CN113583324A - Special material for high-strength double-wall corrugated pipe and preparation method thereof - Google Patents
Special material for high-strength double-wall corrugated pipe and preparation method thereof Download PDFInfo
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- CN113583324A CN113583324A CN202110884782.XA CN202110884782A CN113583324A CN 113583324 A CN113583324 A CN 113583324A CN 202110884782 A CN202110884782 A CN 202110884782A CN 113583324 A CN113583324 A CN 113583324A
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- corrugated pipe
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- 239000000463 material Substances 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title abstract description 9
- -1 polyethylene Polymers 0.000 claims abstract description 16
- 239000011347 resin Substances 0.000 claims abstract description 16
- 229920005989 resin Polymers 0.000 claims abstract description 16
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 14
- 239000000945 filler Substances 0.000 claims abstract description 14
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 14
- 239000007822 coupling agent Substances 0.000 claims abstract description 13
- 239000004698 Polyethylene Substances 0.000 claims abstract description 12
- 229920000573 polyethylene Polymers 0.000 claims abstract description 12
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 12
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims abstract description 10
- 239000000049 pigment Substances 0.000 claims abstract description 10
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 9
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 9
- 239000000314 lubricant Substances 0.000 claims abstract description 9
- 239000002048 multi walled nanotube Substances 0.000 claims abstract description 9
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 7
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 7
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 7
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 5
- 239000011575 calcium Substances 0.000 claims abstract description 5
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims abstract description 5
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical group O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052901 montmorillonite Inorganic materials 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims abstract description 5
- 239000010456 wollastonite Substances 0.000 claims abstract description 5
- 229910052882 wollastonite Inorganic materials 0.000 claims abstract description 5
- 239000003365 glass fiber Substances 0.000 claims abstract description 3
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical group CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 8
- 239000006229 carbon black Substances 0.000 claims description 6
- 229920001912 maleic anhydride grafted polyethylene Polymers 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 4
- XCJYREBRNVKWGJ-UHFFFAOYSA-N copper(II) phthalocyanine Chemical compound [Cu+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 XCJYREBRNVKWGJ-UHFFFAOYSA-N 0.000 claims description 4
- 229920013716 polyethylene resin Polymers 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 229920003023 plastic Polymers 0.000 description 9
- 239000004033 plastic Substances 0.000 description 9
- 229920001903 high density polyethylene Polymers 0.000 description 6
- 239000004700 high-density polyethylene Substances 0.000 description 6
- 239000004594 Masterbatch (MB) Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 239000002052 molecular layer Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000002518 antifoaming agent Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- 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
Abstract
The invention discloses a special material for a high-strength double-wall corrugated pipe and a preparation method thereof, wherein the special material comprises the following raw materials in parts by weight: 40-60 parts of polyethylene, 16-24 parts of filler, 0.4-0.6 part of pigment, 4-6 parts of reinforcing synergist, 2-3 parts of compatilizer, 2-3 parts of lubricant, 0.8-1.2 parts of coupling agent, 0.5-1 part of antioxidant and 20-30 parts of reinforcing agent; wherein, the polyethylene is Yangzhi YEM-4902T resin, Daqing petrochemical 2480 resin and the like, the reinforcing agent is sericite, whisker, modified multi-wall carbon nano tube and glass fiber, the reinforcing synergist is modified talcum powder and modified wollastonite powder, and the filler is activated light calcium carbonate, activated heavy calcium, calcium sulfate, calcined kaolin and montmorillonite. The invention also discloses a preparation method of the special material for the high-strength double-wall corrugated pipe, and the high-strength double-wall corrugated pipe prepared from the material has good appearance and mechanical properties.
Description
Technical Field
The invention belongs to the technical field of plastic pipe materials, and particularly relates to a special material for a high-strength double-wall corrugated pipe and a preparation method thereof.
Background
China is a large producing and consuming country of plastic products, and particularly plastic pipelines occupy an extremely important position in national economic development. Plastic pipes are widely used in many industrial applications such as construction engineering, electric power engineering, municipal engineering, communication engineering, petrochemical engineering, etc., and are closely related to people's lives. The development field of the industry is not limited in the manufacturing aspect of plastic pipes, and various related fields such as plastic material modification research, formula system design, engineering installation and the like are derived, so that an integrated industry development situation which takes new material research and material modification as a source, plastic pipeline manufacturing as a center and engineering application as a rear shield is formed.
The double-wall corrugated pipe is mainly used for drainage and pollution discharge, is usually buried underground, and needs a pipe with certain ring stiffness and wear-resisting and corrosion-resisting properties, and the high-density polyethylene (HDPE) double-wall corrugated pipe is mainly produced by adding a proper amount of reinforcing function master batch, carbon black master batch and defoaming agent into HDPE new resin or adding a proper amount of reinforcing function master batch, carbon black master batch and defoaming agent into HDPE regenerated plastic particles at present. But the new HDPE resin is adopted, so that the cost is high; the pipe material made of the waste HDPE recycled plastic has poor physical properties and is relatively brittle. Therefore, how to reduce the material cost and improve the product quality, and simultaneously meet the use requirement of the double-wall corrugated pipe becomes the problem to be solved in the field.
Disclosure of Invention
The invention aims to make up for the defects of the prior art and provides a special material for a high-strength double-wall corrugated pipe and a preparation method thereof.
In order to achieve the above object, the present invention provides the following technical solutions:
a special material for a high-strength double-wall corrugated pipe comprises the following raw materials in parts by weight: 40-60 parts of polyethylene, 16-24 parts of filler, 0.4-0.6 part of pigment, 4-6 parts of reinforcing synergist, 2-3 parts of compatilizer, 2-3 parts of lubricant, 0.8-1.2 parts of coupling agent, 0.5-1 part of antioxidant and 20-30 parts of reinforcing agent;
wherein the polyethylene is selected from any one or two of Yangzhi YEM-4902T resin and Daqing petrochemical 2480 resin;
wherein the reinforcing agent is selected from one or more of modified sericite, modified whiskers, modified multi-wall carbon nanotubes and glass fibers;
wherein the reinforcing synergist is selected from one or two of modified talcum powder and modified wollastonite powder;
wherein, the filler is selected from one or more of active light calcium carbonate, active heavy calcium, calcium sulfate, calcined kaolin and montmorillonite.
Preferably, the modified sericite is gamma-methacryloxypropyltrimethoxysilane modified sericite.
Preferably, the modified multi-walled carbon nanotube is a gamma-methacryloxypropyltrimethoxysilane modified multi-walled carbon nanotube.
Preferably, the weight ratio of the reinforcing agent to the reinforcing synergist to the coupling agent to the filler is (20-30): (4-6): (0.8-1.2): (16-24).
Preferably, the compatilizer is maleic anhydride grafted polyethylene compatilizer.
Further, the pigment comprises high-pigment carbon black and phthalocyanine blue.
Preferably, the modified talcum powder is distearoyl isopropyl aluminate modified talcum powder.
Preferably, the weight ratio of the Yangzi YEM-4902T resin to the Daqing petrochemical 2480 resin in the polyethylene is 1: (0.9-1.1).
Preferably, the filler is at least one of activated light calcium carbonate, activated heavy calcium, calcium sulfate, calcined kaolin and montmorillonite.
The invention also provides a preparation method of the special material for the high-strength double-wall corrugated pipe, which comprises the following steps: adding the filler, the reinforcing agent and the reinforcing synergist into a high-speed mixer by using a coupling agent, mixing at a high speed for 30-60min, and heating through friction among materials to ensure that the coupling agent, the filler, the reinforcing agent and the reinforcing synergist fully react, so that an organic molecular layer is generated on the surface of the material under the chemical or physicochemical action and is changed into hydrophilic and organic by hydrophilic; after the reaction is finished, adding the compatilizer, the lubricant, the pigment and the antioxidant, uniformly mixing, adding the polyethylene resin, uniformly mixing, performing melt extrusion through a parallel co-rotating double-screw extruder set, and performing extrusion molding to obtain the special material for the high-strength double-wall corrugated pipe.
The special material for the high-strength double-wall corrugated pipe has the following advantages:
the high-strength double-wall corrugated pipe special material is produced by compounding multiple raw materials to form a double-wall corrugated pipe, the processing stability is good, the temperature and the screw torque are increased, the appearance of the produced pipe is better than that of a common corrugated pipe in the market, the mechanical property of the pipe is excellent, and the ring stiffness is as high as 15kN/m by taking a PEID600 pipe as an example2The ring flexibility is 30 percent without cracking, the bending elastic modulus reaches 2400Mpa and the impact strength is 15kJ/m according to the test of GB/T1040 standard2And has better use value.
Detailed Description
The technical scheme of the invention is further explained by combining the specific examples as follows:
example 1
A special material for a high-strength double-wall corrugated pipe comprises the following raw materials in parts by weight: 50 parts of polyethylene, 20 parts of active light calcium carbonate, 0.5 part of high-color carbon black, 5 parts of distearoyl isopropyl aluminate modified talcum powder, 2.5 parts of maleic anhydride grafted polyethylene compatilizer, 2.5 parts of lubricant, 1 part of coupling agent, 0.8 part of antioxidant and 25 parts of gamma-methacryloxypropyl trimethoxy silane modified sericite;
the polyethylene is prepared from Yangzi petrochemical YEM-4902T resin and Daqing petrochemical 2480 resin according to a weight ratio of 1: 1 are mixed to obtain the product.
The preparation method of the special material for the high-strength double-wall corrugated pipe comprises the following steps: adding active light calcium carbonate, gamma-methacryloxypropyltrimethoxysilane modified sericite and distearoyl isopropyl aluminate modified talcum powder into a high-speed mixer by using a coupling agent, mixing for 45min at a high speed, raising the temperature by friction among materials to enable the components to react fully, generating an organic molecular layer on the surface by chemical or physicochemical action, and changing the hydrophilicity into the hydrophilicity; after the reaction is finished, adding the maleic anhydride grafted polyethylene compatilizer, the lubricant, the high-pigment carbon black and the antioxidant, uniformly mixing, adding the polyethylene resin, uniformly mixing, performing melt extrusion through a parallel co-rotating double-screw extruder set, and performing extrusion molding to obtain the special material for the high-strength double-wall corrugated pipe.
Example 2
A special material for a high-strength double-wall corrugated pipe comprises the following raw materials in parts by weight: 40 parts of polyethylene, 16 parts of calcined kaolin, 0.4 part of phthalocyanine blue, 4 parts of modified wollastonite powder, 2 parts of maleic anhydride grafted polyethylene compatilizer, 2 parts of lubricant, 0.8 part of coupling agent, 0.5 part of antioxidant and 20 parts of gamma-methacryloxypropyltrimethoxysilane modified multi-walled carbon nanotube;
wherein the polyethylene is prepared from Yangzi YEM-4902T resin and Daqing petrochemical 2480 resin according to a weight ratio of 1: 0.9 mixing to obtain the product.
The invention also provides a preparation method of the special material for the high-strength double-wall corrugated pipe, which comprises the following steps: adding calcined kaolin, gamma-methacryloxypropyltrimethoxysilane modified multi-walled carbon nanotubes and modified wollastonite powder into a high-speed mixer by using a coupling agent, mixing at a high speed for 60min, heating by friction among materials to enable the components to react fully, generating an organic molecular layer on the surface of the organic molecular layer by chemical or physicochemical action, and changing the hydrophilic property into the hydrophilic property; after the reaction is finished, adding the maleic anhydride grafted polyethylene compatilizer, the lubricant, the phthalocyanine blue and the antioxidant, uniformly mixing, adding the polyethylene resin, uniformly mixing, performing melt extrusion through a parallel co-rotating double-screw extruder set, and performing extrusion molding to obtain the special material for the high-strength double-wall corrugated pipe.
The properties of the materials obtained in example 1 and example 2 were measured, and the results are shown in table 1:
TABLE 1
| Detecting items | Test standard | Example 1 | Example 2 |
| Notched impact J/m | ASTM D256 | 16.6 | 17.5 |
| Melt flow rate (190 ℃, 2.16 Kg) g/10min | ASTM D1238 | 0.3 | 0.3 |
| Density g/cm3 | ASTM D792 | 1.301 | 1.252 |
| Flexural modulus MPa | GB/T9341 | 2562 | 2495 |
| Bending strength MPa | GB/T9341 | 34.2 | 33.8 |
| Tensile strength MPa | ASTM D638 | 22.75 | 22.66 |
As can be seen from the above table, the special material for the high-strength double-wall corrugated pipe has good processability and high mechanical property.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The special material for the high-strength double-wall corrugated pipe is characterized by comprising the following raw materials in parts by weight: 40-60 parts of polyethylene, 16-24 parts of filler, 0.4-0.6 part of pigment, 4-6 parts of reinforcing synergist, 2-3 parts of compatilizer, 2-3 parts of lubricant, 0.8-1.2 parts of coupling agent, 0.5-1 part of antioxidant and 20-30 parts of reinforcing agent;
wherein the polyethylene is selected from any one or two of Yangzhi YEM-4902T resin and Daqing petrochemical 2480 resin;
wherein the reinforcing agent is selected from one or more of modified sericite, modified whiskers, modified multi-wall carbon nanotubes and glass fibers;
wherein the reinforcing synergist is selected from one or two of modified talcum powder and modified wollastonite powder;
wherein, the filler is selected from one or more of active light calcium carbonate, active heavy calcium, calcium sulfate, calcined kaolin and montmorillonite.
2. The special material for the high-strength double-wall corrugated pipe as claimed in claim 1, wherein the modified sericite is gamma-methacryloxypropyltrimethoxysilane modified sericite.
3. The special material for the high-strength double-wall corrugated pipe as claimed in claim 1, wherein the modified multi-wall carbon nanotube is gamma-methacryloxypropyltrimethoxysilane modified multi-wall carbon nanotube.
4. The special material for the high-strength double-wall corrugated pipe as claimed in claim 1, wherein the weight ratio of the reinforcing agent, the reinforcing synergist, the coupling agent and the filler is (20-30): (4-6): (0.8-1.2): (16-24).
5. The special material for the high-strength double-wall corrugated pipe as claimed in claim 1, wherein the compatibilizer is maleic anhydride grafted polyethylene compatibilizer.
6. The special material for high-strength double-wall corrugated pipe as claimed in claim 1, wherein the pigment comprises high-pigment carbon black and phthalocyanine blue.
7. The special material for the high-strength double-wall corrugated pipe as claimed in claim 1, wherein the modified talc powder is distearoyl isopropyl aluminate modified talc powder.
8. The special material for the high-strength double-wall corrugated pipe as claimed in claim 1, wherein the weight ratio of polyethylene medium-Yangzi YEM-4902T resin to Daqing petrochemical 2480 resin is 1: (0.9-1.1).
9. The special material for the high-strength double-wall corrugated pipe as claimed in claim 1, wherein the filler is at least one of activated light calcium carbonate, activated heavy calcium, calcium sulfate, calcined kaolin and montmorillonite.
10. A method for preparing a special material for high-strength double-wall corrugated pipe according to any one of claims 1 to 9, comprising the following steps: adding the filler, the reinforcing agent and the reinforcing synergist into a high-speed mixer by using a coupling agent, mixing at a high speed for 30-60min, heating through friction among materials to enable the coupling agent to fully react with the filler, the reinforcing agent and the reinforcing synergist, adding the compatilizer, the lubricant, the pigment and the antioxidant after the reaction is finished, uniformly mixing, adding polyethylene resin, uniformly mixing, carrying out melt extrusion by a parallel co-rotating twin-screw extruder set, and carrying out extrusion molding to obtain the high-strength double-wall corrugated pipe special material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110884782.XA CN113583324A (en) | 2021-08-03 | 2021-08-03 | Special material for high-strength double-wall corrugated pipe and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110884782.XA CN113583324A (en) | 2021-08-03 | 2021-08-03 | Special material for high-strength double-wall corrugated pipe and preparation method thereof |
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| CN113583324A true CN113583324A (en) | 2021-11-02 |
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| CN202110884782.XA Pending CN113583324A (en) | 2021-08-03 | 2021-08-03 | Special material for high-strength double-wall corrugated pipe and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114409986A (en) * | 2021-12-28 | 2022-04-29 | 浙江中财型材有限责任公司 | HDPE corrugated pipe and preparation method thereof |
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| CN101190979A (en) * | 2006-11-27 | 2008-06-04 | 天津德昊超微新材料有限公司 | Special-purpose material for polyethylene double-wall corrugated pipe |
| CN104448488A (en) * | 2014-12-01 | 2015-03-25 | 吉林省松花湖管业有限公司 | Fiber reinforced polyethylene pipeline material |
| CN110724332A (en) * | 2018-07-16 | 2020-01-24 | 中国石油化工股份有限公司 | Polyethylene composition with excellent comprehensive performance for double-wall corrugated pipe and preparation method thereof |
| CN112592527A (en) * | 2020-12-24 | 2021-04-02 | 四川兰晨管业有限公司 | Polyethylene double-wall corrugated pipe and preparation method thereof |
| CN112831113A (en) * | 2021-01-07 | 2021-05-25 | 天津永高塑业发展有限公司 | Special material for outer wall of polyethylene double-wall corrugated pipe with high flexural modulus and high oxidation induction time and preparation method thereof |
-
2021
- 2021-08-03 CN CN202110884782.XA patent/CN113583324A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101190979A (en) * | 2006-11-27 | 2008-06-04 | 天津德昊超微新材料有限公司 | Special-purpose material for polyethylene double-wall corrugated pipe |
| CN104448488A (en) * | 2014-12-01 | 2015-03-25 | 吉林省松花湖管业有限公司 | Fiber reinforced polyethylene pipeline material |
| CN110724332A (en) * | 2018-07-16 | 2020-01-24 | 中国石油化工股份有限公司 | Polyethylene composition with excellent comprehensive performance for double-wall corrugated pipe and preparation method thereof |
| CN112592527A (en) * | 2020-12-24 | 2021-04-02 | 四川兰晨管业有限公司 | Polyethylene double-wall corrugated pipe and preparation method thereof |
| CN112831113A (en) * | 2021-01-07 | 2021-05-25 | 天津永高塑业发展有限公司 | Special material for outer wall of polyethylene double-wall corrugated pipe with high flexural modulus and high oxidation induction time and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114409986A (en) * | 2021-12-28 | 2022-04-29 | 浙江中财型材有限责任公司 | HDPE corrugated pipe and preparation method thereof |
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