CN110920095A - Preparation method of petroleum pipe made of carbon fiber composite material - Google Patents
Preparation method of petroleum pipe made of carbon fiber composite material Download PDFInfo
- Publication number
- CN110920095A CN110920095A CN201911001570.1A CN201911001570A CN110920095A CN 110920095 A CN110920095 A CN 110920095A CN 201911001570 A CN201911001570 A CN 201911001570A CN 110920095 A CN110920095 A CN 110920095A
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- China
- Prior art keywords
- core mold
- fibers
- preparing
- carbon fiber
- petroleum pipe
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
Abstract
The invention discloses a preparation method of a carbon fiber composite petroleum pipe, which comprises the following steps: a. preparing equipment; b. preparing a core mold; c. preparing glue solution and fibers; d. winding and forming; e. pre-curing; f. demolding; g. curing; h. and finishing the inner surface and the outer surface. According to the preparation method of the carbon fiber composite petroleum pipe, the petroleum pipe is formed by winding the carbon fibers, and has the characteristics of small creep deformation, stable performance, no deformation at the temperature of-50-150 ℃, no deformation after long-time use, long service life, light weight, high strength and low installation and transportation cost.
Description
Technical Field
The invention relates to the field of petroleum pipes, in particular to a preparation method of a petroleum pipe made of carbon fiber composite material.
Background
The traditional oil pipe special for petroleum has the defects of large volume and mass, difficult transportation, no acid-base corrosion resistance, low wear resistance, short service life and high operation cost. Moreover, the petroleum pipeline is a special oil pipe for conveying petroleum, the demand is large, along with the rapid development of automobile manufacturing and other petroleum-related industries, petroleum conveying is a main way for conveying petroleum remotely nowadays, and the demand for the petroleum pipeline is large, so that in the process of petroleum conveying, the cost for replacing the oil pipe due to petroleum conveying is increased year by year, and the reasons also include that along with the deepening of the exploitation degree of the petroleum, impurities contained in the petroleum are gradually increased, so that the corrosion degree of the petroleum pipeline is gradually deepened, and the damage of the petroleum pipeline is accelerated. The innovation and the breakthrough of the domestic composite material pipe technology are realized, the localization is promoted to the maximum extent, and the significance for promoting the exploration and the development of the oil and gas field resources in China is great.
But the existing preparation method of the carbon fiber petroleum pipe comprises the steps of (1) cutting carbon fiber prepreg cloth into small pieces; (2) firstly, coating a layer of resin adhesive on the surface of a mould, sticking a prepreg cloth on the mould, and heating and ironing the prepreg cloth; (3) placing the mould with the prepreg fabric on a rolling table to be rolled; (4) winding a plastic tape on a coiled product, putting the coiled product into a barbecue oven, baking and shaping; (5) taking out the mold on the core stripper, and removing the plastic belt; (6) and grinding the surface of the product and then painting the product. The preparation method has the advantages that the plastic tape wound by the carbon fiber petroleum pipe is put into a furnace, the heating temperature is low, the curing fastness is low, the product is ground and painted, the pipeline is used for a long time, the corrosion resistance of the pipeline is poor, and the service life is short.
Disclosure of Invention
The invention mainly solves the technical problem of providing a preparation method of a carbon fiber composite petroleum pipe, which is formed by winding carbon fibers, and has the characteristics of small creep deformation, stable performance, no deformation at the temperature of-50-150 ℃, no deformation after long-time use, long service life, light weight, high strength and low installation and transportation cost.
In order to solve the technical problems, the invention adopts a technical scheme that: the preparation method of the carbon fiber composite petroleum pipe comprises the following steps:
a. preparing equipment, namely preparing a winding machine, a curing furnace and a fiber conveying frame, wherein the winding machine comprises a gum dipping machine and a core mold driving machine;
b. preparing a core mold, wherein the core mold is in a circular tube shape formed by splicing six circular arcs, the length of the core mold is determined according to the requirements of a petroleum pipe, a supporting block is arranged in the core mold, the core mold can be contracted and opened by utilizing the umbrella stand principle to realize the demolding of the core mold, a layer of demolding agent is coated on the surface of the core mold, and the core mold is installed on a core mold driving machine of a winding machine;
c. preparing glue solution and fibers, wherein the glue solution is prepared from the following components in percentage by mass: 91% of epoxy resin, 7% of superfine dicyandiamide curing agent, 1.3% of accelerator and 0.7% of thickening agent, the components of the weighed glue solution are placed in a container and uniformly stirred, finally the uniformly stirred glue solution is poured into a glue dipping machine of the winding machine, the fibers are arranged into the glue dipping machine storing the resin through a yarn guide plate, a rotating roller is arranged on the glue dipping machine, the roller presses the fibers into the glue solution, so that the surfaces of the fibers are dipped with a layer of glue solution, and the fibers are wound on a core mold through a fiber conveying frame;
d. winding and forming, starting a core mold driving machine of a winding machine and a driver of a fiber conveying frame to wind the impregnated continuous fibers around the surface of the core mold, and finishing winding when the winding thickness of the surface of the fibers reaches the design requirement;
e. precuring, namely putting the wound product into a curing furnace for precuring;
f. demoulding, namely twisting the support of the core mould of the pre-cured product, and contracting to take out the core mould;
g. curing, namely transferring the product without the core mold to a high-temperature curing furnace;
h. and (3) finishing the inner surface and the outer surface, namely polishing and finishing the inner surface and the outer surface of the solidified petroleum pipe through machining.
In a preferred embodiment of the present invention, the core mold material is made of an aluminum-resistant alloy material.
In a preferred embodiment of the present invention, in the step e, the pre-curing temperature is 100 to 150 ℃, and the pre-curing time is 3 to 5 hours.
In a preferred embodiment of the present invention, in the step g, the curing temperature is 300 to 450 ℃ and the curing time is 3 to 5 hours.
In a preferred embodiment of the invention, the fibers are T700K12 carbon fiber filaments.
The invention has the beneficial effects that: the preparation method of the carbon fiber composite petroleum pipe has the following advantages:
1. the petroleum pipe formed by winding carbon fibers has the characteristics of small creep deformation, stable performance, no deformation at the temperature of-50-150 ℃, no deformation after long-time use, long service life, light weight, high strength and low installation and transportation cost;
2. through secondary curing, the petroleum pipe has high-strength fatigue resistance, crack propagation can be relieved and redistribution can be realized due to the composition of the carbon fiber and the matrix, and the damage rate and the maintenance cost can be effectively reduced under severe environment;
3. the inner surface finish is improved through the inner and outer surface finishing, which is beneficial to the smooth flow of the petroleum in the pipeline.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
A preparation method of a carbon fiber composite petroleum pipe comprises the following steps:
a. preparing equipment, namely preparing a winding machine, a curing furnace and a fiber conveying frame, wherein the winding machine comprises a gum dipping machine and a core mold driving machine;
b. preparing a core die, wherein the core die is in a round tube shape formed by splicing six circular arcs, the length of the core die is determined according to the requirements of a petroleum pipe, a supporting block is arranged in the core die, the core die can be contracted and opened by utilizing the umbrella stand principle to realize the demoulding of the core die, a layer of demoulding agent is coated on the surface of the core die, the core die is arranged on a core die driving machine of a winding machine, and the core die is processed by adopting an aluminum-resistant alloy material;
c. preparing glue solution and fibers, wherein the glue solution is prepared from the following components in percentage by mass: 91% of epoxy resin, 7% of superfine dicyandiamide curing agent, 1.3% of accelerator and 0.7% of thickening agent, the components of the weighed glue solution are placed in a container and uniformly stirred, finally the uniformly stirred glue solution is poured into a glue dipping machine of a winding machine, the fibers are T700K12 carbon fiber filaments, the fibers are arranged and enter the glue dipping machine storing the resin through a yarn guide plate, a rotating roller is arranged on the glue dipping machine, the roller presses the fibers into the glue solution to enable the surfaces of the fibers to be dipped with a layer of glue solution, and the fibers are wound on a core mold through a fiber conveying frame;
d. winding and forming, starting a core mold driving machine of a winding machine and a driver of a fiber conveying frame to wind the impregnated continuous fibers around the surface of the core mold, and finishing winding when the winding thickness of the surface of the fibers reaches the design requirement;
e. precuring, namely putting the wound product into a curing furnace for precuring, wherein the precuring temperature is 100-150 ℃, and the precuring time is 3-5 hours;
f. demoulding, namely twisting the support of the core mould of the pre-cured product, and contracting to take out the core mould;
g. curing, namely transferring the product without the core mold to a high-temperature curing furnace, wherein the curing temperature is 300-450 ℃, and the curing time is 3-5 hours;
h. and (3) finishing the inner surface and the outer surface, namely polishing and finishing the inner surface and the outer surface of the solidified petroleum pipe through machining.
In conclusion, the preparation method of the carbon fiber composite petroleum pipe has the following advantages:
1. the petroleum pipe formed by winding carbon fibers has the characteristics of small creep deformation, stable performance, no deformation at the temperature of-50-150 ℃, no deformation after long-time use, long service life, light weight, high strength and low installation and transportation cost;
2. the petroleum pipe has high-strength fatigue resistance through secondary curing, and because the carbon fiber is compounded with the matrix,
crack propagation can be relieved, internal stress can be redistributed, and the damage rate and the maintenance cost can be effectively reduced in a severe environment;
3. the inner surface finish is improved through the inner and outer surface finishing, which is beneficial to the smooth flow of the petroleum in the pipeline.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (5)
1. The preparation method of the carbon fiber composite petroleum pipe is characterized by comprising the following steps:
a. preparing equipment, namely preparing a winding machine, a curing furnace and a fiber conveying frame, wherein the winding machine comprises a gum dipping machine and a core mold driving machine;
b. preparing a core mold, wherein the core mold is in a circular tube shape formed by splicing six circular arcs, the length of the core mold is determined according to the requirements of a petroleum pipe, a supporting block is arranged in the core mold, the core mold can be contracted and opened by utilizing the umbrella stand principle to realize the demolding of the core mold, a layer of demolding agent is coated on the surface of the core mold, and the core mold is installed on a core mold driving machine of a winding machine;
c. preparing glue solution and fibers, wherein the glue solution is prepared from the following components in percentage by mass: 91% of epoxy resin, 7% of superfine dicyandiamide curing agent, 1.3% of accelerator and 0.7% of thickening agent, the components of the weighed glue solution are placed in a container and uniformly stirred, finally the uniformly stirred glue solution is poured into a glue dipping machine of the winding machine, the fibers are arranged into the glue dipping machine storing the resin through a yarn guide plate, a rotating roller is arranged on the glue dipping machine, the roller presses the fibers into the glue solution, so that the surfaces of the fibers are dipped with a layer of glue solution, and the fibers are wound on a core mold through a fiber conveying frame;
d. winding and forming, starting a core mold driving machine of a winding machine and a driver of a fiber conveying frame to wind the impregnated continuous fibers around the surface of the core mold, and finishing winding when the winding thickness of the surface of the fibers reaches the design requirement;
e. precuring, namely putting the wound product into a curing furnace for precuring;
f. demoulding, namely twisting the support of the core mould of the pre-cured product, and contracting to take out the core mould;
g. curing, namely transferring the product without the core mold to a high-temperature curing furnace;
h. and (3) finishing the inner surface and the outer surface, namely polishing and finishing the inner surface and the outer surface of the solidified petroleum pipe through machining.
2. The method for preparing the petroleum pipe made of the carbon fiber composite material according to claim 1, wherein the core mold material is processed by adopting an aluminum-resistant alloy material.
3. The method for preparing the petroleum pipe made of the carbon fiber composite material according to claim 1, wherein in the step e, the pre-curing temperature is 100-150 ℃, and the pre-curing time is 3-5 hours.
4. The method for preparing the petroleum pipe made of the carbon fiber composite material according to claim 1, wherein in the step g, the curing temperature is 300-450 ℃ and the curing time is 3-5 hours.
5. The method for preparing the petroleum pipe made of the carbon fiber composite material as claimed in claim 1, wherein the fibers are T700K12 carbon fiber filaments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911001570.1A CN110920095A (en) | 2019-10-21 | 2019-10-21 | Preparation method of petroleum pipe made of carbon fiber composite material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911001570.1A CN110920095A (en) | 2019-10-21 | 2019-10-21 | Preparation method of petroleum pipe made of carbon fiber composite material |
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| CN110920095A true CN110920095A (en) | 2020-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911001570.1A Pending CN110920095A (en) | 2019-10-21 | 2019-10-21 | Preparation method of petroleum pipe made of carbon fiber composite material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022151929A1 (en) * | 2021-01-15 | 2022-07-21 | 江南大学 | Production method for large-diameter engineering pipeline |
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- 2019-10-21 CN CN201911001570.1A patent/CN110920095A/en active Pending
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022151929A1 (en) * | 2021-01-15 | 2022-07-21 | 江南大学 | Production method for large-diameter engineering pipeline |
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Application publication date: 20200327 |