Carbon fiber composite material for badminton racket rod and preparation method thereof

Abstract

The invention discloses a carbon fiber composite material for a badminton racket rod and a preparation method of the carbon fiber composite material. The carbon fiber composite material comprises the following raw materials in parts by weight: 55-67 parts of short carbon fibers, 16-23 parts of epoxy resin, 11-17 parts of short aramid fibers, 9-15 parts of alloy powder, 3-7 parts of silicon carbide whiskers and 1-3 parts of a composite antioxidant, the alloy powder comprises, by atomic percent, 20%-26% of Al, 25%-32% of Cu, 35%-40% of Ni and 10%-15% of Mg. The preparation method comprises the following steps: mixing and pressing raw materials, heating, sintering and cooling. The carbon fiber composite material can improve the durability and impact resistance of the badminton racket rod.

Description

Technical Field

[0001] The invention relates to a carbon fiber composite material for a badminton racket shaft and a preparation method thereof, belonging to the technical field of sports equipment. Background Art

[0002] Badminton is a widely used sport suitable for both indoor and outdoor use. With the development of science and technology, badminton rackets are becoming lighter, harder, and more flexible. Carbon fiber is a new type of fiber material with high strength and high modulus. It is lighter than aluminum but stronger than steel, and has the characteristics of corrosion resistance and high modulus. It not only has the inherent intrinsic properties of carbon materials, but also has the softness and processability of textile fibers. It is a new generation of reinforcing fiber.

[0003] Badminton racket shafts made of carbon fiber materials have the advantages of light weight, high strength and stability, good force conversion effect, good shockproof effect and durability, but they may still break in some extreme cases (such as excessive impact or improper use), and extreme environmental conditions of high temperature and high humidity will also affect badminton racket shafts made of carbon fiber materials. Therefore, it is necessary to develop a carbon fiber composite material to improve the durability and impact resistance of badminton racket shafts. Summary of the invention

[0004] In order to solve at least one problem existing in the above-mentioned prior art, the present invention provides a carbon fiber composite material for a badminton racket shaft and a preparation method thereof, wherein the carbon fiber composite material can improve the durability and impact resistance of the badminton racket shaft.

[0005] In order to achieve the above object, the present invention adopts the following technical scheme: a carbon fiber composite material for a badminton racket shaft, comprising the following raw materials and their weight parts: 55-67 parts of chopped carbon fiber, 16-23 parts of epoxy resin, 11-17 parts of chopped aramid fiber, 9-15 parts of alloy powder, 3-7 parts of silicon carbide whiskers and 1-3 parts of composite antioxidant;

[0006] The alloy powder comprises, by atomic percentage, 20-26% Al, 25-32% Cu, 35-40% Ni and 10-15% Mg.

[0007] Preferably, the carbon fiber composite material includes the following raw materials and their weight parts: 62 parts of chopped carbon fibers, 18 parts of epoxy resin, 14 parts of chopped aramid fibers, 11 parts of alloy powder, 4 parts of silicon carbide whiskers and 2 parts of composite antioxidant.

[0008] Preferably, the alloy powder comprises, by atomic percentage, 24% Al, 28% Cu, 37% Ni, and 11% Mg.

[0009] Preferably, the length of the short carbon fibers is 30 to 50 nm.

[0010] Preferably, the length of the chopped aramid fibers is 5 to 15 nm.

[0011] Preferably, the average particle size of the alloy powder is 10-15 μm.

[0012] Preferably, the composite antioxidant consists of antioxidant 1010, ultraviolet absorber UV-571 and boron trioxide.

[0013] Preferably, the composite antioxidant is composed of antioxidant 1010, ultraviolet absorber UV-571, and boron trioxide in a mass ratio of 1:0.5:1.

[0014] Preferably, the alloy powder is prepared by the following method: a metal alloy is melted in a vacuum induction melting furnace to form a metal melt, and the metal melt is kept for 30 minutes for homogenization, and then the homogenized metal melt is atomized in a closed atomization device protected by inert gas to form an alloy powder with a particle size of 10 to 15 μm.

[0015] Preferably, the present invention also provides a method for preparing a carbon fiber composite material, comprising the following steps:

[0016] (1) Mix the raw materials uniformly according to the above weight parts, and gradually increase the pressure from 10 MPa to 435-475 MPa and maintain the pressure for pressing;

[0017] (2) The above step (1) is then pressed and placed in a nitrogen atmosphere at 350°C, and then gradually heated to 1265-1310°C and sintered for 30-40 minutes, then gradually cooled to 520-545°C and maintained for 90-100 minutes, then gradually cooled to 230-250°C and maintained for 30-40 minutes, and then naturally cooled to obtain a carbon fiber composite material.

[0018] Preferably, the rate of gradually increasing the pressure is 1-2 MPa / min.

[0019] Preferably, the gradual heating rate is 2.5-5°C / min.

[0020] Preferably, the gradual cooling rate is 1-2°C / min.

[0021] Beneficial effects of the present invention: the carbon fiber composite material of the present invention has excellent strength and elastic energy storage, which can improve the impact resistance of the badminton racket shaft, thereby improving its durability; at the same time, the carbon fiber composite material of the present invention can also maintain high strength and elasticity under extreme environmental conditions of high temperature and high humidity, further improving the durability of the badminton racket shaft; the preparation method of the present invention is simple and easy to operate, and is suitable for industrial production. DETAILED DESCRIPTION

[0022] The following is a clear and complete description of the technical solutions in the implementation of the present invention. The described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present invention. If the specific conditions are not specified in the embodiments, they are carried out according to the normal conditions or the conditions recommended by the manufacturer. If the manufacturer is not specified for the reagents, instruments, and components used, they are all conventional products that can be purchased commercially.

[0023] The alloy powder of the present invention is prepared by the following method: a metal alloy containing, in atomic percentage, 20-26% Al, 25-32% Cu, 35-40% Ni, and 10-15% Mg is melted in a vacuum induction melting furnace to form a metal melt, and the metal melt is kept for 30 minutes for homogenization, and then the homogenized metal melt is atomized in a closed atomization device protected by nitrogen inert gas, with a metal melt flow rate of 0.5-1 kg / min and a gas flow rate of 100-120 m / min. 3 / min, forming an alloy powder with a particle size of 10 to 15 μm.

[0024] Example 1

[0025] A carbon fiber composite material for a badminton racket shaft, comprising the following raw materials and their weight parts: 55 parts of chopped carbon fibers, 16 parts of epoxy resin, 11 parts of chopped aramid fibers, 9 parts of alloy powder, 3 parts of silicon carbide whiskers and 1 part of composite antioxidant;

[0026] The alloy powder comprises, by atomic percentage, 24% Al, 28% Cu, 37% Ni, and 11% Mg; the length of the short carbon fiber is 30 to 50 nm; the length of the short chopped aramid fiber is 5 to 15 nm; the average particle size of the alloy powder is 10 to 15 μm; the composite antioxidant comprises antioxidant 1010, ultraviolet absorber UV-571, and boron trioxide in a mass ratio of 1:0.5:1;

[0027] The preparation method is as follows:

[0028] (1) Mix the raw materials uniformly according to the above weight parts, and gradually increase the pressure from 10 MPa to 435 MPa at a rate of 1 to 2 MPa / min and maintain the pressure for pressing;

[0029] (2) The above step (1) is then pressed and placed in a nitrogen atmosphere at 350°C, and then gradually heated to 1265°C at a rate of 2.5-5°C / min and sintered at this temperature for 40 minutes, and then gradually cooled to 520°C at a rate of 1-2°C / min and maintained for 100 minutes, and then gradually cooled to 230°C at a rate of 1-2°C / min and maintained for 40 minutes, and then naturally cooled to obtain a carbon fiber composite material.

[0030] Example 2

[0031] A carbon fiber composite material for a badminton racket shaft, which is different from Example 1 in that: 60 parts of chopped carbon fibers, 20 parts of epoxy resin, 14 parts of chopped aramid fibers, 12 parts of alloy powder, 5 parts of silicon carbide whiskers and 2 parts of composite antioxidant; the rest is the same as Example 1.

[0032] Example 3

[0033] A carbon fiber composite material for a badminton racket shaft, which is different from Example 1 in that: 67 parts of chopped carbon fibers, 23 parts of epoxy resin, 17 parts of chopped aramid fibers, 15 parts of alloy powder, 7 parts of silicon carbide whiskers and 3 parts of composite antioxidant; the rest is the same as Example 1.

[0034] Example 4

[0035] A carbon fiber composite material for a badminton racket shaft, which is different from Example 1 in that: 62 parts of chopped carbon fibers, 18 parts of epoxy resin, 14 parts of chopped aramid fibers, 11 parts of alloy powder, 4 parts of silicon carbide whiskers and 2 parts of composite antioxidant; the rest is the same as Example 1.

[0036] Example 5

[0037] A carbon fiber composite material for a badminton racket shaft, which is different from Example 1 in that: 67 parts of chopped carbon fibers, 16 parts of epoxy resin, 11 parts of chopped aramid fibers, 10 parts of alloy powder, 7 parts of silicon carbide whiskers and 1 part of composite antioxidant; the rest is the same as Example 1.

[0038] Example 6

[0039] A carbon fiber composite material for a badminton racket shaft, which is different from Example 1 in that: 28 parts of chopped carbon fibers, 23 parts of epoxy resin, 17 parts of chopped aramid fibers, 10 parts of alloy powder, 3 parts of silicon carbide whiskers and 1 part of composite antioxidant; the rest is the same as Example 1.

[0040] Example 7

[0041] A carbon fiber composite material for a badminton racket shaft, which is different from Example 4 in that: the alloy powder, calculated by atomic percentage, includes: 20% Al, 25% Cu, 40% Ni, 15% Mg; the rest is the same as Example 4.

[0042] Example 8

[0043] A carbon fiber composite material for a badminton racket shaft, which is different from Example 4 in that: the alloy powder, calculated by atomic percentage, includes: 23% Al, 25% Cu, 35% Ni, 10% Mg; the rest is the same as Example 4.

[0044] Example 9

[0045] A carbon fiber composite material for a badminton racket shaft, which is different from Example 4 in that: the alloy powder, calculated by atomic percentage, includes: 26% Al, 26% Cu, 37% Ni, 11% Mg; the rest is the same as Example 4.

[0046] Example 10

[0047] A carbon fiber composite material for a badminton racket shaft, which is different from Example 6 in that: the alloy powder, calculated by atomic percentage, includes: 23% Al, 25% Cu, 35% Ni, 10% Mg; the rest is the same as Example 6.

[0048] Embodiment 11

[0049] A carbon fiber composite material for a badminton racket shaft, which is different from Example 4 in that: its preparation method is as follows:

[0050] (1) Mix the raw materials uniformly according to the above weight parts, and gradually increase the pressure from 10 MPa to 450 MPa at a rate of 1 to 2 MPa / min and maintain the pressure for pressing;

[0051] (2) The above step (1) is then pressed and placed in a nitrogen atmosphere at 350°C, and then gradually heated to 1290°C at a rate of 2.5-5°C / min and sintered for 35 minutes, and then gradually cooled to 530°C at a rate of 1-2°C / min and maintained for 95 minutes, and then gradually cooled to 240°C at a rate of 1-2°C / min and maintained for 35 minutes, and then naturally cooled to obtain a carbon fiber composite material;

[0052] The rest is the same as Example 4.

[0053] Example 12

[0054] A carbon fiber composite material for a badminton racket shaft, which is different from Example 4 in that: its preparation method is as follows:

[0055] (1) Mix the raw materials uniformly according to the above weight parts, and gradually increase the pressure from 10 MPa to 475 MPa at a rate of 1 to 2 MPa / min and maintain the pressure for pressing;

[0056] (2) The above step (1) is then pressed and placed in a nitrogen atmosphere at 350°C, and then gradually heated to 1310°C at a rate of 2.5-5°C / min and sintered at this temperature for 30 minutes, and then gradually cooled to 545°C at a rate of 1-2°C / min and maintained for 90 minutes, and then gradually cooled to 250°C at a rate of 1-2°C / min and maintained for 30 minutes, and then naturally cooled to obtain a carbon fiber composite material;

[0057] The rest is the same as Example 4.

[0058] Embodiment 13

[0059] A carbon fiber composite material for a badminton racket shaft, which is different from Example 1 in that the length of the short carbon fibers is 50 to 70 nm; the rest is the same as Example 1.

[0060] Embodiment 14

[0061] A carbon fiber composite material for a badminton racket shaft, which is different from Example 1 in that the length of the short chopped aramid fibers is 20 to 50 nm; the rest is the same as Example 1.

[0062] Embodiment 15

[0063] A carbon fiber composite material for a badminton racket shaft, which is different from Example 1 in that the average particle size of the alloy powder is 20 to 50 μm; the rest is the same as Example 1.

[0064] Example 16

[0065] A carbon fiber composite material for a badminton racket shaft, which is different from Example 1 in that: the composite antioxidant is composed of antioxidant 1010, ultraviolet absorber UV-571, and boron trioxide in a mass ratio of 1.5:1:1; the rest is the same as Example 1.

[0066] Comparative Example 1

[0067] A carbon fiber composite material for a badminton racket shaft, which is different from Example 1 in that it does not contain alloy powder; the rest is the same as Example 1.

[0068] Comparative Example 2

[0069] A carbon fiber composite material for a badminton racket shaft, which is different from Example 1 in that it does not contain short-cut aramid fibers; the rest is the same as Example 1.

[0070] Comparative Example 3

[0071] A carbon fiber composite material for a badminton racket shaft, which is different from Example 1 in that it does not contain silicon carbide whiskers; the rest is the same as Example 1.

[0072] Comparative Example 4

[0073] A carbon fiber composite material for a badminton racket shaft, which is different from Example 1 in that: the composite antioxidant is composed of antioxidant 1010 and ultraviolet absorber UV-571 in a mass ratio of 1:0.5; the rest is the same as Example 1.

[0074] Comparative Example 5

[0075] A carbon fiber composite material for a badminton racket shaft, which is different from Example 1 in that: the composite antioxidant is composed of antioxidant 1010 and boron trioxide in a mass ratio of 1:1; the rest is the same as Example 1.

[0076] Comparative Example 6

[0077] A carbon fiber composite material for a badminton racket shaft, which is different from Example 1 in that: the alloy powder, calculated by atomic percentage, includes: Al 16%, Cu 28%, Ni 45%, Mg 11%; the rest is the same as Example 1.

[0078] Comparative Example 7

[0079] A carbon fiber composite material for a badminton racket shaft, which is different from Example 1 in that: the alloy powder, calculated by atomic percentage, includes: 24% Al, 32% Cu, 33% Ni, 11% Mg; the rest is the same as Example 1.

[0080] Comparative Example 8

[0081] A carbon fiber composite material for a badminton racket shaft, which is different from Example 1 in that: the alloy powder comprises, by atomic percentage, 28% Al, 23% Cu, 37% Ni, and 12% Mg; the rest is the same as Example 1.

[0082] Comparative Example 9

[0083] The preparation method is as follows:

[0084] (1) Mix the raw materials uniformly according to the above weight parts and press at a pressure of 435 MPa;

[0085] (2) The above step (1) is then pressed and placed in a nitrogen atmosphere at 350°C, and then gradually heated to 1265°C at a rate of 2.5-5°C / min and sintered at this temperature for 40 minutes, and then gradually cooled to 520°C at a rate of 1-2°C / min and maintained for 100 minutes, and then gradually cooled to 230°C at a rate of 1-2°C / min and maintained for 40 minutes, and then naturally cooled to obtain a carbon fiber composite material.

[0086] Comparative Example 10

[0087] The preparation method is as follows:

[0088] (1) Mix the raw materials uniformly according to the above weight parts, and gradually increase the pressure from 10 MPa to 435 MPa at a rate of 1 to 2 MPa / min and maintain the pressure for pressing;

[0089] (2) The above step (1) is then pressed and placed in a nitrogen atmosphere at 1265°C, and sintered for 40 minutes, then gradually cooled to 520°C at a rate of 1 to 2°C / min and maintained for 100 minutes, then gradually cooled to 230°C at a rate of 1 to 2°C / min and maintained for 40 minutes, and then naturally cooled to obtain a carbon fiber composite material.

[0090] Comparative Example 11

[0091] The preparation method is as follows:

[0092] (1) Mix the raw materials uniformly according to the above weight parts, and gradually increase the pressure from 10 MPa to 435 MPa at a rate of 1 to 2 MPa / min and maintain the pressure for pressing;

[0093] (2) The above step (1) is then pressed and placed in a nitrogen atmosphere at 1265°C, and sintered for 40 minutes, then rapidly cooled to 520°C at a rate of 5-10°C / min and maintained for 100 minutes, and then naturally cooled to obtain a carbon fiber composite material.

[0094] Performance Testing

[0095] The performance tests of the products obtained in Examples 1-16 and Comparative Examples 1-11 of the present invention are performed, and the results are shown in the following table:

[0096]

[0097] It can be seen from the above table that the carbon fiber composite materials of Examples 1 to 16 of the present invention have excellent strength and elastic energy storage, can be used to produce a lighter badminton racket shaft, and can improve the impact resistance of the badminton racket shaft, thereby improving the durability of the badminton racket shaft. By comparing Comparative Examples 1 to 5 with Example 1, it is found that the carbon fiber composite material prepared by using chopped aramid fiber, alloy powder, silicon carbide whisker and composite antioxidant in conjunction with chopped carbon fiber and epoxy resin has higher strength and elasticity, can better adapt to high temperature and high humidity environment, and the prepared badminton racket shaft is lighter and better in quality, better in impact resistance and more durable; by comparing Comparative Examples 6 to 8 with Example 1, it is found that excessive or insufficient nickel, copper and aluminum content in the alloy powder will affect the strength and elasticity of the carbon fiber composite material, and its adaptability in high temperature and high humidity environment will also be reduced, resulting in reduced quality, impact resistance and durability of the prepared badminton racket shaft; by comparing Comparative Examples 9 and 11 with Example 1, it is found that the pressure change of pressing and the temperature change of the sintering process both reduce the strength and elasticity of the carbon fiber composite material, and reduce its adaptability in high temperature and high humidity environment, thereby affecting the quality of the prepared badminton racket shaft and its impact resistance and durability.

[0098] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit and essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0099] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A carbon fiber composite material for a badminton racket shaft, characterized in that: The invention comprises the following raw materials and their weight parts: 55-67 parts of chopped carbon fiber, 16-23 parts of epoxy resin, 11-17 parts of chopped aramid fiber, 9-15 parts of alloy powder, 3-7 parts of silicon carbide whisker and 1-3 parts of composite antioxidant; The alloy powder comprises, by atomic percentage, 20-26% Al, 25-32% Cu, 35-40% Ni and 10-15% Mg.

2. The carbon fiber composite material for a badminton racket shaft according to claim 1, characterized in that: The composite antioxidant consists of antioxidant 1010, ultraviolet absorber UV-571 and boron trioxide.

3. The carbon fiber composite material for a badminton racket shaft according to claim 1, characterized in that: The length of the short carbon fibers is 30 to 50 nm.

4. The carbon fiber composite material for a badminton racket shaft according to claim 1, characterized in that: The length of the short-cut aramid fibers is 5 to 15 nm.

5. The carbon fiber composite material for a badminton racket shaft according to claim 1, characterized in that: The average particle size of the alloy powder is 10 to 15 μm.

6. The carbon fiber composite material for a badminton racket shaft according to claim 1 or 2, characterized in that: The composite antioxidant is composed of antioxidant 1010, ultraviolet absorber UV-571 and boron trioxide in a mass ratio of 1:0.5:

1.

7. The carbon fiber composite material for a badminton racket shaft according to claim 1, characterized in that: The alloy powder is prepared by the following method: a metal alloy is melted in a vacuum induction melting furnace to form a metal melt, and the metal melt is kept for 30 minutes for homogenization, and then the homogenized metal melt is atomized in a closed atomization device protected by inert gas to form an alloy powder with a particle size of 10 to 15 μm.

8. A method for preparing the carbon fiber composite material for a badminton racket shaft according to claim 1, characterized in that: The steps include: (1) Mix the raw materials uniformly according to the above weight parts, and gradually increase the pressure from 10 MPa to 435-475 MPa and maintain the pressure for pressing; (2) The above step (1) is then pressed and placed in a nitrogen atmosphere at 350°C, and then gradually heated to 1265-1310°C and sintered for 30-40 minutes, then gradually cooled to 520-545°C and maintained for 90-100 minutes, then gradually cooled to 230-250°C and maintained for 30-40 minutes, and then naturally cooled to obtain a carbon fiber composite material.

9. The method for preparing the carbon fiber composite material for badminton racket shaft according to claim 8, characterized in that: The rate of gradual pressure increase in step (1) is 1-2 MPa / min.

10. The method for preparing the carbon fiber composite material for badminton racket shaft according to claim 8, characterized in that: The rate of gradual heating in step (2) is 2.5-5°C / min; the rate of gradual cooling is 1-2°C / min.

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