CN113105687A - Steel wire mesh reinforced polyethylene composite pipe for water supply and production method thereof - Google Patents

Steel wire mesh reinforced polyethylene composite pipe for water supply and production method thereof Download PDF

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Publication number
CN113105687A
CN113105687A CN202110490550.6A CN202110490550A CN113105687A CN 113105687 A CN113105687 A CN 113105687A CN 202110490550 A CN202110490550 A CN 202110490550A CN 113105687 A CN113105687 A CN 113105687A
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China
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polyethylene
wire mesh
steel wire
layer
composite pipe
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CN202110490550.6A
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Chinese (zh)
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陈华兵
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Yichang Yishuo Plastics Co ltd
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Yichang Yishuo Plastics Co ltd
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Priority to CN202110490550.6A priority Critical patent/CN113105687A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B29C48/151Coating hollow articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/92Measuring, controlling or regulating
    • 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00Hoses, i.e. flexible pipes
    • F16L11/04Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/08Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00Rigid pipes
    • F16L9/14Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
    • F16L9/147Compound 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/92704Temperature
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/0005Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
    • B29K2105/0011Biocides
    • 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

Abstract

The invention relates to the technical field of pipes, and discloses a steel wire mesh reinforced polyethylene composite pipe for water supply and a production method thereof. The invention discloses a steel wire mesh reinforced polyethylene composite pipe for water supply, which sequentially comprises a polyethylene inner layer, a first bonding resin layer, a steel wire mesh reinforcing layer, a second bonding resin layer and a polyethylene outer layer from inside to outside, wherein the steel wire mesh reinforcing layer is formed by spirally winding a plurality of steel wires; the polyethylene inner layer comprises the following components in parts by weight: 80-100 parts of polyethylene and 2-10 parts of polyamide. The invention has the characteristic of strong composite stability among all layers of the steel wire mesh reinforced polyethylene composite pipe.

Description

Steel wire mesh reinforced polyethylene composite pipe for water supply and production method thereof
Technical Field
The invention relates to the technical field of pipes, in particular to a steel wire mesh reinforced polyethylene composite pipe for water supply and a production method thereof.
Background
A composite steel wire net reinforced polyethylene pipe is prepared from polyethylene as basic body, steel wire coated by adhesive resin, and netted skeleton formed by spirally winding steel wire to form reinforcing body. The adhesive resin is a hot melt adhesive which is generally modified by polyethylene, can be melted by heating and can adhere different materials (including metal materials such as plastics, steel materials, aluminum materials, copper materials and the like and non-metal materials). The steel wire mesh reinforced polyethylene composite pipe overcomes the defects of a steel pipe and a plastic pipe, keeps the advantages of the steel pipe and the plastic pipe, and has the advantages of good creep resistance, high lasting mechanical strength, good temperature resistance, good rigidity and impact resistance, good dimensional stability, moderate flexibility, good rigidity and flexibility, small thermal expansion coefficient and the like.
Disclosure of Invention
The invention aims to provide a steel wire mesh reinforced polyethylene composite pipe for water supply and a production method thereof, and the steel wire mesh reinforced polyethylene composite pipe has the characteristic of strong composite stability among layers.
The technical purpose of the invention is realized by the following technical scheme: a steel wire mesh reinforced polyethylene composite pipe for water supply sequentially comprises a polyethylene inner layer, a first bonding resin layer, a steel wire mesh reinforcing layer, a second bonding resin layer and a polyethylene outer layer from inside to outside, wherein the steel wire mesh reinforcing layer is formed by spirally winding a plurality of steel wires;
the polyethylene inner layer comprises the following components in parts by weight: 80-100 parts of polyethylene and 2-10 parts of polyamide.
By adopting the technical scheme, the polyamide has the advantages of mechanical property, heat resistance, wear resistance, chemical resistance and self-lubricity, low friction coefficient, certain flame retardance and easiness in processing. The polyamide is added into the polyethylene inner layer, so that the compression resistance of the polyethylene inner layer is enhanced, the aging of the polyethylene inner layer is delayed, and the molecular acting force among the bonding resins is improved, so that the adhesion effect among the polyethylene outer layer, the second bonding resin layer, the steel wire mesh reinforcing layer, the first bonding resin layer, the polyethylene inner layer and the polyethylene outer layer is improved, the steel wire mesh reinforced polyethylene composite pipe is not easy to peel off among all layers, is not easy to crack, is more stable, and is improved in toughness. Meanwhile, the polyamide has good heat resistance, so that the heat resistance of the inner polyethylene layer can be improved, the application range of the steel wire mesh reinforced polyethylene composite pipe is enlarged, and the steel wire mesh reinforced polyethylene composite pipe can be normally used at a higher temperature or a lower temperature.
The invention is further provided with: the polyethylene inner layer further comprises 0.2-5 parts of ethyl vanillin according to the parts by weight.
By adopting the technical scheme, the ethyl vanillin has the effects of sterilization, antibiosis and the like, the polyethylene inner layer contains the ethyl vanillin, so that the breeding of bacteria, algae and the like on the pipe wall of the polyethylene inner layer can be reduced, the sanitation and cleanness of the polyethylene inner layer are improved, the water quality of the conveying water is improved, the conveying water is not easily polluted by the bacteria, the algae and the like, and the water use safety is improved. Meanwhile, the ethyl vanillin has aldehyde groups, hydroxyl groups and ethoxy groups, so that intermolecular acting force is easily formed between the ethyl vanillin and the first bonding resin layer, the adhesion effect between the polyethylene inner layer and the first bonding resin layer is enhanced, namely, the adhesion effect between the polyethylene inner layer and the steel wire mesh reinforcing layer is enhanced, the stability between the steel wire mesh reinforcing polyethylene composite pipe layers is improved, and the pressure resistance of the steel wire mesh reinforcing polyethylene composite pipe is improved.
The invention is further provided with: the polyethylene inner layer further comprises 0.2-5 parts of polydimethylsiloxane by weight.
By adopting the technical scheme, the polydimethylsiloxane has a good defoaming effect, the compact arrangement among inner polyethylene layers is improved, and meanwhile, the polydimethylsiloxane has certain viscosity, so that the adhesion effect among the inner polyethylene layers, the first bonding resin layer and the steel wire mesh reinforcing layer can be enhanced, the stability among all layers of the steel wire mesh reinforced polyethylene composite pipe is improved, the service life of the steel wire mesh reinforced polyethylene composite pipe is prolonged, and the compressive strength of the steel wire mesh reinforced polyethylene composite pipe is enhanced.
The invention is further provided with: the polyethylene inner layer further comprises 1-5 parts of vinyl triethoxysilane by mass.
By adopting the technical scheme, the vinyltriethoxysilane serving as a common silane coupling agent can be chemically bonded (coupled) with both organic materials and inorganic materials due to the chemical structure of the vinyltriethoxysilane. Therefore, the addition of the vinyl triethoxysilane enhances the bonding effect between the polyethylene inner layer and the first bonding resin layer as well as the steel wire mesh reinforcement layer, and improves the stability between the steel wire mesh reinforcement polyethylene composite pipe layers.
Meanwhile, as the polydimethylsiloxane has fluidity, the vinyltriethoxy silicon can be chemically bonded (coupled) with the polydimethylsiloxane while the defoaming effect of the polydimethylsiloxane is not influenced, so that the position stability between the polydimethylsiloxane and each component of the polyethylene inner layer is enhanced, namely the compression resistance of the polyethylene inner layer is enhanced, and the compression strength of the polyethylene composite pipe enhanced by the steel wire mesh is improved.
The invention is further provided with: the polyethylene outer layer comprises the following components in parts by weight: 80-100 parts of polyethylene and 1-5 parts of vinyl triethoxysilane.
By adopting the technical scheme, the vinyltriethoxysilane serving as a common silane coupling agent can be chemically bonded (coupled) with both organic materials and inorganic materials due to the chemical structure of the vinyltriethoxysilane. Therefore, the addition of the vinyltriethoxysilane enhances the bonding effect between the polyethylene outer layer and the second bonding resin layer as well as the steel wire mesh reinforcing layer, improves the stability among all layers of the steel wire mesh reinforced polyethylene composite pipe, and enhances the compressive strength of the steel wire mesh reinforced polyethylene composite pipe.
The invention also provides a production method of the steel wire mesh reinforced polyethylene composite pipe for water supply, which comprises the following steps:
s1, selecting polyethylene inner layer raw materials, polyethylene outer layer raw materials, bonding resin, steel wires and an extruder according to the proportion;
s2, selecting polyethylene inner layer raw materials according to a proportion, and extruding a polyethylene pipe I through an extruder to form a polyethylene inner layer;
s3, extruding a first adhesive resin layer on the outer surface of the polyethylene inner layer;
s4, forming a steel wire mesh reinforced layer on the first bonding resin layer;
s5, extruding a second bonding resin layer on the outer surface of the steel wire mesh reinforcing layer;
and S6, selecting the polyethylene outer layer raw material according to the proportion, and extruding the polyethylene outer layer on the outer surface of the second adhesive resin layer through an extruder.
The invention is further provided with: the extrusion temperature of the first bonding resin layer and the second bonding resin layer is 200-260 ℃.
The invention is further provided with: the extrusion temperature of the polyethylene inner layer is 200-280 ℃.
The invention is further provided with: the extrusion temperature of the polyethylene outer layer is 180-240 ℃.
The invention has the beneficial effects that:
1. the polyamide is added into the polyethylene inner layer, so that the compression resistance of the polyethylene inner layer is enhanced, the aging of the polyethylene inner layer is delayed, and the molecular acting force among the bonding resins is improved, so that the adhesion effect among the polyethylene outer layer, the second bonding resin layer, the steel wire mesh reinforcing layer, the first bonding resin layer, the polyethylene inner layer and the polyethylene outer layer is improved, the steel wire mesh reinforced polyethylene composite pipe is not easy to peel off among all layers, is not easy to crack, is more stable, and is improved in toughness. Meanwhile, the polyamide has good heat resistance, so that the heat resistance of the inner polyethylene layer can be improved, the application range of the steel wire mesh reinforced polyethylene composite pipe is enlarged, and the steel wire mesh reinforced polyethylene composite pipe can be normally used at a higher temperature or a lower temperature.
2. The ethyl vanillin has the effects of sterilization, antibiosis and the like, the polyethylene inner layer contains the ethyl vanillin, so that the breeding of bacteria, algae and the like on the pipe wall of the polyethylene inner layer can be reduced, the sanitation and cleanness of the polyethylene inner layer are improved, the water quality of the conveying water is improved, the conveying water is not easily polluted by the bacteria, the algae and the like, and the water safety is improved. Meanwhile, the ethyl vanillin has aldehyde groups, hydroxyl groups and ethoxy groups, so that intermolecular acting force is easily formed between the ethyl vanillin and the first bonding resin layer, the adhesion effect between the polyethylene inner layer and the first bonding resin layer is enhanced, namely, the adhesion effect between the polyethylene inner layer and the steel wire mesh reinforcing layer is enhanced, the stability between the steel wire mesh reinforcing polyethylene composite pipe layers is improved, and the pressure resistance of the steel wire mesh reinforcing polyethylene composite pipe is improved.
3. The polydimethylsiloxane has a good defoaming effect, the compact arrangement among polyethylene inner-layer molecules is improved, meanwhile, the polydimethylsiloxane has certain viscosity, the adhesion effect among the polyethylene inner layer, the first bonding resin layer and the steel wire mesh reinforcing layer can be enhanced, the stability among all layers of the steel wire mesh reinforced polyethylene composite pipe is improved, the service life of the steel wire mesh reinforced polyethylene composite pipe is prolonged, and the compressive strength of the steel wire mesh reinforced polyethylene composite pipe is enhanced.
4. Vinyltriethoxysilane, as a commonly used silane coupling agent, can chemically bond (couple) with both organic and inorganic materials due to its own chemical structure. Therefore, the addition of the vinyl triethoxysilane enhances the bonding effect between the polyethylene inner layer and the first bonding resin layer as well as the steel wire mesh reinforcement layer, and improves the stability between the steel wire mesh reinforcement polyethylene composite pipe layers. Meanwhile, as the polydimethylsiloxane has fluidity, the vinyltriethoxy silicon can be chemically bonded (coupled) with the polydimethylsiloxane while the defoaming effect of the polydimethylsiloxane is not influenced, so that the position stability between the polydimethylsiloxane and each component of the polyethylene inner layer is enhanced, namely the compression resistance of the polyethylene inner layer is enhanced, and the compression strength of the polyethylene composite pipe enhanced by the steel wire mesh is improved.
5. The addition of the vinyl triethoxysilane enhances the bonding effect between the polyethylene outer layer and the second bonding resin layer as well as the steel wire mesh reinforcing layer, improves the stability among all layers of the steel wire mesh reinforced polyethylene composite pipe, and enhances the compressive strength of the steel wire mesh reinforced polyethylene composite pipe.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with specific examples. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
Example 1
A production method of a steel wire mesh reinforced polyethylene composite pipe for water supply comprises the following steps:
s1, selecting polyethylene inner layer raw materials, polyethylene outer layer raw materials, bonding resin, steel wires and an extruder according to the proportion;
s2, selecting polyethylene inner layer raw materials according to a proportion, extruding a first polyethylene pipe to form a polyethylene inner layer through an extruder, wherein the polyethylene inner layer raw materials comprise: 100 parts of polyethylene and 2 parts of polyamide in parts by weight; wherein the polyamide is polyamide 610;
s3, extruding a first adhesive resin layer on the outer surface of the polyethylene inner layer;
s4, forming a steel wire mesh reinforced layer on the first bonding resin layer;
s5, extruding a second bonding resin layer on the outer surface of the steel wire mesh reinforcing layer;
s6, selecting polyethylene outer layer raw materials in proportion, and extruding a polyethylene outer layer on the outer surface of the second bonding resin layer through an extruder, wherein the polyethylene outer layer raw materials comprise: polyethylene.
Wherein the extrusion temperature of the first adhesive resin layer and the second adhesive resin layer is 260 ℃, the extrusion temperature of the polyethylene inner layer is 200 ℃, and the extrusion temperature of the polyethylene outer layer is 240 ℃.
It should be noted that, the first adhesive resin layer and the second adhesive resin layer each include an adhesive resin, which is referred to in the standard GB/T32439-2015, (the same below), and the components of the adhesive resin and the content of each component are common in the market, which is the prior art, so that the content of each component will not influence the understanding of the actual protection scope of the present application by those skilled in the art even if not described.
Example 2
A production method of a steel wire mesh reinforced polyethylene composite pipe for water supply comprises the following steps:
s1, selecting polyethylene inner layer raw materials, polyethylene outer layer raw materials, bonding resin, steel wires and an extruder according to the proportion;
s2, selecting polyethylene inner layer raw materials according to a proportion, extruding a first polyethylene pipe to form a polyethylene inner layer through an extruder, wherein the polyethylene inner layer raw materials comprise: 80 parts of polyethylene and 10 parts of polyamide in parts by weight; wherein the polyamide is polyamide 610;
s3, extruding a first adhesive resin layer on the outer surface of the polyethylene inner layer;
s4, forming a steel wire mesh reinforced layer on the first bonding resin layer;
s5, extruding a second bonding resin layer on the outer surface of the steel wire mesh reinforcing layer;
s4, selecting polyethylene outer layer raw materials in proportion, and extruding a polyethylene outer layer on the outer surface of the second bonding resin layer through an extruder, wherein the polyethylene outer layer raw materials comprise: polyethylene.
Wherein the extrusion temperature of the first adhesive resin layer and the second adhesive resin layer is 200 ℃, the extrusion temperature of the polyethylene inner layer is 280 ℃, and the extrusion temperature of the polyethylene outer layer is 180 ℃.
Example 3
A production method of a steel wire mesh reinforced polyethylene composite pipe for water supply comprises the following steps:
s1, selecting polyethylene inner layer raw materials, polyethylene outer layer raw materials, bonding resin, steel wires and an extruder according to the proportion;
s2, selecting polyethylene inner layer raw materials according to a proportion, extruding a first polyethylene pipe to form a polyethylene inner layer through an extruder, wherein the polyethylene inner layer raw materials comprise: according to the mass parts, 90 parts of polyethylene, 6 parts of polyamide and 5 parts of ethyl vanillin; wherein the polyamide is polyamide 610;
s3, extruding a first adhesive resin layer on the outer surface of the polyethylene inner layer;
s4, forming a steel wire mesh reinforced layer on the first bonding resin layer;
s5, extruding a second bonding resin layer on the outer surface of the steel wire mesh reinforcing layer;
s4, selecting polyethylene outer layer raw materials in proportion, and extruding a polyethylene outer layer on the outer surface of the second bonding resin layer through an extruder, wherein the polyethylene outer layer raw materials comprise: polyethylene.
Wherein the extrusion temperature of the first adhesive resin layer and the second adhesive resin layer is 230 ℃, the extrusion temperature of the polyethylene inner layer is 240 ℃, and the extrusion temperature of the polyethylene outer layer is 210 ℃.
Example 4
A production method of a steel wire mesh reinforced polyethylene composite pipe for water supply comprises the following steps:
s1, selecting polyethylene inner layer raw materials, polyethylene outer layer raw materials, bonding resin, steel wires and an extruder according to the proportion;
s2, selecting polyethylene inner layer raw materials according to a proportion, extruding a first polyethylene pipe to form a polyethylene inner layer through an extruder, wherein the polyethylene inner layer raw materials comprise: according to the mass parts, 95 parts of polyethylene, 5 parts of polyamide, 0.2 part of ethyl vanillin and 5 parts of polydimethylsiloxane; wherein the polyamide is polyamide 610;
s3, extruding a first adhesive resin layer on the outer surface of the polyethylene inner layer;
s4, forming a steel wire mesh reinforced layer on the first bonding resin layer;
s5, extruding a second bonding resin layer on the outer surface of the steel wire mesh reinforcing layer;
s4, selecting polyethylene outer layer raw materials in proportion, and extruding a polyethylene outer layer on the outer surface of the second bonding resin layer through an extruder, wherein the polyethylene outer layer raw materials comprise: polyethylene.
Wherein the extrusion temperature of the first adhesive resin layer and the second adhesive resin layer is 220 ℃, the extrusion temperature of the polyethylene inner layer is 250 ℃, and the extrusion temperature of the polyethylene outer layer is 220 ℃.
Example 5
A production method of a steel wire mesh reinforced polyethylene composite pipe for water supply comprises the following steps:
s1, selecting polyethylene inner layer raw materials, polyethylene outer layer raw materials, bonding resin, steel wires and an extruder according to the proportion;
s2, selecting polyethylene inner layer raw materials according to a proportion, extruding a first polyethylene pipe to form a polyethylene inner layer through an extruder, wherein the polyethylene inner layer raw materials comprise: according to the mass parts, 85 parts of polyethylene, 4 parts of polyamide, 2.6 parts of ethyl vanillin, 0.2 part of polydimethylsiloxane and 5 parts of vinyl triethoxysilane; wherein the polyamide is polyamide 610;
s3, extruding a first adhesive resin layer on the outer surface of the polyethylene inner layer;
s4, forming a steel wire mesh reinforced layer on the first bonding resin layer;
s5, extruding a second bonding resin layer on the outer surface of the steel wire mesh reinforcing layer;
s4, selecting polyethylene outer layer raw materials in proportion, and extruding a polyethylene outer layer on the outer surface of the second bonding resin layer through an extruder, wherein the polyethylene outer layer raw materials comprise: polyethylene.
Wherein the extrusion temperature of the first adhesive resin layer and the second adhesive resin layer is 220 ℃, the extrusion temperature of the polyethylene inner layer is 250 ℃, and the extrusion temperature of the polyethylene outer layer is 220 ℃.
Example 6
A production method of a steel wire mesh reinforced polyethylene composite pipe for water supply comprises the following steps:
s1, selecting polyethylene inner layer raw materials, polyethylene outer layer raw materials, bonding resin, steel wires and an extruder according to the proportion;
s2, selecting polyethylene inner layer raw materials according to a proportion, extruding a first polyethylene pipe to form a polyethylene inner layer through an extruder, wherein the polyethylene inner layer raw materials comprise: according to the mass parts, 92 parts of polyethylene, 6 parts of polyamide, 3 parts of ethyl vanillin, 2.6 parts of polydimethylsiloxane and 1 part of vinyl triethoxysilane; wherein the polyamide is polyamide 610;
s3, extruding a first adhesive resin layer on the outer surface of the polyethylene inner layer;
s4, forming a steel wire mesh reinforced layer on the first bonding resin layer;
s5, extruding a second bonding resin layer on the outer surface of the steel wire mesh reinforcing layer;
s4, selecting polyethylene outer layer raw materials in proportion, and extruding a polyethylene outer layer on the outer surface of the second bonding resin layer through an extruder, wherein the polyethylene outer layer raw materials comprise: 100 parts of polyethylene and 1 part of vinyl triethoxysilane by mass;
wherein the extrusion temperature of the first adhesive resin layer and the second adhesive resin layer is 250 ℃, the extrusion temperature of the polyethylene inner layer is 270 ℃, and the extrusion temperature of the polyethylene outer layer is 220 ℃.
Example 7
A production method of a steel wire mesh reinforced polyethylene composite pipe for water supply comprises the following steps:
s1, selecting polyethylene inner layer raw materials, polyethylene outer layer raw materials, bonding resin, steel wires and an extruder according to the proportion;
s2, selecting polyethylene inner layer raw materials according to a proportion, extruding a first polyethylene pipe to form a polyethylene inner layer through an extruder, wherein the polyethylene inner layer raw materials comprise: according to the mass parts, 92 parts of polyethylene, 4 parts of polyamide, 3 parts of ethyl vanillin, 3 parts of polydimethylsiloxane and 3 parts of vinyl triethoxysilane; wherein the polyamide is polyamide 610;
s3, extruding a first adhesive resin layer on the outer surface of the polyethylene inner layer;
s4, forming a steel wire mesh reinforced layer on the first bonding resin layer;
s5, extruding a second bonding resin layer on the outer surface of the steel wire mesh reinforcing layer;
s4, selecting polyethylene outer layer raw materials in proportion, and extruding a polyethylene outer layer on the outer surface of the second bonding resin layer through an extruder, wherein the polyethylene outer layer raw materials comprise: 80 parts of polyethylene and 5 parts of vinyl triethoxysilane by mass;
wherein the extrusion temperature of the first adhesive resin layer and the second adhesive resin layer is 250 ℃, the extrusion temperature of the polyethylene inner layer is 270 ℃, and the extrusion temperature of the polyethylene outer layer is 220 ℃.
Example 8
A production method of a steel wire mesh reinforced polyethylene composite pipe for water supply comprises the following steps:
s1, selecting polyethylene inner layer raw materials, polyethylene outer layer raw materials, bonding resin, steel wires and an extruder according to the proportion;
s2, selecting polyethylene inner layer raw materials according to a proportion, extruding a first polyethylene pipe to form a polyethylene inner layer through an extruder, wherein the polyethylene inner layer raw materials comprise: according to the mass parts, 89 parts of polyethylene, 7 parts of polyamide, 3 parts of ethyl vanillin, 3 parts of polydimethylsiloxane and 4 parts of vinyl triethoxysilane; wherein the polyamide is polyamide 610;
s3, extruding a first adhesive resin layer on the outer surface of the polyethylene inner layer;
s4, forming a steel wire mesh reinforced layer on the first bonding resin layer;
s5, extruding a second bonding resin layer on the outer surface of the steel wire mesh reinforcing layer;
s4, selecting polyethylene outer layer raw materials in proportion, and extruding a polyethylene outer layer on the outer surface of the second bonding resin layer through an extruder, wherein the polyethylene outer layer raw materials comprise: 90 parts of polyethylene and 3 parts of vinyl triethoxysilane by mass;
wherein the extrusion temperature of the first adhesive resin layer and the second adhesive resin layer is 230 ℃, the extrusion temperature of the polyethylene inner layer is 240 ℃, and the extrusion temperature of the polyethylene outer layer is 210 ℃.
2. Content of the experiment
Taking the steel wire mesh reinforced polyethylene composite pipes prepared in the embodiments 1-8, preparing 12 parts of the steel wire mesh reinforced polyethylene composite pipes in each embodiment respectively, and performing performance tests: the pipes were tested for peel strength (N/mm), hydrostatic strength, compressive cracking stability according to standard GB/T32439-2015. Data for each set of examples was recorded, then the maximum and minimum values were discarded, and the remaining values were averaged and recorded.
3. Characterization of product Properties
The results obtained for each set of experiments are reported in the following table:
examples Peel strength (N/mm) Hydrostatic strength Stability to cracking under pressure
Example 1 19.6 Without cracking and leakage No cracking, delaminating and crazing
Example 2 21.3 Without cracking and leakage No cracking, delaminating and crazing
Example 3 21.9 Without cracking and leakage No cracking, delaminating and crazing
Example 4 22.3 Without cracking and leakage No cracking, delaminating and crazing
Example 5 24.5 Without cracking and leakage No cracking, delaminating and crazing
Example 6 25.9 Without cracking and leakage No cracking, delaminating and crazing
Example 7 26.4 Without cracking and leakage No cracking, delaminating and crazing
Example 8 26.2 Without cracking and leakage No cracking, delaminating and crazing
According to the data, the concrete obtained in the above embodiment has the tested project parameters (dry density, compressive strength and thermal conductivity coefficient) all meeting the requirements of the standard GB/T32439-2015. According to the above, the addition of the polyamide, the ethyl vanillin, the polydimethylsiloxane and the vinyl triethoxysilane can increase the peeling strength of the pipe, namely, the stable compounding among all layers of the steel wire mesh reinforced polyethylene composite pipe is improved.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.

Claims (9)

1. A steel wire mesh reinforced polyethylene composite pipe for water supply is characterized in that: the steel wire mesh reinforced plastic composite material comprises a polyethylene inner layer, a first bonding resin layer, a steel wire mesh reinforced layer, a second bonding resin layer and a polyethylene outer layer from inside to outside in sequence, wherein the steel wire mesh reinforced layer is formed by spirally winding a plurality of steel wires;
the polyethylene inner layer comprises the following components in parts by weight: 80-100 parts of polyethylene and 2-10 parts of polyamide.
2. The steel wire mesh reinforced polyethylene composite pipe for water supply as claimed in claim 1, wherein: the polyethylene inner layer further comprises 0.2-5 parts of ethyl vanillin according to the parts by weight.
3. The steel wire mesh reinforced polyethylene composite pipe for water supply as claimed in claim 1, wherein: the polyethylene inner layer further comprises 0.2-5 parts of polydimethylsiloxane by weight.
4. The steel wire mesh reinforced polyethylene composite pipe for water supply as claimed in claim 1, wherein: the polyethylene inner layer further comprises 1-5 parts of vinyl triethoxysilane by mass.
5. The steel wire mesh reinforced polyethylene composite pipe for water supply as claimed in claim 1, wherein: the polyethylene outer layer comprises the following components in parts by weight: 80-100 parts of polyethylene and 1-5 parts of vinyl triethoxysilane.
6. A method for preparing a wire mesh reinforced polyethylene composite pipe for water supply according to any one of claims 1 to 5, characterized in that: the method comprises the following steps:
s1, selecting polyethylene inner layer raw materials, polyethylene outer layer raw materials, bonding resin, steel wires and an extruder according to the proportion;
s2, selecting polyethylene inner layer raw materials according to a proportion, and extruding a polyethylene pipe I through an extruder to form a polyethylene inner layer;
s3, extruding a first adhesive resin layer on the outer surface of the polyethylene inner layer;
s4, forming a steel wire mesh reinforced layer on the first bonding resin layer;
s5, extruding a second bonding resin layer on the outer surface of the steel wire mesh reinforcing layer;
and S6, selecting the polyethylene outer layer raw material according to the proportion, and extruding the polyethylene outer layer on the outer surface of the second adhesive resin layer through an extruder.
7. The method for producing the steel wire mesh reinforced polyethylene composite pipe for water supply as claimed in claim 6, wherein the steel wire mesh reinforced polyethylene composite pipe for water supply comprises the following steps: the extrusion temperature of the first bonding resin layer and the second bonding resin layer is 200-260 ℃.
8. The method for producing the steel wire mesh reinforced polyethylene composite pipe for water supply as claimed in claim 6, wherein the steel wire mesh reinforced polyethylene composite pipe for water supply comprises the following steps: the extrusion temperature of the polyethylene inner layer is 200-280 ℃.
9. The method for producing the steel wire mesh reinforced polyethylene composite pipe for water supply as claimed in claim 6, wherein the steel wire mesh reinforced polyethylene composite pipe for water supply comprises the following steps: the extrusion temperature of the polyethylene outer layer is 180-240 ℃.
CN202110490550.6A 2021-05-06 2021-05-06 Steel wire mesh reinforced polyethylene composite pipe for water supply and production method thereof Pending CN113105687A (en)

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