CN113183496A - Three-dimensional braided composite material marine catheter and preparation method thereof - Google Patents
Three-dimensional braided composite material marine catheter and preparation method thereof Download PDFInfo
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- CN113183496A CN113183496A CN202110126474.0A CN202110126474A CN113183496A CN 113183496 A CN113183496 A CN 113183496A CN 202110126474 A CN202110126474 A CN 202110126474A CN 113183496 A CN113183496 A CN 113183496A
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- 239000002131 composite material Substances 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 229920005989 resin Polymers 0.000 claims abstract description 49
- 239000011347 resin Substances 0.000 claims abstract description 49
- 238000000034 method Methods 0.000 claims abstract description 30
- 238000005516 engineering process Methods 0.000 claims abstract description 24
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 22
- 239000004917 carbon fiber Substances 0.000 claims abstract description 22
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000011664 nicotinic acid Substances 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000013329 compounding Methods 0.000 claims abstract description 7
- 238000001721 transfer moulding Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 4
- 238000009941 weaving Methods 0.000 claims description 42
- 238000013016 damping Methods 0.000 claims description 17
- 239000011159 matrix material Substances 0.000 claims description 14
- 238000009954 braiding Methods 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 238000012546 transfer Methods 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 4
- 230000002209 hydrophobic effect Effects 0.000 claims description 3
- 238000010104 thermoplastic forming Methods 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims 4
- 230000007797 corrosion Effects 0.000 abstract description 12
- 238000005260 corrosion Methods 0.000 abstract description 12
- 238000013461 design Methods 0.000 abstract description 6
- 239000013535 sea water Substances 0.000 abstract description 5
- 230000003014 reinforcing effect Effects 0.000 description 8
- 229920001187 thermosetting polymer Polymers 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 241000283153 Cetacea Species 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 2
- 230000009189 diving Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
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- 238000009757 thermoplastic moulding Methods 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 210000000006 pectoral fin Anatomy 0.000 description 1
- 238000009745 resin transfer moulding Methods 0.000 description 1
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/001—Pipes; Pipe joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
- B63H5/14—Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in non-rotating ducts or rings, e.g. adjustable for steering purpose
- B63H5/15—Nozzles, e.g. Kort-type
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a three-dimensional braided composite material marine conduit and a preparation method thereof, wherein an integrally formed bionic bulge structure is arranged at the tail edge of the marine conduit, the marine conduit is formed by compounding a carbon fiber three-dimensional braided structure and a water-resistant resin material, a propeller blade and a propeller hub are arranged in the marine conduit, and the bionic bulge structure comprises saw-tooth bulges and arc-shaped bulges which are uniformly arranged along the circumference. According to the invention, the three-dimensional woven structure prefabricated member and the water-resistant resin are compositely manufactured by a vacuum auxiliary technology or an RTM (resin transfer molding) process, and the special design of the tail edge structure is carried out, so that the noise and vibration generated by the marine ducted propeller can be effectively reduced, the bearing efficiency is greatly improved, the structure weight is reduced, the underwater bearing and corrosion resistance are improved, and the marine ducted propeller has a longer service cycle and more excellent seawater corrosion resistance.
Description
Technical Field
The invention relates to the technical field of marine ship equipment, in particular to a three-dimensional braided composite material marine conduit and a preparation method thereof.
Background
With the development of resources and national development, the marine environment is more and more emphasized by various social circles, wherein the marine ship needs the technology of a duct propeller in daily operation, and the duct is used as an additional device of the ship propeller, so that the duct not only guides the incoming flow in front of the propeller in a standard way, but also plays a certain role in protecting the propeller inside the duct.
At present, most of guide pipes are made of copper alloy, so that the weight is large, and large noise is often accompanied in the process of ship propulsion, the source of the noise is not only from the noise of a propeller, but also the noise insulation performance of a round pipe is a main concern of all circles of society. In military marine vessels, such as submarines and other military marine weapons, the noise generated by the ducted propellers is often fatal, and the important characteristics of the noise reduction structure determine the concealment characteristics in the marine vessel battle. In addition, the ducted propeller generates certain noise in the marine field, which threatens marine animals and destroys the ecological environment. In addition, the weight of the marine vessel is often reduced, and the conventional marine conduit is mostly prepared from copper alloy, so that the marine vessel has the advantages of poor corrosion resistance, short service period, higher quality and no accordance with the technical requirements of current requirements on large endurance and light weight.
The three-dimensional braided composite material marine conduit and the preparation method thereof are developed, the three-dimensional braided prefabricated member and the water-resistant resin are compositely manufactured, the three-dimensional braided cylindrical shell structure is more suitable for wrapping the propeller, the structure is more compact, and the three-dimensional braiding technology is mainly used in the fields of aviation and deep sea diving devices so as to realize the characteristics of high strength and weight reduction.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects of the prior art, the invention provides the three-dimensional braided composite material marine conduit and the preparation method thereof, the three-dimensional braided structure prefabricated member and the water-resistant resin are compositely manufactured by a vacuum auxiliary technology or an RTM (resin transfer molding) process, and the three-dimensional braided composite material marine conduit has a specially designed trailing edge structure, can greatly improve the bearing efficiency, reduce the structure weight and the noise, and has a longer service cycle.
The technical scheme is as follows: in order to achieve the purpose, the invention provides a three-dimensional braided composite material marine conduit, wherein an integrally-formed bionic bulge structure is arranged at the tail edge of the marine conduit, the marine conduit is formed by compounding a carbon fiber three-dimensional braided structure and a resin matrix, the bionic bulge structure comprises saw-tooth-shaped bulges and arc-shaped bulges which are uniformly arranged along the circumference, the marine conduit is connected with a ship body through a connecting box body, and propeller blades and a propeller hub are arranged in the marine conduit.
Furthermore, the bionic bulge structure is even in number, wherein the sawtooth-shaped bulge and the circular arc-shaped bulge respectively account for half, and the sawtooth-shaped bulge and the circular arc-shaped bulge are uniformly arranged at intervals along the circumference.
Further, the three-dimensional structure of weaving of carbon fiber is one or more in 2.5D weaving structure, warp direction reinforcing 2.5D weaving structure, latitudinal direction reinforcing 2.5D weaving structure, normal direction reinforcing 2.5D weaving structure, the two-way reinforcing 2.5D weaving structure of longitude and latitude.
Further, the carbon fiber selected for the ocean conduit is carbon fiber with the strength of more than 3000mpa and the modulus of more than 2000gpa, and comprises one or more of T300 carbon fiber and T700 carbon fiber.
Furthermore, the volume of the resin matrix and the volume of the carbon fiber three-dimensional woven structure respectively account for 40-60% of the volume of the ocean conduit.
Further, the surface of the marine conduit is coated with a damping layer, so that a certain insulation effect on noise can be generated. The damping layer can be made of any one of asphalt, soft rubber or high polymer materials.
Furthermore, the resin matrix is water-resistant resin which can resist the corrosion of external seawater.
The preparation method of the three-dimensional braided composite material marine catheter comprises the following steps:
s1, integrally weaving the marine conduit prefabricated member by using a three-dimensional weaving technology, wherein the tail edge of the marine conduit prefabricated member is provided with a bionic bulge structure (comprising saw-tooth-shaped bulges and circular-arc-shaped bulges) which is integrally woven, aiming at a special tail edge structure, the three-dimensional weaving technology is combined with a yarn adding and reducing process to realize integral weaving, and finally the three-dimensional woven marine conduit prefabricated member is formed;
s2, a hydrophobic resin matrix is used as a raw material, a vacuum auxiliary forming process or a resin transfer thermoplastic forming process is adopted to complete a resin compounding process of the three-dimensional braided marine conduit prefabricated part, and preliminary preparation of the marine conduit is completed;
s3, after the steps are completed, coating and processing a damping layer on the outer layer of the primarily formed marine conduit, and completing the preparation of the three-dimensional braided composite material marine conduit.
Further, the three-dimensional weaving technology adopts one or more of a 2.5D weaving technology, a warp-wise reinforced 2.5D weaving technology, a weft-wise reinforced 2.5D weaving technology, a normal reinforced 2.5D weaving technology and a warp-wise and weft-wise reinforced 2.5D weaving technology.
Further, in step S2, the resin transfer molding is performed by using a special mold for the special trailing edge structure.
Has the advantages that: compared with the prior art, the three-dimensional braided composite material marine catheter and the preparation method thereof provided by the invention have the following advantages:
(1) the three-dimensional woven structure prefabricated member and the water-resistant resin are manufactured in a composite mode through a vacuum auxiliary technology or an RTM (resin transfer molding) process, underwater bearing and corrosion resistance are effectively improved under the condition that the weight of the structure is reduced, and the three-dimensional woven structure prefabricated member has a longer service period and a more excellent seawater corrosion resistance characteristic.
(2) The tail edge of the marine duct adopts a bionic concave-convex structure design, and the damping layer is coated on the surface of the marine duct, so that the bearing efficiency of the duct is improved, and the noise and vibration generated by the marine duct propeller are greatly reduced.
Drawings
The present invention will be further described and illustrated with reference to the following drawings.
FIG. 1 is a schematic overall structure of a preferred embodiment of the present invention;
FIG. 2 is a side view of a preferred embodiment of the present invention;
FIG. 3 is an enlarged partial view of the trailing edge of the preferred embodiment of the present invention;
the parts in the drawings are numbered as follows: 1. a catheter body; 2. a bionic bulge structure; 3. a propeller blade; 4. a propeller hub; 2-1, zigzag protrusions; 2-2, circular arc bulge.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings to more clearly and completely illustrate the technical solutions of the present invention.
The invention leads the thermosetting resin matrix to be solidified and crosslinked with the three-dimensional woven structure in the solidification process by a vacuum auxiliary technology or a resin transfer thermoplastic technology, and finally the thermosetting resin matrix is molded on the core mold. The three-dimensional braided cylindrical shell structure is more suitable for wrapping the propeller, the structure is more compact, and the three-dimensional braided technology is mainly used in the fields of aviation and deep sea diving devices to realize the characteristics of high strength and weight reduction.
The different structures of the tail edge of the catheter comprise a sawtooth shape and a circular arc shape, and the main inspiration comes from the development of the animal bionic technology. The silent flight capability is a problem to be solved urgently in the motion of aviation and deep sea submarines, wherein the flight data acquisition of the owl shows the bionic technical characteristics of the owl, the flight data display the outline of saw teeth, a brand new thought is provided for the design of the tail edge of the ocean conduit, and the saw teeth design with different proportions is carried out on the tail edge of the conduit, so that the noise can be effectively resisted. The structural characteristics of the concave-convex arc are derived from the fact that scientists find that a structure protruding from the front edge of a pectoral fin of an ocean whale provides high lift force for the whale, and the structure is favorable for reducing the flow direction vortex of resistance, so that the purposes of reducing the resistance and improving the lift force are achieved. After the two structures are combined, the bearing efficiency of the conduit is improved, the generated noise is greatly reduced, in addition, the damping layer is coated on the outer layer of the resin of the conduit, the sound wave generated by the propeller pushing seawater can be absorbed by the damping layer, and the design of the damping layer can also generate a certain isolation effect on the noise.
In addition to the characteristic of the marine environment often accompanied by corrosive effects, unlike other components, the marine vessel, as a critical part of the marine vessel, is fatal in many cases from the destruction of its material properties. Therefore, the corrosion characteristics of ships need to make certain judgment on the selection of the material of the conduit, the selection of matrix resin is the key of corrosion resistance of the integral member for the marine conduit formed by curing carbon fibers and resin through a vacuum auxiliary process, and the water-resistant resin is selected to be more suitable for the application of the marine conduit. The microcosmic functional groups of the resin are different, the characteristics of the internal structure of the resin are often required to be known, and the resin containing less water-absorbing functional groups is selected to achieve the aim of hydrophobicity.
As shown in fig. 1-3, a preferred embodiment of a three-dimensional braided composite material marine conduit is provided, the trailing edge of the marine conduit 1 is provided with an integrally formed bionic protruding structure 2, and the marine conduit 1 is formed by compounding a carbon fiber three-dimensional braided structure and a water-resistant resin matrix through a vacuum assisted technology or an RTM (resin transfer molding) process. In actual use, the marine vessel 1 is connected with the hull of the vessel by a connecting box and internally mounted with propeller blades 3 and propeller hubs 4.
Further, the three-dimensional structure of weaving of carbon fiber is one or more in 2.5D weaving structure, warp direction reinforcing 2.5D weaving structure, latitudinal direction reinforcing 2.5D weaving structure, normal direction reinforcing 2.5D weaving structure, the two-way reinforcing 2.5D weaving structure of longitude and latitude. The 2.5D structure adopts a layered connection mode to bind adjacent yarn layers, and is a layer-by-layer angle interlocking structure.
Further, the carbon fiber selected for the ocean conduit 1 is carbon fiber with strength greater than 3000mpa and modulus greater than 2000gpa, and comprises one or more of T300 carbon fiber and T700 carbon fiber. The volume of the resin matrix and the volume of the carbon fiber woven layer in the marine catheter 1 respectively account for 40-60%.
In the embodiment, the marine conduit 1 is in a radial contraction structure from the front edge to the tail edge, the bionic bulge structures 2 adopt a mode of combining saw-tooth shapes 2-1 and circular-arc-shaped bulges 2-2, the saw-tooth shapes 2-1 and the circular-arc-shaped bulges 2-2 are uniformly arranged at intervals along the circumferential direction of the tail edge of the marine conduit 1, the bionic bulge structures 2 are even in number, and the saw-tooth shapes and the circular-arc shapes account for half of each other.
Further, the surface of the marine pipe 1 is coated with a damping layer, which can isolate noise to a certain extent. The damping layer is made of any one of asphalt, soft rubber or high polymer materials, and the thickness of the damping layer is 1-1.5 mm.
The three-dimensional braided composite material marine catheter in the preferred embodiment is prepared by the following method:
(1) according to the drawing requirements of three-dimensional weaving of the marine conduit, the conduit structure with saw-tooth-shaped and arc-shaped bulges arranged at intervals at the tail edge is integrally woven by utilizing a three-dimensional weaving technology, and the special tail edge structure is periodically woven in a yarn adding and reducing mode to finally form a prefabricated member of the three-dimensional weaving marine conduit.
(2) The method comprises the steps of finishing a resin composite process of a three-dimensional woven structure prefabricated part by taking a hydrophobic resin matrix as a raw material and adopting a vacuum auxiliary forming process or a resin transfer thermoplastic forming process to finish primary preparation of the marine conduit, wherein aiming at a special trailing edge design process, a special mould is adopted to finish resin transfer moulding.
(3) After the steps are completed, the outer layer of the preliminarily molded marine conduit is processed to form a damping coating, and the preparation of the three-dimensional braided composite material marine conduit is completed.
According to the invention, the three-dimensional woven structure prefabricated member and the water-resistant resin are compositely manufactured by a vacuum auxiliary technology or an RTM (resin transfer molding) process, and the special design of the tail edge structure is carried out, so that the noise and vibration generated by the marine ducted propeller can be effectively reduced, the bearing efficiency is greatly improved, the structure weight is reduced, the underwater bearing and corrosion resistance are improved, and the marine ducted propeller has a longer service cycle and more excellent seawater corrosion resistance.
Several specific examples will be given below for a detailed description.
Example 1
The example takes a ka4-70 type propeller as an implementation object, the length of the ocean conduit in the example is 100mm, the diameter from the front edge to the tail edge is 300-200mm, the weaving thickness is 10mm, the yarn adopts T700 carbon fiber, the thickness of the damping layer is 1.2mm, and the volume fraction of the thermosetting modified resin is 40%.
The preparation method comprises the following specific steps:
according to the drawing requirements of the marine conduit, the conduit structure with zigzag and concave-convex arc-shaped alternate tail edges is integrally woven by using a three-dimensional weaving technology, a warp-wise reinforced 2.5D weaving structure is adopted for weaving, and the special-shaped tail edge part of the marine conduit is realized by adopting plus and minus yarns in three-dimensional weaving, so that a prefabricated member for three-dimensionally weaving the marine conduit is finally formed.
The water-resistant epoxy resin is used as a substrate raw material, a resin transfer thermoplastic molding process is adopted to complete a resin compounding process of the three-dimensional woven prefabricated member, the marine conduit is cured at 80 ℃ for eight hours, and the resin content is kept at 40%.
And then, processing a damping coating on the outer layer of the three-dimensional braided marine conduit to obtain a thickness of 1.5mm, and finally finishing the preparation of the three-dimensional braided marine conduit.
The three-dimensional braided marine duct effectively reduces noise and vibration generated by the marine duct propeller, greatly improves bearing efficiency, reduces structural weight, reduces noise, and has a longer service period. Compared with the traditional three-dimensional braided marine conduit without the coating and the sawtooth tail edge, the noise is reduced by 30%, compared with the traditional alloy marine conduit, the strength is improved by 20%, compared with the traditional alloy three-dimensional braided marine conduit, the weight is reduced by 25%, and the corrosion resistance is better.
Example 2
The example uses a ka470 type propeller, the length of the ocean conduit in the example is 200mm, the inner diameter is 400-200mm from the front edge to the tail edge, the weaving thickness is 15mm, the yarn adopts T700 carbon fiber, the thickness of the damping layer is 1.2mm, and the volume fraction of the thermosetting modified resin is 60%.
The preparation method comprises the following specific steps
According to the drawing requirements of the marine conduit, the conduit structure with the sawtooth-shaped tail edge and the concave-convex arc-shaped tail edge combined is integrally woven by utilizing a three-dimensional weaving technology, a warp-direction reinforced 2.5D weaving structure is adopted for weaving, the special-shaped tail edge part of the marine conduit is realized by adopting plus and minus yarns in three-dimensional weaving, and finally a prefabricated part for three-dimensionally weaving the marine conduit is formed.
The water-resistant modified thermosetting epoxy resin is used as a substrate raw material, a resin transfer thermoplastic molding process is adopted to complete a resin compounding process of the three-dimensional woven prefabricated member, the marine conduit is cured at 80 ℃ for eight hours, and the resin content is kept at 60%.
And (3) processing a damping coating on the outer layer of the three-dimensional braided marine catheter to obtain a thickness of 1.5mm, and finally finishing the preparation of the three-dimensional braided marine catheter.
The obtained three-dimensional braided marine duct reduces noise and vibration generated by the marine duct propeller, greatly improves bearing efficiency, reduces structural weight, reduces noise, and has a longer service period. Compared with the traditional three-dimensional braided marine conduit without the coating and the sawtooth tail edge, the noise is reduced by 35%, compared with the traditional alloy marine conduit, the strength is improved by 30%, compared with the traditional alloy three-dimensional braided marine conduit, the weight is reduced by 30%, and the corrosion resistance is better.
The above detailed description merely describes preferred embodiments of the present invention and does not limit the scope of the invention. Without departing from the spirit and scope of the present invention, it should be understood that various changes, substitutions and alterations can be made herein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (10)
1. The three-dimensional braided composite material marine conduit is characterized in that a bionic protrusion structure (2) which is integrally formed is arranged at the tail edge of the marine conduit (1), the marine conduit (1) is formed by a carbon fiber three-dimensional braided structure and a resin matrix in a composite mode, a propeller blade (3) and a propeller hub (4) are installed in the marine conduit (1), and the bionic protrusion structure (2) comprises saw-tooth-shaped protrusions (2-1) and circular-arc-shaped protrusions (2-2) which are uniformly arranged along the circumference.
2. The three-dimensional braided composite material marine conduit according to claim 1, wherein the bionic bulge structures (2) are even in number, wherein the sawtooth-shaped bulges (2-1) and the circular arc-shaped bulges (2-2) respectively account for half of the bionic bulge structures, and the sawtooth-shaped bulges (2-1) and the circular arc-shaped bulges (2-2) are uniformly arranged at intervals along the circumference.
3. The marine vessel of claim 1, characterized in that the carbon fiber used for the marine vessel (1) has a strength of more than 3000mpa and a modulus of more than 2000 gpa.
4. The three-dimensional braided composite marine catheter of claim 1, wherein said carbon fiber three-dimensional braided structure is one or more of a 2.5D braided structure, a 2.5D braided structure with warp reinforcement, a 2.5D braided structure with weft reinforcement, a 2.5D braided structure with normal reinforcement, and a 2.5D braided structure with warp and weft reinforcement.
5. The marine vessel of claim 1, wherein the volume of the resin matrix and the three-dimensional woven structure of carbon fibers are 40-60% of the volume of the marine vessel (1).
6. The marine conduit of claim 1, wherein said resin matrix is a water resistant resin material.
7. A three-dimensional braided composite marine conduit according to claim 1, wherein the surface of the marine conduit (1) is coated with a damping layer.
8. A preparation method of a three-dimensional braided composite material marine catheter is characterized by comprising the following steps:
s1, integrally weaving the marine catheter prefabricated member by using a three-dimensional weaving technology, wherein the tail edge of the marine catheter prefabricated member is provided with a bionic bulge structure (2) formed by integrally weaving, and aiming at a special tail edge structure, the three-dimensional weaving technology is combined with a yarn adding and reducing process to realize the integral weaving, so that the three-dimensional woven marine catheter prefabricated member is finally formed;
s2, a hydrophobic resin matrix is used as a raw material, a vacuum auxiliary forming process or a resin transfer thermoplastic forming process is adopted to complete a resin compounding process of the three-dimensional braided marine conduit prefabricated part, and preliminary preparation of the marine conduit is completed;
s3, after the steps are completed, coating and processing a damping layer on the outer layer of the primarily formed marine conduit, and completing the preparation of the three-dimensional braided composite material marine conduit.
9. The method for preparing a three-dimensional braided composite marine catheter according to claim 8, wherein the three-dimensional braiding technique employs one or more of a 2.5D braiding technique, a warp-wise reinforced 2.5D braiding technique, a weft-wise reinforced 2.5D braiding technique, a normal-wise reinforced 2.5D braiding technique, and a warp-wise reinforced 2.5D braiding technique.
10. The method as claimed in claim 8, wherein the step S2 of resin transfer molding is performed by using a special mold for the special trailing edge structure.
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| CN202110126474.0A CN113183496A (en) | 2021-01-29 | 2021-01-29 | Three-dimensional braided composite material marine catheter and preparation method thereof |
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| CN202110126474.0A CN113183496A (en) | 2021-01-29 | 2021-01-29 | Three-dimensional braided composite material marine catheter and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4832633A (en) * | 1977-11-30 | 1989-05-23 | Hydronic, Ltd. | Marine propulsion system |
| US20120148424A1 (en) * | 2010-08-10 | 2012-06-14 | Rolls-Royce Plc | Rim drive electrical machine |
| CN107662693A (en) * | 2017-09-06 | 2018-02-06 | 哈尔滨工程大学 | A kind of PODDED PROPULSOR with conduit |
| WO2020169266A1 (en) * | 2019-02-21 | 2020-08-27 | Bayerische Motoren Werke Aktiengesellschaft | Tubular, triaxially braided fiber preform having additional, locally limited fiber layers |
-
2021
- 2021-01-29 CN CN202110126474.0A patent/CN113183496A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4832633A (en) * | 1977-11-30 | 1989-05-23 | Hydronic, Ltd. | Marine propulsion system |
| US20120148424A1 (en) * | 2010-08-10 | 2012-06-14 | Rolls-Royce Plc | Rim drive electrical machine |
| CN107662693A (en) * | 2017-09-06 | 2018-02-06 | 哈尔滨工程大学 | A kind of PODDED PROPULSOR with conduit |
| WO2020169266A1 (en) * | 2019-02-21 | 2020-08-27 | Bayerische Motoren Werke Aktiengesellschaft | Tubular, triaxially braided fiber preform having additional, locally limited fiber layers |
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