CN112283461A - Modified epoxy phenolic aldehyde high-temperature thermal recovery ground pipeline - Google Patents
Modified epoxy phenolic aldehyde high-temperature thermal recovery ground pipeline Download PDFInfo
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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
- F16L9/12—Rigid pipes of plastics with or without reinforcement
- F16L9/123—Rigid pipes of plastics with or without reinforcement with four layers
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- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/001—Pipes; Pipe joints
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- C08L13/00—Compositions of rubbers containing carboxyl groups
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- 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
- C08L23/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C08L23/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
- C08L23/22—Copolymers of isobutene; Butyl rubber ; Homo- or copolymers of other iso-olefins
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- C08L7/00—Compositions of natural rubber
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
- C09D161/04—Condensation polymers of aldehydes or ketones with phenols only
- C09D161/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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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
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/06—Protection of pipes or objects of similar shape against external or internal damage or wear against wear
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2206—Oxides; Hydroxides of metals of calcium, strontium or barium
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- 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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- 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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
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Abstract
The invention discloses a modified epoxy phenolic aldehyde high-temperature thermal recovery ground pipeline, which relates to the technical field of petroleum thermal recovery pipelines. This modified epoxy phenolic aldehyde high temperature thermal recovery ground pipeline, epoxy resin and phenolic resin carry out modification treatment in the coating raw materials, the epoxy modified phenolic resin that the modification obtained has good heat resistance and wear resistance, can deal with the challenge that sand storm harassment and day and night difference in temperature are big, be fit for widelys popularize and use in each oil field of china, cold vulcanization method has been used in the aspect of the technology to the pipe billet of extrusion moulding when the rubber vulcanization is handled and impregnated, reached two kinds of effects of cooling and vulcanization simultaneously, and then promoted the production efficiency of this technology.
Description
Technical Field
The invention relates to the technical field of petroleum thermal recovery, in particular to a modified epoxy phenolic aldehyde high-temperature thermal recovery ground pipeline.
Background
The thermal recovery of petroleum, namely the thermal flooding of thick oil, refers to an oil displacement method which is adopted by aiming at a thick oil field and has the advantages of effectively improving the temperature of the crude oil in the stratum and reducing the viscosity of the crude oil, thereby increasing the fluidity ratio of the stratum oil and increasing the recovery ratio.
In the process of thermal recovery of petroleum, special pipelines are used for conveying thick oil, the pipelines need to be tested at high temperature and greasy dirt, and due to the particularity of the positions of oil fields in China, the pipelines also have the problems of high-temperature exposure, low-temperature frost cracking, wind and sand intrusion and large day-night temperature difference, most thick oil conveying pipelines have the problems of easy damage and blockage under the environment, the service life is short, and more troubles are brought in the actual thermal recovery operation; at present, the production process of the pipeline in China also has great defects, such as the problems of various steps, low production efficiency, complex operation, harsh conditions and the like, and the produced pipeline is also difficult to overcome the challenges in the environment and is not beneficial to popularization and mass production.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a modified epoxy phenolic aldehyde high-temperature thermal production ground pipeline, and the prepared thick oil conveying pipeline has the advantages of high strength, high toughness, oil stain resistance, high temperature resistance, low temperature resistance, wear resistance and the like, and solves the problems of low production efficiency, complicated steps and unqualified quality of the produced pipeline in the prior art.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: the modified epoxy phenolic aldehyde high-temperature thermal production ground pipeline consists of an outer coating, an outer adhesive layer, a framework layer, an inner adhesive layer and an inner coating, wherein the components of the outer coating and the inner coating are the same, and the preparation process comprises the following steps:
s1, first mixing: putting the raw materials of the inner rubber layer in corresponding parts into an internal mixer to mix, and mixing to obtain an inner rubber layer colloid, wherein the mixing temperature is 70-90 ℃, the rotating speed of a rotor of the internal mixer is 50-70r/min, the mixing time is 9-15min, and the upper plug pressure of the internal mixer is 0.6-0.8 mpa; and (4) repeating the steps to mix the raw materials of the outer rubber layer, and mixing to obtain an outer rubber layer colloid under the same mixing conditions as the raw materials of the inner rubber layer.
S2, vulcanization: and mixing the vulcanization additive in the corresponding parts with the inner rubber layer colloid prepared in the step S1 to obtain a mixture of the inner rubber layer colloid and the vulcanization additive, and mixing the vulcanization additive in the same parts with the outer rubber layer colloid to obtain a mixture of the outer rubber layer colloid and the vulcanization additive.
S3, second mixing: the mixture of the inner rubber layer colloid and the vulcanization additive prepared in the S2 is put into an internal mixer for mixing to obtain an inner rubber layer blank, the mixing temperature is 80-110 ℃, the rotating speed of a rotor of the internal mixer is 70-90r/min, the mixing time is 12-18min, and the upper ram pressure of the internal mixer is 0.6-0.8 mpa; and (3) mixing the outer rubber layer colloid and the vulcanization additive mixture by repeating the steps, and obtaining an outer rubber layer blank after mixing, wherein the mixing condition is the same as that of the mixture of the inner rubber layer colloid and the vulcanization additive.
S4, first extrusion molding: and (3) putting the blank of the inner rubber layer prepared in the step (S3) into a charging barrel of a first extruder for heating and extruding to obtain a pipe blank of the inner rubber layer, introducing the extruded pipe blank of the inner rubber layer into a cooling tank, and injecting water into the cooling tank, wherein the temperature in the cooling tank is 10-18 ℃.
S5, weaving and winding: and (3) drying the cooled tube blank of the inner rubber layer in the S4, then feeding the tube blank into a braiding machine, connecting the raw materials of the framework layer with a spindle of the braiding machine, braiding and winding the raw materials of the framework layer on the tube blank of the inner rubber layer by the braiding machine, connecting the inner rubber layer with the framework layer, integrally forming the pipeline blank, ensuring that the pipeline layer bodies are tightly attached to each other, and further providing a guarantee for the protection of the multilayer structure design of the pipeline.
S6, second extrusion molding: and (3) introducing the inner rubber layer pipe blank connected with the framework layer in the step S5 into a second extruder, then adding the outer rubber layer blank prepared in the step S3 into a charging barrel of the second extruder, heating and extruding the outer rubber layer pipe blank, and coating the outer rubber layer pipe blank on the surfaces of the inner rubber layer pipe blank and the framework layer to obtain the pipeline pipe blank.
S7, dipping: and (3) introducing the pipe blank of the pipeline prepared in the step (S6) into a cooling tank, and injecting a vulcanizing solution into the cooling tank, wherein the temperature in the cooling tank is 9-15 ℃, so that two effects of cooling and vulcanizing are achieved, the process flow is simplified, and the production efficiency is improved.
S8, spraying: and (5) drying the cooled pipeline pipe blank in the step (S7), injecting coating raw materials in corresponding parts into a coating tank of a spraying machine, spraying the inner wall and the outer wall of the pipeline pipe blank, placing the pipeline pipe blank at a ventilation position for standing for 30-60min after spraying, and standing to obtain the pipeline finished product.
Preferably, the raw materials of the inner rubber layer in S1 include the following raw materials in parts: 80-100 parts of natural rubber, 80-90 parts of carboxyl nitrile rubber, 10-20 parts of liquid coumarone, 12-16 parts of carbon black, 5-10 parts of trimethylolpropane trimethacrylate, 5-10 parts of silicic acid zinc oxide and 3-5 parts of an anti-aging agent.
Preferably, the raw materials of the outer rubber layer in S1 include the following raw materials in parts: 80-100 parts of natural rubber, 80-90 parts of butyl rubber, 10-20 parts of calcium silicate, 10-20 parts of calcium hydroxide, 8-12 parts of anti-aging agent and 3-5 parts of antioxidant.
Preferably, the vulcanization additive in S1 comprises the following raw materials in parts by weight: 10-20 parts of sulfur powder, 5-5 parts of promoter TMTD3 and 1-3 parts of benzoyl peroxide.
Preferably, the heating temperature of the first extruder in S4 is 100-120 ℃, and the heating temperature of the second extruder in S6 is 110-130 ℃.
Preferably, the diameter of the steel wire in the S5 is 0.5-0.7mm, the number of the braider spindles is 24, the number of the braiding meshes is 7, the braiding pitch is 43.5mm, and the framework layer is compact and firm and has high toughness.
Preferably, the vulcanizing solution in the S7 comprises the following raw materials in parts by weight: 20-30 parts of water, 15-25 parts of carbon disulfide solution and 3-5 parts of sulfur powder.
Preferably, the carbon disulfide solution contains 6 to 10 percent of sulfur chloride.
Preferably, the coating raw material in S8 includes the following raw materials in parts: 20-30 parts of water, 18-24 parts of epoxy resin, 18-24 parts of phenolic resin, 4-6 parts of modifier, 3-5 parts of thixotropic agent, 3-5 parts of emulsifier and 3-5 parts of adhesive.
(III) advantageous effects
Compared with the prior art, the invention provides a modified epoxy phenolic aldehyde high-temperature thermal production ground pipeline, which has the following beneficial effects:
1. the modified epoxy phenolic aldehyde high-temperature thermal production ground pipeline adopts an extruder and a braiding machine to be matched in a production process, so that a pipeline blank is integrally formed, the close fit between pipeline layer bodies is ensured, the protection performance of the multilayer structure design of the pipeline is further guaranteed, a cold vulcanization method is used for dipping the extruded and formed pipe blank during the rubber vulcanization treatment of a tail section of the process, two effects of cooling and vulcanization are simultaneously achieved, the cold vulcanization method is quicker and more uniform compared with the hot vulcanization method adopted by part of processes, the whole time consumption of the process is shortened, the production efficiency of the process is further improved, the process finally sprays the pipe blank to form the pipe blank, epoxy resin and phenolic resin are subjected to modification treatment in coating raw materials, the epoxy modified phenolic aldehyde resin obtained by modification has excellent heat resistance and wear resistance, and better protection performance is provided for the inner layer and the outer layer of the pipeline, compared with the prior domestic partial process, the pipeline production process has the characteristics of simple operation, simplified steps and convenience for mass production, and is suitable for popularization and use.
2. The modified epoxy phenolic aldehyde high-temperature thermal production ground pipeline adopts the carboxyl nitrile rubber as a main raw material in the inner rubber layer, the highest use temperature can reach 130 ℃, the highest use temperature can resist 150 ℃ in hot oil, the temperature requirement in the process of thick oil transportation is met, the wear resistance of the pipeline is 30-45% higher than that of natural rubber, the air tightness is excellent, simultaneously, carbon black and an anti-aging agent are added in the inner rubber layer, the oil resistance and the anti-aging performance are further improved, the inner rubber layer which is directly contacted with the thick oil can better meet the challenges of high temperature and oil stain, the framework layer adopts steel wires as a main body to weave a wire mesh as a middle layer protective support of the pipeline, the situations of deformation and damage caused by treading when the pipeline is placed on the ground are reduced, the use scene of the pipeline is widened, the butyl rubber with excellent wear resistance in the rubber is adopted in the outer rubber layer as a main material, and the calcium, the wear resistance, the high temperature resistance and the low temperature resistance of the outer pipe body are improved, so that the pipeline can deal with the challenges of wind and sand invasion and large day and night temperature difference, the application range of the pipeline is widened, and the pipeline is suitable for being widely popularized and used in various oil fields in China.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
The first embodiment is as follows: a modified epoxy phenolic aldehyde high-temperature thermal production ground pipeline comprises an outer coating, an outer adhesive layer, a framework layer, an inner adhesive layer and an inner coating, wherein the components of the outer coating and the inner coating are the same, and the preparation process comprises the following steps: s1, first mixing: putting the raw materials of the inner rubber layer in corresponding parts into an internal mixer to mix, and mixing to obtain an inner rubber layer colloid, wherein the mixing temperature is 70 ℃, the rotating speed of a rotor of the internal mixer is 50/min, the mixing time is 9min, and the upper ram pressure of the internal mixer is 0.6 mpa; mixing the raw materials of the outer rubber layer by repeating the steps to obtain an outer rubber layer colloid, wherein the mixing conditions are the same as those of the raw materials of the inner rubber layer; s2, vulcanization: mixing the vulcanization additive with the inner rubber layer colloid prepared in the step S1 in a corresponding part to obtain an inner rubber layer colloid and vulcanization additive mixture, and mixing the vulcanization additive with the outer rubber layer colloid in an equal part to obtain an outer rubber layer colloid and vulcanization additive mixture; s3, second mixing: the mixture of the inner rubber layer colloid and the vulcanization additive prepared in the S2 is put into an internal mixer for mixing, and an inner rubber layer blank is obtained after mixing, wherein the mixing temperature is 80 ℃, the rotating speed of a rotor of the internal mixer is 70r/min, the mixing time is 12min, and the upper plug pressure of the internal mixer is 0.6 mpa; mixing the outer rubber layer colloid and the vulcanization additive mixture by repeating the steps to obtain an outer rubber layer blank, wherein the mixing condition is the same as that of the mixture of the inner rubber layer colloid and the vulcanization additive; s4, first extrusion molding: putting the blank of the inner rubber layer prepared in the S3 into a charging barrel of a first extruder to be heated and extruded to obtain a tube blank of the inner rubber layer, introducing the tube blank of the inner rubber layer after being extruded into a cooling tank, and injecting water into the cooling tank, wherein the temperature in the cooling tank is 10 ℃; s5, weaving and winding: drying the cooled tube blank of the inner rubber layer in the step S4, then introducing the tube blank into a braiding machine, connecting the raw materials of the framework layer with a spindle of the braiding machine, braiding and winding the raw materials of the framework layer on the tube blank of the inner rubber layer by the braiding machine, and connecting the inner rubber layer with the framework layer; s6, second extrusion molding: introducing the pipe blank of the inner rubber layer connected with the framework layer in the step S5 into a second extruder, then adding the outer rubber layer blank prepared in the step S3 into a charging barrel of the second extruder, heating and extruding the pipe blank of the outer rubber layer, and coating the pipe blank of the outer rubber layer on the surfaces of the pipe blank of the inner rubber layer and the framework layer to obtain a pipe blank of the pipeline; s7, dipping: introducing the pipe blank of the pipeline prepared in the S6 into a cooling tank, and injecting a vulcanizing solution into the cooling tank, wherein the temperature in the cooling tank is 9 ℃; s8, spraying: and (5) drying the cooled pipeline pipe blank in the step (S7), injecting coating raw materials in corresponding parts into a coating tank of a spraying machine, spraying the inner wall and the outer wall of the pipeline pipe blank, placing the pipeline pipe blank at a ventilation position for standing for 30min after spraying, and standing to obtain the pipeline finished product.
The inner glue layer raw material in the S1 comprises the following raw materials in parts by weight: 80 parts of natural rubber, 80 parts of carboxyl nitrile rubber, 10 parts of liquid coumarone, 12 parts of carbon black, 5 parts of trimethylolpropane trimethacrylate, 5 parts of silicic acid zinc oxide and 3 parts of anti-aging agent, wherein the raw materials of the outer rubber layer in S1 comprise the following raw materials in parts by weight: 80 parts of natural rubber, 80 parts of butyl rubber, 10 parts of calcium silicate, 10 parts of calcium hydroxide, 8 parts of anti-aging agent and 3 parts of antioxidant, wherein the vulcanization additive in S1 comprises the following raw materials in parts by weight: 10 parts of sulfur powder, 1 part of benzoyl peroxide and 1 part of an accelerant TMTD3-5 parts, wherein the heating temperature of a first extruder in S4 is 100 ℃, the heating temperature of a second extruder in S6 is 110 ℃, the diameter of a steel wire in S5 is 0.5mm, the number of ingots of a braiding machine is 24, the number of braiding meshes is 7, the braiding pitch is 43.5mm, and a vulcanizing solution in S7 comprises the following raw materials in parts: 20 parts of water, 15 parts of carbon disulfide solution and 3 parts of sulfur powder, wherein the carbon disulfide solution contains 6% of sulfur chloride, and the coating raw material in S8 comprises the following raw materials in parts by weight: 20 parts of water, 18 parts of epoxy resin, 18 parts of phenolic resin, 4 parts of modifier, 3 parts of thixotropic agent, 3 parts of emulsifier and 3 parts of adhesive.
Example two: a modified epoxy phenolic aldehyde high-temperature thermal production ground pipeline comprises an outer coating, an outer adhesive layer, a framework layer, an inner adhesive layer and an inner coating, wherein the components of the outer coating and the inner coating are the same, and the preparation process comprises the following steps: s1, first mixing: putting the raw materials of the inner rubber layer in corresponding parts into an internal mixer to mix, and obtaining colloid of the inner rubber layer after mixing, wherein the mixing temperature is 80 ℃, the rotating speed of a rotor of the internal mixer is 60r/min, the mixing time is 12min, and the upper ram pressure of the internal mixer is 0.7 mpa; mixing the raw materials of the outer rubber layer by repeating the steps to obtain an outer rubber layer colloid, wherein the mixing conditions are the same as those of the raw materials of the inner rubber layer; s2, vulcanization: mixing the vulcanization additive with the inner rubber layer colloid prepared in the step S1 in a corresponding part to obtain an inner rubber layer colloid and vulcanization additive mixture, and mixing the vulcanization additive with the outer rubber layer colloid in an equal part to obtain an outer rubber layer colloid and vulcanization additive mixture; s3, second mixing: the mixture of the inner rubber layer colloid and the vulcanization additive prepared in the S2 is put into an internal mixer for mixing, and an inner rubber layer blank is obtained after mixing, wherein the mixing temperature is 95 ℃, the rotating speed of a rotor of the internal mixer is 80r/min, the mixing time is 15min, and the upper plug pressure of the internal mixer is 0.7 mpa; mixing the outer rubber layer colloid and the vulcanization additive mixture by repeating the steps to obtain an outer rubber layer blank, wherein the mixing condition is the same as that of the mixture of the inner rubber layer colloid and the vulcanization additive; s4, first extrusion molding: putting the blank of the inner rubber layer prepared in the S3 into a charging barrel of a first extruder to be heated and extruded to obtain a tube blank of the inner rubber layer, introducing the tube blank of the inner rubber layer after being extruded into a cooling tank, and injecting water into the cooling tank, wherein the temperature in the cooling tank is 14 ℃; s5, weaving and winding: drying the cooled tube blank of the inner rubber layer in the step S4, then introducing the tube blank into a braiding machine, connecting the raw materials of the framework layer with a spindle of the braiding machine, braiding and winding the raw materials of the framework layer on the tube blank of the inner rubber layer by the braiding machine, and connecting the inner rubber layer with the framework layer; s6, second extrusion molding: introducing the pipe blank of the inner rubber layer connected with the framework layer in the step S5 into a second extruder, then adding the outer rubber layer blank prepared in the step S3 into a charging barrel of the second extruder, heating and extruding the pipe blank of the outer rubber layer, and coating the pipe blank of the outer rubber layer on the surfaces of the pipe blank of the inner rubber layer and the framework layer to obtain a pipe blank of the pipeline; s7, dipping: introducing the pipe blank of the pipeline prepared in the S6 into a cooling tank, and injecting a vulcanizing solution into the cooling tank, wherein the temperature in the cooling tank is 12 ℃; s8, spraying: and (5) drying the cooled pipeline pipe blank in the step S7, injecting coating raw materials in corresponding parts into a coating tank of a spraying machine, spraying the inner wall and the outer wall of the pipeline pipe blank, placing the pipeline pipe blank at a ventilation position for standing for 45min after spraying, and standing to obtain the pipeline finished product.
The inner glue layer raw material in the S1 comprises the following raw materials in parts by weight: 90 parts of natural rubber, 85 parts of carboxylated nitrile rubber, 15 parts of liquid coumarone, 14 parts of carbon black, 7.5 parts of trimethylolpropane trimethacrylate, 7.5 parts of silicic acid zinc oxide and 4 parts of anti-aging agent, wherein the raw materials of the outer rubber layer in S1 comprise the following raw materials in parts by weight: 90 parts of natural rubber, 85 parts of butyl rubber, 15 parts of calcium silicate, 15 parts of calcium hydroxide, 10 parts of anti-aging agent and 4 parts of antioxidant, wherein the vulcanization additive in S1 comprises the following raw materials in parts by weight: 15 parts of sulfur powder, an accelerant TMTD4 parts and 2 parts of benzoyl peroxide, wherein the heating temperature of a first extruder in S4 is 110 ℃, the heating temperature of a second extruder in S6 is 120 ℃, the diameter of a steel wire in S5 is 0.6mm, the number of ingots of a braiding machine is 24, the number of braiding meshes is 7, the braiding pitch is 43.5mm, and a vulcanizing solution in S7 comprises the following raw materials in parts by weight: 25 parts of water, 20 parts of carbon disulfide solution and 45 parts of sulfur powder, wherein the carbon disulfide solution contains 8% of sulfur chloride, and the coating raw material in S8 comprises the following raw materials in parts by weight: 25 parts of water, 21 parts of epoxy resin, 21 parts of phenolic resin, 5 parts of modifier, 4 parts of thixotropic agent, 4 parts of emulsifier and 4 parts of adhesive.
Example three: a modified epoxy phenolic aldehyde high-temperature thermal production ground pipeline comprises an outer coating, an outer adhesive layer, a framework layer, an inner adhesive layer and an inner coating, wherein the components of the outer coating and the inner coating are the same, and the preparation process comprises the following steps: s1, first mixing: putting the raw materials of the inner rubber layer in corresponding parts into an internal mixer to mix, and mixing to obtain colloid of the inner rubber layer, wherein the mixing temperature is 90 ℃, the rotating speed of a rotor of the internal mixer is 70r/min, the mixing time is 15min, and the upper ram pressure of the internal mixer is 0.8 mpa; mixing the raw materials of the outer rubber layer by repeating the steps to obtain an outer rubber layer colloid, wherein the mixing conditions are the same as those of the raw materials of the inner rubber layer; s2, vulcanization: mixing the vulcanization additive with the inner rubber layer colloid prepared in the step S1 in a corresponding part to obtain an inner rubber layer colloid and vulcanization additive mixture, and mixing the vulcanization additive with the outer rubber layer colloid in an equal part to obtain an outer rubber layer colloid and vulcanization additive mixture; s3, second mixing: the mixture of the inner rubber layer colloid and the vulcanization additive prepared in the S2 is put into an internal mixer for mixing, and an inner rubber layer blank is obtained after mixing, wherein the mixing temperature is 110 ℃, the rotating speed of a rotor of the internal mixer is 90r/min, the mixing time is 18min, and the upper plug pressure of the internal mixer is 0.8 mpa; mixing the outer rubber layer colloid and the vulcanization additive mixture by repeating the steps to obtain an outer rubber layer blank, wherein the mixing condition is the same as that of the mixture of the inner rubber layer colloid and the vulcanization additive; s4, first extrusion molding: putting the blank of the inner rubber layer prepared in the S3 into a charging barrel of a first extruder to be heated and extruded to obtain a tube blank of the inner rubber layer, introducing the tube blank of the inner rubber layer after being extruded into a cooling tank, and injecting water into the cooling tank, wherein the temperature in the cooling tank is 18 ℃; s5, weaving and winding: drying the cooled tube blank of the inner rubber layer in the step S4, then introducing the tube blank into a braiding machine, connecting the raw materials of the framework layer with a spindle of the braiding machine, braiding and winding the raw materials of the framework layer on the tube blank of the inner rubber layer by the braiding machine, and connecting the inner rubber layer with the framework layer; s6, second extrusion molding: introducing the pipe blank of the inner rubber layer connected with the framework layer in the step S5 into a second extruder, then adding the outer rubber layer blank prepared in the step S3 into a charging barrel of the second extruder, heating and extruding the pipe blank of the outer rubber layer, and coating the pipe blank of the outer rubber layer on the surfaces of the pipe blank of the inner rubber layer and the framework layer to obtain a pipe blank of the pipeline; s7, dipping: introducing the pipe blank of the pipeline prepared in the S6 into a cooling tank, and injecting a vulcanizing solution into the cooling tank, wherein the temperature in the cooling tank is 15 ℃; s8, spraying: and (5) drying the cooled pipeline pipe blank in the step (S7), injecting coating raw materials in corresponding parts into a coating tank of a spraying machine, spraying the inner wall and the outer wall of the pipeline pipe blank, placing the pipeline pipe blank at a ventilation position for standing for 60min after spraying, and standing to obtain the pipeline finished product.
The inner glue layer raw material in the S1 comprises the following raw materials in parts by weight: 100 parts of natural rubber, 90 parts of carboxylated nitrile rubber, 20 parts of liquid coumarone, 16 parts of carbon black, 10 parts of trimethylolpropane trimethacrylate, 10 parts of silicic acid zinc oxide and 5 parts of anti-aging agent, wherein the raw materials of the outer rubber layer in S1 comprise the following raw materials in parts by weight: 100 parts of natural rubber, 90 parts of butyl rubber, 20 parts of calcium silicate, 20 parts of calcium hydroxide, 12 parts of anti-aging agent and 5 parts of antioxidant, wherein the vulcanization additive in S1 comprises the following raw materials in parts by weight: 20 parts of sulfur powder, 3 parts of accelerant TMTD5 and benzoyl peroxide, wherein the heating temperature of a first extruder in S4 is 120 ℃, the heating temperature of a second extruder in S6 is 130 ℃, the diameter of a steel wire in S5 is 0.7mm, the number of ingots of a braiding machine is 24, the number of braiding meshes is 7, the braiding pitch is 43.5mm, and a vulcanizing solution in S7 comprises the following raw materials in parts by weight: 30 parts of water, 25 parts of carbon disulfide solution and 5 parts of sulfur powder, wherein the carbon disulfide solution contains 10% of sulfur chloride, and the coating raw material in S8 comprises the following raw materials in parts by weight: 30 parts of water, 24 parts of epoxy resin, 24 parts of phenolic resin, 6 parts of modifier, 5 parts of thixotropic agent, 5 parts of emulsifier and 5 parts of adhesive.
The main differences are:
it can be seen from this that: the process sprays the tube blank to form, the epoxy resin and the phenolic resin are modified in the coating raw material, the modified epoxy phenolic resin obtained by modification has excellent heat resistance and wear resistance, better protection is provided for the inner layer and the outer layer of a pipeline, compared with the current domestic process, the pipeline production process has the characteristics of simple operation, simplified steps and convenience for mass production, and is suitable for popularization and use, the carboxyl butadiene-acrylonitrile rubber is adopted as the main raw material in the inner rubber layer, the highest use temperature can reach 130 ℃, the high temperature of 150 ℃ can be resisted in hot oil, the temperature requirement in the thick oil conveying process is met, the wear resistance is 30-45% higher than that of natural rubber, the air tightness is excellent, simultaneously, carbon black and an anti-aging agent are added in the inner rubber layer, the oil resistance and the anti-aging performance are further improved, and the inner rubber layer which is directly contacted with thick oil can better respond to the challenges of high temperature and oil pollution, the framework layer adopts steel wires as a main body to weave a wire mesh as a pipeline middle layer protection support, the situations of deformation and damage caused by treading when a pipeline is placed on the ground are reduced, the pipeline use scene is widened, the outer rubber layer adopts butyl rubber with excellent wear resistance in rubber as a main material, and in addition, calcium hydroxide and an antioxidant are matched for use, the wear resistance, high temperature resistance and low temperature resistance of the outer pipe body are improved, so that the pipeline can deal with the challenges of wind and sand invasion and large day and night temperature difference, the use range of the pipeline is widened, the pipeline is suitable for being popularized and used in various oil fields in China, a cold vulcanization method is used for dipping an extruded pipe blank during rubber vulcanization treatment of a process tail section, two effects of cooling and vulcanization are achieved simultaneously, the whole time consumption of the process is shortened, and the production efficiency of the process is improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The modified epoxy phenolic aldehyde high-temperature thermal production ground pipeline is characterized by comprising an outer coating, an outer adhesive layer, a framework layer, an inner adhesive layer and an inner coating, wherein the components of the outer coating and the inner coating are the same, and the preparation process comprises the following steps:
s1, first mixing: putting the raw materials of the inner rubber layer in corresponding parts into an internal mixer to mix, and mixing to obtain an inner rubber layer colloid, wherein the mixing temperature is 70-90 ℃, the rotating speed of a rotor of the internal mixer is 50-70r/min, the mixing time is 9-15min, and the upper plug pressure of the internal mixer is 0.6-0.8 mpa; and (4) repeating the steps to mix the raw materials of the outer rubber layer, and mixing to obtain an outer rubber layer colloid under the same mixing conditions as the raw materials of the inner rubber layer.
S2, vulcanization: and mixing the vulcanization additive in the corresponding parts with the inner rubber layer colloid prepared in the step S1 to obtain a mixture of the inner rubber layer colloid and the vulcanization additive, and mixing the vulcanization additive in the same parts with the outer rubber layer colloid to obtain a mixture of the outer rubber layer colloid and the vulcanization additive.
S3, second mixing: the mixture of the inner rubber layer colloid and the vulcanization additive prepared in the S2 is put into an internal mixer for mixing to obtain an inner rubber layer blank, the mixing temperature is 80-110 ℃, the rotating speed of a rotor of the internal mixer is 70-90r/min, the mixing time is 12-18min, and the upper ram pressure of the internal mixer is 0.6-0.8 mpa; and (3) mixing the outer rubber layer colloid and the vulcanization additive mixture by repeating the steps, and obtaining an outer rubber layer blank after mixing, wherein the mixing condition is the same as that of the mixture of the inner rubber layer colloid and the vulcanization additive.
S4, first extrusion molding: and (3) putting the blank of the inner rubber layer prepared in the step (S3) into a charging barrel of a first extruder for heating and extruding to obtain a pipe blank of the inner rubber layer, introducing the extruded pipe blank of the inner rubber layer into a cooling tank, and injecting water into the cooling tank, wherein the temperature in the cooling tank is 10-18 ℃.
S5, weaving and winding: and (4) drying the cooled tube blank of the inner rubber layer in the step (S4), then introducing into a braiding machine, connecting the framework layer raw material with a spindle of the braiding machine, braiding and winding the framework layer raw material on the tube blank of the inner rubber layer by the braiding machine, and connecting the inner rubber layer with the framework layer.
S6, second extrusion molding: and (3) introducing the inner rubber layer pipe blank connected with the framework layer in the step S5 into a second extruder, then adding the outer rubber layer blank prepared in the step S3 into a charging barrel of the second extruder, heating and extruding the outer rubber layer pipe blank, and coating the outer rubber layer pipe blank on the surfaces of the inner rubber layer pipe blank and the framework layer to obtain the pipeline pipe blank.
S7, dipping: and (3) introducing the pipe blank of the pipeline prepared in the step S6 into a cooling tank, and injecting a vulcanizing solution into the cooling tank, wherein the temperature in the cooling tank is 9-15 ℃.
S8, spraying: and (5) drying the cooled pipeline pipe blank in the step (S7), injecting coating raw materials in corresponding parts into a coating tank of a spraying machine, spraying the inner wall and the outer wall of the pipeline pipe blank, placing the pipeline pipe blank at a ventilation position for standing for 30-60min after spraying, and standing to obtain the pipeline finished product.
2. The modified epoxy phenolic aldehyde high-temperature thermal production ground pipeline according to claim 1, wherein the raw materials of the inner glue layer in the S1 comprise the following raw materials in parts by weight: 80-100 parts of natural rubber, 80-90 parts of carboxyl nitrile rubber, 10-20 parts of liquid coumarone, 12-16 parts of carbon black, 5-10 parts of trimethylolpropane trimethacrylate, 5-10 parts of silicic acid zinc oxide and 3-5 parts of an anti-aging agent.
3. The modified epoxy phenolic aldehyde high-temperature thermal production ground pipeline as claimed in claim 1, wherein the raw materials of the outer glue layer in the S1 comprise the following raw materials in parts by weight: 80-100 parts of natural rubber, 80-90 parts of butyl rubber, 10-20 parts of calcium silicate, 10-20 parts of calcium hydroxide, 8-12 parts of anti-aging agent and 3-5 parts of antioxidant.
4. The modified epoxy phenolic aldehyde high-temperature thermal production ground pipeline as claimed in claim 1, wherein the vulcanizing additive in the S1 comprises the following raw materials in parts by weight: 10-20 parts of sulfur powder, 5-5 parts of promoter TMTD3 and 1-3 parts of benzoyl peroxide.
5. The modified epoxy phenolic aldehyde high-temperature thermal recovery ground pipeline as claimed in claim 1, wherein the heating temperature of the first extruder in the S4 is 100-120 ℃, and the heating temperature of the second extruder in the S6 is 110-130 ℃.
6. The modified epoxy phenolic aldehyde high-temperature thermal production ground pipeline as claimed in claim 1, wherein the skeleton layer raw material in S5 is steel wire, the diameter of the steel wire is 0.5-0.7mm, the number of braiding machine spindles is 24 spindles, the number of braiding meshes is 7 meshes, and the braiding pitch is 43.5 mm.
7. The modified epoxy phenolic aldehyde high-temperature thermal production ground pipeline as claimed in claim 1, wherein the vulcanizing solution in the S7 comprises the following raw materials in parts by weight: 20-30 parts of water, 15-25 parts of carbon disulfide solution and 3-5 parts of sulfur powder.
8. The modified epoxy novolac high-temperature thermal recovery surface pipeline of claim 6, wherein the carbon disulfide solution contains 6-10% of sulfur chloride.
9. The modified epoxy phenolic aldehyde high-temperature thermal production ground pipeline as claimed in claim 1, wherein the coating raw material in the S8 comprises the following raw materials in parts by weight: 20-30 parts of water, 18-24 parts of epoxy resin, 18-24 parts of phenolic resin, 4-6 parts of modifier, 3-5 parts of thixotropic agent, 3-5 parts of emulsifier and 3-5 parts of adhesive.
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