cooled and sizing, Stainless Steel Wire is wrapped in HDPE core pipe in the mode of left-handed dextrorotation from the right and left respectively, the angle being wound around is 50 degree, make tubing axially and hoop uniform stressed, be formed as stainless steel stratum reticulare;
C. on HDPE core pipe be wound around after through heating, then extruding PE skin by the second extruder wraps up HDPE core pipe, again after outer shell layer extruder, corrugation forming machine, arc corrugated outer shell layer is by outer PE parcel, after outer shell layer is shaped, some holes are bored at protruding place on outer shell layer, filled polyurethane expandable plastic, sealing boring, allow body rotate, under centrifugal effect, guarantee that filled polyurethane expandable plastic sticks to one with outer shell layer outer PE, thereby obtain novel high-strength HDPE bellows.
CN201210448477.7A 2012-11-12 2012-11-12 Novel high-strength HDPE (high-density polyethylene) corrugated pipe and production method thereof Pending CN103807518A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104311965A (en) * 2014-10-30 2015-01-28 安徽电信器材贸易工业有限责任公司 Special material with high tear resistance for communication optical cable protective sleeve and preparation method of special material
CN104455804A (en) * 2014-11-17 2015-03-25 苏州瑞邦塑胶有限公司 Plastic pipe
CN105156766A (en) * 2015-09-24 2015-12-16 江苏广通管业制造有限公司 Double-wall heat-preserving corrugated pipe
CN109506056A (en) * 2018-11-23 2019-03-22 永亨控股集团有限公司 Nanometer enhancing high density polyethylene (HDPE) spigot-and-socket double-wall corrugated pipe and production method
CN111873388A (en) * 2020-06-24 2020-11-03 安徽塑茂管道科技有限公司 Inner and outer ring cooling equipment for Krah pipe production and operation method thereof
CN111911717A (en) * 2020-07-13 2020-11-10 江苏海基新能源股份有限公司 Fire extinguishing agent conveying pipe for lithium battery pack and preparation method thereof
CN112610757A (en) * 2020-12-18 2021-04-06 马荣哲 Corrosion-resistant HDPE double-wall corrugated pipe

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104311965A (en) * 2014-10-30 2015-01-28 安徽电信器材贸易工业有限责任公司 Special material with high tear resistance for communication optical cable protective sleeve and preparation method of special material
CN104455804A (en) * 2014-11-17 2015-03-25 苏州瑞邦塑胶有限公司 Plastic pipe
CN105156766A (en) * 2015-09-24 2015-12-16 江苏广通管业制造有限公司 Double-wall heat-preserving corrugated pipe
CN109506056A (en) * 2018-11-23 2019-03-22 永亨控股集团有限公司 Nanometer enhancing high density polyethylene (HDPE) spigot-and-socket double-wall corrugated pipe and production method
CN111873388A (en) * 2020-06-24 2020-11-03 安徽塑茂管道科技有限公司 Inner and outer ring cooling equipment for Krah pipe production and operation method thereof
CN111911717A (en) * 2020-07-13 2020-11-10 江苏海基新能源股份有限公司 Fire extinguishing agent conveying pipe for lithium battery pack and preparation method thereof
CN112610757A (en) * 2020-12-18 2021-04-06 马荣哲 Corrosion-resistant HDPE double-wall corrugated pipe
CN112610757B (en) * 2020-12-18 2022-07-26 康命源（贵州）科技发展有限公司 Corrosion-resistant HDPE double-wall corrugated pipe

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Application publication date: 20140521