CN212555668U - Three-dimensional braided thermoplastic composite material automobile rim - Google Patents
Three-dimensional braided thermoplastic composite material automobile rim Download PDFInfo
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- CN212555668U CN212555668U CN202020844622.3U CN202020844622U CN212555668U CN 212555668 U CN212555668 U CN 212555668U CN 202020844622 U CN202020844622 U CN 202020844622U CN 212555668 U CN212555668 U CN 212555668U
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Abstract
The utility model relates to a three-dimensional thermoplastic composite automobile wheel rim of weaving belongs to thermoplastic composite automobile structure part field, and this automobile wheel rim includes that the triplex constitutes: the wheel comprises a three-dimensional hybrid fiber woven automobile hub, a one-way/three-dimensional hybrid woven composite material structured spoke and a winding/three-dimensional hybrid woven composite material structured rim. The three-dimensional hybrid fiber braided hub is reinforced by adopting a multi-dimensional braided structure of hybrid fibers; the spoke with the unidirectional/three-dimensional hybrid braided composite material structure is characterized in that the core part of the spoke is prepared by adopting a unidirectional fiber thermosetting resin pultrusion framework, and the exterior of the spoke is reinforced by utilizing a three-dimensional hybrid fiber braided structure; the core of the rim with the winding/three-dimensional hybrid braided composite material structure is formed by winding unidirectional fiber thermosetting resin to form a framework, and the exterior is reinforced by a three-dimensional braided structure. Finally, after the fabric structure is integrally formed, the fabric structure is integrally formed through thermoplastic resin high-temperature high-pressure injection molding or vacuum infusion and integral molding by adopting specific low-viscosity thermoplastic resin.
Description
Technical Field
The utility model belongs to a thermoplastic composite automobile structure part, in particular to three-dimensional combined material automobile wheel rim structure who weaves the thermoplastic resin base member of reinforcing structure.
Background
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be taken as an acknowledgement or any form of suggestion that this information constitutes prior art that is already known to a person skilled in the art.
The conventional automobile rim is basically made of metal materials, mainly made of light aluminum alloy materials, and only in part of high-performance automobiles and sports racing cars, the rim made of carbon fiber composite materials is adopted to meet the requirements of light weight and speed. With the continuous development of automobile accessory technology, higher research requirements are put forward on the light weight and speed improvement of automobiles, so that the preparation of automobile rims by using carbon fiber reinforced composite materials becomes a hot spot of the current automobile part research. Although the density of the existing light aluminum alloy is lower than that of the existing steel alloy, the requirement for the lightweight of an automobile cannot be met, and the problem of weak interlayer strength cannot be fundamentally solved when the two-dimensional composite thermosetting resin composite material is used as an automobile rim material, and the large-scale production cannot be met in the aspect of processing efficiency. However, the utility model people find: the composite material automobile rim part prepared by adopting an injection molding or mould pressing process for the chopped fibers has a complex manufacturing process, and the connectivity, the overall strength stability and the service life of the rim can not meet the reliable requirements under the conditions of large load and complex working conditions.
Disclosure of Invention
In order to overcome the above problems, the present invention provides a structure for manufacturing a three-dimensional braided thermoplastic composite automobile rim, which comprises three parts: the wheel comprises a three-dimensional hybrid fiber woven automobile hub, a one-way/three-dimensional hybrid woven composite material structured spoke and a winding/three-dimensional hybrid woven composite material structured rim. The three-dimensional hybrid fiber braided hub is reinforced by adopting a multi-dimensional braided structure of hybrid fibers; the spoke with the unidirectional/three-dimensional hybrid braided composite material structure is characterized in that the core part of the spoke is prepared by adopting a unidirectional fiber thermosetting resin pultrusion framework, and the exterior of the spoke is reinforced by utilizing a three-dimensional hybrid fiber braided structure; the core of the rim with the winding/three-dimensional hybrid braided composite material structure is formed by winding unidirectional fiber thermosetting resin to form a framework, and the exterior is reinforced by a three-dimensional braided structure. Finally, after the fabric structure is integrally formed, the fabric structure is integrally formed through thermoplastic resin high-temperature high-pressure injection molding or vacuum infusion and integral molding by adopting specific low-viscosity thermoplastic resin.
In order to realize the technical purpose, the utility model discloses a technical scheme as follows:
the utility model discloses a first aspect provides a three-dimensional thermoplastic composite automobile rim of weaving, include: the wheel hub is woven by three-dimensional hybrid fibers, the spoke with a one-way/three-dimensional hybrid woven composite structure and the rim with a winding/three-dimensional hybrid woven composite structure;
the core part of the spoke with the unidirectional/three-dimensional hybrid braided composite material structure is prepared by adopting a unidirectional fiber thermosetting resin pultrusion framework, and the exterior part of the spoke is reinforced by a three-dimensional hybrid fiber braided structure;
the core of the rim with the winding/three-dimensional hybrid braided composite material structure is formed by winding unidirectional fiber thermosetting resin to form a framework, and the exterior is reinforced by a three-dimensional braided structure.
The three-dimensional weaving technology is a three-dimensional weaving technology for increasing penetrating fibers in the thickness direction by adopting high-performance fibers, continuous fiber filaments with the thickness are introduced by weaving the fibers in a multi-dimensional space, the strength performance of a composite material reinforced fabric in the Z-axis direction is greatly improved by the high strength characteristic of the fibers in the axial direction, and the composite material formed by the technology has the characteristics of an overall isotropic mechanical structure. While thermoplastic resins have the processability flexibility of repeated molding that thermosetting resins do not have.
The second aspect of the present invention provides a method for manufacturing a three-dimensional knitted thermoplastic composite automotive rim, comprising:
integrally weaving and forming a three-dimensional fabric structure of a three-dimensional hybrid fiber woven automobile hub, a unidirectional/three-dimensional hybrid woven composite material structured spoke and a winding/three-dimensional hybrid woven composite material structured rim;
the thermoplastic resin is molded by high-temperature and high-pressure injection molding or vacuum infusion of a specific low-viscosity thermoplastic resin system.
In a third aspect of the present invention, there is provided a use of any one of the above three-dimensionally woven thermoplastic composite automotive rims in automotive manufacturing.
The beneficial effects of the utility model reside in that:
(1) the utility model discloses the combined material automobile wheel rim part of preparation, under great load and complicated operating mode condition, the connectivity, the bulk strength stability and the life of wheel rim all reach reliable requirement.
(2) The preparation method is simple, low in cost, high in practicability and easy for large-scale production.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic structural diagram of a three-dimensional braided thermoplastic composite material automobile rim, which comprises three parts of a three-dimensional hybrid fiber braided automobile hub 1, a one-way/three-dimensional hybrid braided composite material structural spoke 2 and a winding/three-dimensional hybrid braided composite material structural rim 3, wherein a core part of the one-way/three-dimensional hybrid braided composite material structural spoke 2 is prepared by adopting a one-way fiber thermosetting resin pultrusion framework 4, and the outside of the one-way/three-dimensional hybrid braided composite material structural spoke is reinforced by a three-dimensional hybrid fiber braided structure; the core of the rim 3 with the winding/three-dimensional hybrid braided composite material structure is formed by winding unidirectional fiber thermosetting resin to form a framework 6, and the exterior is reinforced by a three-dimensional braided structure 7.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Interpretation of terms
UHMWPE fibers refer to ultra high molecular weight polyethylene fibers.
A three-dimensional knit thermoplastic composite automotive rim fabrication structure, the automotive rim comprising three parts: the wheel comprises a three-dimensional hybrid fiber woven automobile hub, a one-way/three-dimensional hybrid woven composite material structured spoke and a winding/three-dimensional hybrid woven composite material structured rim. The three-dimensional hybrid fiber braided hub is reinforced by adopting a multi-dimensional braided structure of hybrid fibers; the spoke with the unidirectional/three-dimensional hybrid braided composite material structure is characterized in that the core part of the spoke is prepared by adopting a unidirectional fiber thermosetting resin pultrusion framework, and the exterior of the spoke is reinforced by utilizing a three-dimensional hybrid fiber braided structure; the core of the rim with the winding/three-dimensional hybrid braided composite material structure is formed by winding unidirectional fiber thermosetting resin to form a framework, and the exterior is reinforced by a three-dimensional braided structure. Finally, after the fabric structure is integrally formed, the fabric structure is integrally formed through thermoplastic resin high-temperature high-pressure injection molding or vacuum infusion and integral molding by adopting specific low-viscosity thermoplastic resin.
The three-dimensional hybrid fiber woven automobile hub can be formed by adopting various weaving technologies such as three-dimensional four-direction, three-dimensional five-direction, three-dimensional six-direction and three-dimensional seven-direction weaving, the reinforcing fiber tows are subjected to hybrid weaving by adopting any one or more of carbon fiber, glass fiber, basalt fiber, aramid fiber and UHMWPE fiber, and the proportion of hybrid fiber is flexibly adjusted according to design requirements.
The core part of the spoke with the unidirectional/three-dimensional hybrid braided composite material structure is prepared by adopting a unidirectional fiber thermosetting resin pultrusion framework, unidirectional reinforcing fibers of the framework material adopt any one of carbon fibers, basalt fibers, aramid fibers, glass fibers and the like, a resin matrix adopts any one of unsaturated polyester resin, epoxy resin, phenolic resin, vinyl ester resin and the like, and the resin content is controlled within the range of 40-60%.
The one-way/three-dimensional hybrid braided composite material structure spoke is reinforced by a three-dimensional hybrid fiber braided structure on the outside on the basis of the formation of a core skeleton, the three-dimensional braiding can be formed by multiple braiding technologies such as three-dimensional four-way, three-dimensional five-way, three-dimensional six-way and three-dimensional seven-way, the reinforcing fiber tows are braided in a hybrid manner by adopting any one or more of carbon fibers, glass fibers, basalt fibers, aramid fibers and UHMWPE fibers, and the proportion of the hybrid fibers is flexibly adjusted according to design requirements.
The core part of the rim with the winding/three-dimensional hybrid braided composite material structure is formed by winding and molding unidirectional fiber thermosetting resin to form a framework, unidirectional winding reinforcing fibers of the framework material are any one of carbon fibers, basalt fibers, aramid fibers, glass fibers and the like, a resin matrix of the framework material is any one of unsaturated polyester resin, epoxy resin, phenolic resin, vinyl ester resin and the like, and the resin content is controlled within the range of 40-60%.
The core part winding forming framework of the winding/three-dimensional hybrid braided composite material structure wheel rim can select any one of forming modes of dry method prepreg tape forming and wet method prepreg forming, the winding mode can select any one of winding modes of hoop winding, spiral winding, longitudinal winding and the like, wherein the winding angle of the hoop winding is controlled within the range of 85-90 degrees, the winding angle of the spiral winding is controlled within the range of 45-70 degrees, and the winding angle of the longitudinal winding is not more than 25 degrees.
The exterior of a core winding forming framework of the rim with the winding/three-dimensional hybrid braided composite material structure is reinforced by a three-dimensional braided structure, the three-dimensional braided structure can be formed by various braiding technologies such as three-dimensional four-direction, three-dimensional five-direction, three-dimensional six-direction and three-dimensional seven-direction, reinforcing fiber tows are subjected to hybrid braiding by adopting any one or more of carbon fibers, glass fibers, basalt fibers, aramid fibers and UHMWPE fibers, and the proportion of the hybrid fibers is flexibly adjusted according to design requirements.
After the three-dimensional fabric structures of the three-dimensional hybrid fiber woven automobile hub, the unidirectional/three-dimensional hybrid woven composite material structure spoke and the winding/three-dimensional hybrid woven composite material structure rim are integrally woven and molded, through the high-temperature high-pressure injection molding of thermoplastic resin or the vacuum infusion integral molding of a specific low-viscosity thermoplastic resin system, the thermoplastic resin can be any one of polypropylene (PP), polybutylene terephthalate (PBT), Polyamide (PA), polyphenylene sulfide (PPS), Polyetherimide (PEI), polyether ketone (PEKK), polyether ether ketone (PEEK) and annular polybutylene terephthalate (CBT), the molding mode and specific molding parameters of the resin are flexibly adjusted according to design requirements, and the content of the final thermoplastic resin matrix is controlled within the range of 40-60%.
The present invention is described in further detail below with reference to specific examples, which are intended to be illustrative of the invention and not limiting.
Example 1
A preparation structure of a three-dimensional knitted thermoplastic composite material automobile rim is specifically prepared in the following manner:
firstly, a hybrid fiber three-dimensional reinforced fabric structure of carbon fibers and glass fibers in a three-dimensional four-way weaving mode is adopted to form the hybrid fiber woven automobile hub 1, wherein the mixing ratio of the two fibers is controlled to be 1: 1. Preparing a one-way/three-dimensional hybrid braided composite material structure spoke 2 between a hub 1 and a rim 3, wherein the core part of the spoke 2 adopts unsaturated polyester resin with the content of 40% as a matrix, the one-way carbon fiber reinforced composite material as a framework 4, and the exterior of the framework 4 adopts a three-dimensional four-way braided hybrid fiber three-dimensional reinforced fabric structure of carbon fiber and glass fiber to form an exterior reinforced structure 5, wherein the hybrid ratio of the two fibers is controlled to be 1: 1. The composite material wheel rim 3 adopts a winding/three-dimensional hybrid woven composite material structure, the core part of the composite material wheel rim adopts unsaturated polyester resin with the content of 45 percent as a matrix, and the composite material reinforced by winding glass fiber as a framework 6, wherein the preparation of the winding structure of the framework 6 adopts a wet impregnation molding mode, the hoop winding molding is adopted, and the winding angle is controlled at 85 degrees. The outer layer of the core framework of the composite material wheel rim 3 adopts a three-dimensional seven-direction weaving mode of a hybrid fiber three-dimensional reinforced fabric structure of carbon fiber and basalt fiber to form an external reinforced structure 7, wherein the hybrid ratio of the two fibers is controlled to be 1: 1. Finally, after the fabric structure is integrally formed, polypropylene (PP) with the content of 60% is used for injection molding at high temperature and high pressure.
Example 2
A preparation structure of a three-dimensional knitted thermoplastic composite material automobile rim is specifically prepared in the following manner:
firstly, a hybrid fiber three-dimensional reinforced fabric structure of aramid fiber and carbon fiber in a three-dimensional seven-direction weaving mode is adopted to form a hybrid fiber woven automobile hub 1, wherein the mixing ratio of the two fibers is controlled to be 2: 1. A one-way/three-dimensional hybrid braided composite material structure spoke 2 is prepared between a hub 1 and a rim 3, a vinyl ester resin with the content of 60% is adopted as a matrix in the core of the spoke 2, a one-way carbon fiber reinforced composite material is adopted as a framework 4, a three-dimensional seven-direction braided aramid fiber hybrid fiber three-dimensional reinforced fabric structure is adopted outside the framework 4 to form an external reinforced structure 5, and the hybrid ratio of two fibers is controlled to be 1: 1. The composite material wheel rim 3 adopts a winding/three-dimensional hybrid braided composite material structure, the core part of the composite material wheel rim adopts 40 percent of epoxy resin as a matrix and a composite material reinforced by winding carbon fibers as a framework 6, wherein the preparation of the winding structure of the framework 6 adopts a wet impregnation molding mode and a spiral winding molding mode, and the winding angle is controlled at 45 degrees. The outer layer of the core framework of the composite material wheel rim 3 adopts a three-dimensional six-direction weaving mode mixed fiber three-dimensional reinforced fabric structure of glass fiber and carbon fiber to form an external reinforced structure 7, wherein the mixing ratio of the two fibers is controlled to be 4: 1. Finally, after the fabric structure is integrally formed, the fabric structure is subjected to high-temperature high-pressure injection molding by polybutylene terephthalate (PBT) resin with the content of 40%.
Example 3
A preparation structure of a three-dimensional knitted thermoplastic composite material automobile rim is specifically prepared in the following manner:
firstly, a hybrid fiber three-dimensional reinforced fabric structure of basalt fibers and carbon fibers in a three-dimensional six-direction weaving mode is adopted to form the hybrid fiber woven automobile hub 1, wherein the mixing ratio of the two fibers is controlled to be 1: 4. Preparing a one-way/three-dimensional hybrid braided composite material structure spoke 2 between a hub 1 and a rim 3, wherein the core part of the spoke 2 adopts 40 percent of epoxy resin as a matrix, the one-way glass fiber reinforced composite material as a framework 4, and the exterior of the framework adopts a hybrid fiber three-dimensional reinforced fabric structure of carbon fiber and UHMWPE fiber in a three-dimensional five-way braiding mode to form an exterior reinforced structure 5, wherein the hybrid ratio of the two fibers is controlled at 3: 1. The composite material wheel rim 3 adopts a winding/three-dimensional hybrid woven composite material structure, the core part of the composite material wheel rim adopts phenolic resin with the content of 50 percent as a matrix, and the winding carbon fiber reinforced composite material as a framework 6, wherein the preparation of the winding structure of the framework 6 adopts a wet impregnation forming mode and a longitudinal winding mode, and the winding angle is 15 degrees. The outer layer of the core framework of the composite material wheel rim 3 adopts a three-dimensional six-direction weaving mode glass fiber and carbon fiber mixed three-dimensional reinforced fabric structure to form an external reinforced structure 7, wherein the mixing ratio of two fibers is controlled to be 1.5: 1. Finally, after the fabric structure is integrally formed, the fabric structure is integrally formed by vacuum infusion through polyphenylene sulfide (PPS) resin with the content of 55 percent by adopting specific low viscosity.
Example 4
A preparation structure of a three-dimensional knitted thermoplastic composite material automobile rim is specifically prepared in the following manner:
firstly, a hybrid fiber three-dimensional reinforced fabric structure of carbon fibers and aramid fibers in a three-dimensional seven-direction weaving mode is adopted to form the hybrid fiber woven automobile hub 1, wherein the mixing ratio of the two fibers is controlled to be 6: 1. A one-way/three-dimensional hybrid braided composite material structure spoke 2 is prepared between a hub 1 and a rim 3, a vinyl ester resin with the content of 45% is adopted as a matrix in the core part of the spoke 2, a one-way glass fiber reinforced composite material is adopted as a framework 4, a hybrid fiber three-dimensional reinforced fabric structure of carbon fiber and basalt fiber in a three-dimensional six-direction braiding mode is adopted outside the framework to form an external reinforced structure 5, and the mixing ratio of the two fibers is controlled to be 3: 2. The composite material wheel rim 3 adopts a winding/three-dimensional hybrid woven composite material structure, the core part of the composite material wheel rim adopts epoxy resin with the content of 52 percent as a matrix and composite material reinforced by winding carbon fiber as a framework 6, wherein the preparation of the winding structure of the framework 6 adopts a wet impregnation molding mode and selects a hoop winding molding mode, and the winding angle is controlled at 87 degrees. The outer layer of the core framework of the composite material wheel rim 3 adopts a three-dimensional four-way weaving mode of a hybrid fiber three-dimensional reinforcing fabric structure of carbon fiber and glass fiber to form an external reinforcing structure 7, wherein the hybrid ratio of the two fibers is controlled to be 5: 1. Finally, after the fabric structure is integrally molded, the fabric structure is subjected to high-temperature high-pressure injection molding by polyether ketone (PEKK) resin with the content of 60%.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that the technical solutions described in the foregoing embodiments can be modified or partially replaced by equivalent solutions. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.
Claims (10)
1. A three-dimensional knit thermoplastic composite automotive rim, comprising: the wheel hub is woven by three-dimensional hybrid fibers, the spoke with a one-way/three-dimensional hybrid woven composite structure and the rim with a winding/three-dimensional hybrid woven composite structure;
the core part of the spoke with the unidirectional/three-dimensional hybrid braided composite material structure is prepared by adopting a unidirectional fiber thermosetting resin pultrusion framework, and the exterior part of the spoke is reinforced by a three-dimensional hybrid fiber braided structure;
the core of the rim with the winding/three-dimensional hybrid braided composite material structure is formed by winding unidirectional fiber thermosetting resin to form a framework, and the exterior is reinforced by a three-dimensional braided structure.
2. A three-dimensional braided thermoplastic composite automotive rim according to claim 1, wherein said three-dimensional hybrid fiber braided automotive hub is formed into a reinforcing textile structure using three-dimensional four-way, three-dimensional five-way, three-dimensional six-way, or three-dimensional seven-way braiding techniques.
3. The three-dimensional braided thermoplastic composite automotive rim of claim 1, wherein the reinforcing fiber strands are hybrid braided using any one or more of carbon fibers, glass fibers, basalt fibers, aramid fibers, UHMWPE fibers.
4. A three-dimensional woven thermoplastic composite automotive rim according to claim 1, wherein said one-way/three-dimensional hybrid woven composite structural spoke core is made of a one-way fiber thermosetting resin pultrusion skeleton, the one-way reinforcing fiber of the skeleton material is made of any one of carbon fiber, basalt fiber, aramid fiber and glass fiber, the resin matrix is made of any one of unsaturated polyester resin, epoxy resin, phenolic resin and vinyl ester resin, and the resin content is controlled within the range of 40-60%.
5. A three-dimensional braided thermoplastic composite automotive rim according to claim 1, wherein said one-way/three-dimensional hybrid braided composite structural spoke is externally reinforced with a three-dimensional hybrid fiber braided structure formed by a three-dimensional four-way, three-dimensional five-way, three-dimensional six-way, or three-dimensional seven-way braiding technique, and the reinforcing fiber bundle is hybrid braided with any one or more of carbon fiber, glass fiber, basalt fiber, aramid fiber, and UHMWPE fiber.
6. The three-dimensional braided thermoplastic composite automotive rim of claim 1, wherein said core portion of said rim of said wound/three-dimensional hybrid braided composite structure is formed by winding unidirectional fiber thermosetting resin to form a skeleton, said unidirectional winding reinforcing fiber of said skeleton material is any one of carbon fiber, basalt fiber, aramid fiber and glass fiber, and said resin matrix is any one of unsaturated polyester resin, epoxy resin, phenolic resin and vinyl ester resin, wherein the resin content is controlled within the range of 40-60%.
7. The three-dimensional braided thermoplastic composite automotive rim of claim 1, wherein said core of said rim of said wound/three-dimensional hybrid braided composite structure is wound to form a skeleton by any one of dry prepreg tape forming and wet dip forming, and said winding is selected from any one of hoop winding, spiral winding and longitudinal winding.
8. A three-dimensional braided thermoplastic composite automotive rim according to claim 1, wherein said core of said wound/three-dimensional hybrid braided composite structural rim is reinforced externally of the wound form skeleton by a three-dimensional braided structure.
9. A three-dimensional braided thermoplastic composite automotive rim according to claim 8, wherein said three-dimensional braiding is carried out by a three-dimensional four-way, three-dimensional five-way, three-dimensional six-way, or three-dimensional seven-way braiding technique.
10. The three-dimensional braided thermoplastic composite automotive rim of claim 8, wherein the reinforcing fiber strands are hybrid braided using any one or more of carbon fibers, glass fibers, basalt fibers, aramid fibers, and UHMWPE fibers.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111469601A (en) * | 2020-05-19 | 2020-07-31 | 山东大学 | Three-dimensional woven thermoplastic composite material automobile rim and preparation and application thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111469601A (en) * | 2020-05-19 | 2020-07-31 | 山东大学 | Three-dimensional woven thermoplastic composite material automobile rim and preparation and application thereof |
| CN111469601B (en) * | 2020-05-19 | 2023-09-26 | 山东大学 | Three-dimensional braided thermoplastic composite material automobile rim and preparation and application thereof |
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