CN113531227B - Preparation method of steel strip reinforced spiral corrugated pipe with strong corrosion resistance - Google Patents
Preparation method of steel strip reinforced spiral corrugated pipe with strong corrosion resistance Download PDFInfo
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- CN113531227B CN113531227B CN202110771421.4A CN202110771421A CN113531227B CN 113531227 B CN113531227 B CN 113531227B CN 202110771421 A CN202110771421 A CN 202110771421A CN 113531227 B CN113531227 B CN 113531227B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
- F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
-
- 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
- B29D23/18—Pleated or corrugated hoses
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
- C08L63/10—Epoxy resins modified by unsaturated compounds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
- F16L11/081—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more layers of a helically wound cord or wire
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/14—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics
- F16L11/15—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics corrugated
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0462—Tubings, i.e. having a closed section
- H02G3/0468—Corrugated
-
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention discloses a steel strip reinforced helical bellows with strong corrosion resistance and a preparation method thereof, wherein the steel strip reinforced helical bellows comprises an outer tube and an inner tube, and is characterized in that: the steel belt is arranged between the outer pipe and the inner pipe and is distributed along the axial direction of the circumferential surfaces of the outer pipe and the inner pipe, and the outer pipe and the inner pipe are composed of the following components in parts by weight: 80-120 parts of bisphenol A epoxy vinyl resin, 30-60 parts of phenolic resin, 20-34 parts of polypropylene, 34-42 parts of glass fiber, 6-12 parts of modified graphene, 3-7 parts of silicon carbide micro powder, 5-10 parts of color master, 2-12 parts of coupling agent, 20-40 parts of carboxyl nitrile rubber, 1-2 parts of anti-embrittling agent palmitic acid and 0.5-1.5 parts of mildew preventive.
Description
Technical Field
The invention relates to the technical field of corrugated pipes, in particular to a preparation method of a steel strip reinforced spiral corrugated pipe with strong corrosion resistance.
Background
The corrugated pipe is a tubular elastic sensitive element which is formed by connecting foldable corrugated sheets along the folding and stretching direction. The corrugated pipe mainly comprises a metal corrugated pipe, a corrugated expansion joint, a corrugated heat exchange pipe, a diaphragm capsule, a metal hose and the like. The metal corrugated pipe is mainly used for compensating thermal deformation of the pipeline, absorbing shock, absorbing settlement deformation of the pipeline and the like, and is widely applied to industries such as petrifaction, instruments, aerospace, chemical engineering, electric power, cement, metallurgy and the like. The corrugated pipe made of other materials such as plastics can be applied to the fields of medium transportation, electric power threading, machine tools, household appliances and the like.
Due to the application field of the steel strip reinforced spiral corrugated pipe, different media can be conveyed in the steel strip reinforced spiral corrugated pipe, part of the media can have a corrosion effect, although the corrosion degree is small, the steel strip reinforced spiral corrugated pipe can be greatly corroded and damaged by long-time accumulation, the service life of the steel strip reinforced spiral corrugated pipe is shortened, and therefore the steel strip reinforced spiral corrugated pipe with strong corrosion resistance and the preparation method thereof are provided.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a steel strip reinforced helical bellows with strong corrosion resistance and a preparation method thereof.
In order to achieve the purpose, the invention provides the following technical scheme: the steel strip reinforced spiral corrugated pipe with strong corrosion resistance comprises an outer pipe and an inner pipe, wherein steel strips are arranged between the outer pipe and the inner pipe and are distributed along the axial direction of the circumferential surfaces of the outer pipe and the inner pipe, and the outer pipe and the inner pipe are composed of the following components in parts by weight:
80-120 parts of bisphenol A epoxy vinyl resin, 30-60 parts of phenolic resin, 20-34 parts of polypropylene, 34-42 parts of glass fiber, 6-12 parts of modified graphene, 3-7 parts of silicon carbide micro powder, 5-10 parts of color master, 2-12 parts of coupling agent, 20-40 parts of carboxyl nitrile rubber, 1-2 parts of anti-embrittling agent palmitic acid and 0.5-1.5 parts of mildew preventive.
As further preferable in the present technical solution: the outer pipe and the inner pipe are composed of the following components in parts by weight: 80 parts of bisphenol A epoxy vinyl resin, 30 parts of phenolic resin, 20 parts of polypropylene, 34 parts of glass fiber, 6 parts of modified graphene, 3 parts of silicon carbide micro powder, 5 parts of color master, 2 parts of coupling agent, 20 parts of carboxyl nitrile rubber, 1 part of anti-embrittlement agent palmitic acid and 0.5 part of mildew preventive.
As further preferable in the present technical solution: the outer pipe and the inner pipe are composed of the following components in parts by weight: 100 parts of bisphenol A epoxy vinyl resin, 45 parts of phenolic resin, 27 parts of polypropylene, 38 parts of glass fiber, 9 parts of modified graphene, 10 parts of silicon carbide micro powder, 8 parts of color master, 7 parts of coupling agent, 30 parts of carboxyl nitrile rubber, 1.5 parts of anti-embrittlement agent palmitic acid and 1 part of mildew preventive.
As further preferable in the present technical solution: the outer pipe and the inner pipe are composed of the following components in parts by weight: 120 parts of bisphenol A epoxy vinyl resin, 60 parts of phenolic resin, 34 parts of polypropylene, 42 parts of glass fiber, 12 parts of modified graphene, 7 parts of silicon carbide micro powder, 10 parts of color master batch, 12 parts of coupling agent, 40 parts of carboxyl nitrile rubber, 2 parts of anti-embrittlement agent palmitic acid and 1.5 parts of mildew preventive.
A preparation method of a steel strip reinforced spiral corrugated pipe with strong corrosion resistance comprises the following steps:
s1, treating a steel strip: heating the steel belt to 200-300 ℃, then carrying out heat preservation treatment, coating the molten adhesive on the surface of the heated steel belt, cooling the steel belt after coating to obtain a plastic-coated steel belt, drawing the cooled plastic-coated steel belt at a constant speed of 0.5-8 m/min, and processing the plastic-coated steel belt into a waveform structure;
s2, preparing a mixed plastic solution A: weighing glass fiber, modified graphene and silicon carbide micropowder according to a proportion, then weighing one third of bisphenol A epoxy vinyl resin, phenolic resin and polypropylene according to a proportion, feeding the weighed raw materials into a mixer for mixing and stirring uniformly, and then melting the uniformly stirred materials at the temperature of 190-230 ℃ to obtain a mixed plastic solution A;
s3, preparing a mixed plastic solution B: uniformly mixing the remaining two thirds of bisphenol A epoxy vinyl resin, phenolic resin and polypropylene with color master batch, carboxyl nitrile rubber, an anti-embrittlement agent, palmitic acid, a mildew preventive and a coupling agent, and then melting at 190-230 ℃ to obtain a mixed plastic solution B;
s4, mixing plastic solutions A and B: uniformly mixing the mixed plastic solution A and the mixed plastic solution B, feeding the mixture into a kneading machine for banburying at the temperature of between 150 and 190 ℃ for 30 to 40 minutes, feeding the mixture into a cold mixer for stirring and cooling to the room temperature of between 20 and 30 ℃, and then discharging;
s5, granulation: conveying the material obtained in the step (S4) to a double-screw extruder, extruding and granulating at 160-180 ℃, and then drying to obtain corrosion-resistant plastic particles;
s6, finished product: putting the corrosion-resistant plastic particles into a forming machine on a pipe production line, drawing, cooling and shaping to form an outer pipe and an inner pipe according to various sizes of production specifications, winding a plastic-coated steel belt between the outer pipe and the inner pipe in a hot welding mode to bond and compound the outer wall of the inner pipe, the plastic-coated steel belt and the inner wall of the outer pipe, and finally cooling and shaping to obtain the steel belt reinforced spiral corrugated pipe.
As a further preferred aspect of the present invention: in the step S1, the adhesive is melted at a temperature of 160 to 230 ℃ in the treatment of the steel strip.
As further preferable in the present technical solution: in the step S1, the steel strip is treated, and the cooling mode of the steel strip is as follows: and cooling the coated steel strip by adopting cold air at the temperature of 30-60 ℃.
The invention has the technical effects and advantages that:
according to the invention, the glass fiber, the bisphenol A epoxy vinyl resin, the phenolic resin and the polypropylene are heated and melted and then mixed to form the mixed plastic solution A, and the mixed plastic solution A formed after the components in the glass fiber, the bisphenol A epoxy vinyl resin, the phenolic resin and the polypropylene are reacted with each other has good corrosion resistance, so that the manufactured steel belt reinforced spiral corrugated pipe has strong corrosion resistance, can effectively resist the corrosion of acid, alkali, salt, oil and a solvent with common concentration, and meanwhile, the problem of poor heat resistance of the mixed plastic solution A can be effectively improved by adding the modified graphene and the silicon carbide micro powder, and the thermal conductivity is greatly improved.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
80 parts of bisphenol A epoxy vinyl resin, 30 parts of phenolic resin, 20 parts of polypropylene, 34 parts of glass fiber, 6 parts of modified graphene, 3 parts of silicon carbide micro powder, 5 parts of color master, 2 parts of coupling agent, 20 parts of carboxyl nitrile rubber, 1 part of anti-embrittlement agent palmitic acid and 0.5 part of mildew preventive.
The preparation method comprises the following steps:
s1, processing a steel strip: heating a steel belt to 200-300 ℃, then carrying out heat preservation treatment, coating an adhesive melted at the temperature of 160-230 ℃ on the surface of the heated steel belt, after the coating is finished, cooling the coated steel belt by adopting cold air at the temperature of 30-60 ℃ to obtain a plastic coated steel belt, drawing the cooled plastic coated steel belt out at a constant speed of 0.5-8 m/min, and processing the plastic coated steel belt into a waveform structure;
s2, preparing a mixed plastic solution A: weighing glass fiber, modified graphene and silicon carbide micropowder according to a proportion, then weighing one third of bisphenol A epoxy vinyl resin, phenolic resin and polypropylene according to a proportion, feeding the weighed raw materials into a mixer for mixing and stirring uniformly, and then melting the uniformly stirred materials at the temperature of 190-230 ℃ to obtain a mixed plastic solution A;
s3, preparing a mixed plastic solution B: uniformly mixing the remaining two thirds of bisphenol A epoxy vinyl resin, phenolic resin and polypropylene with color master batch, carboxyl nitrile rubber, an anti-embrittlement agent, palmitic acid, a mildew preventive and a coupling agent, and then melting at 190-230 ℃ to obtain a mixed plastic solution B;
s4, mixing plastic solutions A and B: uniformly mixing the mixed plastic solution A and the mixed plastic solution B, feeding the mixture into a kneading machine for banburying at 150-190 ℃ for 30-40 minutes, feeding the mixture into a cold mixer, stirring and cooling to 20-30 ℃ and then discharging;
s5, granulation: conveying the material obtained in the step (S4) to a double-screw extruder, extruding and granulating at 160-180 ℃, and then drying to obtain corrosion-resistant plastic particles;
s6, finished product: the method comprises the steps of putting corrosion-resistant plastic particles into a forming machine on a pipe production line, drawing, cooling and shaping to form an outer pipe and an inner pipe according to various sizes of production specifications, winding a plastic-coated steel belt between the outer pipe and the inner pipe in a hot-melt mode to enable the outer wall of the inner pipe, the plastic-coated steel belt and the inner wall of the outer pipe to be bonded and compounded, and finally cooling and shaping to obtain the steel belt reinforced spiral corrugated pipe.
Example 2
100 parts of bisphenol A epoxy vinyl resin, 45 parts of phenolic resin, 27 parts of polypropylene, 38 parts of glass fiber, 9 parts of modified graphene, 10 parts of silicon carbide micro powder, 8 parts of color master, 7 parts of coupling agent, 30 parts of carboxyl nitrile rubber, 1.5 parts of anti-embrittlement agent palmitic acid and 1 part of mildew preventive.
The preparation method comprises the following steps:
s1, treating a steel strip: heating a steel belt to 200-300 ℃, then carrying out heat preservation treatment, coating an adhesive melted at the temperature of 160-230 ℃ on the surface of the heated steel belt, after the coating is finished, cooling the coated steel belt by adopting cold air at the temperature of 30-60 ℃ to obtain a plastic coated steel belt, drawing the cooled plastic coated steel belt out at a constant speed of 0.5-8 m/min, and processing the plastic coated steel belt into a waveform structure;
s2, preparing a mixed plastic solution A: weighing glass fiber, modified graphene and silicon carbide micropowder according to a proportion, then weighing one third of bisphenol A epoxy vinyl resin, phenolic resin and polypropylene according to a proportion, feeding the weighed raw materials into a mixer for mixing and stirring uniformly, and then melting the uniformly stirred materials at the temperature of 190-230 ℃ to obtain a mixed plastic solution A;
s3, preparing a mixed plastic solution B: uniformly mixing the remaining two thirds of bisphenol A epoxy vinyl resin, phenolic resin and polypropylene with color master batch, carboxyl nitrile rubber, an anti-embrittlement agent, palmitic acid, a mildew preventive and a coupling agent, and then melting at 190-230 ℃ to obtain a mixed plastic solution B;
s4, mixing plastic solutions A and B: uniformly mixing the mixed plastic solution A and the mixed plastic solution B, feeding the mixture into a kneading machine for banburying at the temperature of between 150 and 190 ℃ for 30 to 40 minutes, feeding the mixture into a cold mixer for stirring and cooling to the room temperature of between 20 and 30 ℃, and then discharging;
s5, granulation: conveying the material obtained in the step (S4) to a double-screw extruder, extruding and granulating at 160-180 ℃, and then drying to obtain corrosion-resistant plastic particles;
s6, finished product: putting the corrosion-resistant plastic particles into a forming machine on a pipe production line, drawing, cooling and shaping to form an outer pipe and an inner pipe according to various sizes of production specifications, winding a plastic-coated steel belt between the outer pipe and the inner pipe in a hot welding mode to bond and compound the outer wall of the inner pipe, the plastic-coated steel belt and the inner wall of the outer pipe, and finally cooling and shaping to obtain the steel belt reinforced spiral corrugated pipe.
Example 3
120 parts of bisphenol A epoxy vinyl resin, 60 parts of phenolic resin, 34 parts of polypropylene, 42 parts of glass fiber, 12 parts of modified graphene, 7 parts of silicon carbide micro powder, 10 parts of color master, 12 parts of coupling agent, 40 parts of carboxyl nitrile rubber, 2 parts of anti-embrittlement agent palmitic acid and 1.5 parts of mildew preventive.
The preparation method comprises the following steps:
s1, treating a steel strip: heating a steel belt to 200-300 ℃, then carrying out heat preservation treatment, coating an adhesive melted at the temperature of 160-230 ℃ on the surface of the heated steel belt, after the coating is finished, cooling the coated steel belt by adopting cold air at the temperature of 30-60 ℃ to obtain a plastic coated steel belt, drawing the cooled plastic coated steel belt out at a constant speed of 0.5-8 m/min, and processing the plastic coated steel belt into a waveform structure;
s2, preparing a mixed plastic solution A: weighing glass fiber, modified graphene and silicon carbide micropowder according to a proportion, then weighing one third of bisphenol A epoxy vinyl resin, phenolic resin and polypropylene according to a proportion, feeding the weighed raw materials into a mixer for mixing and stirring uniformly, and then melting the uniformly stirred materials at the temperature of 190-230 ℃ to obtain a mixed plastic solution A;
s3, preparing a mixed plastic solution B: uniformly mixing the remaining two thirds of bisphenol A epoxy vinyl resin, phenolic resin and polypropylene with color master batch, carboxyl nitrile rubber, an anti-embrittlement agent, palmitic acid, a mildew preventive and a coupling agent, and then melting at 190-230 ℃ to obtain a mixed plastic solution B;
s4, mixing plastic solutions A and B: uniformly mixing the mixed plastic solution A and the mixed plastic solution B, feeding the mixture into a kneading machine for banburying at the temperature of between 150 and 190 ℃ for 30 to 40 minutes, feeding the mixture into a cold mixer for stirring and cooling to the room temperature of between 20 and 30 ℃, and then discharging;
s5, granulation: conveying the material obtained in the step (S4) to a double-screw extruder, extruding and granulating at 160-180 ℃, and then drying to obtain corrosion-resistant plastic particles;
s6, finished product: putting the corrosion-resistant plastic particles into a forming machine on a pipe production line, drawing, cooling and shaping to form an outer pipe and an inner pipe according to various sizes of production specifications, winding a plastic-coated steel belt between the outer pipe and the inner pipe in a hot welding mode to bond and compound the outer wall of the inner pipe, the plastic-coated steel belt and the inner wall of the outer pipe, and finally cooling and shaping to obtain the steel belt reinforced spiral corrugated pipe.
Example 4
110 parts of bisphenol A epoxy vinyl resin, 50 parts of phenolic resin, 33 parts of polypropylene, 340 parts of glass fiber, 10 parts of modified graphene, 6 parts of silicon carbide micro powder, 9 parts of color master batch, 5 parts of coupling agent, 34 parts of carboxyl nitrile rubber, 1.8 parts of anti-embrittlement agent palmitic acid and 1.2 parts of mildew preventive.
The preparation method comprises the following steps:
s1, treating a steel strip: heating a steel belt to 200-300 ℃, then carrying out heat preservation treatment, coating an adhesive melted at the temperature of 160-230 ℃ on the surface of the heated steel belt, after the coating is finished, cooling the coated steel belt by adopting cold air at the temperature of 30-60 ℃ to obtain a plastic coated steel belt, drawing the cooled plastic coated steel belt out at a constant speed of 0.5-8 m/min, and processing the plastic coated steel belt into a waveform structure;
s2, preparing a mixed plastic solution A: weighing glass fiber, modified graphene and silicon carbide micropowder according to a proportion, then weighing one third of bisphenol A epoxy vinyl resin, phenolic resin and polypropylene according to a proportion, feeding the weighed raw materials into a mixer for mixing and stirring uniformly, and then melting the uniformly stirred materials at the temperature of 190-230 ℃ to obtain a mixed plastic solution A;
s3, preparing a mixed plastic solution B: uniformly mixing the remaining two thirds of bisphenol A epoxy vinyl resin, phenolic resin and polypropylene with color master batch, carboxyl nitrile rubber, an anti-embrittlement agent, palmitic acid, a mildew preventive and a coupling agent, and then melting at 190-230 ℃ to obtain a mixed plastic solution B;
s4, mixing plastic solutions A and B: uniformly mixing the mixed plastic solution A and the mixed plastic solution B, feeding the mixture into a kneading machine for banburying at 150-190 ℃ for 30-40 minutes, feeding the mixture into a cold mixer, stirring and cooling to 20-30 ℃ and then discharging;
s5, granulation: conveying the material obtained in the step (S4) to a double-screw extruder, extruding and granulating at 160-180 ℃, and then drying to obtain corrosion-resistant plastic particles;
s6, finished product: putting the corrosion-resistant plastic particles into a forming machine on a pipe production line, drawing, cooling and shaping to form an outer pipe and an inner pipe according to various sizes of production specifications, winding a plastic-coated steel belt between the outer pipe and the inner pipe in a hot welding mode to bond and compound the outer wall of the inner pipe, the plastic-coated steel belt and the inner wall of the outer pipe, and finally cooling and shaping to obtain the steel belt reinforced spiral corrugated pipe.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (4)
1. A preparation method of a steel strip reinforced helical bellows with strong corrosion resistance is characterized by comprising the following steps: the method comprises the following steps:
s1, treating a steel strip: heating a steel belt to 200-300 ℃, carrying out heat preservation treatment, coating the molten adhesive on the surface of the heated steel belt, cooling the steel belt after coating to obtain a plastic-coated steel belt, drawing the cooled plastic-coated steel belt at a constant speed of 0.5-8 m/min, and processing the plastic-coated steel belt into a waveform structure;
s2, preparing a mixed plastic solution A: weighing glass fiber, modified graphene and silicon carbide micropowder according to a proportion, then weighing one third of bisphenol A epoxy vinyl resin, phenolic resin and polypropylene according to a proportion, feeding the weighed raw materials into a mixer for mixing and stirring uniformly, and then melting the uniformly stirred materials at the temperature of 190-230 ℃ to obtain a mixed plastic solution A;
s3, preparing a mixed plastic solution B: uniformly mixing the remaining two thirds of bisphenol A epoxy vinyl resin, phenolic resin and polypropylene with color master batch, carboxyl nitrile rubber, an anti-embrittlement agent, palmitic acid, a mildew preventive and a coupling agent, and then melting at 190-230 ℃ to obtain a mixed plastic solution B;
s4, mixing plastic solutions A and B: uniformly mixing the mixed plastic solution A and the mixed plastic solution B, feeding the mixture into a kneading machine for banburying at the temperature of between 150 and 190 ℃ for 30 to 40 minutes, feeding the mixture into a cold mixer for stirring and cooling to the room temperature of between 20 and 30 ℃, and then discharging;
s5, granulation: conveying the material obtained in the step (S4) to a double-screw extruder, extruding and granulating at 160-180 ℃, and then drying to obtain corrosion-resistant plastic particles;
s6, finished product: putting the corrosion-resistant plastic particles into a forming machine on a pipe production line, drawing, cooling and shaping to form an outer pipe and an inner pipe according to various sizes of production specifications, winding a plastic-coated steel belt between the outer pipe and the inner pipe in a hot welding mode to bond and compound the outer wall of the inner pipe, the plastic-coated steel belt and the inner wall of the outer pipe, and finally cooling and shaping to obtain the steel belt reinforced spiral corrugated pipe.
2. The method for preparing a steel strip reinforced helical bellows with strong corrosion resistance according to claim 1, wherein the method comprises the following steps: in the step S1, the adhesive is melted at a temperature of 160 to 230 ℃ in the treatment of the steel strip.
3. The method for preparing a steel strip reinforced helical bellows with strong corrosion resistance according to claim 1, wherein the method comprises the following steps: in the step S1, the steel strip is treated, and the cooling mode of the steel strip is as follows: and cooling the coated steel strip by adopting cold air at the temperature of 30-60 ℃.
4. The method for preparing a steel strip reinforced helical bellows with strong corrosion resistance according to claim 1, wherein the method comprises the following steps: the outer pipe and the inner pipe are composed of the following components in parts by weight:
80-120 parts of bisphenol A epoxy vinyl resin, 30-60 parts of phenolic resin, 20-34 parts of polypropylene, 34-42 parts of glass fiber, 6-12 parts of modified graphene, 3-7 parts of silicon carbide micro powder, 5-10 parts of color master, 2-12 parts of coupling agent, 20-40 parts of carboxyl nitrile rubber, 1-2 parts of anti-embrittling agent palmitic acid and 0.5-1.5 parts of mildew preventive.
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| CN202110771421.4A CN113531227B (en) | 2021-07-08 | 2021-07-08 | Preparation method of steel strip reinforced spiral corrugated pipe with strong corrosion resistance |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2544194B2 (en) * | 1988-11-26 | 1996-10-16 | 史朗 金尾 | Pressure resistant spiral corrugated tube |
| CN104482329B (en) * | 2014-12-11 | 2017-05-03 | 周成纤 | Steel-plastic composite thread corrugated pipe |
| CN108892863A (en) * | 2018-06-23 | 2018-11-27 | 湖州五石科技有限公司 | A kind of heat-resisting material |
| CN110358241A (en) * | 2019-07-16 | 2019-10-22 | 湖北省峰华科技有限公司 | A kind of steel strip reinforced bellows and preparation method thereof |
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