CN115195161A - Manufacturing method of composite material gas cylinder with woven structure and composite material gas cylinder - Google Patents
Manufacturing method of composite material gas cylinder with woven structure and composite material gas cylinder Download PDFInfo
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- CN115195161A CN115195161A CN202210881117.XA CN202210881117A CN115195161A CN 115195161 A CN115195161 A CN 115195161A CN 202210881117 A CN202210881117 A CN 202210881117A CN 115195161 A CN115195161 A CN 115195161A
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Images
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
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/78—Moulding material on one side only of the preformed part
-
- 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
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/681—Component parts, details or accessories; Auxiliary operations
-
- 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
- F17C1/02—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge involving reinforcing arrangements
- F17C1/04—Protecting sheathings
- F17C1/06—Protecting sheathings built-up from wound-on bands or filamentary material, e.g. wires
-
- 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
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7158—Bottles
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a method for manufacturing a composite material gas cylinder with a woven structure and the composite material gas cylinder, which comprises the following steps: (1) Weaving fibers on the inner container to form a woven layer, and obtaining a woven body consisting of the inner container and the woven layer after weaving; (2) Dipping the woven body with glue solution to soak the woven layer; (3) Winding a temperature-resistant plastic tape film on the surface of the woven layer, extruding and constraining the glue solution and the woven layer, and obtaining a tape winding body after winding; (4) baking, curing and shaping the winding body; (5) And removing the temperature-resistant plastic tape film on the surface of the tape winding body, and treating to obtain the composite material gas cylinder. According to the invention, the temperature-resistant plastic tape film is wound on the surface of the woven layer impregnated with the glue solution, and the impregnated woven layer is extruded and restrained by using the temperature-resistant plastic tape film, so that the impregnation effect of the glue solution is improved, the stability and uniformity of the glue solution in the woven layer in the curing and shaping process are ensured, and the curing effect of the glue solution is ensured.
Description
Technical Field
The invention relates to the technical field of composite material manufacturing, in particular to a manufacturing method of a composite material gas cylinder with a woven structure and the composite material gas cylinder.
Background
At present, most of composite material gas cylinders are made by adopting a fiber winding aluminum alloy inner container or a steel inner container or a plastic inner container manufacturing technology, can be used as an energy carrier of automobiles, and are important components of natural gas and hydrogen fuel automobiles. With the development of hydrogen energy automobile technology, the requirements on the performances of the gas cylinder such as antiknock, pressure resistance and the like are higher and higher, and currently, the gas cylinder winding technology in the market has the following defects: because the impregnated single tows or fiber tapes are adopted for winding, the winding efficiency is lower; because the gum dipping and winding are carried out synchronously, the pollution of a working site is serious, and the phenomenon of site gum solution leakage is difficult to control effectively.
In order to improve the above problems, the prior patent documents include a technical solution of using a woven resin and then casting a resin, for example, chinese patent with application publication No. CN 113478791A discloses a method for preparing a woven gas cylinder and the woven gas cylinder thereof, which includes the following steps: 1. preparing an inner container; 2. a plurality of fiber layers are woven on the outer surface of the liner; 3. pouring resin, and curing and molding; 4. and carrying out air tightness detection, grinding and polishing treatment. The scheme can avoid the problems of site pollution and low winding efficiency caused by weaving by using the impregnated woven fibers on site, but the problems of insufficient impregnation and uneven glue solution distribution during curing molding exist due to later impregnation.
For another example, chinese patent application publication No. CN 107642678A discloses a three-dimensional woven pressure gas cylinder and a method for manufacturing the same, the pressure gas cylinder includes a metal inner container layer, a medium inlet and outlet, and a three-dimensional woven composite material outer layer, the medium inlet and outlet is disposed to form a gas cylinder inner layer together with an opening at one end of the metal inner container layer, so that gas can enter and exit the metal inner container layer through the medium inlet and outlet, the three-dimensional woven composite material outer layer is wrapped outside the gas cylinder inner layer, the three-dimensional woven composite material outer layer is formed by repeatedly impregnating and compounding a three-dimensional woven three-dimensional fabric and resin, the three-dimensional woven three-dimensional fabric sequentially includes the three-dimensional woven composite material inner layer and the three-dimensional woven composite material surface layer from inside to outside, and the three-dimensional woven composite material inner layer and the three-dimensional woven composite material surface layer are stitched and reinforced by a two-dimensional stitch reinforcement structure. The resin impregnation of the scheme adopts a resin vacuum transfer molding mode, and the impregnation mode has an unsatisfactory resin flowability effect on the three-dimensional woven structure which is woven and formed.
In conclusion, how to ensure the impregnation uniformity and the curing effect on the basis of improving the weaving efficiency and the field operation environment is a technical problem to be solved urgently.
Disclosure of Invention
The invention aims to provide a manufacturing method of a composite material gas cylinder with a woven structure and the composite material gas cylinder, which are used for solving the problems in the prior art.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a method for manufacturing a composite material gas cylinder with a woven structure, which comprises the following steps:
(1) Weaving fibers on the inner container to form a woven layer, and obtaining a woven body consisting of the inner container and the woven layer after weaving;
(2) Dipping the woven body with glue solution to soak the woven layer;
(3) Winding a temperature-resistant plastic tape film on the surface of the woven layer, extruding and restraining the glue solution and the woven layer, and obtaining a wound body after winding;
(4) Baking, curing and shaping the tape winding body;
(5) And removing the temperature-resistant plastic tape film on the surface of the tape winding body, and treating to obtain the composite material gas cylinder.
Preferably, the braided layer comprises an inner layer, a middle layer and an outer layer, the inner layer and the outer layer are both of 1-12 braided structures with braiding angles of 25-70 degrees, each braided structure comprises axial immobile yarns and braided yarns positioned on two sides of the axial immobile yarns, and the middle layer is of 1-8 winding structures with braiding angles of 80-90 degrees.
Preferably, the inner layer is woven by carbon fibers, the outer layer is woven by glass fibers, and the middle layer is woven by carbon fibers or mixed woven by carbon fibers and glass fibers.
Preferably, the inner layer is woven by aramid fibers, the middle layer is woven by carbon fibers, and the outer layer is woven by glass fibers.
Preferably, in the step (1), when knitting, one axially immobile yarn corresponds to two knitting yarns, the axially immobile yarns are distributed along the axial direction, the knitting yarns are symmetrically knitted around the axially immobile yarns in a left-right manner, the number of the fiber bundle heads of the axially immobile yarns is 88, and the number of the fiber bundle heads of the knitting yarns is 88 respectively.
Preferably, in the step (1), the inner container is kept at positive pressure when the woven layer is woven, and the inner container needs to be filled with 0.2-2 MPa of compressed air.
Preferably, the step (5) includes grinding, coating and packaging when the treatment is performed.
Preferably, the inner container is made of metal or plastic materials and has a smooth surface.
Preferably, the weaving fibers are carbon fibers, the carbon fibers are poured into spindles, a bobbin is installed on a machine, the yarn tension is adjusted, and the inner container is woven.
The invention also provides a composite material gas cylinder which is manufactured by applying the manufacturing method of the composite material gas cylinder with the braided structure, and the composite material gas cylinder comprises an inner container, a braided layer braided outside the inner container and glue liquid which is soaked in the braided layer and solidified.
Compared with the prior art, the invention has the following technical effects:
(1) According to the invention, the temperature-resistant plastic tape film is wound on the surface of the woven layer impregnated with the glue solution, and the impregnated woven layer is extruded and restrained by using the temperature-resistant plastic tape film, so that the impregnation effect of the glue solution is improved, the stability and uniformity of the glue solution in the woven layer in the curing and shaping process are ensured, and the curing effect of the glue solution is ensured;
(2) The braided layer comprises an inner layer, a middle layer and an outer layer, wherein the inner layer and the outer layer are both of 1-12 braided structures with braiding angles of 25-70 degrees, the middle layer is of 1-8 winding structures with braiding angles of 80-90 degrees, the outer layer generates friction with the outside and can resist external friction, the middle layer is radially wound to play a role in reinforcing a bottle body and bearing the pressure in the bottle, the inner layer is in contact with an inner container to generate surface friction, and friction damage generated by the inner container (a III-type metal inner container or an IV-type plastic inner container) can be resisted;
(3) The inner layer is woven by carbon fibers, the outer layer is woven by glass fibers, the middle layer is woven by carbon fibers or mixed woven by carbon fibers and glass fibers, the carbon fibers are designed in the inner layer and play a role in directly resisting the expansion of the pressure in the gas cylinder, the glass fibers are distributed in the outer layer and can reduce the manufacturing cost, and the middle layer is a transition layer from the inner layer to the outer layer and plays a role in carrying the inner layer and the outer layer;
(4) The weaving fiber adopts carbon fiber, the carbon fiber is poured into a spindle, a bobbin is arranged on a machine, the yarn tension is adjusted, and the carbon fiber is woven on the inner container, so that the carbon fiber can be used for realizing continuous weaving processing and forming, is not limited by length, and has light weight (the density is 1.62 g/cm) 3 ) The high-pressure anti-explosion braided steel oil pipe has the advantages of wear resistance, corrosion resistance, large anti-explosion pressure, small thermal expansion coefficient, clean braiding operation environment, long service life which is about 4 times that of a steel oil pipe, recyclable liner and partial fiber and reasonable use cost, and can work for a long time at the temperature of minus 40-120 ℃.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic sectional structure view of a composite gas cylinder of the present invention;
wherein, 1, an outer layer; 2. an intermediate layer; 3. an inner layer; 4. an inner container.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in 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 invention aims to provide a manufacturing method of a composite material gas cylinder with a woven structure and the composite material gas cylinder, which are used for solving the problems in the prior art.
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description thereof.
With reference to fig. 1, the invention provides a method for manufacturing a composite gas cylinder with a woven structure, which comprises the following steps:
(1) Preparing an inner container 4, wherein the inner container 4 can be made of metal materials, plastic materials and the like, the inner container 4 can be utilized to form a support of a woven structure during weaving, and meanwhile, the inner container is used as an inner wall which is in direct contact with a gas cylinder storage medium after the final forming of the weaving is finished. Weaving the weaving fiber on the inner container 4 to form a weaving layer, obtaining a weaving body consisting of the inner container 4 and the weaving layer together after weaving, wherein the weaving body is of a composite structure, and the weaving layer can be utilized to improve the bearing capacity of the inner container 4. The woven fiber can adopt one or more of carbon fiber, glass fiber and aramid fiber; of course, other woven fibers not mentioned may also be used. Specifically, the knitting may be performed by a known method such as a two-dimensional knitting method or a three-dimensional knitting method, or by a conventional technique.
(2) The woven body is treated by dipping glue solution, the glue solution can adopt epoxy resin or unsaturated polyester resin, if the mechanical property of the product is further improved, high-performance epoxy resin can be selected, and the specific use proportion is limited according to actual needs. In the dipping process, the woven layer and the inner liner 4 inside are dipped together, and the woven layer can be dipped for a plurality of times, so that the woven layer is soaked by the glue solution.
(3) And winding a temperature-resistant plastic tape film on the surface of the woven layer impregnated with the glue solution, extruding and constraining the glue solution and the woven layer, and winding to obtain a wound tape body. Because the weaving layer need solidify the design after flooding glue solution, no matter vertical or transversely place the weaving body and all can make the glue solution that has steeped flow downwards under the action of gravity, cause the uneven distribution of glue solution. After the temperature-resistant plastic tape film is wound, the woven layer and the glue solution of the woven layer can be protected and shaped, the glue solution can be limited in a space range limited by winding, the flowing capacity of the glue solution under the action of gravity is reduced, and the distribution uniformity of the glue solution is improved. In addition, the winding temperature-resistant plastic tape film can also play a role in extruding glue solution, the glue solution can be further filled in the gaps of the woven layer, and the impregnation effect is further improved, namely the composite effect that the glue solution can weave fibers is improved.
(4) The belt winding body is baked, cured and shaped, and can be put into an oven, and proper baking temperature and baking time are set. The inner container 4, the woven layer and the glue solution are shaped together, namely the inner container 4 and the woven layer are compounded into a whole after the glue solution is solidified.
(5) And removing the temperature-resistant plastic tape film on the surface of the shaped tape winding body, and performing surface treatment to obtain the composite material gas cylinder.
According to the invention, the temperature-resistant plastic tape film is wound on the surface of the woven layer impregnated with the glue solution, and the impregnated woven layer is extruded and restrained by using the temperature-resistant plastic tape film, so that the impregnation effect of the glue solution can be improved, the stability and uniformity of the glue solution in the woven layer in the curing and shaping process can be ensured, and the curing effect of the glue solution can be ensured.
As shown in fig. 1, the braided layer may include an inner layer 3, an intermediate layer 2 and an outer layer 1, wherein the inner layer 3 and the outer layer 1 are both of a 1-12-layer braided structure having a braiding angle of 25-70 °, and the intermediate layer 2 is of a 1-8-layer wound structure having a braiding angle of 80-90 °. The weaving structure comprises axial immobile yarns and weaving yarns positioned on two sides of the axial immobile yarns, and the weaving yarns are symmetrically woven around the axial immobile yarns in a bilateral mode. The winding structure is a weaving layer with annularly distributed fiber bundles, and is an important component for forming a gas cylinder top sealing structure and an annular structure. The outer layer 1 generates friction with the outside and can resist external friction, the middle layer 2 is radially wound to play a role in reinforcing the bottle body and bearing the pressure in the bottle, the inner layer 3 is in contact with the inner container 4 to generate surface friction, and friction damage generated by the inner container 4 (a III-type metal inner container or an IV-type plastic inner container) can be resisted.
The inner layer 3, the middle layer 2 and the outer layer 1 are not directly connected by weaving but are independent on the basis of adopting different weaving angles and weaving forms. When the impregnation is carried out, an impregnation layer can be formed between layers, on the basis of similar weaving angles of the inner layer 3 and the outer layer 1, the similar impregnation effect of the inner layer 3 and the outer layer 1 is convenient to form, and the close connection relationship between the inner layer 3 and the outer layer 1 by using glue solution is improved. Meanwhile, the winding structure of the middle layer 2 is convenient for the glue solution to pass through the outer layer 1 and enter the inner layer 3 when being impregnated along the winding path. In addition, on the basis of achieving a good impregnation effect, a mode of winding a temperature-resistant plastic tape film on the outer side of the woven layer is adopted, and the tightness between the glue solution and each layer can be further strengthened by means of the temperature-resistant plastic tape film, so that the effect of composite molding is ensured.
The inner layer 3 can be woven by carbon fibers, the outer layer 1 can be woven by glass fibers, and the middle layer 2 can be woven by carbon fibers or mixed woven by carbon fibers and glass fibers. The carbon fiber design plays the effect of directly resisting the expansion of pressure in the gas cylinder at inlayer 3, and glass fiber distributes at outer 1, but reduction in manufacturing cost, and intermediate level 2 is inlayer 3 to outer 1 transition layer, plays the effect of accepting inlayer 3 and outer 1.
The inner layer 3 can also be woven by aramid fibers, the middle layer 2 is woven by carbon fibers, and the outer layer 1 is woven by glass fibers. The inner layer 3 is made of aramid fibers and mainly plays a role in reinforcement and wear resistance, and the outer layer 1 is made of glass fibers and mainly aims to reduce the cost of raw materials.
When weaving is carried out in the step (1), one axial immobile yarn in the weaving structure corresponds to two weaving yarns, the axial immobile yarns are distributed along the axial direction, and the weaving yarns carry out bilateral symmetry weaving around the axial immobile yarns. The number of the fiber bundle heads of the axial immobile yarn can be 88, and the number of the fiber bundle heads of the weaving yarn is 88 respectively, so that the total number of the fiber bundle heads is 264 at the moment.
In the step (1), the inner container 4 may be kept at a positive pressure during the knitting of the knitted layer, and the inner container 4 may be filled with compressed air of 0.2 to 2MPa, for example. Keep inner bag 4 to be the state of malleation, can play the effective support to the surface weaving layer, do benefit to the shape of guaranteeing the weaving layer at the weaving in-process and more laminate inner bag 4, when the solidification shaping after the flooding glue solution, avoid the glue solution that inner bag 4 local sunken leads to uneven with weave unevenly simultaneously.
When the treatment in step (5) is performed, the steps of grinding, coating, packaging and the like can be included. Wherein, grinding refers to grinding the surface of the product which is solidified and formed and from which the temperature-resistant plastic tape film is removed. Painting refers to the painting of the ground product. And packaging refers to packaging the finished product after the paint treatment.
The inner container 4 can be made of metal or plastic material with a smooth surface, so that the braided layer can be effectively supported without affecting the normal braiding of the braided layer.
For some special gas cylinders, continuous weaving is needed for processing and forming, and the production process comprises the following steps: the method comprises the steps of cheese winding, bobbin yarn rewinding, bobbin yarn loading, tension control, inner container weaving, yarn trimming, gum dipping, drying and curing, surface finishing, polishing, spraying and finishing. Specifically, the woven fiber can be carbon fiber, the carbon fiber is poured into a spindle, a bobbin is installed on a machine, the yarn tension is adjusted, the inner container 4 is woven, and then heating curing and demolding trimming are carried out. High efficiency, weaving speed up to 12-20m/min, mass production in short time, and strictly controlled product quality. Can realize continuous weaving processing and forming by utilizing carbon fiber, is not limited by length, and has light weight (the density is 1.62 g/cm) 3 ) Wear resistance, corrosion resistance, large anti-explosion pressure, small thermal expansion coefficient, capability of working for a long time at the temperature of between 40 ℃ below zero and 120 ℃, clean weaving operation environment and 4 times of service life of a steel oil pipeThe inner container 4 and part of the fiber can be recycled, and the use cost is reasonable.
The invention also provides a specific manufacturing embodiment of the composite material gas cylinder with the braided structure, which comprises the following steps:
the first embodiment is as follows:
(1) Weaving: according to the size of the outer diameter of the designed gas cylinder, weaving and forming are carried out on an inner container 4, an inner layer 3 adopts 4 layers of carbon fibers, an intermediate layer 2 adopts 1-8 layers of carbon fiber weaving and/or carbon fiber glass fiber mixed weaving, an outer layer 1 adopts 6 layers of glass fibers, and the inner container 4 is filled with 0.8MPa of compressed air;
(2) Gluing: the woven body is impregnated with glue solution by the inner container 4, the glue solution is epoxy resin, and the woven layer is soaked by the glue solution;
(3) Tape winding: coating the gel coat in the step (2), and winding a layer of temperature-resistant plastic tape film on the surface to play a role in protection and sizing;
(4) Baking: putting the product prepared in the step (3) into an oven for baking, curing and shaping, and heating to 135-145 ℃;
(5) Belt stripping: removing the plastic tape film wound on the surface of the product cured and shaped in the step (4);
(6) Grinding: grinding the surface of the product in the step (5);
(7) Coating: spraying the gas cylinder ground in the step (6);
(8) Packaging: and packaging and warehousing the finished product.
Example two
(1) Weaving: according to the size of the outer diameter of the designed gas cylinder, weaving and forming are carried out on the inner container 4, the inner layer 3 is made of 2 layers of aramid fiber, the middle layer 2 is made of 2 layers of carbon fiber, the outer layer 1 is made of 6 layers of glass fiber, and the inner container 4 is filled with 0.8MPa of compressed air;
(2) Gluing: the woven body is impregnated with glue solution by the belt inner container 4, the glue solution is epoxy resin, and the woven layer is soaked by the glue solution;
(3) Tape winding: coating the gel coat in the step (2), and winding a layer of temperature-resistant plastic tape film on the surface to play a role in protection and shaping;
(4) Baking: putting the product prepared in the step (3) into an oven for baking, curing and shaping, and heating to 145-150 ℃;
(5) Belt stripping: removing the plastic tape film wound on the surface of the product cured and shaped in the step (4);
(6) Grinding: grinding the surface of the product in the step (5);
(7) Coating: spraying the gas cylinder ground in the step (6);
(8) Packaging: and packaging and warehousing the finished product.
With reference to fig. 1, the present invention further provides a composite gas cylinder, which can be manufactured by applying the method for manufacturing a composite gas cylinder with a braided structure described above or the method for manufacturing the composite gas cylinder according to the first and second embodiments, wherein the composite gas cylinder includes an inner container 4, a braided layer braided outside the inner container 4, and a glue solution impregnated in the braided layer and cured. The inner container 4 may be made of metal or plastic. The woven layer may comprise an inner layer 3, an intermediate layer 2 and an outer layer 1. The glue solution can adopt epoxy resin or unsaturated polyester resin.
The carbon fiber is a material with excellent mechanical property, the specific gravity is less than 1/4 of that of steel, the tensile strength is generally more than 3500MPa, and the elastic modulus of the tensile strength is 23000-43000MPa and is higher than that of the steel. Therefore, the specific strength of CFRP, i.e. the ratio of the strength of the material to its density, can reach 2000MPa (g/cm) 3 ) Whereas the specific strength of A3 steel is only 59MPa (g/cm) 3 ) On the other hand, the specific modulus is higher than that of steel, and the higher the specific strength of the material is, the lighter the material is, the higher the strength is.
The carbon fiber is inorganic polymer fiber with carbon content more than 92%, not only has inherent characteristics of carbon material, but also has soft processability of textile fiber, is a new generation of reinforced fiber, has Young modulus about 2 times of that of the traditional Glass fiber, is insoluble and non-swelling in organic solvent and acid and alkali, and has high corrosion resistance. Moreover, carbon fibers have high axial strength and modulus, no creep, good fatigue resistance, specific heat and conductivity between nonmetal, small thermal expansion coefficient, good corrosion resistance, low fiber density, good X-ray permeability, but poor impact resistance, are easily damaged, oxidized under the action of strong acid, and carbonized metal when combined with metal.
The woven fabric to be braided may be selected from a variety of fibers including carbon fibers. Compared with common metal gas cylinders and plastic gas cylinders, the carbon fiber gas cylinder has the characteristics of light weight, high compression resistance, no rustiness, corrosion resistance, low thermal expansion coefficient, long service life and the like, and can be widely applied to preparation of various gas cylinders.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. The manufacturing method of the composite material gas cylinder with the woven structure is characterized by comprising the following steps of:
(1) Weaving fibers on the inner container to form a woven layer, and obtaining a woven body consisting of the inner container and the woven layer after weaving;
(2) Dipping the woven body with glue solution to soak the woven layer;
(3) Winding a temperature-resistant plastic tape film on the surface of the woven layer, extruding and constraining the glue solution and the woven layer, and obtaining a tape winding body after winding;
(4) Baking, curing and shaping the tape winding body;
(5) And removing the temperature-resistant plastic tape film on the surface of the tape winding body, and treating to obtain the composite material gas cylinder.
2. The method for manufacturing the composite material gas cylinder with the woven structure according to claim 1, is characterized in that: the weaving layer comprises an inner layer, a middle layer and an outer layer, the inner layer and the outer layer are both 1-12 layers of weaving structures with weaving angles of 25-70 degrees, each weaving structure comprises axial immobile yarns and weaving yarns positioned on two sides of the axial immobile yarns, and the middle layer is a winding structure with 1-8 layers of weaving angles of 80-90 degrees.
3. The method for manufacturing the composite material gas cylinder with the woven structure according to claim 2, is characterized in that: the inner layer is woven by carbon fibers, the outer layer is woven by glass fibers, and the middle layer is woven by carbon fibers or mixed woven by carbon fibers and glass fibers.
4. The method for manufacturing the composite material gas cylinder with the woven structure according to claim 2, is characterized in that: the inner layer is woven by aramid fibers, the middle layer is woven by carbon fibers, and the outer layer is woven by glass fibers.
5. A method for manufacturing a composite material cylinder with a woven structure according to any one of claims 1 to 4, characterized in that: when the knitting is carried out in the step (1), one axial immobile yarn corresponds to two knitting yarns, the axial immobile yarns are distributed along the axial direction, the knitting yarns are symmetrically knitted around the axial immobile yarns in the left-right direction, the number of fiber bundle heads of the axial immobile yarns is 88, and the number of the fiber bundle heads of the knitting yarns is 88 respectively.
6. The method for manufacturing the composite material gas cylinder with the woven structure according to claim 5, is characterized in that: in the step (1), the inner container is kept at positive pressure when a weaving layer is woven, and the inner container is filled with 0.2-2 MPa of compressed air.
7. The method for manufacturing the composite material gas cylinder with the woven structure according to claim 5, is characterized in that: and (5) when the treatment is carried out, grinding, coating and packaging are included.
8. The method for manufacturing the composite material gas cylinder with the woven structure according to claim 5, is characterized in that: the inner container is made of metal or plastic materials and has a smooth surface.
9. The method for manufacturing the composite material gas cylinder with the woven structure according to claim 5, is characterized in that: the weaving fiber adopts carbon fiber, the carbon fiber is poured into a spindle, a bobbin is installed on a machine, the yarn tension is adjusted, and the inner container is woven.
10. A composite gas cylinder manufactured by the method for manufacturing a composite gas cylinder with a woven structure according to any one of claims 1 to 9, comprising an inner container, a woven layer woven outside the inner container, and a glue solution impregnated in the woven layer and cured.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116608335A (en) * | 2023-07-21 | 2023-08-18 | 山东中恒景新碳纤维科技发展有限公司 | Continuously woven carbon fiber composite material oil pipe and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107642678A (en) * | 2017-09-27 | 2018-01-30 | 山东中恒景新碳纤维科技发展有限公司 | A kind of 3 D weaving pressure cylinder and preparation method thereof |
| CN109483910A (en) * | 2018-12-26 | 2019-03-19 | 上海绎迪新材料科技有限公司 | A kind of composite material vessel dry method winding, molding method |
| CN113478791A (en) * | 2021-07-16 | 2021-10-08 | 合肥工业大学 | Preparation method of woven gas cylinder and woven gas cylinder |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107642678A (en) * | 2017-09-27 | 2018-01-30 | 山东中恒景新碳纤维科技发展有限公司 | A kind of 3 D weaving pressure cylinder and preparation method thereof |
| CN109483910A (en) * | 2018-12-26 | 2019-03-19 | 上海绎迪新材料科技有限公司 | A kind of composite material vessel dry method winding, molding method |
| CN113478791A (en) * | 2021-07-16 | 2021-10-08 | 合肥工业大学 | Preparation method of woven gas cylinder and woven gas cylinder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116608335A (en) * | 2023-07-21 | 2023-08-18 | 山东中恒景新碳纤维科技发展有限公司 | Continuously woven carbon fiber composite material oil pipe and preparation method thereof |
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