A method for manufacturing a continuous fiber-reinforced ceramic composite prepreg tape and an apparatus therefor

Abstract

The present application relates to the technical field of continuous fiber reinforced ceramic composite material, and particularly relates to a preparation method and equipment of continuous fiber reinforced ceramic composite material prepreg tape.The preparation method comprises the following steps: unwinding the continuous fiber and carrying out yarn spreading, adopting light curing process to combine the continuous fiber after yarn spreading with ceramic slurry, forming continuous fiber reinforced ceramic composite material, combining the continuous fiber reinforced ceramic composite material with adhesive film, and heating to make the adhesive film melt and immerse into the continuous fiber reinforced ceramic composite material to form continuous fiber reinforced ceramic composite material prepreg tape.The preparation method provided by the present application has the advantages of simple and efficient process, and the prepared continuous fiber reinforced ceramic composite material prepreg tape has excellent mechanical properties, high temperature resistance and corrosion resistance, and the material is convenient to use, which can shorten the product processing procedure and improve the production efficiency.

Description

Technical Field

[0001] This invention relates to the field of continuous fiber reinforced ceramic composite materials technology, and in particular to a method and equipment for preparing a continuous fiber reinforced ceramic composite prepreg tape. Background Technology

[0002] Ceramic matrix composites, due to their high temperature resistance, high strength, low density, and excellent oxidation and corrosion resistance, have become important materials in cutting-edge technology fields such as aerospace and nuclear power. Among them, materials obtained by combining fibers and ceramics can combine both toughness and strength, showing broad application prospects. However, the manufacturing process of continuous fiber reinforced ceramic composites is complex, involving multiple production processes such as yarn spreading, impregnation, pretreatment, interfacial bonding strength assessment, and additive manufacturing, making it difficult to implement and limiting its application. Therefore, it is necessary to design a preparation process for continuous fiber reinforced ceramic composites. Summary of the Invention

[0003] To address the challenge of complex manufacturing processes for continuous fiber reinforced ceramic composites, this invention provides a method for preparing a prepreg tape of continuous fiber reinforced ceramic composites, comprising the following steps:

[0004] (1) After unwinding the continuous fiber, it is spread out and then the continuous fiber after spreading is combined with ceramic slurry by photocuring process to form a continuous fiber reinforced ceramic composite material.

[0005] (2) The continuous fiber reinforced ceramic composite material is combined with the adhesive film, and the adhesive film is heated to melt and immerse into the continuous fiber reinforced ceramic composite material to form a continuous fiber reinforced ceramic composite prepreg tape;

[0006] (3) After the continuous fiber reinforced ceramic composite prepreg tape obtained in step (2) is combined with release paper on one side, it is wound up.

[0007] Furthermore, before step (1), a pretreatment of the continuous fiber is included. The pretreatment is as follows: the continuous fiber is soaked and pre-cleaned with alkaline solution A, and then the cleaned continuous fiber is soaked in alkaline solution B. After heat treatment, it is cleaned and dried to obtain the final product.

[0008] Furthermore, the heat treatment involves placing the continuous fibers, which are immersed in alkaline solution B, in -50°C and 60°C in sequence, and repeating this process multiple times.

[0009] Furthermore, the concentration of alkaline solution A is 50-80 wt%, and the concentration of alkaline solution B is 60-85 wt%.

[0010] By impregnating and pre-cleaning the continuous fibers with alkaline solution A, inert functional groups and impurities on the surface of the continuous fibers can be removed, facilitating subsequent processing. After cleaning, the continuous fibers undergo multiple low-temperature-high-temperature and alkaline treatments, allowing them to fully react with alkaline solution B during thermal expansion and contraction, thereby making the surface of the continuous fibers smooth and improving the quality of material molding.

[0011] Further, in step (1), the ceramic slurry comprises, by mass percentage, 40wt%-60wt% of 1000-mesh alumina, 10wt%-15wt% of 500-mesh alumina fiber powder, 10wt%-15wt% of liquid photosensitive resin, 10wt%-12wt% of dispersant, and 10wt%-18wt% of solvent; the dispersant is a 40wt% sodium hydroxide solution, and the solvent is anhydrous ethanol.

[0012] Furthermore, the method for preparing the ceramic slurry is as follows:

[0013] The alumina powder, alumina fiber powder, and the first part of the solvent were added to a reaction vessel and stirred evenly at a stirring rate of 100 r / min for 5 min. Then, a dispersant was added while stirring to cause flocculation and precipitation. Next, the second part of the solvent was added and stirring was continued for 6-8 min at a stirring rate of 300 r / min. After standing for 10 min, the third part of the solvent and liquid photosensitive resin were added and stirring was continued for another 10 min at a stirring rate of 300 r / min to obtain the ceramic slurry.

[0014] The total amount of solvent is the sum of the amounts of the first part, the second part, and the third part.

[0015] Furthermore, the photocuring process described in step (1) includes ceramic slurry spraying and laser curing, and the parameters of the ceramic slurry nozzle are as follows:

[0016] The air pressure is 2000 ps i;

[0017] The nozzle diameter is 1.5-2mm;

[0018] The nozzle diffusion area is compared to the product area;

[0019] The distance between the nozzle and the product should be maintained at 150–300 mm;

[0020] The nozzle moving speed is 50-100 mm / s.

[0021] The parameters of the curing laser head are:

[0022] The laser head coverage area is compared to the product area;

[0023] The laser head has a power of 100W.

[0024] Furthermore, the continuous fiber is at least one of carbon fiber, alumina fiber, and silicon carbide fiber.

[0025] The present invention also provides an apparatus for realizing the above-mentioned method for preparing continuous fiber reinforced ceramic composite prepreg tape, comprising an unwinding device, a yarn spreading device, a light curing device, a composite roller device and a winding device arranged in sequence, wherein the composite roller device includes a heating component.

[0026] Furthermore, a first traction device is provided between the unwinding device and the yarn spreading device, and a second traction device is provided between the photocuring device and the composite roller device. It is understood that the traction device is a common existing device, and the number and position of the traction device are not limited thereto; it is sufficient to be able to traction continuous fibers sequentially for unwinding, spreading, laminating with adhesive film and release paper, and winding.

[0027] Furthermore, the composite roller device includes a first multi-roller assembly, a film roller, and a second multi-roller assembly;

[0028] The first multi-roller assembly includes a first roller and a second roller arranged adjacent to each other, with the adhesive film roller located on one side of the second roller. The first roller is used to pull the continuous fiber reinforced ceramic composite material, and the second roller is used to pull the adhesive film on the adhesive film roller, and the continuous fiber reinforced ceramic composite material and the adhesive film are compounded through the first roller and the second roller.

[0029] The second multi-roller assembly includes a third roll and a release paper roll. The release paper roll is used to pull the release paper on the film roll, and the third roll is used to pull the continuous fiber reinforced ceramic composite prepreg tape and composite the continuous fiber reinforced ceramic composite prepreg tape with the release paper.

[0030] Furthermore, the first multi-roller assembly also includes a first guide roller and a composite roller. The first guide roller is disposed above the first roller and is used to change the moving direction of the continuous fiber reinforced ceramic composite material and the prepreg tape. The second roller and the composite roller are located below the first roller and form an equilateral triangle structure, through which the continuous fiber reinforced ceramic composite material and the adhesive film are further composited. The heating assembly is disposed on the first roller.

[0031] The second multi-roller assembly also includes a second guide roller, which is disposed above the third roller and is used to change the moving direction of the continuous fiber-reinforced ceramic composite prepreg belt.

[0032] Compared with the prior art, the method for preparing continuous fiber reinforced ceramic composite prepreg tape provided by the present invention has the advantages of simple and efficient process. The obtained continuous fiber reinforced ceramic composite prepreg tape has excellent mechanical properties, high temperature resistance and corrosion resistance. Moreover, the material is easy to use, which can shorten the product processing steps and improve production efficiency. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a flow chart of the ceramic slurry preparation process provided in an embodiment of the present invention;

[0035] Figure 2 This is a schematic diagram of the equipment used in the method for preparing continuous fiber reinforced ceramic composite prepreg tape according to an embodiment of the present invention;

[0036] Figure 3 This is a schematic diagram of the composite roller device provided in an embodiment of the present invention. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] This invention provides a method for preparing a continuous fiber-reinforced ceramic composite prepreg tape, comprising the following steps:

[0040] (1) After unwinding the continuous fiber, it is spread out and then the continuous fiber after spreading is combined with ceramic slurry by photocuring process to form a continuous fiber reinforced ceramic composite material.

[0041] (2) The continuous fiber reinforced ceramic composite material is combined with the adhesive film, and the adhesive film is heated to melt and immerse into the continuous fiber reinforced ceramic composite material to form a continuous fiber reinforced ceramic composite prepreg tape;

[0042] (3) After the obtained continuous fiber reinforced ceramic composite prepreg tape is laminated with release paper on one side, it is wound up.

[0043] Before unwinding, the continuous fibers undergo pretreatment, which involves immersing and pre-cleaning the continuous fibers in an alkaline solution A, then soaking the cleaned continuous fibers in an alkaline solution B, followed by heat treatment, cleaning, and drying.

[0044] The concentration of alkaline solution A is 50-80 wt%, and the concentration of alkaline solution B is 60-85 wt%.

[0045] The heat treatment involves placing continuous fibers soaked in alkaline solution B at -50°C and 60°C in sequence, and repeating this process multiple times.

[0046] Example 1

[0047] A method for preparing a continuous fiber-reinforced ceramic composite prepreg tape includes the following steps:

[0048] (1) Pretreatment: The carbon fiber is impregnated and pre-cleaned with 50wt% sodium hydroxide solution, and then the cleaned carbon fiber is immersed in 70wt% sodium hydroxide solution. After that, the carbon fiber immersed in 70wt% sodium hydroxide solution is placed in -50℃ and 60℃ respectively and repeated twice. After cleaning, drying and winding, the pretreated carbon fiber is obtained.

[0049] (2) After unwinding the pretreated carbon fibers, the fibers are spread out and then composited with ceramic slurry using a photocuring process to form a continuous fiber-reinforced ceramic composite material. The ceramic slurry comprises, by mass percentage, 40 wt% 1000-mesh alumina, 15 wt% 500-mesh alumina fiber powder, 15 wt% liquid photosensitive resin, 12 wt% dispersant, and 18 wt% solvent. The dispersant is a 40 wt% sodium hydroxide solution, and the solvent is anhydrous ethanol.

[0050] (3) The continuous fiber reinforced ceramic composite material is combined with the adhesive film, and the adhesive film is heated to melt and impregnate the continuous fiber reinforced ceramic composite material to form a continuous fiber reinforced ceramic composite prepreg tape;

[0051] (4) After the release paper is laminated on one side of the continuous fiber reinforced ceramic composite prepreg tape, it is wound up.

[0052] Example 2

[0053] A method for preparing a continuous fiber-reinforced ceramic composite prepreg tape includes the following steps:

[0054] (1) Pretreatment: Alumina fibers are soaked and pre-cleaned with 80wt% sodium hydroxide solution, and then the cleaned alumina fibers are soaked in 60wt% sodium hydroxide solution. After that, the alumina fibers soaked in 70wt% sodium hydroxide solution are placed in -50℃ and 60℃ respectively and repeated four times. After cleaning, drying and winding, pretreated alumina fibers are obtained.

[0055] (2) After unwinding the pretreated alumina fibers, the fibers are spread out and then composited with ceramic slurry using a photocuring process to form a continuous fiber-reinforced ceramic composite material. The ceramic slurry comprises, by mass percentage, 60 wt% 1000-mesh alumina, 10 wt% 500-mesh alumina fiber powder, 10 wt% liquid photosensitive resin, 10 wt% dispersant, and 10 wt% solvent. The dispersant is a 40 wt% sodium hydroxide solution, and the solvent is anhydrous ethanol.

[0056] (3) The continuous fiber reinforced ceramic composite material is combined with the adhesive film, and the adhesive film is heated to melt and impregnate the continuous fiber reinforced ceramic composite material to form a continuous fiber reinforced ceramic composite prepreg tape;

[0057] (4) After the release paper is laminated on one side of the continuous fiber reinforced ceramic composite prepreg tape, it is wound up.

[0058] Example 3

[0059] A method for preparing a continuous fiber-reinforced ceramic composite prepreg tape includes the following steps:

[0060] (1) Pretreatment: Silicon carbide fibers were impregnated and pre-cleaned with 60wt% sodium hydroxide solution, and then the cleaned silicon carbide fibers were soaked in 85wt% sodium hydroxide solution. After that, the silicon carbide fibers soaked in 70wt% sodium hydroxide solution were placed in -50℃ and 60℃ respectively and repeated three times. The pretreated silicon carbide fibers were then cleaned, dried and wound up.

[0061] (2) After unwinding the pretreated silicon carbide fibers, the fibers are spread out and then composited with ceramic slurry using a photocuring process to form a continuous fiber-reinforced ceramic composite material. The ceramic slurry comprises, by mass percentage, 50 wt% 1000-mesh alumina, 12 wt% 500-mesh alumina fiber powder, 13 wt% liquid photosensitive resin, 11 wt% dispersant, and 14 wt% solvent. The dispersant is a 40 wt% sodium hydroxide solution, and the solvent is anhydrous ethanol.

[0062] (3) The continuous fiber reinforced ceramic composite material is combined with the adhesive film, and the adhesive film is heated to melt and impregnate the continuous fiber reinforced ceramic composite material to form a continuous fiber reinforced ceramic composite prepreg tape;

[0063] (4) After the release paper is laminated on one side of the continuous fiber reinforced ceramic composite prepreg tape, it is wound up.

[0064] in, Figure 1 As shown, the preparation method of the ceramic slurry in Examples 1-3 is as follows:

[0065] Alumina powder, alumina fiber powder, and anhydrous ethanol were added to a reaction vessel and stirred evenly at a stirring rate of 100 r / min for 5 min. Then, a dispersant was added while stirring to induce flocculation and precipitation. Next, anhydrous ethanol was added, and stirring was continued for 8 min at a stirring rate of 300 r / min. After standing for 10 min, anhydrous ethanol and liquid photosensitive resin were added, and stirring was continued for another 10 min at a stirring rate of 300 r / min to obtain the ceramic slurry.

[0066] The photocuring process in Examples 1-3 includes ceramic slurry spraying and laser curing. The parameters of the ceramic slurry nozzle are as follows:

[0067] The air pressure is 2000 ps i;

[0068] The nozzle diameter is 2mm;

[0069] The nozzle diffusion area is compared to the product area;

[0070] The distance between the nozzle and the product should be maintained at 200mm;

[0071] The nozzle moving speed is 80 mm / s.

[0072] The parameters of the curing laser head are:

[0073] The laser head coverage area is compared to the product area;

[0074] The laser head has a power of 100W.

[0075] Comparative Example 1

[0076] Unlike Example 1, step (1) pretreatment is not included. In step (2), the carbon fiber is unwound and then unwound. The remaining steps are the same as in Example 1.

[0077] Comparative Example 2

[0078] Unlike Example 1, the pretreatment in step (1) is as follows: the carbon fiber is impregnated and pre-cleaned with a 50 wt% sodium hydroxide solution, and then the cleaned carbon fiber is immersed in a 70 wt% sodium hydroxide solution, cleaned, dried, and wound to obtain the pretreated carbon fiber. The remaining steps are the same as in Example 1.

[0079] Comparative Example 3

[0080] Unlike Example 1, the ceramic slurry was prepared by adding all raw materials into a reaction vessel and stirring for 20 minutes at a stirring rate of 100 r / min. The remaining steps were the same as in Example 1.

[0081] The resin content and interfacial bonding strength of the continuous fiber reinforced ceramic composite prepreg tapes prepared in Examples 1-3 and Comparative Examples 1-3 were tested. The test standards were GB / T 32788.5-2016 Prepreg Performance Test Part 5: Determination of Resin Content and GB / T 32788.4-2016 Prepreg Performance Test Part 4: Determination of Tensile Strength. The test results are shown in Table 1.

[0082] Table 1

[0083] Fiber types Adhesive content (%) Interfacial bond strength (MPa) Example 1 30 80 Example 2 32 120 Example 3 30 90 Comparative Example 1 20 61 Comparative Example 2 25 72 Comparative Example 3 26 65

[0084] As shown in Table 1, the adhesive content of the continuous fiber reinforced ceramic composite prepreg tape provided by this invention can reach more than 30%, thus providing sufficient adhesion for subsequent processing and making it convenient to use. On the other hand, the interfacial bonding strength of the prepreg tape is related to the type of continuous fiber, but it can reach more than 80 MPa, indicating that the continuous fiber reinforced ceramic composite prepreg tape provided by this invention has excellent mechanical properties.

[0085] The comparison results between Comparative Examples 1-3 and Example 1 show that the pretreatment process of continuous fibers and the preparation process of ceramic slurry both affect the adhesive content and interfacial bonding strength of the prepreg tape product. Therefore, the pretreatment process and the preparation process of ceramic slurry are crucial to the product performance of continuous fiber reinforced ceramic composite prepreg tape.

[0086] This invention also provides an apparatus for preparing a method for continuous fiber reinforced ceramic composite prepreg tape. Figure 1 As shown, the device includes an unwinding device 100, a yarn spreading device 200, a light curing device 300, a composite roller device 400, and a winding device 500 arranged in sequence. The composite roller device 400 includes a heating element (not shown).

[0087] The continuous fiber 11 is unwound by the unwinding device 100, spread by the spreading device 200, and then enters the light curing device 300. After being combined and cured with ceramic slurry in the light curing device 300, it forms a continuous fiber reinforced ceramic composite material 12. The continuous fiber reinforced ceramic composite material 12 is then combined with the adhesive film 13 and the release paper 14 in sequence by the composite roller device 400, and then wound up by the winding device 500.

[0088] A first traction device 610 is provided between the unwinding device 100 and the spreading device 200; a second traction device 620 is provided between the light curing device 300 and the composite roller device 400; and a third traction device 630 is provided between the composite roller device 400 and the winding device 500. Each of the first traction device 610, the second traction device 620, and the third traction device 630 includes two traction rollers arranged vertically. It is understood that the number and position of the traction devices are not limited to this.

[0089] The photocuring apparatus 300 includes a ceramic slurry nozzle 310 and a curing laser head 320 arranged sequentially along the forward direction of the continuous fiber 11.

[0090] Figure 2 As shown, the composite roller device 400 includes a first multi-roller assembly 410, a film roller 420, and a second multi-roller assembly 430. The first multi-roller assembly is used to composite the continuous fiber reinforced ceramic composite material 12 with the film 13, and the second multi-roller assembly 430 is used to composite the continuous fiber reinforced ceramic composite prepreg tape 15 with the release paper 14.

[0091] Figure 3 As shown, the first multi-roller assembly 410 includes a first roller 411 and a second roller 412 arranged adjacent to each other, and a film roller 420 located on one side of the second roller 412. The first roller 411 is used to pull the continuous fiber reinforced ceramic composite material 12, and the second roller 412 is used to pull the film 13 on the film roller 420, and the continuous fiber reinforced ceramic composite material 12 and the film 13 are compounded by the first roller 411 and the second roller 412.

[0092] The second multi-roll assembly 430 includes a third roll 431 and a release paper roll 432. The release paper roll 432 is used to pull the release paper 14 on the film roll 420, and the third roll 431 is used to pull the continuous fiber reinforced ceramic composite prepreg tape 15 and to composite the continuous fiber reinforced ceramic composite prepreg tape 15 with the release paper 14.

[0093] In this embodiment, the first multi-roller assembly 410 further includes two first guide rollers 413 and a composite roller 414. The first guide rollers 413 are located above the first roller 411, and the two first guide rollers 413 and the first roller 411 form an inverted triangular structure. The second roller 412 and the composite roller 414 are located below the first roller 411, and the second roller 412, the composite roller 414 and the first roller 411 form an equilateral triangular structure. The continuous fiber reinforced ceramic composite material 12 and the adhesive film 13 are further composited through the first roller 411 and the composite roller 414. The heating assembly is located on the first roller 411. The first guide rollers 413, the second roller 412 and the composite roller 414 rotate in the same direction and are in the forward direction. The first roller 411 and the adhesive film roller 420 rotate in the same direction and are in the opposite direction.

[0094] The operation of the first multi-roller assembly 410 is as follows: the first guide roller 413 pulls the continuous fiber reinforced ceramic composite material 12 into the first roller 411, while the adhesive film 13 on the adhesive film roller 420 is pulled by the second roller 412. The continuous fiber reinforced ceramic composite material 12 and the adhesive film 13 are combined between the first roller 411 and the second roller 412. Since the first roller 411 is equipped with a heating component, the adhesive film 13 is heated and melted into the continuous fiber reinforced ceramic composite material 12. It is further combined by the action of the composite roller 414 and the first roller 411 to form a continuous fiber reinforced ceramic composite prepreg tape 15. The continuous fiber reinforced ceramic composite prepreg tape 15 enters the second multi-roller assembly 430 under the traction of another first guide roller.

[0095] The second multi-roller assembly 430 also includes two second guide rollers 433, which are positioned above the third roller 431 and form an inverted triangular structure with the third roller 431. The second guide rollers 433 rotate in the forward direction, while the third roller 431 and the release paper roller 432 rotate in the opposite direction.

[0096] The operation of the second multi-roller assembly 430 is as follows: the second guide roller 433 pulls the continuous fiber reinforced ceramic composite prepreg tape 15 into the third roller 431, while the release paper 14 on the film roller 420 is pulled into the third roller 431 by the release paper roller 432. The continuous fiber reinforced ceramic composite prepreg tape 15 and the release paper 14 are combined on the third roller 431, and then pulled from the third traction device 630 by another second guide roller 433.

[0097] It is understandable that, in order to enable the operation of the above-mentioned equipment, a drive device is also included, and unless otherwise specified, the above-mentioned devices or structures are all common equipment on the market.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method of making a continuous fiber-reinforced ceramic composite prepreg tape, characterized by: The method comprises the following steps: (1) unwinding the continuous fibers, spreading the continuous fibers, and using a photocuring process to compound the spread continuous fibers with ceramic slurry to form continuous fiber reinforced ceramic composite materials; (2) compounding the continuous fiber reinforced ceramic composite materials with a film, heating to melt the film and immerse the film into the continuous fiber reinforced ceramic composite materials to form a continuous fiber reinforced ceramic composite material prepreg tape; (3) winding the continuous fiber reinforced ceramic composite material prepreg tape obtained in step (2) after compounding the continuous fiber reinforced ceramic composite material prepreg tape with release paper on one side; Before step (1), the method further comprises pretreatment of the continuous fibers, wherein the pretreatment comprises: immersing and pre-cleaning the continuous fibers with an alkaline solution A, immersing the cleaned continuous fibers in an alkaline solution B, and cleaning, drying after heat treatment to obtain the continuous fibers; The concentration of the alkaline solution A is 50-80wt%, and the concentration of the alkaline solution B is 60-85wt%; The heat treatment comprises: placing the continuous fibers immersed in the alkaline solution B in -50℃ and 60℃ in sequence and repeating multiple times; In step (1), the ceramic slurry comprises, by mass percentage, 40wt%-60wt% of 1000 mesh aluminum oxide, 10wt%-15wt% of 500 mesh aluminum oxide fiber powder, 10wt%-15wt% of liquid photosensitive resin, 10wt%-12wt% of dispersant, and 10wt%-18wt% of solvent; the dispersant is 40wt% sodium hydroxide solution, and the solvent is anhydrous ethanol. The preparation method of the ceramic slurry comprises: adding the aluminum oxide powder, the aluminum oxide fiber powder, and a first part of the solvent into a reaction kettle and stirring uniformly at a stirring rate of 100r / min for 5min; then adding the dispersant while stirring to flocculate and precipitate; then adding a second part of the solvent and continuing to stir for 6-8min at a stirring rate of 300r / min; after standing for 10min, adding a third part of the solvent and the liquid photosensitive resin, and continuing to stir for 10min at a stirring rate of 300r / min to obtain the ceramic slurry.

2. The method of making a continuous fiber-reinforced ceramic composite prepreg tape according to claim 1, wherein: The continuous fibers are at least one of carbon fibers, aluminum oxide fibers, and silicon carbide fibers.

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