CN113416385A - Sports flying disc made of composite material and preparation method thereof - Google Patents
Sports flying disc made of composite material and preparation method thereof Download PDFInfo
- Publication number
- CN113416385A CN113416385A CN202110834875.1A CN202110834875A CN113416385A CN 113416385 A CN113416385 A CN 113416385A CN 202110834875 A CN202110834875 A CN 202110834875A CN 113416385 A CN113416385 A CN 113416385A
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- Prior art keywords
- flying disc
- polymethyl methacrylate
- composite material
- chopped carbon
- disc made
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- Pending
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- 239000002131 composite material Substances 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 57
- 239000004917 carbon fiber Substances 0.000 claims abstract description 57
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 37
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims abstract description 37
- 239000004926 polymethyl methacrylate Substances 0.000 claims abstract description 37
- 239000003822 epoxy resin Substances 0.000 claims abstract description 31
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 31
- 239000000843 powder Substances 0.000 claims abstract description 28
- 239000002994 raw material Substances 0.000 claims abstract description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 25
- 238000010438 heat treatment Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 10
- 238000010008 shearing Methods 0.000 claims description 9
- 239000011268 mixed slurry Substances 0.000 claims description 7
- 229910000838 Al alloy Inorganic materials 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000012188 paraffin wax Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000004381 surface treatment Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 4
- 238000005452 bending Methods 0.000 abstract description 2
- 239000004743 Polypropylene Substances 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63H—TOYS, e.g. TOPS, DOLLS, HOOPS OR BUILDING BLOCKS
- A63H33/00—Other toys
- A63H33/18—Throwing or slinging toys, e.g. flying disc toys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/06—Fibrous reinforcements only
- B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
- B29C70/12—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of short length, e.g. in the form of a mat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/44—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
- B29C70/443—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding and impregnating by vacuum or injection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2201/00—Use of cellulose, modified cellulose or cellulose derivatives, e.g. viscose, as reinforcement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2233/00—Use of polymers of unsaturated acids or derivatives thereof, as reinforcement
- B29K2233/04—Polymers of esters
- B29K2233/12—Polymers of methacrylic acid esters, e.g. PMMA, i.e. polymethylmethacrylate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2263/00—Use of EP, i.e. epoxy resins or derivatives thereof as reinforcement
-
- 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
- B29L2031/52—Sports equipment ; Games; Articles for amusement; Toys
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/004—Additives being defined by their length
Abstract
The invention relates to a sports flying disc made of composite materials and a preparation method thereof, wherein the raw materials for preparing the sports flying disc comprise, by weight, 10-25 parts of chopped carbon fibers, 1-7 parts of polymethyl methacrylate powder, 10-70 parts of epoxy resin and 10-50 parts of curing agent. The sports flying disc has the advantages of high and low temperature resistance, difficult fracture and strong bending resistance.
Description
Technical Field
The invention relates to leisure and entertainment equipment, in particular to a sports flying disc made of composite materials and a preparation method thereof.
Background
The flying disc sport is a simple outdoor sport item which is suitable for both the old and the young; in the flying disc movement, the material of the moving flying disc is a key factor influencing the flying disc movement effect; at present, most of sports flying discs at home and abroad are made of polypropylene (PP) materials, although the sports flying discs made of the PP materials have the advantages of light weight, good toughness and good chemical resistance, the sports flying discs have the defects of poor low-temperature resistance and the like, when the environmental temperature is low, the impact resistance of the sports flying discs is reduced, and particularly in autumn and winter in the north, the existing sports flying discs often cause crack damage to disc bodies and even integral fracture due to low temperature.
Accordingly, further improvements to existing sports flying discs are needed.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a sports flying disc made of composite materials and a preparation method thereof.
The purpose of the invention is realized as follows:
a sports flying disc made of composite materials is prepared from 10-25 parts by weight of chopped carbon fibers, 1-7 parts by weight of polymethyl methacrylate powder, 10-70 parts by weight of epoxy resin and 10-50 parts by weight of curing agent.
The mass ratio of the chopped carbon fibers to the polymethyl methacrylate to the epoxy resin to the curing agent is 20: 1: 40: 20, or 15: 5: 32: 13, or 25: 1: 45: 30, or 20: 1: 10: 10, or 20: 1: 70: 50.
the length of the chopped carbon fiber is 1.0-12.0 mm.
The particle diameter of the polymethyl methacrylate powder is 5-10 μm.
The mass ratio of the polymethyl methacrylate powder to the chopped carbon fibers is (1: 3-1): 25.
a method for preparing a sports flying disc made of composite material comprises the following steps,
s1, shearing the unidirectional carbon fiber tows: shearing the unidirectional carbon fiber tows to the required length through shearing equipment to prepare chopped carbon fibers for later use;
s2, adding polymethyl methacrylate powder: adding polymethyl methacrylate powder into the chopped carbon fiber prepared in the step S1 according to a proper mass ratio to prepare a mixed material of the chopped carbon fiber and the polymethyl methacrylate powder;
s3, adding an epoxy resin adhesive and a curing agent: mixing epoxy resin glue and a curing agent according to a proper mass ratio, adding the mixture into S2 to obtain a mixed material, and fully stirring to obtain carbon fiber mixed slurry;
s4, feeding to a forming die: coating a release agent on the forming die, and putting the carbon fiber mixed slurry prepared in the step S3 into the forming die;
s5, filling into a vacuum bag: placing the forming mould into a vacuum bag for vacuum pumping treatment;
s6, heating and curing: curing and heating are carried out while the vacuum bag is vacuumized, the heating temperature is 100-120 ℃, and the heating time is 6-10 hours;
s7, demolding treatment: and (4) demolding the semi-finished moving flying disc prepared in the step (S6), and performing surface treatment to prepare the moving flying disc.
In S3, the mass ratio of the mixed liquid of the epoxy resin and the curing agent to the chopped carbon fibers is 1: 1-6: 1.
in S4, the release agent is an organic paraffin-based release agent.
In S5, the vacuum pump for vacuum pumping is a mechanical pump, and the vacuum pumping degree is greater than or equal to 10 Pa.
The forming die is a stainless steel die or an aluminum alloy die, wherein the melting point of the aluminum alloy die is not lower than 600 ℃.
The invention has the following beneficial effects:
the moving flying disc is made of main body materials such as chopped carbon fibers, polymethyl methacrylate (PMMA) powder, epoxy resin and the like; the chopped carbon fibers and the epoxy resin can enable the motion frisbee to have the advantages of high and low temperature resistance, strong impact resistance, corrosion resistance, difficult fracture and the like; and the density of the flying disc can be adjusted by adjusting the proportion of the chopped carbon fibers, the epoxy resin and the curing agent according to actual needs, so that a proper density range is obtained. In addition, the prepared sports flying disc has the advantages of good elasticity, strong bending resistance and the like by doping polymethyl methacrylate (PMMA) powder in a certain proportion in the chopped carbon fibers, so that the elasticity of the sports flying disc can be increased, and the hand feeling of the sports flying disc in motion is improved.
Detailed Description
The present invention will be further described with reference to the following examples.
The invention relates to a sports flying disc, which comprises the following raw materials, by weight, 10-25 parts of chopped carbon fibers, 1-7 parts of polymethyl methacrylate powder, 10-70 parts of epoxy resin and 10-50 parts of a curing agent.
First embodiment
In the sports flying disc according to this embodiment, the mass ratio of the chopped carbon fibers, the polymethyl methacrylate, the epoxy resin, and the curing agent is 20: 1: 40: 20, namely 20 parts of chopped carbon fibers, 1 part of polymethyl methacrylate powder, 40 parts of epoxy resin and 20 parts of curing agent.
Further, the chopped carbon fibers have a length of 1.0 to 12.0 mm.
Further, the particle diameter of the polymethyl methacrylate powder is 5 μm to 10 μm.
Further, the mass ratio of the polymethyl methacrylate powder to the chopped carbon fibers was 1: 20.
The preparation method of the sports flying disc related to the embodiment comprises the following steps,
s1, shearing the unidirectional carbon fiber tows: shearing the unidirectional carbon fiber tows to the required length through shearing equipment to prepare chopped carbon fibers for later use;
s2, adding polymethyl methacrylate powder: adding polymethyl methacrylate powder into the chopped carbon fiber prepared in the step S1 according to a proper mass ratio to prepare a mixed material of the chopped carbon fiber and the polymethyl methacrylate powder;
s3, adding an epoxy resin adhesive and a curing agent: mixing epoxy resin glue and a curing agent according to a proper mass ratio, adding the mixture into S2 to obtain a mixed material, and fully stirring to obtain carbon fiber mixed slurry;
s4, feeding to a forming die: coating a layer of release agent on the inner surface of a forming die, and putting the carbon fiber mixed slurry prepared in the step S3 into the forming die;
s5, filling into a vacuum bag: putting the forming mould into a vacuum bag, then inserting the vacuum bag, sealing the vacuum bag with vacuum mud, and then vacuumizing;
s6, heating and curing: curing and heating are carried out while the vacuum bag is vacuumized through a vacuum tube connected with a vacuum pump, the heating temperature is 100-120 ℃, the heating time is 6-10 hours, and curing and heating are carried out until the chopped carbon fibers on the surface of the carbon fiber mixed slurry are completely cured, so as to prepare a semi-finished product of the flying disc;
s7, demolding treatment: and (5) demolding the semi-finished moving flying disc prepared in the step (S6), carrying out surface treatment such as grinding and polishing on the surface of the semi-finished moving flying disc, and finally smearing a layer of carbon fiber surface adhesive on the surface to prepare the moving flying disc.
Further, in S3, the mass ratio of the mixed liquid of the epoxy resin and the curing agent to the chopped carbon fibers is 1: 1-6: 1, the ratio of 3:1 is preferred in the present embodiment.
Further, in S4, the release agent is an organic paraffin-based release agent.
Further, in S5, the vacuum pump for evacuation is a mechanical pump, and the degree of evacuation is greater than or equal to 10 Pa.
Further, the forming die is an aluminum alloy die (or a stainless steel die), and the melting point of the aluminum alloy die is not lower than 600 ℃.
Second embodiment
In the sports flying disc according to this embodiment, the mass ratio of the chopped carbon fibers, the polymethyl methacrylate, the epoxy resin, and the curing agent is 15: 5: 32: 13, namely 15 parts of chopped carbon fiber, 5 parts of polymethyl methacrylate powder, 40 parts of epoxy resin and 20 parts of curing agent. Wherein the mass ratio of the polymethyl methacrylate powder to the chopped carbon fibers is 1: 3.
Other parts not described above are the same as those of the first embodiment, and are not explained in detail here.
Third embodiment
In the sports flying disc according to this embodiment, the mass ratio of the chopped carbon fibers, the polymethyl methacrylate, the epoxy resin, and the curing agent is 25: 1: 45: 30, namely 15 parts of chopped carbon fibers, 5 parts of polymethyl methacrylate powder, 40 parts of epoxy resin and 20 parts of curing agent. Wherein the mass ratio of the polymethyl methacrylate powder to the chopped carbon fibers is 1: 25.
Other parts not described above are the same as those of the first embodiment, and are not explained in detail here.
Fourth embodiment
In the sports flying disc according to this embodiment, the mass ratio of the chopped carbon fibers, the polymethyl methacrylate, the epoxy resin, and the curing agent is 20: 1: 10: the epoxy resin composition comprises, by weight, 15 parts of chopped carbon fibers, 5 parts of polymethyl methacrylate powder, 40 parts of epoxy resin and 20 parts of a curing agent. Wherein the mass ratio of the mixed liquid of the epoxy resin and the curing agent to the short carbon fiber is 1: 1.
other parts not described above are the same as those of the first embodiment, and are not explained in detail here.
Fifth embodiment
In the sports flying disc according to this embodiment, the mass ratio of the chopped carbon fibers, the polymethyl methacrylate, the epoxy resin, and the curing agent is 20: 1: 70: 50, namely 15 parts of chopped carbon fiber, 5 parts of polymethyl methacrylate powder, 40 parts of epoxy resin and 20 parts of curing agent. Wherein the mass ratio of the mixed liquid of the epoxy resin and the curing agent to the chopped carbon fibers is 6: 1.
other parts not described above are the same as those of the first embodiment, and are not explained in detail here.
The foregoing is a preferred embodiment of the present invention, and the basic principles, principal features and advantages of the invention are shown and described. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and the invention is intended to be protected by the following claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A sports flying disc made of composite material, characterized by: the preparation raw materials comprise, by weight, 10-25 parts of chopped carbon fibers, 1-7 parts of polymethyl methacrylate powder, 10-70 parts of epoxy resin and 10-50 parts of a curing agent.
2. The flying disc made of composite material according to claim 1, wherein: the mass ratio of the chopped carbon fibers to the polymethyl methacrylate to the epoxy resin to the curing agent is 20: 1: 40: 20, or 15: 5: 32: 13, or 25: 1: 45: 30, or 20: 1: 10: 10, or 20: 1: 70: 50.
3. the flying disc made of composite material according to claim 1, wherein: the length of the chopped carbon fiber is 1.0-12.0 mm.
4. The flying disc made of composite material according to claim 1, wherein: the particle diameter of the polymethyl methacrylate powder is 5-10 μm.
5. The flying disc made of composite material according to claim 1, wherein: the mass ratio of the polymethyl methacrylate powder to the chopped carbon fibers is (1: 3-1): 25.
6. a method for preparing a sports flying disc made of composite materials is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
s1, shearing the unidirectional carbon fiber tows: shearing the unidirectional carbon fiber tows to the required length through shearing equipment to prepare chopped carbon fibers for later use;
s2, adding polymethyl methacrylate powder: adding polymethyl methacrylate powder into the chopped carbon fiber prepared in the step S1 according to a proper mass ratio to prepare a mixed material of the chopped carbon fiber and the polymethyl methacrylate powder;
s3, adding an epoxy resin adhesive and a curing agent: mixing epoxy resin glue and a curing agent according to a proper mass ratio, adding the mixture into S2 to obtain a mixed material, and fully stirring to obtain carbon fiber mixed slurry;
s4, feeding to a forming die: coating a release agent on the forming die, and putting the carbon fiber mixed slurry prepared in the step S3 into the forming die;
s5, filling into a vacuum bag: placing the forming mould into a vacuum bag for vacuum pumping treatment;
s6, heating and curing: curing and heating are carried out while the vacuum bag is vacuumized, the heating temperature is 100-120 ℃, and the heating time is 6-10 hours;
s7, demolding treatment: and (4) demolding the semi-finished moving flying disc prepared in the step (S6), and performing surface treatment to prepare the moving flying disc.
7. A method of making a sports flying disc made of composite material as claimed in claim 6, wherein: in S3, the mass ratio of the mixed liquid of the epoxy resin and the curing agent to the chopped carbon fibers is 1: 1-6: 1.
8. a method of making a sports flying disc made of composite material as claimed in claim 6, wherein: in S4, the release agent is an organic paraffin-based release agent.
9. A method of making a sports flying disc made of composite material as claimed in claim 6, wherein: in S5, the vacuum pump for vacuum pumping is a mechanical pump, and the vacuum pumping degree is greater than or equal to 10 Pa.
10. A method of making a sports flying disc made of composite material as claimed in claim 6, wherein: the forming die is a stainless steel die or an aluminum alloy die, wherein the melting point of the aluminum alloy die is not lower than 600 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110834875.1A CN113416385A (en) | 2021-07-23 | 2021-07-23 | Sports flying disc made of composite material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110834875.1A CN113416385A (en) | 2021-07-23 | 2021-07-23 | Sports flying disc made of composite material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113416385A true CN113416385A (en) | 2021-09-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110834875.1A Pending CN113416385A (en) | 2021-07-23 | 2021-07-23 | Sports flying disc made of composite material and preparation method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN113416385A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111361180A (en) * | 2020-02-14 | 2020-07-03 | 大连交通大学 | Carbon fiber fine structure component and preparation method thereof |
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2021
- 2021-07-23 CN CN202110834875.1A patent/CN113416385A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111361180A (en) * | 2020-02-14 | 2020-07-03 | 大连交通大学 | Carbon fiber fine structure component and preparation method thereof |
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Application publication date: 20210921 |
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