CN113502011A - Steel wire mesh framework corrugated pipe and preparation method thereof - Google Patents
Steel wire mesh framework corrugated pipe and preparation method thereof Download PDFInfo
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- CN113502011A CN113502011A CN202110741747.2A CN202110741747A CN113502011A CN 113502011 A CN113502011 A CN 113502011A CN 202110741747 A CN202110741747 A CN 202110741747A CN 113502011 A CN113502011 A CN 113502011A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 75
- 239000010959 steel Substances 0.000 title claims abstract description 75
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- -1 polyethylene Polymers 0.000 claims abstract description 84
- 239000004698 Polyethylene Substances 0.000 claims abstract description 80
- 229920000573 polyethylene Polymers 0.000 claims abstract description 78
- 239000010410 layer Substances 0.000 claims abstract description 57
- 239000004831 Hot glue Substances 0.000 claims abstract description 46
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical class 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 27
- 239000003607 modifier Substances 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 239000005038 ethylene vinyl acetate Substances 0.000 claims abstract description 7
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims abstract description 7
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 7
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims abstract description 6
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims abstract description 6
- 235000013539 calcium stearate Nutrition 0.000 claims abstract description 6
- 239000008116 calcium stearate Substances 0.000 claims abstract description 6
- 239000003822 epoxy resin Substances 0.000 claims abstract description 6
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 6
- 239000000843 powder Substances 0.000 claims abstract description 6
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 25
- 239000004917 carbon fiber Substances 0.000 claims description 25
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 13
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 13
- 150000004645 aluminates Chemical class 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 229940057995 liquid paraffin Drugs 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 238000002715 modification method Methods 0.000 claims description 5
- 150000002148 esters Chemical class 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 239000002689 soil Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/15—Extrusion 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
- B29C48/151—Coating hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/79—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling of preformed parts or layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/001—Pipes; Pipe joints
-
- 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
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
-
- 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
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Thermal Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention discloses a corrugated pipe with a steel wire mesh framework and a preparation method thereof, the corrugated pipe sequentially comprises a polyethylene inner pipe, a first hot melt adhesive layer, a steel wire mesh layer, a second hot melt adhesive layer and a polyethylene outer pipe from inside to outside, and the polyethylene inner pipe and the polyethylene outer pipe are composed of the following raw materials in parts by weight: 65-85 parts of polyethylene, 5-12 parts of polyoxyethylene, 15-35 parts of ethylene-vinyl acetate copolymer, 4-12 parts of modifier, 2-6 parts of silicon carbide micro powder, 3-12 parts of modified talcum powder, 5-15 parts of calcium stearate and 5-15 parts of epoxy resin. The corrugated pipe has high strength, and the steel wire mesh is clamped in the middle through the hot melt adhesive, so that the strength of the corrugated pipe is increased on the premise of keeping the original performance of the corrugated pipe.
Description
Technical Field
The invention relates to the technical field of corrugated pipe preparation, in particular to a steel wire mesh framework corrugated pipe and a preparation method thereof.
Background
The PE double-wall corrugated pipe is a novel light pipe which is made of polyethylene serving as a raw material and processed by extrusion and a special forming process, has the characteristics of light weight, high pressure resistance, good toughness, fast construction, long service life and the like, has good corrosion resistance and high insulativity of a common plastic pipe, is widely applied to the fields of municipal drainage and pollution discharge, agricultural irrigation, coal mine ventilation, chemical engineering, communication cable sheaths and the like, can be compressed by soil above the pipe wall to collapse and deform the upper part of the pipe when the PE double-wall corrugated pipe which is positioned in the underground soil depth and used for drainage is used for a long time, and can lead the pipe diameter to be reduced, seriously affect the water supply and drainage functions of the pipe, carry out shaping operation on the collapsed pipe, recover the original shape of the collapsed pipe and consume manpower and material resources. It is therefore desirable to find a bellows that addresses the above-mentioned problems.
Disclosure of Invention
The invention aims to: in view of the above problems, there is provided a corrugated pipe including a steel wire framework, which has high strength and high ring stiffness and can be used in the deep soil for a long time.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
the utility model provides a wire net skeleton bellows, this bellows include polyethylene inner tube, first hot melt adhesive layer, steel mesh layer, second hot melt adhesive layer and polyethylene outer tube by interior outside to in proper order, polyethylene inner tube and polyethylene outer tube comprise the raw materials of following parts by weight: 65-85 parts of polyethylene, 5-12 parts of polyoxyethylene, 15-35 parts of ethylene-vinyl acetate copolymer, 4-12 parts of modifier, 2-6 parts of silicon carbide micro powder, 3-12 parts of modified talcum powder, 5-15 parts of calcium stearate and 5-15 parts of epoxy resin.
Furthermore, the polyethylene inner tube and the polyethylene appearance are corrugated, the first hot melt adhesive layer and the second hot melt adhesive layer are spiral and clamp the steel wire mesh layer in the middle, and the thickness of the steel wire mesh layer is 1-5 mm.
Further, the modifier comprises 30-45 parts of carbon fiber, 50-60 parts of vinyl acetate and 5-13 parts of esterquat.
Further, the preparation method of the modifier comprises the following steps: the carbon fiber, the vinyl acetate and the esterquat are taken according to the weight portion, the carbon fiber is placed in an oven to be baked for 2 to 5 hours at the temperature of 150 ℃ and 250 ℃, and then the carbon fiber, the vinyl acetate and the esterquat are added into a high-speed mixer to be mixed for 5 to 15min to obtain the material.
Further, the modification method of the modified talcum powder comprises the following steps: dissolving aluminate in liquid paraffin, drying talcum powder, adding the dried talcum powder, grinding for 30-60min, and then placing the mixture at the constant temperature of 100 ℃ for a period of time to obtain the modified talcum powder.
A preparation method of a steel wire mesh framework corrugated pipe comprises the following steps:
(1) extruding a polyethylene inner pipe: preheating raw materials of a polyethylene inner pipe for a period of time, and then extruding the polyethylene inner pipe in an extruder to obtain a pipe blank;
(2) adhering a steel wire mesh layer: after the steel wire mesh is heated, the steel wire mesh, the first layer of hot melt adhesive and the second layer of hot melt adhesive are extruded and adhered to the outer surface of the pipe blank at the same time when the pipe blank passes through the pipe blank, and the steel wire mesh is clamped in the middle of the pipe blank and is heated and pressurized to be embedded in the first layer of hot melt adhesive and the second layer of hot melt adhesive;
(3) extruding a polyethylene outer pipe: and (3) enabling the pipe body attached with the steel wire mesh in the step (2) to pass through a polyethylene outer pipe extruder, extruding and wrapping the outer surface of the pipe body by the polyethylene outer pipe, and cooling to obtain the corrugated pipe with the steel wire mesh framework.
Further, in the step (1), the preheating temperature is 70-85 ℃, and the preheating time is 15-30 min.
Further, in the step (2), the heating temperature is 80-105 ℃, and the pressurizing pressure is 30-50 MPa.
Further, in the step (3), the polyethylene outer pipe is corrugated on the surface of the die after being extruded.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
(1) the steel wire mesh is embedded in the corrugated pipe in the middle, so that the ring stiffness and the compressive strength of the whole corrugated pipe can be greatly enhanced, and the corrugated pipe can conveniently work in the deep soil for a long time;
(2) the addition of the silicon carbide micro powder in the raw material of the corrugated pipe is beneficial to increasing the elastic modulus and the tensile strength, and the addition of the modified talcum powder can effectively improve the toughness of the corrugated pipe, so that the pressure resistance of the corrugated pipe is increased;
(3) the hot melt adhesive is used for heating and bonding the steel wire mesh between the two layers of hot melt adhesive, so that the steel wire mesh is prevented from falling off or loosening, and the ethylene-vinyl acetate copolymer is added into the raw materials of the polyethylene inner pipe and the polyethylene outer pipe, so that the steel wire mesh is favorably bonded and fixed with the hot melt adhesive during heating;
(4) the corrugated pipe prepared by the invention has the advantages of simple structure, practical performance, high strength and wide application in various fields.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to preferred embodiments. It should be noted, however, that the numerous details set forth in the description are merely for the purpose of providing the reader with a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.
Example 1
The utility model provides a wire net skeleton bellows, this bellows include polyethylene inner tube, first hot melt adhesive layer, steel mesh layer, second hot melt adhesive layer and polyethylene outer tube by interior outside to in proper order, polyethylene inner tube and polyethylene outer tube comprise the raw materials of following parts by weight: 65 parts of polyethylene, 5 parts of polyoxyethylene, 15 parts of ethylene-vinyl acetate copolymer, 4 parts of modifier, 2 parts of silicon carbide micropowder, 3 parts of modified talcum powder, 5 parts of calcium stearate and 5 parts of epoxy resin.
The polyethylene inner tube is wavy with the polyethylene outward appearance, first hot melt adhesive layer and second hot melt adhesive layer are the heliciform and with the steel wire netting centre gripping in the centre, the thickness of steel wire netting is 1 mm.
The modifier comprises 30 parts of carbon fiber, 50 parts of vinyl acetate and 5 parts of ester-based quaternary ammonium salt; the preparation method of the modifier comprises the following steps: the preparation method comprises the following steps of taking the carbon fibers, the vinyl acetate and the esterquat in parts by weight, placing the carbon fibers in an oven, baking the carbon fibers for 2 hours at 150 ℃, and adding the carbon fibers, the vinyl acetate and the esterquat into a high-speed mixer to mix for 5min to obtain the carbon fiber material.
The modification method of the modified talcum powder comprises the following steps: dissolving aluminate in liquid paraffin, drying talcum powder, adding the dried talcum powder, grinding for 30min, and then placing the mixture at the constant temperature of 100 ℃ for a period of time to obtain the modified talcum powder.
The preparation method of the steel wire mesh framework corrugated pipe comprises the following steps:
(1) extruding a polyethylene inner pipe: preheating raw materials of a polyethylene inner pipe for a period of time, and then extruding the polyethylene inner pipe in an extruder to obtain a pipe blank, wherein the preheating temperature is 70 ℃, and the preheating time is 15 min;
(2) adhering a steel wire mesh layer: after heating the steel wire mesh, extruding and adhering the steel wire mesh to the outer surface of the pipe blank together with the first layer of hot melt adhesive and the second layer of hot melt adhesive when the pipe blank passes through the pipe blank, clamping the steel wire mesh in the middle, and heating and pressurizing to embed the steel wire mesh in the first layer of hot melt adhesive and the second layer of hot melt adhesive, wherein the heating temperature is 80 ℃, and the pressurizing pressure is 30 MPa;
(3) extruding a polyethylene outer pipe: and (3) enabling the pipe body attached with the steel wire mesh in the step (2) to pass through a polyethylene outer pipe extruder, extruding and wrapping the outer surface of the pipe body by the polyethylene outer pipe, cooling to obtain the corrugated pipe with the steel wire mesh framework, and extruding the polyethylene outer pipe and then corrugating the surface of the corrugated pipe through a die.
Example 2
The utility model provides a wire net skeleton bellows, this bellows include polyethylene inner tube, first hot melt adhesive layer, steel mesh layer, second hot melt adhesive layer and polyethylene outer tube by interior outside to in proper order, polyethylene inner tube and polyethylene outer tube comprise the raw materials of following parts by weight: 85 parts of polyethylene, 12 parts of polyoxyethylene, 35 parts of ethylene-vinyl acetate copolymer, 12 parts of modifier, 6 parts of silicon carbide micro powder, 12 parts of modified talcum powder, 15 parts of calcium stearate and 15 parts of epoxy resin.
The polyethylene inner tube is wavy with the polyethylene outward appearance, first hot melt adhesive layer and second hot melt adhesive layer are the heliciform and with the steel wire netting centre gripping in the centre, the thickness of steel wire netting is 5 mm.
The modifier comprises 45 parts of carbon fiber, 60 parts of vinyl acetate and 13 parts of ester-based quaternary ammonium salt; the preparation method of the modifier comprises the following steps: the preparation method comprises the following steps of taking the carbon fibers, the vinyl acetate and the esterquat in parts by weight, placing the carbon fibers in an oven, baking the carbon fibers for 5 hours at 250 ℃, and adding the carbon fibers, the vinyl acetate and the esterquat into a high-speed mixer to mix for 15min to obtain the composite material.
The modification method of the modified talcum powder comprises the following steps: dissolving aluminate in liquid paraffin, drying talcum powder, adding the dried talcum powder, grinding for 60min, and then placing the mixture at the constant temperature of 100 ℃ for a period of time to obtain the modified talcum powder.
The preparation method of the steel wire mesh framework corrugated pipe comprises the following steps:
(1) extruding a polyethylene inner pipe: preheating raw materials of a polyethylene inner pipe for a period of time, and then extruding the polyethylene inner pipe in an extruder to obtain a pipe blank, wherein the preheating temperature is 85 ℃, and the preheating time is 15 min;
(2) adhering a steel wire mesh layer: after heating the steel wire mesh, extruding and adhering the steel wire mesh to the outer surface of the pipe blank together with the first layer of hot melt adhesive and the second layer of hot melt adhesive when the pipe blank passes through the pipe blank, clamping the steel wire mesh in the middle, heating and pressurizing to enable the steel wire mesh to be embedded in the first layer of hot melt adhesive and the second layer of hot melt adhesive, wherein the heating temperature is 105 ℃, and the pressurizing pressure is 50 MPa;
(3) extruding a polyethylene outer pipe: and (3) enabling the pipe body attached with the steel wire mesh in the step (2) to pass through a polyethylene outer pipe extruder, extruding and wrapping the outer surface of the pipe body by the polyethylene outer pipe, cooling to obtain the corrugated pipe with the steel wire mesh framework, and extruding the polyethylene outer pipe and then corrugating the surface of the corrugated pipe through a die.
Example 3
The utility model provides a wire net skeleton bellows, this bellows include polyethylene inner tube, first hot melt adhesive layer, steel mesh layer, second hot melt adhesive layer and polyethylene outer tube by interior outside to in proper order, polyethylene inner tube and polyethylene outer tube comprise the raw materials of following parts by weight: 70 parts of polyethylene, 10 parts of polyoxyethylene, 25 parts of ethylene-vinyl acetate copolymer, 8 parts of modifier, 4 parts of silicon carbide micro powder, 9 parts of modified talcum powder, 10 parts of calcium stearate and 10 parts of epoxy resin.
The polyethylene inner tube is wavy with the polyethylene outward appearance, first hot melt adhesive layer and second hot melt adhesive layer are the heliciform and with the steel wire netting centre gripping in the centre, the thickness of steel wire netting is 3 mm.
The modifier comprises 40 parts of carbon fiber, 55 parts of vinyl acetate and 8 parts of ester-based quaternary ammonium salt; the preparation method of the modifier comprises the following steps: the preparation method comprises the following steps of taking the carbon fibers, the vinyl acetate and the esterquat in parts by weight, placing the carbon fibers in an oven, baking the carbon fibers for 3 hours at 200 ℃, and adding the carbon fibers, the vinyl acetate and the esterquat into a high-speed mixer to mix for 10min to obtain the carbon fiber composite material.
The modification method of the modified talcum powder comprises the following steps: dissolving aluminate in liquid paraffin, drying talcum powder, adding the dried talcum powder, grinding for 50min, and then placing the mixture at the constant temperature of 100 ℃ for a period of time to obtain the modified talcum powder.
The preparation method of the steel wire mesh framework corrugated pipe comprises the following steps:
(1) extruding a polyethylene inner pipe: preheating raw materials of a polyethylene inner pipe for a period of time, and then extruding the polyethylene inner pipe in an extruder to obtain a pipe blank, wherein the preheating temperature is 80 ℃, and the preheating time is 20 min;
(2) adhering a steel wire mesh layer: after heating the steel wire mesh, extruding and adhering the steel wire mesh to the outer surface of the pipe blank together with the first layer of hot melt adhesive and the second layer of hot melt adhesive when the pipe blank passes through the pipe blank, clamping the steel wire mesh in the middle, heating and pressurizing to enable the steel wire mesh to be embedded in the first layer of hot melt adhesive and the second layer of hot melt adhesive, wherein the heating temperature is 90 ℃, and the pressurizing pressure is 40 MPa;
(3) extruding a polyethylene outer pipe: penetrating the pipe body attached with the steel wire mesh in the step (2) into a polyethylene outer pipe extruder, extruding and wrapping the polyethylene outer pipe on the outer surface of the pipe body, cooling to obtain the corrugated pipe with the steel wire mesh framework, extruding the polyethylene outer pipe, and then passing through a mould to form surface corrugations
A commercially available corrugated pipe and the corrugated pipes prepared in examples 1 to 3 were subjected to comparative tests to test tensile strength, bending strength, notched impact strength, ring stiffness and the like, wherein the tensile strength and the bending strength were measured with reference to GBT13663-2000, the notched impact strength was measured by digging a 45-degree V-shaped notch in the surface of a corrugated pipe sample with a radius of 0.2mm, the test was carried out using a simple beam pendulum impact tester with a pendulum impact energy of 55J, an impact velocity of 3.5m/s and a span of 75mm, the notched impact strength was measured, the ring stiffness was measured according to GBT9647-2003, and the data obtained by the test are shown in Table 1.
TABLE 1 test data sheet
As can be seen from the data in the table, the corrugated pipe prepared completely according to the method of the invention has various performances which are greatly superior to those of the existing corrugated pipe on the market, and can be widely popularized.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (9)
1. The utility model provides a wire net skeleton bellows, its characterized in that, this bellows include polyethylene inner tube, first hot melt adhesive layer, steel wire stratum reticulare, second hot melt adhesive layer and polyethylene outer tube by interior outside to in proper order, polyethylene inner tube and polyethylene outer tube comprise the raw materials of following parts by weight: 65-85 parts of polyethylene, 5-12 parts of polyoxyethylene, 15-35 parts of ethylene-vinyl acetate copolymer, 4-12 parts of modifier, 2-6 parts of silicon carbide micro powder, 3-12 parts of modified talcum powder, 5-15 parts of calcium stearate and 5-15 parts of epoxy resin.
2. The corrugated pipe with the steel wire mesh framework as claimed in claim 1, wherein the polyethylene inner pipe and the polyethylene are corrugated in appearance, the first hot melt adhesive layer and the second hot melt adhesive layer are spiral and clamp the steel wire mesh layer in the middle, and the thickness of the steel wire mesh layer is 1-5 mm.
3. The corrugated pipe with the steel wire mesh framework as claimed in claim 1, wherein the modifier comprises 30-45 parts of carbon fiber, 50-60 parts of vinyl acetate and 5-13 parts of ester-based quaternary ammonium salt.
4. The corrugated pipe with the steel wire mesh framework as claimed in claim 3, wherein the preparation method of the modifier comprises the following steps: the carbon fiber, the vinyl acetate and the esterquat are taken according to the weight portion, the carbon fiber is placed in an oven to be baked for 2 to 5 hours at the temperature of 150 ℃ and 250 ℃, and then the carbon fiber, the vinyl acetate and the esterquat are added into a high-speed mixer to be mixed for 5 to 15min to obtain the material.
5. The corrugated pipe with the steel wire mesh framework and the preparation method of the corrugated pipe with the steel wire mesh framework as claimed in claim 5, wherein the modification method of the modified talcum powder is as follows: dissolving aluminate in liquid paraffin, drying talcum powder, adding the dried talcum powder, grinding for 30-60min, and then placing the mixture at the constant temperature of 100 ℃ for a period of time to obtain the modified talcum powder.
6. A method for preparing the steel wire mesh framework corrugated pipe as claimed in claims 1 to 5, comprising the following steps:
(1) extruding a polyethylene inner pipe: preheating raw materials of a polyethylene inner pipe for a period of time, and then extruding the polyethylene inner pipe in an extruder to obtain a pipe blank;
(2) adhering a steel wire mesh layer: after the steel wire mesh is heated, the steel wire mesh, the first layer of hot melt adhesive and the second layer of hot melt adhesive are extruded and adhered to the outer surface of the pipe blank at the same time when the pipe blank passes through the pipe blank, and the steel wire mesh is clamped in the middle of the pipe blank and is heated and pressurized to be embedded in the first layer of hot melt adhesive and the second layer of hot melt adhesive;
(3) extruding a polyethylene outer pipe: and (3) enabling the pipe body attached with the steel wire mesh in the step (2) to pass through a polyethylene outer pipe extruder, extruding and wrapping the outer surface of the pipe body by the polyethylene outer pipe, and cooling to obtain the corrugated pipe with the steel wire mesh framework.
7. The corrugated pipe with the steel wire mesh framework and the preparation method of the corrugated pipe with the steel wire mesh framework as claimed in claim 7 are characterized in that: in the step (1), the preheating temperature is 70-85 ℃ and the preheating time is 15-30 min.
8. The corrugated pipe with the steel wire mesh framework and the preparation method of the corrugated pipe with the steel wire mesh framework as claimed in claim 7 are characterized in that: in the step (2), the heating temperature is 80-105 ℃, and the pressurizing pressure is 30-50 MPa.
9. The corrugated pipe with the steel wire mesh framework and the preparation method of the corrugated pipe with the steel wire mesh framework as claimed in claim 7 are characterized in that: in the step (3), the polyethylene outer pipe is subjected to surface corrugation through a die after being extruded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110741747.2A CN113502011A (en) | 2021-06-30 | 2021-06-30 | Steel wire mesh framework corrugated pipe and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110741747.2A CN113502011A (en) | 2021-06-30 | 2021-06-30 | Steel wire mesh framework corrugated pipe and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN113502011A true CN113502011A (en) | 2021-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110741747.2A Pending CN113502011A (en) | 2021-06-30 | 2021-06-30 | Steel wire mesh framework corrugated pipe and preparation method thereof |
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| CN114738564A (en) * | 2022-04-21 | 2022-07-12 | 通晟管业(苏州)有限公司 | High-strength double-wall corrugated pipe and preparation method thereof |
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Application publication date: 20211015 |