CN112080056A - Preparation method of corrosion-resistant PE pipeline - Google Patents

Preparation method of corrosion-resistant PE pipeline Download PDF

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Publication number
CN112080056A
CN112080056A CN202010907832.7A CN202010907832A CN112080056A CN 112080056 A CN112080056 A CN 112080056A CN 202010907832 A CN202010907832 A CN 202010907832A CN 112080056 A CN112080056 A CN 112080056A
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corrosion
pipeline
polyethylene
speed
corrosion resistant
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钱根
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Suzhou Jiyuan Pipe Industry Co ltd
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Suzhou Jiyuan Pipe Industry Co ltd
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions 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
    • C08L23/04Homopolymers or copolymers of ethene
    • C08L23/06Polyethene
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • C08K2003/2289Oxides; Hydroxides of metals of cobalt
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24Acids; Salts thereof
    • C08K3/26Carbonates; Bicarbonates
    • C08K2003/265Calcium, strontium or barium carbonate
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/30Sulfur-, selenium- or tellurium-containing compounds
    • C08K2003/3009Sulfides
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/011Nanostructured additives
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00Applications
    • C08L2203/18Applications used for pipes

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

A preparation method of an anti-corrosion PE pipeline comprises the following preparation steps: (1) adding calcium carbonate powder into a high-speed kneading machine, activating by using aluminate and then granulating; (2) adding polyethylene, CoO loaded on Pt, Sialon and molybdenum disulfide, and uniformly stirring at a high speed; (3) adding into a high-speed kneader, kneading at a rotation speed of 1500r/min for 5-10min, and discharging; (4) the material is sent to a double-screw extruder and extruded and molded at the processing temperature of 200-210 ℃ to prepare the anti-corrosion PE pipeline. The corrosion-resistant PE pipeline has good mechanical property and strong corrosion resistance, and is suitable for application of municipal pipeline materials.

Description

Preparation method of corrosion-resistant PE pipeline
Technical Field
The invention belongs to the field of materials, and particularly relates to a preparation method of an anti-corrosion PE pipeline.
Background
With the wide application of polyethylene pipelines in water supply and drainage and gas pipe network construction in cities and towns in China, the polyethylene pipelines gradually become remarkable achievements in various fields of social production. Compared with the traditional steel and cement pipelines, the polyethylene pipeline has the characteristics of easy installation, good flexibility, excellent processing performance, environmental protection, safety and the like. However, if the polyethylene pipe is used as a chemical pipe, the corrosion resistance is still far from enough, and the polyethylene pipe can be discolored, cracked, embrittled or pulverized under the corrosion of chemicals, so that the mechanical property of the polyethylene pipe is lost.
The polyethylene pipeline in China is developed rapidly from the 80 s in the 20 th century, and the polyethylene pipeline is mainly focused on the optimization design of mechanical properties, the efficiency of a pipeline extrusion production line, the size of the extruded pipeline and the like at present. In the period, the novel polyethylene resin with high stress cracking resistance enters the market, the production process of high-efficiency pipeline extrusion is available, and the extrusion speed can reach more than one metric ton per hour. These developments play an important role in public areas such as plumbing, gas pipelines, and the like. As a drainage pipeline, the corrosion resistance of the current polyethylene pipeline is still poor, so that the improvement of the corrosion resistance has important significance for the cost and the prospect of the whole market.
Disclosure of Invention
The technical problem to be solved is as follows: the invention aims to provide an anti-corrosion PE pipeline and a preparation method thereof, and the prepared anti-corrosion PE pipeline has good mechanical property and anti-corrosion effect and is suitable for application of municipal pipeline materials.
The technical scheme is as follows: a corrosion resistant PE pipe comprises pretreated polyethylene, CoO loaded on Pt and Sialon.
Further, the thickness of the corrosion-resistant PE pipeline is 2-4 cm.
Further, the CoO size of the CoO supported on Pt is < 3.2 nm.
Further, the pretreatment method of the pretreated polyethylene comprises the following steps:
(1) washing polyethylene by adopting ethanol with the concentration of 90% to remove surface impurities;
(2) after drying, adding alkylphenol ethoxylates and water, and treating for 1-48h under the ultrasonic condition of 20-100kHz and the temperature of 30-60 ℃;
(3) adding a dispersing agent, and dispersing the mixed solution for 1-3min at the rotating speed of 500-.
Further, molybdenum disulfide, calcium carbonate and aluminate are included.
Further, the polyethylene: water: the mass ratio of the alkylphenol polyoxyethylene is 10:10-30: 10-13.
Further, the dispersing agent is one or more of fatty alcohol polyoxyethylene ether methylsilane, oleic acid polyoxyethylene ester, sodium carboxymethylcellulose, sodium alkyl diphenyl ether sulfonate, methylcellulose, tween-80 and sodium hexametaphosphate.
Further, the preparation method of the corrosion-resistant PE pipeline comprises the following steps:
(1) adding calcium carbonate powder into a high-speed kneading machine, activating by using aluminate and then granulating;
(2) adding polyethylene, CoO loaded on Pt, Sialon and molybdenum disulfide, and uniformly stirring at a high speed;
(3) adding into a high-speed kneader, kneading at a rotation speed of 1500r/min for 5-10min, and discharging;
(4) the material is sent to a double-screw extruder and extruded and molded at the processing temperature of 200-210 ℃ to prepare the anti-corrosion PE pipeline.
Has the advantages that:
1. the invention adopts CoO particles with the size of less than 3.2nm and coordinated unsaturated Co at the boundaryThe dissociation of O occurs with the overall reconstruction, and the dissociated oxygen atoms are stabilized at the boundary and hardly penetrate into the interface between CoO and Pt, thereby slowing down the corrosion effect.
2. The corrosion-resistant PE pipeline provided by the invention has good mechanical property and strong corrosion resistance, and is suitable for application of municipal pipeline materials.
Detailed Description
Example 1
A preparation method of a corrosion-resistant PE pipeline comprises the following steps:
(1) washing polyethylene by adopting ethanol with the concentration of 90% to remove surface impurities;
(2) and (2) adding alkylphenol polyoxyethylene and water after drying, and treating for 1h under the ultrasonic condition of the temperature of 30 ℃ and 20kHz, wherein the weight ratio of polyethylene: water: the mass ratio of the alkylphenol polyoxyethylene is 10:10: 13;
(3) adding fatty alcohol-polyoxyethylene ether methylsilane, oleic acid polyoxyethylene ester, sodium carboxymethylcellulose, sodium alkyl diphenyl ether sulfonate, methylcellulose, tween-80 and sodium hexametaphosphate, and dispersing the mixed solution at the rotation speed of 500r/min for 1min to obtain pretreated polyethylene;
(4) adding calcium carbonate powder into a high-speed kneading machine, activating by using aluminate and then granulating;
(5) adding polyethylene, CoO loaded on Pt, Sialon and molybdenum disulfide, and uniformly stirring at a high speed;
(6) adding into a high-speed kneader, kneading at the rotating speed of 1500r/min for 5min, and discharging;
(7) and (3) feeding the materials into a double-screw extruder, and extruding and molding at the processing temperature of 200 ℃ to prepare the corrosion-resistant PE pipeline, wherein the thickness of the pipeline is 2 cm.
Example 2
A preparation method of a corrosion-resistant PE pipeline comprises the following steps:
(1) washing polyethylene by adopting ethanol with the concentration of 90% to remove surface impurities;
(2) and (2) adding alkylphenol polyoxyethylene and water after drying, and treating for 20 hours under the ultrasonic condition of the temperature of 45 ℃ and 60kHz, wherein the weight ratio of polyethylene: water: the mass ratio of the alkylphenol polyoxyethylene is 10:20: 11;
(3) adding fatty alcohol-polyoxyethylene ether methylsilane, oleic acid polyoxyethylene ester, sodium carboxymethylcellulose, sodium alkyl diphenyl ether sulfonate, methylcellulose, tween-80 and sodium hexametaphosphate, and dispersing the mixed solution at the rotation speed of 700r/min for 2min to obtain pretreated polyethylene;
(4) adding calcium carbonate powder into a high-speed kneading machine, activating by using aluminate and then granulating;
(5) adding polyethylene, CoO loaded on Pt, Sialon and molybdenum disulfide, and uniformly stirring at a high speed;
(6) adding into a high-speed kneader, kneading at the rotating speed of 1500r/min for 8min, and discharging;
(7) and (3) feeding the materials into a double-screw extruder, and extruding and molding at the processing temperature of 205 ℃ to prepare the corrosion-resistant PE pipeline, wherein the thickness of the pipeline is 3 cm.
Example 3
A preparation method of a corrosion-resistant PE pipeline comprises the following steps:
(1) washing polyethylene by adopting ethanol with the concentration of 90% to remove surface impurities;
(2) and (2) adding alkylphenol polyoxyethylene and water after drying, and treating for 35 hours under the ultrasonic condition of 50 ℃ and 80kHz, wherein the weight ratio of polyethylene: water: the mass ratio of the alkylphenol polyoxyethylene is 10:25: 12;
(3) adding fatty alcohol-polyoxyethylene ether methylsilane, oleic acid polyoxyethylene ester, sodium carboxymethylcellulose, sodium alkyl diphenyl ether sulfonate, methylcellulose, tween-80 and sodium hexametaphosphate, and dispersing the mixed solution at the rotation speed of 800r/min for 2min to obtain pretreated polyethylene;
(4) adding calcium carbonate powder into a high-speed kneading machine, activating by using aluminate and then granulating;
(5) adding polyethylene, CoO loaded on Pt, Sialon and molybdenum disulfide, and uniformly stirring at a high speed;
(6) adding into a high-speed kneader, kneading at the rotating speed of 1500r/min for 8min, and discharging;
(7) and (3) feeding the materials into a double-screw extruder, and extruding and molding at the processing temperature of 205 ℃ to prepare the corrosion-resistant PE pipeline, wherein the thickness of the pipeline is 3 cm.
Example 4
A preparation method of a corrosion-resistant PE pipeline comprises the following steps:
(1) washing polyethylene by adopting ethanol with the concentration of 90% to remove surface impurities;
(2) and (2) adding alkylphenol polyoxyethylene and water after drying, and treating for 48 hours at the temperature of 60 ℃ under the ultrasonic condition of 100kHz, wherein the weight ratio of polyethylene: water: the mass ratio of the alkylphenol polyoxyethylene is 10:30: 10;
(3) adding fatty alcohol-polyoxyethylene ether methylsilane, oleic acid polyoxyethylene ester, sodium carboxymethylcellulose, sodium alkyl diphenyl ether sulfonate, methylcellulose, tween-80 and sodium hexametaphosphate, and dispersing the mixed solution at the rotation speed of 1000r/min for 3min to obtain pretreated polyethylene;
(4) adding calcium carbonate powder into a high-speed kneading machine, activating by using aluminate and then granulating;
(5) adding polyethylene, CoO loaded on Pt, Sialon and molybdenum disulfide, and uniformly stirring at a high speed;
(6) adding the mixture into a high-speed kneader, kneading the mixture for 10min at the rotating speed of 1500r/min, and discharging the mixture;
(7) and (3) feeding the materials into a double-screw extruder, and extruding and molding at the processing temperature of 210 ℃ to prepare the corrosion-resistant PE pipeline, wherein the thickness of the pipeline is 4 cm.
The tensile strength was measured using GB/T1447-.
The impact strength was measured in GB/T1451-2005.
The corrosion resistance is measured by adopting the standard GB/T11547-. The results are shown in Table 1.
TABLE 1
Figure 281780DEST_PATH_IMAGE001

Claims (8)

1. A corrosion resistant PE pipe, characterized by: including pretreated polyethylene, CoO supported on Pt, and Sialon.
2. A corrosion resistant PE pipe according to claim 1, wherein: the thickness of the corrosion-resistant PE pipeline is 2-4 cm.
3. A corrosion resistant PE pipe according to claim 1, wherein: the CoO size of the CoO supported on Pt is less than 3.2 nm.
4. A corrosion resistant PE pipe according to claim 1, wherein: the pretreatment method of the pretreated polyethylene comprises the following steps:
(1) washing polyethylene by adopting ethanol with the concentration of 90% to remove surface impurities;
(2) after drying, adding alkylphenol ethoxylates and water, and treating for 1-48h under the ultrasonic condition of 20-100kHz and the temperature of 30-60 ℃;
(3) adding a dispersing agent, and dispersing the mixed solution for 1-3min at the rotating speed of 500-.
5. A corrosion resistant PE pipe according to claim 1, wherein: also comprises molybdenum disulfide, calcium carbonate and aluminate.
6. A corrosion resistant PE pipe according to claim 4, wherein: the polyethylene: water: the mass ratio of the alkylphenol polyoxyethylene is 10:10-30: 10-13.
7. A corrosion resistant PE pipe according to claim 4, wherein: the dispersing agent is one or more of fatty alcohol polyoxyethylene ether methyl silane, oleic acid polyoxyethylene ester, sodium carboxymethyl cellulose, sodium alkyl diphenyl ether sulfonate, methyl cellulose, tween-80 and sodium hexametaphosphate.
8. The method of claim 5, wherein the method comprises the steps of: the method comprises the following steps:
(1) adding calcium carbonate powder into a high-speed kneading machine, activating by using aluminate and then granulating;
(2) adding polyethylene, CoO loaded on Pt, Sialon and molybdenum disulfide, and uniformly stirring at a high speed;
(3) adding into a high-speed kneader, kneading at a rotation speed of 1500r/min for 5-10min, and discharging;
(4) the material is sent to a double-screw extruder and extruded and molded at the processing temperature of 200-210 ℃ to prepare the anti-corrosion PE pipeline.
CN202010907832.7A 2020-09-02 2020-09-02 Preparation method of corrosion-resistant PE pipeline Pending CN112080056A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101585941A (en) * 2008-05-23 2009-11-25 乐少兵 Ultra-high molecular weight polyethylene product
CN102875885A (en) * 2012-10-18 2013-01-16 合肥安诺新型建材有限公司 PE-RT (polyethylene of raised temperature resistance) floor heating pipe material and preparation method thereof
CN103881182A (en) * 2012-12-20 2014-06-25 青岛欣展塑胶有限公司 Flame-retardant antistatic master batch used for polyethylene tubes, and its preparation method
CN105131385A (en) * 2015-07-29 2015-12-09 天津金发新材料有限公司 High-oxygen barrier property high-strength polyolefin heat conduction pipe and preparation method thereof
CN106498791A (en) * 2016-10-21 2017-03-15 江南大学 A kind of pretreatment process for dispersing of superhigh molecular weight polyethylene fibers
CN111117041A (en) * 2020-01-15 2020-05-08 江苏新奥碳纳米材料应用技术研究院有限公司 Graphene modified oxygen-resistant polyethylene master batch and preparation method and application thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101585941A (en) * 2008-05-23 2009-11-25 乐少兵 Ultra-high molecular weight polyethylene product
CN102875885A (en) * 2012-10-18 2013-01-16 合肥安诺新型建材有限公司 PE-RT (polyethylene of raised temperature resistance) floor heating pipe material and preparation method thereof
CN103881182A (en) * 2012-12-20 2014-06-25 青岛欣展塑胶有限公司 Flame-retardant antistatic master batch used for polyethylene tubes, and its preparation method
CN105131385A (en) * 2015-07-29 2015-12-09 天津金发新材料有限公司 High-oxygen barrier property high-strength polyolefin heat conduction pipe and preparation method thereof
CN106498791A (en) * 2016-10-21 2017-03-15 江南大学 A kind of pretreatment process for dispersing of superhigh molecular weight polyethylene fibers
CN111117041A (en) * 2020-01-15 2020-05-08 江苏新奥碳纳米材料应用技术研究院有限公司 Graphene modified oxygen-resistant polyethylene master batch and preparation method and application thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"纳米粒子氧化机理新发现为发展抗腐蚀材料"另辟蹊径"", 《表面工程与再制造》 *

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Application publication date: 20201215