CN106838601B - Intelligent two-dimensional carbon fiber composite pressure-resistant gas cylinder and preparation method thereof - Google Patents

Intelligent two-dimensional carbon fiber composite pressure-resistant gas cylinder and preparation method thereof Download PDF

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CN106838601B
CN106838601B CN201611139365.8A CN201611139365A CN106838601B CN 106838601 B CN106838601 B CN 106838601B CN 201611139365 A CN201611139365 A CN 201611139365A CN 106838601 B CN106838601 B CN 106838601B
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section
fiber
dimensional
fibers
spiral winding
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CN106838601A (en
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朱波
于宽
曹伟伟
王永伟
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Shandong University
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Shandong University
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • 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
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/02—Fibres or whiskers
    • C08K7/04—Fibres or whiskers inorganic
    • 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
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/02—Fibres or whiskers
    • C08K7/04—Fibres or whiskers inorganic
    • C08K7/06—Elements
    • 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
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/02—Fibres or whiskers
    • C08K7/04—Fibres or whiskers inorganic
    • C08K7/08—Oxygen-containing compounds
    • 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
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/02—Fibres or whiskers
    • C08K7/04—Fibres or whiskers inorganic
    • C08K7/10—Silicon-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
    • C08L2205/16—Fibres; Fibrils
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/03—Orientation
    • F17C2201/035—Orientation with substantially horizontal main axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0658—Synthetics
    • F17C2203/0663—Synthetics in form of fibers or filaments
    • F17C2203/067—Synthetics in form of fibers or filaments helically wound
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0658—Synthetics
    • F17C2203/0675—Synthetics with details of composition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/21—Shaping processes
    • F17C2209/2154—Winding
    • F17C2209/2163—Winding with a mandrel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/22—Assembling processes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107—Single phase
    • F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0605—Parameters
    • F17C2250/0626—Pressure
    • 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
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/32—Hydrogen storage

Abstract

The invention discloses an intelligent two-dimensional carbon fiber composite pressure-resistant gas cylinder and a preparation method thereof, and relates to the field of novel composite pressure-resistant containers. The intelligent two-dimensional carbon fiber composite material comprises a barrel body section, an end socket section and a connecting section for connecting the barrel body section and the end socket section, wherein: the barrel section is a two-dimensional spiral winding layer, and first sensors which are uniformly distributed are arranged in the middle or the outer surface of the barrel section; the end socket section is also a two-dimensional spiral winding layer, and second sensors which are uniformly distributed are arranged in the middle or the outer surface of the end socket section; the connecting section connects the barrel section and the end socket section through a two-dimensional weaving laminated structure which is longitudinally stitched, and a third sensor is arranged in the middle or at the outer surface of the connecting section. The invention can effectively monitor the pressure-resistant structural state of the composite material, and realize the life prediction and working condition tracking of the pressure-resistant gas cylinder of the composite material.

Description

Intelligent two-dimensional carbon fiber composite pressure-resistant gas cylinder and preparation method thereof
Technical Field
The invention relates to the field of novel composite pressure-resistant containers, in particular to an intelligent two-dimensional carbon fiber composite pressure-resistant gas cylinder and a preparation method thereof.
Background
The carbon fiber composite pressure-resistant gas cylinder has the comprehensive advantages of light weight, corrosion resistance, good rigidity, high pressure-resistant stability, strong designability and the like, and has wide application in the fields of medium storage, transportation and the like. The existing pressure-resistant gas cylinder container made of composite materials is mainly manufactured by impregnating high-performance carbon fibers with resin, preparing a fiber preform structure through two-dimensional winding, mainly arranging the two-dimensional fibers in the thickness direction, and then preparing the composite materials through thermosetting molding.
The traditional composite gas cylinder has strict requirement on the pressure condition, and different composition structures of the composite gas cylinder are required to bear the pressure required by the working condition, and meanwhile, a certain service life is ensured. The prediction of the structure to the pressure-resistant working condition is relatively unrealistic in the process of winding the composite material fiber, which is also an important factor of unstable quality in the application process of the prior composite material pressure-resistant gas cylinder.
Disclosure of Invention
The invention provides an intelligent two-dimensional carbon fiber composite pressure-resistant gas cylinder and a preparation method thereof, wherein the pressure-resistant gas cylinder can effectively monitor the pressure-resistant structural state of a composite material, and can realize life prediction and working condition tracking of the composite material pressure-resistant gas cylinder.
In order to solve the technical problems, the invention provides the following technical scheme:
the utility model provides an intelligent two-dimensional carbon fiber composite pressure resistant gas cylinder, includes section of thick bamboo body section, head section and the linkage segment of connecting section of thick bamboo body section and head section, wherein:
the cylinder body section is a two-dimensional spiral winding layer, the cylinder body section is provided with uniformly distributed first sensors, and the first sensors are buried in the middle or outer surface position of the cylinder body section;
the end socket section is also a two-dimensional spiral winding layer, the end socket section is provided with uniformly distributed second sensors, and the second sensors are buried in the middle or outer surface position of the end socket section;
the connecting section is used for connecting the barrel section and the end socket section through a two-dimensional weaving laminated structure which is longitudinally stitched, and is provided with a third sensor which is buried in the middle or outer surface position of the connecting section.
Further, the first sensor and the second sensor are one or a combination of several of optical fibers, gratings, magnetic grids and strain gauges, the third sensor is one or a combination of two of optical fibers or strain gauges, and the number of the first sensor, the second sensor and the third sensor is one or a plurality of.
Further, the two-dimensional spiral winding layer consists of main fibers and auxiliary fibers; the external diameter of the cylinder section is 5-30 cm, the thickness of the cylinder section is 5-40 mm, and the length of the cylinder section is 0.5-3 m; the height of the end socket section is 10-40 cm, and the thickness of the end socket section is 5-40 mm; the length of the connecting section is 20-40 cm.
The preparation method of the intelligent two-dimensional carbon fiber composite pressure-resistant gas cylinder comprises the following steps:
(1) Preparation of a barrel section: synchronously impregnating main fibers and auxiliary fibers into composite resin, and preparing a two-dimensional spiral winding layer on a core mold matrix by adopting a spiral winding process according to a certain proportion and a certain winding angle; the method comprises the steps of preparing a two-dimensional carbon fiber winding layer, and embedding a first sensor in the middle or outer surface of the thickness of the two-dimensional spiral winding layer to obtain a cylinder section of the pressure-resistant gas cylinder;
(2) Preparing a seal head section: synchronously impregnating main fibers and auxiliary fibers into composite resin, and preparing a two-dimensional spiral winding layer on a core mold matrix by adopting a spiral winding process according to a certain proportion and a certain winding angle; while preparing the two-dimensional spiral winding layer, embedding a second sensor in the middle or outer surface position of the two-dimensional spiral winding layer to obtain a seal head section of the pressure-resistant gas cylinder;
(3) Preparation of the connecting section: connecting the laminated structure of the spiral winding layer edge of the barrel section and the spiral winding layer edge of the end socket section by adopting a two-dimensional braiding process, and forming a whole through longitudinal suturing between the laminated layers; while longitudinal stitching, introducing the third sensor and the fiber into a stitching structure in a mixed manner to obtain a preform gum dipping composite structure;
(4) Curing and forming the prepreg fiber preform structure: and (3) placing the prepared preform gum dipping composite structure in a curing furnace for heating and curing, and demolding and secondarily treating and molding the cured product.
Further, in the step (1), the usage amount of the main body fiber of the two-dimensional spiral winding layer of the barrel body section is more than 80%, the main body fiber is carbon fiber, and the auxiliary fiber is one or a combination of more than one of silicon carbide fiber, aluminum oxide fiber, boron nitride fiber and basalt fiber.
Further, in the step (2), the usage amount of the main body fiber of the two-dimensional spiral winding layer of the head section is more than 80%, the main body fiber is carbon fiber, and the auxiliary fiber is one or a combination of more than one of aramid fiber, UHMWPE fiber and basalt fiber.
Further, in the step (1) and the step (2), the glue content of the composite resin is between 20 and 50%, and the composite resin is one or a combination of several thermoplastic or thermosetting resins such as epoxy resin, phenolic resin, unsaturated polyester resin, polyurethane resin, polyethylene resin and the like, and is not limited to the above types.
Further, in the step (1) and the step (2), the spiral winding process is performed along the axis of the barrel section or the end socket section as a contour, the thickness of the spiral winding layer of the barrel section and the end socket section is 5-10 cm, and the winding angle of the two-dimensional spiral winding layer is 5-90 degrees.
Further, in the step (3), the longitudinal stitched yarn includes carbon fibers and other fibers, and the other fibers are one or more combinations of aramid fibers, UHMWPE fibers, basalt fibers and glass fibers, wherein the ratio of the carbon fibers to the other fibers is 5:1-10:1.
Further, in the step (4), the curing temperature is 120-140 ℃, the curing time is 1-3 h, and the curing time can be flexibly adjusted according to the type and the curing property of the resin.
The invention has the following beneficial effects:
in the invention, the pressure-resistant gas cylinder adopts a two-dimensional winding structure formed by mixing carbon fibers and other composite materials, and has the comprehensive advantages of light weight, corrosion resistance, good rigidity, high pressure-resistant stability, strong designability and the like; one or more groups of strain sensors are embedded in different thickness positions of a winding structure of the pressure-resistant gas cylinder, and under a complex pressure condition, the strain sensors of the pressure-resistant gas cylinder sense tiny changes of different positions of the pressure-resistant gas cylinder, so that the pressure-bearing state of the high-pressure gas cylinder is predicted, the use state and the service life are further predicted, the pressure-bearing limit state is pre-warned in advance, and the service life and the service stability of the pressure-resistant gas cylinder made of the carbon fiber composite material are effectively improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an intelligent two-dimensional carbon fiber composite pressure-resistant gas cylinder;
wherein, 1: a barrel section; 2: a head section; 3: a connection section; 4: a first sensor; 5: a second sensor; 6: and a third sensor.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
In one aspect, the invention provides an intelligent two-dimensional carbon fiber composite pressure-resistant gas cylinder, as shown in fig. 1, comprising a cylinder body section 1, a seal head section 2 and a connecting section 3 for connecting the cylinder body section 1 and the seal head section 2, wherein:
the barrel section 1 is a two-dimensional spiral winding layer, the barrel section 1 is provided with uniformly distributed first sensors 4, and the first sensors 4 are buried in the middle or outer surface position of the barrel section 1;
the end socket section 2 is also a two-dimensional spiral winding layer, the end socket section 2 is provided with second sensors 5 which are uniformly distributed, and the second sensors 5 are buried in the middle or outer surface position of the end socket section 2;
the connecting section 3 connects the barrel section 1 and the head section 2 by a two-dimensional braiding stack structure which is sewn longitudinally, the connecting section 3 is provided with a third sensor 6, and the third sensor 6 is buried in the middle or outer surface position of the connecting section 3.
In the invention, the pressure-resistant gas cylinder adopts a two-dimensional winding structure formed by mixing carbon fibers and other composite materials, and has the comprehensive advantages of light weight, corrosion resistance, good rigidity, high pressure-resistant stability, strong designability and the like; one or more groups of strain sensors are embedded in different thickness positions of a winding structure of the pressure-resistant gas cylinder, and under a complex pressure condition, the strain sensors of the pressure-resistant gas cylinder sense tiny changes of different positions of the pressure-resistant gas cylinder, so that the pressure-bearing state of the high-pressure gas cylinder is predicted, the use state and the service life are further predicted, the pressure-bearing limit state is pre-warned in advance, and the service life and the service stability of the pressure-resistant gas cylinder made of the carbon fiber composite material are effectively improved.
Preferably, the first sensor 4 and the second sensor 5 are one or a combination of several of optical fibers, gratings, magnetic grids and strain gauges, the third sensor 6 is one or a combination of two of optical fibers and strain gauges, and the number of the first sensor 4, the number of the second sensor 5 and the number of the third sensor 6 can be flexibly adjusted according to the use requirement of the pressure-resistant gas cylinder, and the number is one or a plurality.
Further, the two-dimensional spiral winding layer consists of main fibers and auxiliary fibers; the outer diameter of the cylinder section 1 can be flexibly adjusted according to the size of the pressure-resistant gas cylinder, preferably 5-30 cm, the thickness of the cylinder section 1 is 5-40 mm, and the length of the cylinder section 1 is 0.5-3 m; the height of the end socket section 2 is 10-40 cm, and the thickness of the end socket section 2 is 5-40 mm; the length of the connecting section 3 is 20-40 cm. The proper size of the pressure-resistant gas cylinder can better exert the function.
On the other hand, the invention also provides a preparation method of the intelligent two-dimensional carbon fiber composite pressure-resistant gas cylinder, which comprises the steps of preparation of a cylinder body section, preparation of a seal head section, preparation of a connecting section and solidification molding of a prepreg fiber preform structure.
In the preparation of the barrel section, main fiber and auxiliary fiber are synchronously impregnated with composite resin, and a two-dimensional spiral winding layer is prepared on a core mold matrix according to a certain proportion and a certain winding angle; the method comprises the steps of preparing a two-dimensional carbon fiber winding layer, and embedding a first sensor in the middle or outer surface of the thickness of the two-dimensional spiral winding layer to obtain a cylinder section of the pressure-resistant gas cylinder; preferably, the main fiber of the two-dimensional spiral winding layer is used in an amount of more than 80%, the main fiber is carbon fiber, and the auxiliary fiber is one or a combination of more of silicon carbide fiber, alumina fiber, boron nitride fiber and basalt fiber; the glue content of the composite resin is between 20 and 50 percent, and the composite resin is one or a combination of a plurality of thermoplastic or thermosetting resins such as epoxy resin, phenolic resin, unsaturated polyester resin, polyurethane resin, polyethylene resin and the like; the spiral winding process is carried out along the axial outline of the barrel section, the thickness of the spiral winding layer is 5-10 cm, and the winding angle is 5-90 degrees.
In the preparation of the head section, main fiber and auxiliary fiber are synchronously impregnated with composite resin, and a two-dimensional spiral winding layer is prepared on a core mold matrix according to a certain proportion and a certain winding angle; while preparing the two-dimensional spiral winding layer, embedding a second sensor in the middle or outer surface position of the two-dimensional spiral winding layer to obtain a seal head section of the pressure-resistant gas cylinder; the two-dimensional spiral winding layer of the end socket section has the main fiber usage amount of more than 80%, the main fiber is carbon fiber, and the auxiliary fiber is one or a combination of more of aramid fiber, UHMWPE fiber and basalt fiber; the glue content of the composite resin is between 20 and 50 percent, and the composite resin is one or a combination of a plurality of thermoplastic or thermosetting resins such as epoxy resin, phenolic resin, unsaturated polyester resin, polyurethane resin, polyethylene resin and the like; the spiral winding process is carried out along the axial outline of the end socket section, the thickness of the spiral winding layer is 5-10 cm, and the winding angle is 5-90 degrees; the second sensor can be made of optical fiber, can be mixed with the end socket section fiber for synchronous winding and embedding, and the grating, the magnetic grating or the strain gauge can be embedded in a specific fiber winding position.
In the preparation of the connecting section, a two-dimensional braiding process is adopted to connect the laminated structure of the edge of the spiral winding layer of the barrel section and the edge of the spiral winding layer of the end socket section, and the laminated layers are formed into a whole through longitudinal suturing; while longitudinal stitching, introducing the third sensor and the fiber into a stitching structure in a mixed manner to obtain a preform gum dipping composite structure; the longitudinal stitching yarns comprise carbon fibers and other fibers, wherein the other fibers are one or more of aramid fibers, UHMWPE fibers, basalt fibers and glass fibers, and the ratio of the carbon fibers to the other fibers is 5:1-10:1; the third sensor can be an optical fiber or a strain gauge, can be mixed with the fiber used in the connecting section and introduced into the interlayer stitching structure, and can be embedded into the outer surface of the middle thickness position or the connecting position of the stitching structure when the optical fiber is used.
In the curing molding of the prepreg fiber preform structure, the prepared preform gum dipping composite structure is placed in a curing furnace for heating and curing, the curing temperature is 120-140 ℃, the curing time is 1-3 h, and the curing time can be flexibly adjusted according to the type and the curing property of the resin, and the cured product is demolded and secondarily processed for molding.
The following examples further illustrate the features and details of the present process, but the listed processes and data are not meant to limit the scope of the invention.
Example 1:
a specific preparation method of an intelligent two-dimensional carbon fiber composite pressure-resistant gas cylinder comprises the following steps:
(1) Preparation of a barrel section: preparing a two-dimensional spiral winding layer of a cylinder section by mixing T700 carbon fibers and silicon carbide fibers, wherein the weight ratio of the T700 carbon fibers to the silicon carbide fibers is 5:1, synchronously impregnating epoxy resin before winding the mixed fibers, controlling the glue content to be 40%, controlling the spiral winding angle to be 20 DEG, and finally preparing the cylinder section with the outer diameter of 10cm, the thickness of 1cm and the length of 1m, wherein the cylinder section is synchronously wound by adopting optical fibers and being incorporated into the mixed fibers;
(2) Preparing a seal head section: mixing T300 carbon fiber and aramid fiber in a weight ratio of 4:1, impregnating the mixed fiber with epoxy resin, controlling the glue content to be 30%, controlling the spiral winding angle to be 30 degrees, enabling the height of a final end socket section to be 25cm, enabling the thickness of the end socket section to be 1cm, and synchronously winding the end socket section by adopting optical fibers and incorporating the mixed fiber;
(3) Preparation of the connecting section: adopting T700 carbon fiber and UHMWPE fiber to mix, adopting two-dimensional braiding and inter-layer sewing technology to connect, wherein the length of a connecting section is 30cm, the mixing ratio of the T700 carbon fiber and the UHMWPE fiber is 5:1, and selecting optical fiber to be introduced into a sewing structure of the mixed fiber to obtain a preform gum dipping composite structure;
(4) Curing and forming the prepreg fiber preform structure: and (3) placing the preform gum dipping composite structure obtained in the step (3) in a curing furnace for heating and curing, wherein the curing temperature is 120 ℃, the curing time is 2h, and demoulding and secondary treatment forming are carried out on the finally cured product.
Example 2:
a specific preparation method of an intelligent two-dimensional carbon fiber composite pressure-resistant gas cylinder comprises the following steps:
(1) Preparation of a barrel section: preparing a two-dimensional spiral winding layer of a cylinder section by mixing T700 carbon fibers and alumina fibers, wherein the weight ratio of the T700 carbon fibers to the alumina fibers is 4:1, synchronously impregnating phenolic resin before winding the mixed fibers, controlling the glue content to be 20%, controlling the spiral winding angle to be 20 DEG, and finally preparing the cylinder section with the outer diameter of 10cm, the thickness of 2cm and the length of 1m, wherein the cylinder section is synchronously wound by adopting optical fibers and being incorporated into the mixed fibers;
(2) Preparing a seal head section: mixing T700 carbon fiber and basalt fiber in a weight ratio of 4:1, impregnating the mixed fiber with unsaturated polyester resin, controlling the glue content to 25%, controlling the spiral winding angle to 20 degrees, enabling the height of a final end socket section to be 20cm, enabling the thickness of the end socket section to be 2cm, and synchronously winding the end socket section by adopting optical fibers and incorporating the mixed fiber;
(3) Preparation of the connecting section: adopting T700 carbon fiber and glass fiber to mix, adopting a two-dimensional braiding and inter-layer sewing technology to connect, wherein the length of a connecting section is 32cm, the mixing ratio of the T700 carbon fiber and the glass fiber is 6:1, and selecting optical fibers to be introduced into a sewing structure of the mixed fibers to obtain a preform gum dipping composite structure;
(4) Curing and forming the prepreg fiber preform structure: and (3) placing the preform gum dipping composite structure obtained in the step (3) in a curing furnace for heating and curing, wherein the curing temperature is 140 ℃, the curing time is 1h, and demoulding and secondary treatment forming are carried out on the finally cured product.
Example 3:
a specific preparation method of an intelligent two-dimensional carbon fiber composite pressure-resistant gas cylinder comprises the following steps:
(1) Preparation of a barrel section: preparing a two-dimensional spiral winding layer of the cylinder section by mixing T300 carbon fibers and boron nitride fibers, wherein the weight ratio of the T300 carbon fibers to the boron nitride fibers is 6:1, synchronously impregnating polyurethane resin before mixing the fibers, controlling the glue content to be 30%, controlling the spiral winding angle to be 30 DEG, and finally preparing the outer diameter of the cylinder section to be 10cm, the thickness of the cylinder section to be 2cm, the length of the cylinder section to be 1m, embedding strain gauge sensors at intervals of 20cm along the length direction at the middle position of the thickness of the two-dimensional spiral winding layer of the cylinder section, and uniformly distributing the strain gauge sensors at intervals of 60 DEG along a section circle;
(2) Preparing a seal head section: mixing the T700 carbon fiber and the aramid fiber in a weight ratio of 4:1, impregnating the mixed fiber with epoxy resin, controlling the glue content to be 30%, controlling the spiral winding angle to be 40 degrees, enabling the height of a final end socket section to be 25cm, enabling the thickness of the end socket section to be 2cm, embedding strain gauge sensors at the middle position of the thickness of the end socket section along the outer contour, and uniformly distributing the embedded strain gauge sensors at intervals of 60 degrees along the section circle;
(3) Preparation of the connecting section: adopting T700 carbon fiber and basalt fiber to mix, adopting a two-dimensional braiding and inter-layer sewing technology to connect, wherein the length of a connecting section is 33cm, the mixing ratio of T700 carbon fiber and basalt fiber is 7:1, and selecting optical fiber to be introduced into a sewing structure of the mixed fiber to obtain a preform gum dipping composite structure;
(4) Curing and forming the prepreg fiber preform structure: and (3) placing the preform gum dipping composite structure obtained in the step (3) in a curing furnace for heating and curing, wherein the curing temperature is 120 ℃, the curing time is 3 hours, and demoulding and secondary treatment forming are carried out on the finally cured product.
Example 4:
a specific preparation method of an intelligent two-dimensional carbon fiber composite pressure-resistant gas cylinder comprises the following steps:
(1) Preparation of a barrel section: preparing a two-dimensional spiral winding layer of a cylinder section by mixing T800 carbon fibers and basalt fibers, wherein the weight ratio of the T800 carbon fibers to the basalt fibers is 5:1, synchronously impregnating epoxy resin before winding the mixed fibers, controlling the glue content to be 35%, controlling the spiral winding angle to be 45 DEG, and finally preparing the cylinder section with the outer diameter of 15cm, the thickness of 3cm and the length of 2m, and synchronously winding the cylinder section by adopting optical fibers to be incorporated into the mixed fibers;
(2) Preparing a seal head section: mixing T700 carbon fiber and aramid fiber in a weight ratio of 5:1, impregnating the mixed fiber with epoxy resin, controlling the glue content at 40%, controlling the spiral winding angle at 40 degrees, enabling the height of a final end socket section to be 25cm, enabling the thickness of the end socket section to be 3cm, and synchronously winding the end socket section by adopting optical fibers and incorporating the mixed fiber;
(3) Preparation of the connecting section: adopting T700 carbon fiber and UHMWPE fiber to mix, adopting two-dimensional braiding and inter-layer sewing technology to connect, wherein the length of a connecting section is 30cm, the mixing ratio of the T700 carbon fiber and the UHMWPE fiber is 5:1, and selecting optical fiber to be introduced into a sewing structure of the mixed fiber to obtain a preform gum dipping composite structure;
(4) Curing and forming the prepreg fiber preform structure: and (3) placing the preform gum dipping composite structure obtained in the step (3) in a curing furnace for heating and curing, wherein the curing temperature is 120 ℃, the curing time is 2h, and demoulding and secondary treatment forming are carried out on the finally cured product.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.

Claims (7)

1. The preparation method of the intelligent two-dimensional carbon fiber composite pressure-resistant gas cylinder is characterized in that the intelligent two-dimensional carbon fiber composite pressure-resistant gas cylinder comprises a cylinder body section, a seal head section and a connecting section for connecting the cylinder body section and the seal head section, wherein:
the cylinder body section is a two-dimensional spiral winding layer, the cylinder body section is provided with uniformly distributed first sensors, and the first sensors are buried in the middle or outer surface position of the cylinder body section;
the end socket section is also a two-dimensional spiral winding layer, the end socket section is provided with uniformly distributed second sensors, and the second sensors are buried in the middle or outer surface position of the end socket section;
the connecting section is used for connecting the barrel section and the end socket section through a two-dimensional weaving laminated structure which is longitudinally stitched, and is provided with a third sensor which is buried in the middle or outer surface position of the connecting section;
the two-dimensional spiral winding layer consists of main fibers and auxiliary fibers; the external diameter of the cylinder section is 5-30 cm, the thickness of the cylinder section is 5-40 mm, and the length of the cylinder section is 0.5-3 m; the height of the end socket section is 10-40 cm, and the thickness of the end socket section is 5-40 mm; the length of the connecting section is 20-40 cm;
the first sensor and the second sensor are one or a combination of a plurality of optical fibers, gratings, magnetic gratings and strain gauges, the third sensor is one or a combination of two of the optical fibers or the strain gauges, and the number of the first sensor, the second sensor and the third sensor is one or a plurality of;
a preparation method of an intelligent two-dimensional carbon fiber composite pressure-resistant gas cylinder comprises the following steps:
(1) Preparation of a barrel section: synchronously impregnating main fibers and auxiliary fibers into composite resin, and preparing a two-dimensional spiral winding layer on a core mold matrix by adopting a spiral winding process according to a certain proportion and a certain winding angle; the method comprises the steps of preparing a two-dimensional carbon fiber winding layer, and embedding a first sensor in the middle or outer surface of the thickness of the two-dimensional spiral winding layer to obtain a cylinder section of the pressure-resistant gas cylinder;
(2) Preparing a seal head section: synchronously impregnating main fibers and auxiliary fibers into composite resin, and preparing a two-dimensional spiral winding layer on a core mold matrix by adopting a spiral winding process according to a certain proportion and a certain winding angle; while preparing the two-dimensional spiral winding layer, embedding a second sensor in the middle or outer surface position of the two-dimensional spiral winding layer to obtain a seal head section of the pressure-resistant gas cylinder;
(3) Preparation of the connecting section: connecting the laminated structure of the spiral winding layer edge of the barrel section and the spiral winding layer edge of the end socket section by adopting a two-dimensional braiding process, and forming a whole through longitudinal suturing between the laminated layers; while longitudinal stitching, introducing the third sensor and the fiber into a stitching structure in a mixed manner to obtain a preform gum dipping composite structure;
(4) Curing and forming the prepreg fiber preform structure: and (3) placing the prepared preform gum dipping composite structure in a curing furnace for heating and curing, and demolding and secondarily treating and molding the cured product.
2. The method for preparing the intelligent two-dimensional carbon fiber composite pressure-resistant gas cylinder according to claim 1, wherein in the step (1), the usage amount of the main body fiber of the two-dimensional spiral winding layer of the cylinder body section is more than 80%, the main body fiber is carbon fiber, and the auxiliary fiber is one or a combination of more of silicon carbide fiber, aluminum oxide fiber, boron nitride fiber and basalt fiber.
3. The method for preparing the intelligent two-dimensional carbon fiber composite pressure-resistant gas cylinder according to claim 1, wherein in the step (2), the usage amount of the main body fiber of the two-dimensional spiral winding layer of the head section is more than 80%, the main body fiber is carbon fiber, and the auxiliary fiber is one or a combination of more of aramid fiber, UHMWPE fiber and basalt fiber.
4. The method for preparing the intelligent two-dimensional carbon fiber composite pressure-resistant gas cylinder according to claim 1, wherein in the step (1) and the step (2), the glue content of the composite resin is 20-50%, and the composite resin is one or a combination of several of epoxy resin, phenolic resin, unsaturated polyester resin, polyurethane resin, polyethylene resin thermoplastic or thermosetting resin.
5. The method for manufacturing an intelligent two-dimensional carbon fiber composite pressure-resistant gas cylinder according to claim 1, wherein in the step (1) and the step (2), the spiral winding process is performed along the axis of the cylinder section or the end enclosure section as a profile, the thickness of the spiral winding layers of the cylinder section and the end enclosure section is 5-10 cm, and the winding angle of the two-dimensional spiral winding layers is 5-90 °.
6. The method for producing an intelligent two-dimensional carbon fiber composite pressure resistant gas cylinder according to claim 1, wherein in the step (3), the longitudinally stitched yarn includes carbon fibers and other fibers, the other fibers are one or more combinations of aramid fibers, UHMWPE fibers, basalt fibers and glass fibers, and the ratio of the carbon fibers to the other fibers is 5:1 to 10:1.
7. The method for preparing the intelligent two-dimensional carbon fiber composite pressure-resistant gas cylinder according to claim 1, wherein in the step (4), the curing temperature is 120-140 ℃ and the curing time is 1-3 h.
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