A method for producing a carbon fiber cloth composite material and a product thereof

Abstract

The application discloses a kind of carbon fiber cloth composite materials and its product.The application discloses a kind of preparation method of carbon fiber cloth composite material, spinning component and functional component are grinded into slurry using low-temperature wet grinding process, then film is formed on the surface of carbon fiber cloth by means of electrostatic spinning process, finally, carbon fiber cloth composite material is obtained after roll pressing solidification.The carbon fiber cloth composite material obtained has good thermal stability, can still maintain fiber network composite structure under high-temperature environment not higher than 280 DEG C, can be applied to high-temperature flue gas filtration, high-temperature resistant heat insulation and other occasions, and has good antibacterial effect at normal temperature, suitable for various environments.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of composite materials, and particularly relates to a preparation method of carbon fiber cloth composite material and a product thereof. BACKGROUND

[0002] Carbon fiber cloth is a high-performance material with excellent properties such as light weight, high strength, high rigidity, and corrosion resistance, and is widely used in aerospace, automotive, sports equipment, construction, electronics, and other fields. Carbon fiber cloth is a textile made of carbon fibers through weaving, weaving, and lamination processes. Carbon fiber is a fiber composed of carbon atoms, with a diameter of 5-10 microns and a length of several kilometers. Carbon fiber has excellent properties such as light weight, high strength, high rigidity, high temperature resistance, and corrosion resistance, making it an ideal structural material. Carbon fiber is usually made from polyacrylonitrile (PAN), coal tar pitch, and cellulose as raw materials through spinning, airflow stretching, and high-temperature carbonization processes. Carbon fiber is woven or woven into cloth. The weaving process usually uses plain weave, twill weave, and jacquard weave, while the weaving process uses multiple weaving or weftless weaving. Multiple layers of carbon fiber cloth are stacked together to form a predetermined thickness and structure, and the stacked carbon fiber cloth is bonded or compressed to form a unit.

[0003] Carbon fiber cloth has many excellent properties. The density of carbon fiber cloth is generally 1.5-2.0 g / cm³, which is much lighter than steel and other metal materials. The tensile strength of carbon fiber cloth can reach more than 3000 MPa, which is 5-10 times higher than that of steel and other metal materials. Carbon fiber cloth has high elastic modulus and high rigidity, which can be used to manufacture high-strength and high-rigidity structural parts. Carbon fiber cloth is not easily chemically corroded and can be used to manufacture corrosion-resistant structural parts. Carbon fiber cloth has good thermal stability and can be used in high-temperature environments. SUMMARY

[0004] The present application aims to provide a preparation method of carbon fiber cloth composite material.

[0005] The present application further aims to provide a carbon fiber cloth composite material product prepared by the above method.

[0006] The present application achieves the above-mentioned purpose by the following scheme: a preparation method of carbon fiber cloth composite material, which grinds the spinning components and functional components into slurry by low-temperature wet grinding process, then performs film coating on the surface of carbon fiber cloth by electrospinning process, and finally obtains carbon fiber cloth composite material through roll pressing and curing. The material ratio is calculated by mass fraction, including:

[0007]

[0008] including the following preparation steps;

[0009] (1) Modified slurry preparation: according to the material ratio, polyphenyl ether, peroxide and antibacterial agent are added to toluene for batching, each material is sieved to 150 meshes, after premixing, it is filled into a wet grinding device, and the material is discharged when the particle size D 90 ≤2μm is obtained, which can be used for electrospinning;

[0010] (2) Electrospun carbon fiber cloth: the modified slurry is added to the rubber tank, at the same time, the rubber tank is connected to the peristaltic pump slurry circulating feeding system, so that the amount of modified slurry in the rubber tank is kept 3-5mm below the bottom of the rubber roller, the rubber roller is connected to a high voltage of 70-100KV and rotates at a uniform speed; the carbon fiber cloth is tightly attached to the electrode plate above the rubber roller and is horizontally and uniformly wound, the slurry on the upper end of the rubber roller forms a jet under the action of high voltage electrostatic field and is uniformly deposited on the carbon fiber cloth to form a fiber mesh film, and a coated carbon fiber cloth is obtained;

[0011] (3) The coated carbon fiber cloth is cured by high temperature rolling to obtain a carbon fiber cloth composite material.

[0012] Among them,

[0013] The polyphenyl ether is propylene polyphenyl ether, and the peroxide is benzoyl peroxide (BPO).

[0014] The antibacterial agent is a silver-loaded inorganic salt.

[0015] The carbon fiber cloth used has a grammage of 250-300g / m 2 .

[0016] In step (1), the grinding medium is zirconia microspheres with a diameter ≤0.1mm; the grinding speed is 1700-2000rpm.

[0017] In step (2), the voltage during spinning is 70-100KV, the distance h from the upper end of the rubber roller to the electrode plate is 170-200mm, the unwoven cloth unwinding speed is 0.2-0.8m / min, the spinning space environment temperature is 50-60℃, and the humidity is 40%-60%. Figure 1 In step (2), multiple parallel rubber rollers can be placed in the rubber tank at the same time, these rubber rollers have the same specifications, can be connected to electricity and rotated for rubber coating, and the rotating directions can be controlled individually.

[0018] In step (2), the voltage during spinning is 70-100KV, the distance h from the upper end of the rubber roller to the electrode plate is 170-200mm, the unwoven cloth unwinding speed is 0.2-0.8m / min, the spinning space environment temperature is 50-60℃, and the humidity is 40%-60%.

[0019] In step (3), the temperature during high temperature rolling is 280℃, and the rolling time is 5-10 minutes.

[0020] This invention provides a carbon fiber cloth composite material, prepared according to any of the methods described above. The resulting carbon fiber cloth composite material has good thermal stability and can maintain its fiber network composite structure even at high temperatures not exceeding 280°C. It can be applied to high-temperature flue gas filtration, high-temperature insulation, and other applications. At the same time, it has good antibacterial effects at room temperature and is adaptable to various environments. Attached Figure Description

[0021] Appendix Figure 1 Flowchart of carbon fiber fabric composite process

[0022] Explanation of the labels in the diagram:

[0023] 1—Glue trough; 11—Glue roller;

[0024] 2 – Slurry feeding tank; 21, 22 – Peristaltic pumps one and two;

[0025] 3—Electrode plate;

[0026] 4—Carbon fiber deployment reel;

[0027] 5—High-temperature roller pressing room;

[0028] 6—Unwinding roller;

[0029] 7 - Take-up roller. Detailed Implementation

[0030] The present invention will be described in detail through the following specific examples, but the scope of protection of the present invention is not limited to these embodiments.

[0031] Example 1

[0032] A carbon fiber cloth composite material is prepared by grinding the spinning component and the functional component into a slurry using a low-temperature wet grinding process, then coating the carbon fiber cloth surface with a film using an electrospinning process, and finally curing it by roll pressing. The carbon fiber cloth composite material is prepared according to the following steps.

[0033] (1) Take 120g of propylene polyphenylene ether, 2g of benzoyl peroxide and 1g of antibacterial powder and add them to 1000g of toluene. Each material is sieved through a 150-mesh sieve. After premixing, it is poured into a wet grinding equipment. The grinding media is zirconia microspheres. Grind at 2000rpm below 3℃. When the particle size D in the material is... 90 When the particle size is ≤2μm, the material is discharged to obtain a modified slurry that can be used for electrospinning;

[0034] (2) The modified slurry is added to the glue tank 1, at the same time, the glue tank 1 is connected to the peristaltic pump slurry circulating feeding system, so that the amount of modified slurry added in the glue tank 1 is kept 3-5mm below the bottom of the glue roller 11, the glue roller 11 is connected to 75KV high voltage and rotates at a uniform speed to apply glue; the distance h between the glue roller 11 and the electrode plate 3 is 170mm, the spinning environment temperature is 60℃, and the humidity is 40%; the carbon fiber cloth 4 wound on the unwinding roller 6 is pulled to tightly adhere to the electrode plate 3 directly above the glue roller 11 to make horizontal uniform speed winding action, the unwinding speed is 0.7m / min, the slurry at the upper end of the glue roller 11 forms a jet upward under the action of high voltage electrostatic field force, and is uniformly deposited on the carbon fiber cloth to form a fiber web film, thereby obtaining a film-coated carbon fiber cloth;

[0035] (3) The film-coated carbon fiber cloth is pressed by the high temperature roller 5 for 5 minutes to obtain a carbon fiber cloth composite material sample 1, which is wound by the winding roller 7, and the test data are shown in Table 1.

[0036] As shown in Figure 1 , the peristaltic pump slurry circulating feeding system is connected to the inlet and outlet of the glue tank 1 through the conveying pipe, and includes the peristaltic pumps one and two 21, 22 and the slurry feeding tank 2; the excessive slurry in the glue tank 1 is pumped out by the peristaltic pump one 21 and sent into the slurry feeding tank 2; when the slurry in the glue tank 1 is lower than the reference of 3-5mm below the bottom of the glue roller 11, the slurry is supplemented to the glue tank 1 by the peristaltic pump two 22.

[0037] Example 2

[0038] A carbon fiber cloth composite material is prepared by the following steps.

[0039] (1) 1000g of toluene, 180g of propylene polyphenyl ether, 8g of benzoyl peroxide and 3g of antibacterial powder are pre-mixed and then poured into a wet grinding device; the pre-mixed material is ground in the wet grinding device at a speed of 2000rpm below 3℃, the grinding speed is 2000rpm, and the material temperature is controlled below 3℃ during grinding; when the particle size D90 of the material is 2μm, the material is discharged, thereby obtaining modified slurry for electrospinning;

[0040] (2) The modified slurry is added to the glue tank 1, at the same time, the glue tank 1 is connected to the peristaltic pump slurry circulating feeding system, so that the amount of modified slurry added in the glue tank 1 is kept 3-5mm below the bottom of the glue roller 11, the glue roller 11 is connected to 75KV high voltage and rotates at a uniform speed to apply glue; the distance h between the glue roller 11 and the electrode plate 3 is 170mm, the spinning environment temperature is 60℃, and the humidity is 40%; the carbon fiber cloth 4 wound on the unwinding roller 6 is pulled to tightly adhere to the electrode plate 3 directly above the glue roller 11 to make horizontal uniform speed winding action, the unwinding speed is 0.7m / min, the slurry at the upper end of the glue roller 11 forms a jet upward under the action of high voltage electrostatic field force, and is uniformly deposited on the carbon fiber cloth to form a fiber web film, thereby obtaining a film-coated carbon fiber cloth;

[0041] (3) After rolling and curing at 280℃ for 8 minutes, carbon fiber cloth composite sample 2 was obtained, and the test data are shown in Table 1.

[0042] Example 3

[0043] A carbon fiber cloth composite was prepared according to the following steps:

[0044] (1) 1000g of toluene, 200g of propylene polyphenyl ether, 10g of benzoyl peroxide and 4g of antibacterial powder were pre-mixed and then filled into a wet grinding device. The grinding medium was zirconium oxide microspheres, the grinding rotation speed was 2000rpm, and the material temperature was controlled below 3℃ during grinding. When the particle size D90 in the material was 2μm, the material was discharged, and a modified slurry for electrospinning was obtained;

[0045] (2) The modified slurry was added to the rubber tank 1, and the amount of addition was 3~5mm of the rubber roll 11 immersed in the slurry. At the same time, a peristaltic pump slurry circulating feeding system was connected, the rubber roll 11 was connected to a high voltage of 95KV and rotated at an appropriate speed for coating, the distance h between the rubber roll 11 and the electrode plate 3 was 195mm, the spinning environment temperature was 60℃, and the humidity was 40%; the carbon fiber cloth 4 was tightly attached to the electrode plate 3 and made a horizontal uniform speed winding action, the unwinding speed was 0.2m / min, and the slurry at the upper end of the rubber roll 11 formed a jet upward under the action of high voltage electrostatic field force, and uniformly deposited on the carbon fiber cloth to form a film network, and a film-coated carbon fiber cloth was obtained;

[0046] (3) After rolling and curing at 280℃ for 10 minutes, carbon fiber cloth composite sample 3 was obtained, and the test data are shown in Table 1:

[0047] .

Claims

1. A method for preparing a carbon fiber cloth composite material, characterized in that, The spinning components and functional components are ground into a slurry using a low-temperature wet grinding process. Then, an electrospinning process is used to coat the surface of carbon fiber cloth. Finally, the carbon fiber cloth composite material is obtained by roll pressing and curing. The slurry material composition, by mass, includes: 100 parts toluene, 12-20 parts polyphenylene ether, 0.2-1 parts peroxide, and 0.1-0.4 parts antibacterial agent; including the following steps; (1) Add polyphenylene ether, peroxide and antibacterial agent to toluene according to the material ratio for batching. Each material is sieved through a 150-mesh sieve. After premixing, the mixture is poured into a wet grinding equipment and ground at a temperature below 3°C. When the particle size D in the material is... 90 When the particle size is ≤2μm, the material is discharged to obtain a modified slurry that can be used for electrospinning; (2) Add the modified slurry to the adhesive tank. At the same time, the adhesive tank is connected to the peristaltic pump slurry circulation and feeding system so that the amount of modified slurry added to the adhesive tank is 3-5mm below the bottom of the adhesive roller. The adhesive roller is connected to a high voltage of 70~100KV and rotates at a uniform speed to apply adhesive. The carbon fiber cloth is closely attached to the electrode plate directly above the adhesive roller and is wound horizontally at a uniform speed. The slurry at the top of the adhesive roller forms a jet upward under the action of the high voltage electrostatic field and is uniformly deposited on the carbon fiber cloth to form a fiber web, thus obtaining the coated carbon fiber cloth. (3) The coated carbon fiber cloth is cured by high temperature roll pressing to obtain carbon fiber cloth composite material; The polyphenylene ether is propylene-based polyphenylene ether; the peroxide is benzoyl peroxide (BPO); The antibacterial agent is a silver-loaded inorganic salt; The grinding media used in wet grinding are zirconia microspheres with a diameter ≤0.1mm; the grinding speed is 1700~2000rpm. The weight of the carbon fiber cloth used is 250~300 g / m. 2 .

2. The method for preparing a carbon fiber cloth composite material according to claim 1, characterized in that, During spinning, multiple parallel gluing rollers can be placed in the gluing tank in Figure 1 at the same time. These rollers are of the same specification and can be connected to electricity to rotate and apply glue at the same time, and the rotation direction can be controlled individually.

3. The method for preparing a carbon fiber cloth composite material according to claim 1, characterized in that... During spinning, the distance h from the top of the rubber roller to the electrode plate is 170~200mm, the unwinding speed of the carbon fiber cloth is 0.2~0.8m / min, the ambient temperature of the spinning space is 50~60℃, and the humidity is 40%~60%.

4. The method for preparing a carbon fiber cloth composite material according to claim 1, characterized in that... The temperature during high-temperature roller pressing is 280℃, and the pressing time is 5~10 minutes.

5. A carbon fiber cloth composite material, characterized in that... The carbon fiber cloth composite material prepared according to any one of claims 1-4 maintains a stable fiber network composite structure at a high temperature of not exceeding 280°C, and has an antibacterial effect at room temperature.

6. An application of the carbon fiber cloth composite material according to claim 5, used in high-temperature flue gas filtration, high-temperature heat insulation layer and room-temperature antibacterial filter membrane.

Images