Ceramic matrix composite material preparation equipment based on potassium titanate whiskers

Abstract

The invention discloses ceramic matrix composite material preparation equipment based on potassium titanate whiskers, and relates to the technical field of composite material preparation, the ceramic matrix composite material preparation equipment based on potassium titanate whiskers comprises a processing shell and a material distribution chamber, the outer side of the processing shell is connected with a sealing box door in a hinged mode, and the sealing box door is connected with the material distribution chamber in a hinged mode; the outer side of the sealing box door is connected with a visual window in a penetrating mode. The bottom end of the processing shell is connected with the output end of a vacuum pump in a penetrating mode, one side of the processing shell is connected with a material distribution cavity, a base is arranged under the processing shell, and a material mixing mechanism is arranged at the top end of the processing shell and conducts smashing treatment on materials. In the using process, the lower mold is transversely pushed through the electric cylinder, so that materials in the lower mold can be automatically injected, the accuracy in the material treatment process is ensured, the technical requirements for operators are greatly reduced, and the production cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of composite material preparation, and in particular to equipment for preparing ceramic-based composite materials based on potassium titanate whiskers. Background Art

[0002] Potassium titanate whiskers can withstand high temperatures of 1200°C, have high infrared reflectivity and extremely low thermal conductivity, and are excellent as thermal insulation materials. Potassium titanate whiskers are much cheaper than other ceramic whiskers, and their dispersion is improved after the whisker surface is treated. Aluminum-based composite materials reinforced with them have excellent machinability.

[0003] 1. According to the traditional polymer molding process, the composite material needs to be mixed and granulated with two or more plastics and additives through an extruder, and then the re-granulated composite material is packaged and transported. After the material is dried and other steps, it can be injection molded.

[0004] 2. The traditional composite material process from composite material mixing to injection molding has high costs in processing, packaging, transportation and other links, high energy consumption, and the composite material formula cannot be adjusted in time, and the application scenario is single;

[0005] 3. The problem with the prior art is that most of the existing heating and forming equipment for preparing composite materials have poor heating and forming effects, a high rate of defective products, and the quality of the formed composite materials is not very ideal. Therefore, it is necessary to provide a heating and forming equipment for preparing composite materials, which has good heating and forming effects and can improve the quality of the formed materials, which is conducive to long-term use. Summary of the invention

[0006] The object of the present invention is to provide a preparation device for a ceramic-based composite material based on potassium titanate whiskers to solve the above-mentioned defects caused by the prior art.

[0007] A ceramic-based composite material preparation device based on potassium titanate whiskers comprises a processing shell and a material distribution chamber, wherein the outer side of the processing shell is hingedly connected with a sealed box door, and the outer side of the sealed box door is penetrated and connected with a visual window;

[0008] A processing shell, the bottom of which is penetrated and connected with the output end of a vacuum pump, one side of the processing shell is connected with a material distribution chamber, a base is arranged directly below the processing shell, and a mixing mechanism is arranged at the top of the processing shell, and the mixing mechanism is used to crush the material, thereby facilitating the mixing and pre-processing of the material;

[0009] A processing shell is provided with a displacement mechanism inside, and the displacement mechanism displaces the mold laterally, thereby facilitating the filling of the mold with corresponding materials, thereby improving the degree of automation in the injection and shaping process of the materials, and a heating mechanism is provided directly above the displacement mechanism;

[0010] The heating mechanism is arranged inside the processing shell. The heating mechanism performs cyclic heating treatment on the material in the mold, so that the non-standard automatic hot melt machine with constant temperature hot pressing can simultaneously perform loading and unloading and hot melting actions. The process is coherent, efficient and convenient. The top end of the cloth chamber is connected to a solenoid valve, and the other end of the solenoid valve is connected to a conveying pipe.

[0011] Preferably, the mixing mechanism includes a processing tank body, a driving motor, a feeding pipe, a conveying cavity, a grinding disc, a grinding roller and a scraper sheet. The driving motor is arranged directly above the processing tank body, the output end of the driving motor is connected to a rotating shaft, the outer side of the rotating shaft is connected to a grinding disc, the bottom end of the grinding disc is annularly connected to a grinding roller, a scraper sheet is arranged between the grinding rollers, a conveying cavity is opened on one side of the interior of the processing tank body, and a feeding pipe is connected directly above the conveying cavity.

[0012] Preferably, the processing tank is connected to the top of the material distribution chamber via a conveying pipe provided on one side.

[0013] Preferably, the displacement mechanism includes an electric cylinder, a guide rail, a lower mold, a conveying roller, a displacement sensor and a shaping inner cavity. The electric cylinder is installed through one side of the processing shell, the output end of the electric cylinder is connected to the lower mold, a guide rail is arranged directly below the lower mold, the guide rail is installed inside the processing shell, conveying rollers are arranged at equal intervals on the outside of the guide rail, a displacement sensor is arranged at the top of the guide rail, and the output end of the displacement sensor is connected to the electric cylinder by an electric wire.

[0014] Preferably, conveying rollers arranged at equal intervals on the outer side of the guide rail are connected to the lower mold.

[0015] Preferably, the heating mechanism includes a cylinder, an upper mold seat, a module, an air supply hose, an air delivery steel pipe, fan blades and a rotating shaft, the top of the cylinder is connected to the top of the interior of the processing shell, the output end of the cylinder is connected to the upper mold seat, the interior of the upper mold seat is connected to the module, one side of the upper mold seat is connected to one end of the air supply hose, the other end of the air supply hose is connected to the air delivery steel pipe, the interior of the air delivery steel pipe is connected to an electric heating plate, the interior of the air delivery steel pipe is provided with fan blades, and the outer side of the fan blades is connected to the rotating shaft.

[0016] Preferably, the cylinder is connected to the top of the module through an upper mold base connected to the output end.

[0017] Preferably, the gas transmission steel pipe is connected to the outer side of the rotating shaft through the fan blades arranged inside.

[0018] Preferably, the other end of the conveying pipe is connected to the bottom end of the processing tank.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] 1. During use, the lower mold is pushed horizontally by the electric cylinder, so that the material in the lower mold can be automatically injected, thereby ensuring the accuracy of the material processing process, greatly reducing the technical requirements for operators and reducing production costs;

[0021] 2. The addition of whiskers changes the mechanical properties of alumina-based ceramic materials. The hardness, bending strength, fracture toughness, etc. have been improved to varying degrees. At the same time, with the increase of whisker content, the volume wear rate of the material decreases. Obviously, the introduction of whiskers improves the wear resistance of the material. When the content of added whiskers is about 10wt%, the comprehensive performance of the material is the best. Potassium titanate whiskers can be used in ceramic-based friction materials to improve the comprehensive performance of ceramic friction materials, so that ceramic-based friction materials can be more widely used.

[0022] 3. During use, the upper mold seat is released vertically by the cylinder, and the lower mold set on one side is pushed laterally by the electric cylinder set on one side, thereby displacing the lower mold, which is convenient for automatic injection processing of the lower mold, and the lower mold is set in parallel with the upper mold to meet the vertical temperature and pressure processing of different types of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0024] Figure 2 It is a schematic diagram of the internal structure of the integrally processed shell of the present invention.

[0025] Figure 3 It is a schematic diagram of the lower mold displacement structure in the present invention.

[0026] Figure 4 It is a schematic diagram of the lowering structure of the upper mold base in the present invention.

[0027] Figure 5 It is a schematic diagram of the structure of the guide rail itself in the present invention.

[0028] Figure 6 It is a schematic diagram of the structure of the gas transmission steel pipe itself in the present invention.

[0029] Figure 7 It is a schematic diagram of the structure of the processing tank body itself in the present invention.

[0030] Figure 8 It is a schematic diagram of the structure of the grinding disc itself in the present invention.

[0031] in:

[0032] 1. Processing shell; 2. Visual window;

[0033] 3. Mixing mechanism; 31. Processing tank; 32. Driving motor; 33. Feed pipe; 34. Conveying cavity; 35. Grinding disc; 36. Grinding roller; 37. Scraping blade;

[0034] 4. Vacuum pump; 5. Sealed box door;

[0035] 6. Displacement mechanism; 61. Electric cylinder; 62. Guide rail; 63. Lower mold; 64. Conveying roller; 65. Displacement sensor; 66. Shaping inner cavity;

[0036] 7. Heating mechanism; 71. Cylinder; 72. Upper mold base; 73. Module; 74. Air supply hose; 75. Air supply steel pipe; 76. Fan blade; 77. Rotating shaft; 78. Electric heating plate;

[0037] 8. Fabric chamber; 9. Base; 10. Conveying pipe; 11. Solenoid valve. DETAILED DESCRIPTION

[0038] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0039] like Figures 1 to 8 As shown, the ceramic matrix composite material preparation equipment based on potassium titanate whiskers includes a processing shell 1 and a material distribution chamber 8, the outer side of the processing shell 1 is hingedly connected to a sealed box door 5, and the outer side of the sealed box door 5 is penetrated and connected to a visual window 2;

[0040] A processing shell 1, the bottom of which is penetrated and connected with the output end of a vacuum pump 4, one side of the processing shell 1 is connected with a material distribution chamber 8, a base 9 is arranged directly below the processing shell 1, and a mixing mechanism 3 is arranged at the top of the processing shell 1, and the mixing mechanism 3 is used to crush the material, thereby facilitating the mixing and pre-processing of the material;

[0041] The processing housing 1 is provided with a displacement mechanism 6 inside, and the displacement mechanism 6 performs lateral displacement of the mold, thereby facilitating the filling of the mold with corresponding materials, thereby improving the degree of automation in the injection and shaping process of the materials, and a heating mechanism 7 is provided directly above the displacement mechanism 6;

[0042] The heating mechanism 7 is arranged inside the processing shell 1. The heating mechanism 7 performs cyclic heating treatment on the material in the mold, so that the non-standard automatic hot melt machine with constant temperature hot pressing can simultaneously perform loading and unloading and hot melting actions. The process is coherent, efficient and convenient. The top end of the cloth chamber 8 is connected to the conveying pipe 10, and the other end of the conveying pipe 10 is connected to the solenoid valve 11.

[0043] In this embodiment, the mixing mechanism 3 includes a processing tank body 31, a driving motor 32, a feeding pipe 33, a conveying cavity 34, a grinding disc 35, a grinding roller 36 and a scraper 37. The driving motor 32 is arranged directly above the processing tank body 31, and the output end of the driving motor 32 is connected to the rotating shaft 77. The outer side of the rotating shaft 77 is connected to the grinding disc 35, and the bottom end of the grinding disc 35 is annularly connected to the grinding roller 36. A scraper 37 is arranged between the grinding rollers 36. A conveying cavity 34 is opened on one side of the interior of the processing tank body 31, and a feeding pipe 33 is connected directly above the conveying cavity 34. The processing is carried out after the feeding of the feeding pipe 33.

[0044] In this embodiment, the processing tank body 31 is connected to the top of the material distribution chamber 8 through the conveying pipe 10 provided on one side, and the material is transported through the conveying pipe 10 provided on one side of the processing tank body 31.

[0045] In this embodiment, the displacement mechanism 6 includes an electric cylinder 61, a guide rail 62, a lower mold 63, a conveying roller 64, a displacement sensor 65 and a shaping inner cavity 66. The electric cylinder 61 is installed through one side of the processing shell 1. The output end of the electric cylinder 61 is connected to the lower mold 63. A guide rail 62 is arranged directly below the lower mold 63. The guide rail 62 is installed inside the processing shell 1. Conveying rollers 64 are arranged at equal intervals on the outside of the guide rail 62. A displacement sensor 65 is arranged at the top of the guide rail 62. The output end of the displacement sensor 65 is connected to the electric cylinder 61 by an electric wire.

[0046] In this embodiment, the conveying rollers 64 arranged at equal intervals on the outer side of the guide rail 62 are connected to the lower mold 63, and the lower mold 63 is laterally displaced through the guide rail 62, and the lower mold 63 is automatically injected and then shaped.

[0047] In this embodiment, the heating mechanism 7 includes a cylinder 71, an upper mold base 72, a module 73, an air supply hose 74, an air supply steel pipe 75, a fan blade 76 and a rotating shaft 77. The top of the cylinder 71 is connected to the top of the inner part of the processing shell 1, and the output end of the cylinder 71 is connected to the upper mold base 72. The interior of the upper mold base 72 is connected to the module 73. One side of the upper mold base 72 is connected to one end of the air supply hose 74, and the other end of the air supply hose 74 is connected to the air supply steel pipe 75. The interior of the air supply steel pipe 75 is connected to an electric heating plate 78. The interior of the air supply steel pipe 75 is provided with a fan blade 76, and the outer side of the fan blade 76 is connected to a rotating shaft 77. The upper mold base 72 is vertically lifted and lowered by the cylinder 71, and the material is pressurized and shaped.

[0048] In this embodiment, the cylinder 71 is connected to the top of the module 73 through the upper mold base 72 connected to the output end, and the upper mold base 72 is driven by the cylinder 71 to perform vertical lifting and lowering, thereby performing heating and shaping treatment on the material.

[0049] In this embodiment, the air supply steel pipe 75 is connected to the outer side of the rotating shaft 77 through the fan blades 76 provided inside, and the external heated air is circulated and heated on the upper mold base 72 and the lower mold 63 through the fan blades 76.

[0050] In this embodiment, the other end of the conveying pipe 10 is connected to the bottom end of the processing tank 31, and the mixed material is sealed and injected through the conveying pipe 10 to improve the efficiency of material processing.

[0051] The practical application of this ceramic matrix composite material preparation equipment based on potassium titanate whiskers includes the following working processes:

[0052] Step 1: The operator first uses potassium tetratitanate whiskers as the main raw material, and the operator puts the material into the feeding pipe 33, and conveys the material through the conveying cavity 34 opened in the processing tank 31, and turns on the driving motor 32, and uses the driving motor 32 to drive the rotating shaft 77 to rotate, and uses the rotating shaft 77 to drive the grinding disc 35 and multiple groups of grinding rollers 36 to rotate, and uses the grinding rollers 36 to grind the material

[0053] Step 2: inject the silane coupling agent into the interior of the conveying cavity 34, and perform surface modification with the silane coupling agent; then use the modified potassium tetratitanate whisker, add deionized water to prepare a ceramic slurry, add a binder low-temperature glass powder, and then adjust the pH with a NaOH solution. The rotating shaft 77 drives the grinding disc 35 and multiple groups of grinding rollers 36 to rotate and stir at high speed, add short-chain amphiphilic molecules, stir at low speed, and stir at high speed to foam. When large bubbles begin to disappear, switch to low speed to stir to obtain uniform and delicate foam;

[0054] Step 3: During the high-speed rotation, the scraper blade 37 is used to scrape the inside of the processing tank 31 to prevent the material from adhering to the inside of the processing tank 31. At the same time, the rotating shaft 77 is used to drive the fan blade 76 to rotate. At the same time, the electric heating plate 78 is used to heat the air inhaled from the air pipe 75, and then the upper mold base 72 and the module 73 set at the bottom are heated. After the material is mixed and prepared, the electric cylinder 61 is opened and the electromagnetic valve 11 is used to directly inject the material into the lower mold 63.

[0055] Step 4: The electric cylinder 61 pushes one side of the lower mold 63, so that the lower mold 63 is pushed outside the conveying roller 64, and then the position of the lower mold 63 is switched, and the displacement sensor 65 is used to sense the position of the lower mold 63 pushed by the cylinder 71, and then the position of the lower mold 63 is sensed, and then the electric cylinder 61 is closed, and the solenoid valve 11 is opened, and the mixed material is injected into the shaping cavity 66 opened inside the lower mold 63 in the material dispensing chamber 8 by the conveying pipe 10, and then the lower mold 63 is reset by opening the electric cylinder 61;

[0056] Step 5: The operator turns on the cylinder 71, and uses the cylinder 71 to drive the upper mold base 72 and the module 73 to move vertically downward, so that the module 73 is inserted into the interior of the shaping cavity 66, and the material that has been injected into the shaping cavity 66 is shaped, and then the material is cyclically heated to make the material continuously high-pressure and shaped, and then the cylinder 71 drives the upper mold base 72 to rise vertically, thereby completing the shaping of the material, and then putting it into a high-temperature furnace, heating it from room temperature to 600°C at a rate of 2°C / min, and then heating it to 1100°C at a rate of 8°C / min, keeping it warm for 3 hours, and cooling it to room temperature with the furnace.

[0057] Therefore, the embodiments disclosed above are only illustrative in all aspects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. Equipment for preparing ceramic-based composite materials based on potassium titanate whiskers, characterized in that: It comprises a processing shell (1) and a material distributing chamber (8), wherein the outer side of the processing shell (1) is hingedly connected to a sealed box door (5), and the outer side of the sealed box door (5) is penetrated and connected to a visual window (2); A processing shell (1) is provided, the bottom end of which is penetrated and connected to the output end of a vacuum pump (4); one side of the processing shell (1) is connected to a material distribution chamber (8); a base (9) is provided directly below the processing shell (1); a mixing mechanism (3) is provided at the top end of the processing shell (1); the mixing mechanism (3) performs a crushing process on the material, thereby facilitating the mixing and pre-processing of the material; A processing shell (1) is provided with a displacement mechanism (6) inside thereof, wherein the displacement mechanism (6) performs a lateral displacement of the mold, thereby facilitating the filling of the mold with corresponding materials, thereby improving the degree of automation during the injection and shaping process of the materials, and a heating mechanism (7) is provided directly above the displacement mechanism (6); The heating mechanism (7) is arranged inside the processing shell (1). The heating mechanism (7) performs cyclic heating treatment on the material in the mold, so that the non-standard automatic hot melt machine with constant temperature hot pressing can easily perform loading and unloading and hot melting actions simultaneously, and the process is coherent, efficient and convenient. The top end of the material distribution chamber (8) is connected to a solenoid valve (11), and the other end of the solenoid valve (11) is connected to a conveying pipe (10).

2. The preparation equipment of ceramic matrix composite material based on potassium titanate whiskers according to claim 1, characterized in that: The mixing mechanism (3) comprises a processing tank body (31), a driving motor (32), a feeding pipe (33), a conveying cavity (34), a grinding disc (35), a grinding roller (36) and a scraper (37). The driving motor (32) is arranged directly above the processing tank body (31). The output end of the driving motor (32) is connected to a rotating shaft (77). The outer side of the rotating shaft (77) is connected to the grinding disc (35). The bottom end of the grinding disc (35) is connected to a grinding roller (36) in an annular shape. A scraper (37) is arranged between the grinding rollers (36). A conveying cavity (34) is opened on one side of the interior of the processing tank body (31). The feeding pipe (33) is connected directly above the conveying cavity (34).

3. The preparation equipment of ceramic matrix composite material based on potassium titanate whiskers according to claim 2, characterized in that: The processing tank body (31) is connected to the top end of the material distribution chamber (8) via a conveying pipe (10) arranged on one side.

4. The preparation equipment of ceramic matrix composite material based on potassium titanate whiskers according to claim 1, characterized in that: The displacement mechanism (6) comprises an electric cylinder (61), a guide rail (62), a lower mold (63), a conveying roller (64), a displacement sensor (65) and a shaping inner cavity (66); the electric cylinder (61) is installed through one side of the processing housing (1); the output end of the electric cylinder (61) is connected to the lower mold (63); a guide rail (62) is arranged directly below the lower mold (63); the guide rail (62) is installed inside the processing housing (1); conveying rollers (64) are arranged at equal intervals on the outer side of the guide rail (62); a displacement sensor (65) is arranged at the top end of the guide rail (62); and the output end of the displacement sensor (65) is connected to the electric cylinder (61) by an electric wire.

5. The preparation equipment of ceramic-based composite materials based on potassium titanate whiskers according to claim 4, characterized in that: Conveying rollers (64) arranged at equal intervals on the outer side of the guide rail (62) are connected to the lower mold (63).

6. The preparation equipment of ceramic matrix composite material based on potassium titanate whiskers according to claim 1, characterized in that: The heating mechanism (7) comprises a cylinder (71), an upper mold base (72), a module (73), an air supply hose (74), an air delivery steel pipe (75), a fan blade (76) and a rotating shaft (77); the top end of the cylinder (71) is connected to the top end of the processing shell (1); the output end of the cylinder (71) is connected to the upper mold base (72); the interior of the upper mold base (72) is connected to the module (73); one side of the upper mold base (72) is connected to one end of the air supply hose (74); the other end of the air supply hose (74) is connected to the air delivery steel pipe (75); the interior of the air delivery steel pipe (75) is connected to an electric heating plate (78); the interior of the air delivery steel pipe (75) is provided with a fan blade (76); the outer side of the fan blade (76) is connected to the rotating shaft (77).

7. The preparation equipment of ceramic matrix composite material based on potassium titanate whiskers according to claim 6, characterized in that: The cylinder (71) is connected to the top of the module (73) via an upper mold base (72) connected at the output end.

8. The preparation equipment of ceramic matrix composite material based on potassium titanate whiskers according to claim 6, characterized in that: The gas delivery steel pipe (75) is connected to the outer side of the rotating shaft (77) through the fan blades (76) arranged inside.

9. The preparation equipment of ceramic-based composite materials based on potassium titanate whiskers according to claim 1, characterized in that: The other end of the conveying pipe (10) is connected to the bottom end of the processing tank (31).

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