CN115027102B - High-strength medium conveying pipeline with temperature and preparation method thereof - Google Patents

High-strength medium conveying pipeline with temperature and preparation method thereof Download PDF

Info

Publication number
CN115027102B
CN115027102B CN202210511895.XA CN202210511895A CN115027102B CN 115027102 B CN115027102 B CN 115027102B CN 202210511895 A CN202210511895 A CN 202210511895A CN 115027102 B CN115027102 B CN 115027102B
Authority
CN
China
Prior art keywords
layer
heat
parts
conductivity
pert
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202210511895.XA
Other languages
Chinese (zh)
Other versions
CN115027102A (en
Inventor
褚展鹏
霍福磊
褚展宙
宋锵
王俊程
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Linhai Weixing New Building Materials Co Ltd
Zhejiang Weixing New Building Materials Co Ltd
Original Assignee
Linhai Weixing New Building Materials Co Ltd
Zhejiang Weixing New Building Materials Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Linhai Weixing New Building Materials Co Ltd, Zhejiang Weixing New Building Materials Co Ltd filed Critical Linhai Weixing New Building Materials Co Ltd
Priority to CN202210511895.XA priority Critical patent/CN115027102B/en
Publication of CN115027102A publication Critical patent/CN115027102A/en
Application granted granted Critical
Publication of CN115027102B publication Critical patent/CN115027102B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a general shape other than plane
    • B32B1/08—Tubular products
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/065—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1207—Heat-activated adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/005—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile
    • B32B9/007—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile comprising carbon, e.g. graphite, composite carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/045—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/046—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0085—Use of fibrous compounding ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
    • C08J9/102—Azo-compounds
    • C08J9/103—Azodicarbonamide
    • 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
    • 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
    • F16L9/12—Rigid pipes of plastics with or without reinforcement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1207—Heat-activated adhesive
    • B32B2037/1215—Hot-melt adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/025—Polyolefin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2597/00—Tubular articles, e.g. hoses, pipes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/10—Geothermal energy

Abstract

The invention discloses a high-strength medium conveying pipeline with temperature and a preparation method thereof, wherein the pipeline sequentially comprises a rigidity enhancement layer, a PERT modified foaming layer, an anisotropic planar high-heat-conductivity graphene layer and an inner core pipe from outside to inside; the formula of the PERT modified foaming layer comprises the following raw materials in parts by weight: 100 parts of matrix resin A, 1-3 parts of foaming agent, 5-10 parts of reinforcing body A, 1-3 parts of antioxidant A, 1-3 parts of dispersing agent A and 2-3 parts of coupling agent A; the anisotropic planar high-heat-conductivity graphene layer is formed by winding a graphene film high-heat-conductivity layer material, wherein the in-plane heat conductivity of the graphene film high-heat-conductivity layer material is above 400W/mK, and the vertical heat conductivity of the graphene film high-heat-conductivity layer material is 15-40W/mK. The composite pipe has better heat preservation effect by adopting the anisotropic plane high-heat-conductivity graphene layer and PERT modified foaming layer composite heat preservation technology and combining two heat transfer modes of heat conduction and heat convection.

Description

High-strength medium conveying pipeline with temperature and preparation method thereof
Technical Field
The invention belongs to the field of medium conveying pipelines with temperature, and particularly relates to a high-strength medium conveying pipeline with temperature and a preparation method thereof.
Background
In the field of industrial pipelines, certain heat preservation and functionalization requirements are required for requirements of various use conditions, such as a central heating pipeline, a coaxial sleeve of deep geothermal heat, underground of an oil field and a gathering pipeline. The prior art for realizing heat preservation at present comprises the following steps: polyurethane foaming technology and low thermal conductivity modification of pipe raw materials.
There are more or less problems with the prior art thermal insulation techniques described above. The polyurethane foaming technology has long development time, is mature, can be better suitable for the pipeline field which only needs to be insulated, such as central heating, but cannot be suitable for the field of various composite working conditions with pressure and insulation due to the fact that the material is low in strength, and the rupture of foaming micropores can be caused by the excessively high internal and external pressure, so that the insulation performance is influenced. The low thermal conductivity modification of the raw materials is an emerging technology, the technology accumulation is lacked, the formula of the partially modified raw materials is unstable, the thermal conductivity reduction range is limited or the price is high, and the practical application value is lacked at present.
Disclosure of Invention
Aiming at the technical problems existing in the prior art, the invention aims to provide a high-strength medium conveying pipeline with temperature and a preparation method thereof.
A high-strength medium conveying pipeline with temperature is characterized by sequentially comprising a rigidity enhancement layer, a PERT modified foaming layer, an anisotropic plane high-heat-conductivity graphene layer and an inner core tube from outside to inside.
The PERT modified foaming layer is a novel foaming technology, has good cell strength and stability, and comprises the following raw materials in parts by weight: 100 parts of matrix resin A, 1-3 parts of foaming agent, 5-10 parts of reinforcing body A, 1-3 parts of antioxidant A, 1-3 parts of dispersing agent A and 2-3 parts of coupling agent A; the matrix resin A is PERT resin, the reinforcement A is one or two of potassium hexatitanate whisker and aluminum borate whisker, and the foaming agent is azodicarbonamide or pentamethylene tetramine.
The anisotropic planar high-heat-conductivity graphene layer is formed by winding a graphene film high-heat-conductivity layer material, the graphene film high-heat-conductivity layer material is a novel anisotropic high-heat-conductivity material, the heat conductivity of the anisotropic high-heat-conductivity graphene layer material in the aspect of along a plane is extremely high (more than 400W/mK), but the heat conductivity performance difference in the direction perpendicular to the plane is quite large (generally only 15-40W/mK). Due to the special thermodynamic property, when the material is compounded on a pipeline, the heat transmission rate of the pipeline is accelerated along the axial direction (the transmission direction of a heat medium) of the pipeline, but the transmission rate of the heat in the pipeline is reduced along the radial direction (the heat dissipation direction from the inside to the outside) of the pipeline, and the heat insulation effect can be better when the material is compounded with a PERT modified foaming layer.
The rigidity enhancing layer is a modified rigidity enhancing PERT pipe, and the modified formula comprises the following raw materials in parts by weight: 100 parts of matrix resin B, 10-20 parts of reinforcement B, 1-3 parts of antioxidant B, 1-3 parts of dispersing agent B, 2-3 parts of coupling agent B and 5-7 parts of toughening agent; wherein the matrix resin B is one of PERT or HDPE resin powder, the reinforcing body B is one of talcum powder and barium sulfate, and the toughening agent is one of POE resin, CPE resin and ABS resin.
Further, the antioxidant A or the antioxidant B is independently selected from phenolic antioxidants 1010 or 1076.
Further, in order to ensure a good bonding strength between the rigidity-enhancing layer and the PERT-modified foamed layer, in particular, the dispersant A and the dispersant B are the same, and the coupling agent A and the coupling agent B are the same, i.e., the dispersant and the coupling agent of both of them respectively maintain the same constituent components. The dispersing agent A is any one or two mixtures of zinc stearate and barium stearate, and the coupling agent A is any one or two mixtures of aluminate, tin coupling agent and silane coupling agent.
The inner core pipe is a PERT pipe or a PE pipe, and the PERT modified foaming layer and the anisotropic plane high-heat-conductivity graphene layer and the inner core pipe are bonded by adopting hot melt adhesive, wherein the hot melt adhesive is maleic anhydride or acrylic acid ester adhesive.
The anisotropic planar high-heat-conductivity graphene layer comprises two layers of graphene film high-heat-conductivity layer materials which are wound in a crossed mode, and hot melt adhesive is coated between the two layers of graphene film high-heat-conductivity layer materials.
The preparation method of the high-strength medium conveying pipeline with temperature is characterized by comprising the following steps of:
1) Inner layer extrusion: melting and extruding PE or PERT inner layer pipe raw materials by using a single screw extruder, wherein the temperature of a machine barrel area is 180-200 ℃, the temperature of a die head area is 190-200 ℃, and then carrying out vacuum sizing and cooling;
2) Winding the middle high heat conduction layer: extruding a layer of hot melt adhesive on the outer surface of the inner layer, wherein the extruding temperature of the hot melt adhesive is 135-150 ℃, then winding two layers of crossed graphene films successively, coating the hot melt adhesive between the two layers of graphene films, and finally coating a layer of hot melt adhesive on the outer layer of the outermost graphene film;
3) PERT modified foaming layer cladding: after uniformly mixing the formula raw materials of the PERT modified foaming layer, extruding and coating the formula raw materials on the outer side of the middle high heat conduction layer by a coating machine, wherein the extrusion temperature of the coating machine is 185-195 ℃;
4) Extrusion coating of the outer rigid reinforcing layer: finally, uniformly mixing the formula raw materials of the modified stiffening PERT pipe, and extruding and coating a layer of modified stiffening PERT base material on the outer side of the PERT modified foaming layer through a coating machine, wherein the extrusion temperature is 180-190 ℃;
5) And (5) shaping, cutting and offline the coated pipe.
In the step 2), the longitudinal winding angle of the graphene film along the inner layer is 5-45 degrees, and the winding tension is 5-15N.
Compared with the prior art, the invention has the following beneficial effects:
(1) The composite heat preservation technology of the anisotropic plane high-heat-conductivity graphene layer and the PERT modified foaming layer is adopted for compounding a plurality of heat preservation modes, and two heat transfer modes of heat conduction and heat convection are considered, so that the heat preservation effect is better.
(2) Compared with the traditional polyurethane foaming technology, the PERT modified foaming layer has better foam stability and pressure resistance, and the rigidity reinforcing layer is additionally added, so that the PERT modified foaming layer is better suitable for the working conditions of pressure and heat preservation.
Drawings
FIG. 1 is a process flow diagram of the present invention for preparing a high strength medium delivery conduit with temperature.
Detailed Description
The invention will be further illustrated with reference to specific examples, but the scope of the invention is not limited thereto.
The graphene film in the examples of the present application was purchased from sixth element materials technologies, inc.
Example 1:
a high-strength medium conveying pipeline with temperature comprises a rigidity enhancement layer, a PERT modified foaming layer, an anisotropic plane high-heat-conductivity graphene layer and an inner core tube from outside to inside.
The rigidity enhancing layer is a modified rigidity enhancing PERT pipe, and the modification formula comprises the following raw materials in parts by weight: 100 parts of matrix resin B, 15 parts of reinforcement B, 2 parts of antioxidant B, 2 parts of dispersant B, 2 parts of coupling agent B and 6 parts of toughening agent. Wherein, the matrix resin B is PERT resin powder, the reinforcement B is talcum powder, the antioxidant B is phenolic antioxidant 1010, the dispersant B is zinc stearate, the coupling agent B is tin coupling agent, and the toughening agent is POE resin.
The PERT modified foaming layer comprises the following raw materials in parts by weight: 100 parts of matrix resin A, 2 parts of foaming agent, 7 parts of reinforcement A, 2 parts of antioxidant A, 2 parts of dispersing agent A and 2 parts of coupling agent A. Wherein, the matrix resin A is PERT resin, the foaming agent is azodicarbonamide, the reinforcement A is potassium hexatitanate whisker, the antioxidant A is phenolic antioxidant 1010, the dispersant A is zinc stearate, and the coupling agent A is tin coupling agent.
The anisotropic planar high-thermal-conductivity graphene layer comprises two layers of graphene film high-thermal-conductivity layer materials which are wound in a crossed mode, wherein the in-plane thermal conductivity of the graphene film high-thermal-conductivity layer materials is above 400W/mK, and the vertical thermal conductivity of the graphene film high-thermal-conductivity layer materials is 15-40W/mK.
The inner core pipe is PE pipe.
The preparation method of the high-strength medium conveying pipeline with temperature comprises the following steps (the process flow is shown in figure 1):
1) Inner layer extrusion: extruding PE pipe by a single screw extruder, wherein the temperature of a machine barrel area is 190 ℃, the temperature of a die head area is 195 ℃, and then carrying out vacuum sizing and cooling;
2) Winding the middle high heat conduction layer: and extruding a layer of hot melt adhesive on the outer surface of the inner layer, wherein the extruding temperature of the hot melt adhesive is 140 ℃, and then winding two layers of crossed graphene films successively, wherein the width of each graphene film is 20mm, the longitudinal winding angle of each graphene film along the inner layer is +/-30 degrees, and the winding tension is 10N. A layer of hot melt adhesive is coated between the two layers of graphene films, and finally, the film outer layer of the outermost graphene film is coated with a layer of hot melt adhesive; the hot melt adhesive adopts maleic anhydride.
3) PERT modified foaming layer cladding: after uniformly mixing the formula raw materials of the PERT modified foaming layer, extruding and coating the formula raw materials on the outer side of the middle high heat conduction layer by a coating machine, wherein the extrusion temperature of the coating machine is 190 ℃;
4) Extrusion coating of the outer rigid reinforcing layer: finally, uniformly mixing the formula raw materials of the modified stiffening PERT pipe, and extruding and coating a layer of modified stiffening PERT base material on the outer side of the PERT modified foaming layer through a coating machine, wherein the extrusion temperature is 185 ℃;
5) And (5) shaping, cutting and offline the coated pipe.
The composite tube prepared in example 1 had the following specifications: the outer diameter is 110mm, the inner diameter is 88mm, the wall thickness is 11mm, wherein the rigidity enhancement layer is 3mm, the PERT modified foaming layer is 3mm, the graphene layer (containing a hot melt adhesive layer) is 2mm, and the inner core tube is 3mm.
Comparative example 1:
a high strength medium conveying pipe with temperature, the preparation of which is repeated in example 1, except that "the PERT modified foaming layer in example 1 is replaced with a conventional PERT polyurethane foaming layer", and the rest is the same as in example 1. Comparative example 1 a conventional per polyurethane foam layer was formulated as follows: 100 parts of matrix resin A and 2 parts of foaming agent, wherein the matrix resin A is PERT resin, and the foaming agent is azodicarbonamide.
Comparative example 2:
a high strength medium conveying pipe with temperature was prepared in the same manner as in example 1 except that "comparative example 2 was not subjected to the step 4) extrusion coating operation of the outer layer rigidity enhancing layer".
Comparative example 3:
a high strength medium carrying pipe with temperature was prepared in the same manner as in example 1 except that "comparative example 3 was not subjected to the step 3) of winding the intermediate high heat conductive layer".
Application example 1:
the composite pipes prepared in example 1 and comparative examples 1 to 3 were tested for heat-insulating property and external pressure-resistant property, respectively.
The method for testing the heat-resistant and heat-insulating performance comprises the following steps: one end of the composite pipeline is sealed, hot water at 90 ℃ is injected into the composite pipeline, a temperature control probe for measuring the water temperature is inserted into the middle of the composite pipeline, and then the other end of the composite pipeline is also sealed rapidly. Immersing the treated composite pipeline into a constant-temperature water bath box filled with warm water at 40 ℃, measuring temperature drop through a temperature control probe in the composite pipeline, comparing heat preservation performance, and testing the temperature drop data result after 1 h.
The test standard of the external pressure resistance of the test composite pipeline is ASTMD2924.
The composite pipes prepared in example 1 and comparative examples 1-3, and the performance test results tested according to the above method are summarized in table 1.
As can be seen from the results in Table 1, the composite pipe prepared in example 1 of the present invention has excellent heat preservation and pressure resistance.
What has been described in this specification is merely an enumeration of possible forms of implementation for the inventive concept and may not be considered limiting of the scope of the present invention to the specific forms set forth in the examples.

Claims (5)

1. The high-strength medium conveying pipeline with the temperature is characterized by sequentially comprising a rigidity enhancement layer, a PERT modified foaming layer, an anisotropic plane high-heat-conductivity graphene layer and an inner core pipe from outside to inside; the formula of the PERT modified foaming layer comprises the following raw materials in parts by weight: 100 parts of matrix resin A, 1-3 parts of foaming agent, 5-10 parts of reinforcing body A, 1-3 parts of antioxidant A, 1-3 parts of dispersing agent A and 2-3 parts of coupling agent A; the matrix resin A is PERT resin, the reinforcement A is one or two of potassium hexatitanate whisker and aluminum borate whisker, the anisotropic plane high-heat-conductivity graphene layer is formed by winding a graphene film high-heat-conductivity layer material, and the in-plane heat conductivity of the graphene film high-heat-conductivity layer material is above 400W/mK and the vertical heat conductivity of the graphene film high-heat-conductivity layer material is 15-40W/mK;
the rigidity enhancing layer is a modified rigidity enhancing PERT pipe, and the modification formula comprises the following raw materials in parts by weight: 100 parts of matrix resin B, 10-20 parts of reinforcement B, 1-3 parts of antioxidant B, 1-3 parts of dispersing agent B, 2-3 parts of coupling agent B and 5-7 parts of toughening agent; wherein the matrix resin B is one of PERT or HDPE resin powder, the reinforcing body B is one of talcum powder and barium sulfate, and the toughening agent is one of POE resin, CPE resin and ABS resin;
the antioxidant A or the antioxidant B is independently selected from phenolic antioxidants 1010 or 1076, the dispersant A and the dispersant B are the same, and the dispersant A is any one or two mixtures of zinc stearate and barium stearate; the coupling agent A and the coupling agent B are the same, and the coupling agent A is any one or two of aluminate, tin coupling agent and silane coupling agent;
the inner core pipe is a PERT pipe or a PE pipe, and the PERT modified foaming layer and the anisotropic plane high-heat-conductivity graphene layer and the inner core pipe are bonded by adopting hot melt adhesive, wherein the hot melt adhesive is maleic anhydride or acrylic acid ester adhesive.
2. A high strength medium conveying pipe with temperature as claimed in claim 1, wherein the foaming agent is azodicarbonamide or pentamethylene tetramine.
3. The high-strength medium conveying pipeline with temperature as claimed in claim 1, wherein the anisotropic planar high-heat-conductivity graphene layer comprises two layers of graphene film high-heat-conductivity layer materials which are cross-wound, and hot melt adhesive is coated between the two layers of graphene film high-heat-conductivity layer materials.
4. The method for preparing the high-strength medium conveying pipeline with temperature according to claim 1, which is characterized by comprising the following steps:
1) Inner layer extrusion: melting and extruding PE or PERT inner layer pipe raw materials by using a single screw extruder, wherein the temperature of a machine barrel area is 180-200 ℃, the temperature of a die head area is 190-200 ℃, and then carrying out vacuum sizing and cooling;
2) Winding the middle high heat conduction layer: extruding a layer of hot melt adhesive on the outer surface of the inner layer, wherein the extruding temperature of the hot melt adhesive is 135-150 ℃, then winding two layers of crossed graphene films successively, coating the hot melt adhesive between the two layers of graphene films, and finally coating a layer of hot melt adhesive on the outer layer of the outermost graphene film;
3) PERT modified foaming layer cladding: after uniformly mixing the formula raw materials of the PERT modified foaming layer, extruding and coating the formula raw materials on the outer side of the middle high heat conduction layer by a coating machine, wherein the extrusion temperature of the coating machine is 185-195 ℃;
4) Extrusion coating of the outer rigid reinforcing layer: finally, uniformly mixing the formula raw materials of the modified stiffening PERT pipe, and extruding and coating a layer of modified stiffening PERT base material on the outer side of the PERT modified foaming layer through a coating machine, wherein the extrusion temperature is 180-190 ℃;
5) And (5) shaping, cutting and offline the coated pipe.
5. The method for manufacturing a high-strength medium conveying pipeline with temperature according to claim 4, wherein in the step 2), the winding angle of the graphene film in the longitudinal direction of the inner layer is 5-45 degrees, and the winding tension is 5-15N.
CN202210511895.XA 2022-05-12 2022-05-12 High-strength medium conveying pipeline with temperature and preparation method thereof Active CN115027102B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210511895.XA CN115027102B (en) 2022-05-12 2022-05-12 High-strength medium conveying pipeline with temperature and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210511895.XA CN115027102B (en) 2022-05-12 2022-05-12 High-strength medium conveying pipeline with temperature and preparation method thereof

Publications (2)

Publication Number Publication Date
CN115027102A CN115027102A (en) 2022-09-09
CN115027102B true CN115027102B (en) 2024-03-19

Family

ID=83120909

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210511895.XA Active CN115027102B (en) 2022-05-12 2022-05-12 High-strength medium conveying pipeline with temperature and preparation method thereof

Country Status (1)

Country Link
CN (1) CN115027102B (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105570560A (en) * 2016-03-16 2016-05-11 刘志光 Graphene-enhanced thermal conductance composite polyolefin pipe
CN106633302A (en) * 2016-12-20 2017-05-10 天津中财型材有限责任公司 Oxygen-resistant geothermal pipe with high thermal conducting function and scale preventing function
CN107152567A (en) * 2016-03-02 2017-09-12 青岛华仕达机器有限公司 A kind of flexible polyurethane insulating tube and its production technology
CN108373559A (en) * 2018-02-02 2018-08-07 桂林理工大学 A kind of graphene/carbon nano-tube collaboration enhancing polyethylene pipe and preparation method thereof
CN209309492U (en) * 2018-12-13 2019-08-27 宁夏青龙塑料管材有限公司 A kind of expanded polystyrene (EPS) direct-burried thermal insulating plastic composite tube road
KR20190110883A (en) * 2018-03-21 2019-10-01 재단법인 한국기계전기전자시험연구원 Pipeline module for storaging ultra high purity gas and method of manufactruing the same
CN209469896U (en) * 2018-12-21 2019-10-08 浙江沃坦科水暖设备有限公司 A kind of novel multi-pipeline mixing heat preservation piping
CN110594496A (en) * 2019-03-30 2019-12-20 河北汇锐管业有限公司 High-pressure-resistant anti-seepage heat-insulation composite pipeline and preparation method thereof
CN111425672A (en) * 2020-04-08 2020-07-17 上海英泰塑胶股份有限公司 Heat-preservation integrated continuous fiber prepreg tape reinforced composite pipe and processing method
CN114321511A (en) * 2021-12-14 2022-04-12 临海伟星新型建材有限公司 Capillary wound heat-preservation plastic pipeline and preparation method thereof

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107152567A (en) * 2016-03-02 2017-09-12 青岛华仕达机器有限公司 A kind of flexible polyurethane insulating tube and its production technology
CN105570560A (en) * 2016-03-16 2016-05-11 刘志光 Graphene-enhanced thermal conductance composite polyolefin pipe
CN106633302A (en) * 2016-12-20 2017-05-10 天津中财型材有限责任公司 Oxygen-resistant geothermal pipe with high thermal conducting function and scale preventing function
CN108373559A (en) * 2018-02-02 2018-08-07 桂林理工大学 A kind of graphene/carbon nano-tube collaboration enhancing polyethylene pipe and preparation method thereof
KR20190110883A (en) * 2018-03-21 2019-10-01 재단법인 한국기계전기전자시험연구원 Pipeline module for storaging ultra high purity gas and method of manufactruing the same
CN209309492U (en) * 2018-12-13 2019-08-27 宁夏青龙塑料管材有限公司 A kind of expanded polystyrene (EPS) direct-burried thermal insulating plastic composite tube road
CN209469896U (en) * 2018-12-21 2019-10-08 浙江沃坦科水暖设备有限公司 A kind of novel multi-pipeline mixing heat preservation piping
CN110594496A (en) * 2019-03-30 2019-12-20 河北汇锐管业有限公司 High-pressure-resistant anti-seepage heat-insulation composite pipeline and preparation method thereof
CN111425672A (en) * 2020-04-08 2020-07-17 上海英泰塑胶股份有限公司 Heat-preservation integrated continuous fiber prepreg tape reinforced composite pipe and processing method
CN114321511A (en) * 2021-12-14 2022-04-12 临海伟星新型建材有限公司 Capillary wound heat-preservation plastic pipeline and preparation method thereof

Also Published As

Publication number Publication date
CN115027102A (en) 2022-09-09

Similar Documents

Publication Publication Date Title
CN102367353B (en) Low thermal conductivity composite thermal insulation paint and preparation method thereof
CN110951142B (en) High-thermal-conductivity radiation crosslinked polyethylene pipe and preparation method and application thereof
CN102382554B (en) Heat preservation and insulation heavy duty anti-corrosion coating with low thermal conductivity and preparation method thereof
CN110131487B (en) Glass fiber PE composite belt reinforced PVC composite pipeline and preparation method thereof
CN114321511B (en) Capillary winding heat-insulating plastic pipeline and preparation method thereof
CN102650354B (en) Aluminum-plastic composite pipe with high strength and high heat conductivity
WO2022121547A1 (en) High-thermal-conductivity reinforced polyphenylene sulfide composite material and preparation method therefor
CN115027102B (en) High-strength medium conveying pipeline with temperature and preparation method thereof
CN103029335A (en) High-barrier composite hose and manufacturing method thereof
CN109093906B (en) Polyurethane foaming prefabricated direct-buried heat insulation composite plastic pipe and preparation method thereof
CN105385007A (en) Preparation method of polyethylene pipe for delivering chemical products
CN109677069B (en) Multilayer composite high-thermal-conductivity irradiation crosslinked floor heating pipe and preparation method thereof
CN114957858B (en) Plastic soft core special for hydraulic rubber pipe production industry and production method thereof
CN109334040B (en) Method for manufacturing fiber tube
CN106380658A (en) PE corrugated pipe with strong pressure resistance and preparation method thereof
CN205208043U (en) Continuous fibers hot oil line
CN114440012A (en) Polypropylene composite pipe and preparation method and application thereof
CN207161983U (en) A kind of high-efficiency insulated pipe
CN206918463U (en) A kind of idle call Teflon multiple tube
CN111271526A (en) Antibacterial composite pipe and preparation method thereof
CN114484090B (en) Pressure-resistant foam plastic foaming heat-insulating pipe and preparation method thereof
EP4317833A1 (en) Piping for adapted thermal conductivity
CN110815767A (en) Manufacturing method of heat-resistant polyethylene composite pipe
CN114623293B (en) High-strength HDPE winding pipe with spiral torsion structure
CN115071188A (en) Deep geothermal heat-insulation composite pipeline and preparation method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant