Rapid preparation method of high-temperature co-fired ceramic tape casting slurry

Abstract

The invention relates to the technical field of electronic ceramic packaging shell materials, and discloses a rapid preparation method of high-temperature co-fired ceramic tape casting slurry, which comprises the following steps: S1, calculating 90-92% of a ceramic matrix formula and a slurry formula; s2, adding organic auxiliary materials and inorganic auxiliary materials into the stirring ball mill, and carrying out ball milling and mixing for 0.5-1 hour; and S3, A-type aluminum oxide accounting for 3 / 10 of the mass of the inorganic main material is put into the stirring ball mill, and stirring and mixing are conducted for 2-3 hours. The rapid preparation method of the high-temperature co-fired ceramic tape casting slurry comprises the following steps: calculating a formula, prefabricating glue, feeding and mixing auxiliary materials, feeding and mixing main materials for multiple times, testing and finely adjusting granularity, feeding and mixing glue, discharging and finely adjusting viscosity. Through determination of physical indexes of the powder, combination of feeding processes and fine adjustment of discharging performance, the powder in the slurry is tightly stacked and fully wrapped by glue, so that a slurry system which is high in solid content, good in fluidity and stable in particle suspension is obtained.

Description

Technical Field

[0001] The invention relates to the technical field of electronic ceramic packaging shell materials, in particular to a method for quickly preparing a high-temperature co-fired ceramic tape-casting slurry. Background Art

[0002] High Temperature Co-fired Ceramic (HTCC) generally refers to the use of alumina, zirconium oxide, aluminum nitride green ceramic tape as the base material, and the drilling and cavitation operations, and the metal slurry (metal is tungsten, molybdenum, manganese, platinum and other conductors) is filled and printed on the holes and the surface of the green ceramic tape, and different diaphragms are combined and laminated to form a three-dimensional interconnected structure, and then cut and sintered to form a highly integrated precision device. Conventional alumina high temperature co-fired ceramics are generally based on 90-92% alumina ceramic materials, matched with tungsten conductor materials.

[0003] The preparation of 90-92% alumina ceramic green tape is usually based on the slurry casting process. The green tape should have good toughness, less deformation, less cracking, less porcelain chips when punching and opening holes, and good printing adhesion. These properties are often perceived but not easy to be optimized and improved. These characteristics depend to a large extent on whether the preparation method of the casting slurry is scientific, reasonable and controllable.

[0004] There have been many studies on the formula (ratio of raw materials) of high-temperature co-fired ceramics in China, but most of them remain at the stage of fine-tuning the formula ratio, and there is little description of the preparation process. For example, patent CN 111138172 A only broadly describes the basic ratio and basic viscosity of the slurry preparation, but fails to explain the order of adding materials, the method of adding materials, and the mixing time. The toughness effect of the prepared slurry and the cast film cannot be guaranteed. Patent CN 110922172A can improve the porcelain-forming performance of the raw porcelain tape in the sintering link by optimizing and fine-tuning the auxiliary material formula, but fails to explain the logic of the slurry preparation process of the cast slurry, and the machinability of the raw porcelain tape prepared by it fails to show its advantages, so the yield rate in the processing process is unknown.

[0005] Therefore, we proposed a rapid preparation method for high-temperature co-fired ceramic tape casting slurry to solve the above problems. Summary of the invention

[0006] In view of the deficiencies of the prior art, the present invention provides a method for quickly preparing a high-temperature co-fired ceramic tape-casting slurry, which solves the problems mentioned in the background technology.

[0007] The technical solution adopted by the present invention to solve the technical problem is: a rapid preparation method of a high-temperature co-fired ceramic tape-casting slurry, the steps of which include:

[0008] S1: Calculate 90-92% ceramic matrix formula and slurry formula;

[0009] S2: Add organic and inorganic auxiliary materials into a stirring ball mill and mix them by ball milling for 0.5-1 hour;

[0010] S3: Add 3 / 10 of the mass of the inorganic main material, type A alumina, into the stirring ball mill and stir and mix for 2-3 hours;

[0011] S4: Add 3 / 10 of the mass of the inorganic main material, type B alumina, into the stirring ball mill and stir and mix for 2-3 hours;

[0012] S5: Add 3 / 10 of the mass of the inorganic main material, type C alumina, into the stirring ball mill and stir and mix for 2-3 hours;

[0013] S6: Test the particle size after stirring and mixing, and according to the median particle size index and particle size distribution requirements, select one of A, B, and C as the remaining 1 / 10 of the inorganic main material mass of alumina and add it to the stirring ball mill, stir and mix for 0.5 hours to make a primary slurry;

[0014] S7: Add the melted glue into the stirring ball mill, stir and mix for 3-4 hours, pump out the slurry with a diaphragm pump, vacuum it, control the viscosity to the required range, and form a secondary slurry, i.e., the final slurry;

[0015] The above-mentioned stirring and mixing equipment includes an equipment shell, the bottom end of the equipment shell is connected to the input end of the diaphragm pump, the top end of the equipment shell is fixedly connected to a conical feed pipe, the bottom end of the conical feed pipe is fixedly connected to a conical grinding pipe, the conical grinding tube is provided with a mixing and grinding structure, and the equipment shell is provided with a mixing structure.

[0016] Furthermore, the mixed grinding structure includes a conical disk, an annular hole, a trapezoidal lower hopper, a discharging structure, a through hole, a rotating motor, a connecting shaft, a conical cap, an annular grinding block, a connecting rod and a trapezoidal pushing block. The outer wall of the conical disk is fixedly connected to the inside of the equipment housing, an annular hole is provided on the upper surface of the conical disk, a trapezoidal lower hopper is fixedly connected to the bottom end of the inner part of the conical disk near the annular hole, a discharging structure is provided at the bottom end of the trapezoidal lower hopper, a through hole is provided at the top at the center of the conical disk, a rotating motor is fixedly installed at the bottom end of the conical disk, a connecting shaft is fixedly connected to the output end of the rotating motor, a conical cap is fixedly connected to the top end of the connecting shaft, a plurality of annular grinding blocks are fixedly connected to the outer wall of the conical cap, connecting rods are fixedly connected to the bottom of the left and right ends of the conical cap, and a trapezoidal pushing block is fixedly connected to the bottom end of the connecting rod.

[0017] Furthermore, the discharging structure includes a feed pipe, a material receiving box, a discharging pipe, an intermittent motor, a connecting sleeve and a T-shaped discharging plate. There are two feed pipes, and the top ends of the two feed pipes are fixedly connected to the left and right sides of the trapezoidal discharging hopper. A one-way valve is movably installed inside the feed pipe, and the bottom end of the feed pipe is fixedly connected to the material receiving box, and the bottom end of the material receiving box is fixedly connected to the discharging pipe, and a one-way valve is movably installed inside the discharging pipe. An intermittent motor is fixedly installed on the outer wall of the material receiving box, and the output end of the intermittent motor is rotatably connected to the inside of the material receiving box. The outer wall of the output end of the intermittent motor is fixedly connected to a connecting sleeve, and the outer wall of the connecting sleeve is fixedly connected to a plurality of T-shaped discharging plates arranged in a ring. A loading chamber is formed between adjacent T-shaped discharging plates, and the outer wall of one end of the T-shaped discharging plate contacts the inner wall of the material receiving box.

[0018] Furthermore, the mixing structure includes a mixing drum, a discharge pipe, a rotating shaft, a triangular plate, a fixed sleeve, a connecting plate, a scraper, a mixing rod, a mixing plate and a driving motor. There are two mixing drums, and the two mixing drums are located on the bottom outer wall of the discharge structure. One side outer walls of the two mixing drums are fixedly connected to the inner wall of the equipment shell. The bottom end of the mixing drum is fixedly connected to the discharge pipe, and a one-way valve is movably installed inside the discharge pipe. The mixing drum is rotatably connected to the rotating shaft inside, and a plurality of triangular plates arranged in a ring are fixedly connected to the bottom outer wall of the rotating shaft. The outer wall of the rotating shaft is fixedly connected to a fixed sleeve, and the outer wall of the fixed sleeve is fixedly connected to four connecting plates arranged in a ring. One end of the connecting plate is fixedly connected to a scraper, and three mixing rods are fixedly connected to the upper surface of the connecting plate, and a mixing plate is fixedly connected to the lower surface of the connecting plate. The top end of the rotating shaft is fixedly connected to the output end of the driving motor, and the driving motor is fixedly installed on the bottom outer wall of the trapezoidal lower hopper.

[0019] Furthermore, the interior of the conical cap is movably connected to the outer wall at the top of the center of the conical disk through a connecting shaft, the outer wall of the conical cap is movably connected to the interior of the conical grinding tube, and the interior of the trapezoidal lower hopper is movably connected to a trapezoidal pusher block.

[0020] Furthermore, the above specifically refers to 90-92% alumina high temperature co-fired ceramics, and the slurry components include four major parts: inorganic main material, inorganic auxiliary material, organic auxiliary material, and glue.

[0021] Furthermore, the 90 or 92 porcelain formula refers to a specific ratio of a ceramic matrix composed of 90-92% alumina as an inorganic main material and 8-10% inorganic auxiliary material;

[0022] The slurry formula refers to the specific ratio of slurry mixed with 50-80% ceramic matrix, 10-30% organic auxiliary material, and 10-20% glue. The first two mixed evenly is called primary slurry, and the three mixed evenly is called secondary slurry.

[0023] The type A alumina refers to high temperature calcined α alumina with a median particle size D50 of 3-4 μm.

[0024] Type B alumina refers to high temperature calcined α alumina with a median particle size D50 of 2-3 μm.

[0025] Type C alumina refers to high-temperature calcined α alumina with a median particle size D50 of 1-2 μm;

[0026] The median particle size D50 of the primary slurry is required to be 2.5-3.5 μm, and the particle size distribution Span value = D90-D10 / D50 = 2.0-30;

[0027] The viscosity index range is 4000-5000cps, and the control method is to use a vacuum pump to evacuate the volatile solvent.

[0028] Furthermore, the organic auxiliary materials are azeotropic solvents, dispersants, etc., the inorganic auxiliary materials are sintering aids such as calcium source, magnesium source, silicon source, chromium source, molybdenum source, etc., and the glue is a purchased product with a viscosity of 20000-30000cps, usually containing a binder, a plasticizer, and an organic solvent.

[0029] The beneficial effects of the present invention are:

[0030] 1. The rapid preparation method of the high-temperature co-fired ceramic tape-casting slurry includes formula calculation, prefabricated glue, auxiliary material feeding and mixing, main material feeding and mixing for multiple times, particle size test fine adjustment, glue feeding and mixing, discharging and viscosity fine adjustment; through the determination of the physical indicators of the powder, the combination of the feeding process, and the fine adjustment of the discharging performance, the powder in the slurry is densely stacked and fully wrapped by the glue, so as to obtain a slurry system with high solid content, good fluidity and stable particle suspension.

[0031] 2. The rapid preparation method of the high-temperature co-fired ceramic cast slurry, through the setting of the mixing and grinding structure, after the conical cap and the annular grinding block grind and mix the organic auxiliary material and the non-polar auxiliary material, the material enters the interior of the trapezoidal lower hopper, and then the two trapezoidal pushing blocks rotate to make the trapezoidal pushing blocks push the material inside the trapezoidal lower hopper. Since there are two feeding pipes inside the bottom end of the trapezoidal lower hopper, when the material is discharged from the trapezoidal lower hopper, the material is discharged in two parts, so that the material can be mixed more evenly; at the same time, when the next step of mixing is required, the amount of discharge can be controlled by the discharge structure, so that the discharge can be carried out in small quantities and multiple times, so that when the material is mixed, the material can be stirred and mixed faster in the same time and the mixing is more even.

[0032] 3. The rapid preparation method of the high-temperature co-fired ceramic casting slurry, through the setting of the mixing structure, when the scraper and the triangular plate are used to mix the inside of the mixing barrel and scrape off the material adhered to the inner wall of the mixing barrel, it can prevent the material from adhering to the inner wall of the mixing barrel for a long time, making it difficult to remove. This is simple to operate and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for describing the embodiments or in the prior art are briefly introduced below.

[0034] Figure 1 It is a schematic diagram of the structure of the present invention;

[0035] Figure 2 It is a partial cross-sectional view of the structure of the present invention;

[0036] Figure 3 It is a cross-sectional view of the structure of the present invention;

[0037] Figure 4 It is a partial cross-sectional view of the discharging structure of the present invention;

[0038] Figure 5 The present invention is a flow chart of a rapid preparation method of a high temperature co-fired ceramic tape casting slurry;

[0039] Figure 6 The slurry state is prepared by the present invention and the slurry state is prepared by the traditional method.

[0040] Explanation of the reference numerals in the accompanying drawings: 1. Equipment housing; 2. Diaphragm pump; 4. Conical feed pipe; 5. Conical grinding pipe; 6. Mixing and grinding structure; 61. Conical disk; 62. Annular hole; 63. Trapezoidal discharge hopper; 64. Discharge structure; 641. Feed pipe 1; 642. Receiving box; 643. Discharge pipe; 644. Intermittent motor; 645. Connecting sleeve; 646. T-type discharge plate; 65. Through hole; 66. Rotating motor; 67. Connecting shaft; 68. Conical cap; 69. Annular grinding block; 610. Connecting rod; 611. Trapezoidal pusher block; 7. Mixing structure; 71. Mixing barrel; 72. Discharge pipe; 73. Rotating shaft; 74. Triangular plate; 75. Fixed sleeve; 76. Connecting plate; 77. Scraper; 78. Mixing rod; 79. Mixing plate; 710. Driving motor. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0042] See also Figure 1-6 , a method for rapidly preparing a high temperature co-fired ceramic tape casting slurry, the steps comprising:

[0043] S1: Calculate 90-92% ceramic matrix formula and slurry formula;

[0044] S2: Add organic and inorganic auxiliary materials into a stirring ball mill and mix them by ball milling for 0.5-1 hour;

[0045] S3: Add 3 / 10 of the mass of the inorganic main material, type A alumina, into the stirring ball mill and stir and mix for 2-3 hours;

[0046] S4: Add 3 / 10 of the mass of the inorganic main material, type B alumina, into the stirring ball mill and stir and mix for 2-3 hours;

[0047] S5: Add 3 / 10 of the mass of the inorganic main material, type C alumina, into the stirring ball mill and stir and mix for 2-3 hours;

[0048] S6: Test the particle size after stirring and mixing, and according to the median particle size index and particle size distribution requirements, select one of A, B, and C as the remaining 1 / 10 of the inorganic main material mass of alumina and add it to the stirring ball mill, stir and mix for 0.5 hours to make a primary slurry;

[0049] S7: Add the melted glue into the stirring ball mill, stir and mix for 3-4 hours, pump out the slurry with a diaphragm pump, vacuum it, control the viscosity to the required range, and form a secondary slurry, i.e., the final slurry;

[0050] The stirring and mixing device comprises an equipment housing 1, the bottom end of the equipment housing 1 is connected to the input end of the diaphragm pump 2, the top of the equipment housing 1 is fixedly connected to a conical feed pipe 4, the bottom end of the conical feed pipe 4 is fixedly connected to a conical grinding pipe 5, the conical grinding pipe 5 is provided with a mixing and grinding structure 6, and the equipment housing 1 is provided with a mixing structure 7; through the setting of the mixing and grinding structure 6, after the organic auxiliary material and the non-polar auxiliary material are ground and mixed by the conical cap 68 and the annular grinding block 69, the material enters the interior of the trapezoidal lower hopper 63, and then passes through two trapezoidal pushers Block 611 rotates to make the trapezoidal pushing block 611 push the material inside the trapezoidal lower hopper 63. Since there are two feeding pipes 641 inside the bottom end of the trapezoidal lower hopper 63, when the material is discharged from the trapezoidal lower hopper 63, the material is discharged in two portions, so that the material can be mixed more evenly; at the same time, when the next step of mixing is required, the amount of discharge can be controlled by the discharge structure 64, so that the discharge can be carried out in small amounts and multiple times, so that when the material is mixed, the material can be stirred and mixed faster in the same time and the mixing is more even.

[0051] Reference Figure 2-4 As shown, the mixed grinding structure 6 includes a conical disk 61, an annular hole 62, a trapezoidal lower hopper 63, a discharging structure 64, a through hole 65, a rotating motor 66, a connecting shaft 67, a conical cap 68, an annular grinding block 69, a connecting rod 610 and a trapezoidal pushing block 611. The outer wall of the conical disk 61 is fixedly connected to the inside of the equipment housing 1. The upper surface of the conical disk 61 is provided with an annular hole 62. The bottom end of the conical disk 61 near the annular hole 62 is fixedly connected with a trapezoidal lower hopper 63. The bottom end of the trapezoidal lower hopper 63 is provided with a discharging structure 64. The center of the conical disk 61 is provided with a through hole 65. The bottom end of the conical disk 61 is fixedly installed with a rotating motor 66. The output end of the rotating motor 66 is fixedly connected with a connecting shaft 67. The top end of the connecting shaft 67 is fixedly connected with a conical cap 68. The outer wall of the conical cap 68 is fixedly connected with a plurality of annular grinding blocks 69. The left side of the conical cap 68 Connecting rods 610 are fixedly connected to the bottom of the right two ends, and trapezoidal pushing blocks 611 are fixedly connected to the bottom ends of the connecting rods 610; the organic auxiliary materials and the stepless auxiliary materials are poured into the interior of the conical grinding tube 5 through the conical feeding pipe 4, and then the rotating motor 66 is started. The rotating motor 66 drives the conical cap 68 and the annular grinding block 69 to rotate through the connecting shaft 67. While the conical cap 68 and the annular grinding block 69 rotate, the organic auxiliary materials and the stepless auxiliary materials are ground and mixed. The mixed materials enter the interior of the trapezoidal lower hopper 63, and then the conical cap 68 and the two trapezoidal pushing blocks 611 are driven to rotate through the connecting shaft 67, so that the trapezoidal pushing blocks 611 push the materials inside the trapezoidal lower hopper 63. Since there are two feeding pipes 641 inside the bottom end of the trapezoidal lower hopper 63, when the materials are discharged from the trapezoidal lower hopper 63, they are discharged in two portions, so that the materials can be mixed more evenly.

[0052] Reference Figure 2-4 As shown, the discharging structure 64 includes a feed pipe 641, a material receiving box 642, a discharging pipe 643, an intermittent motor 644, a connecting sleeve 645 and a T-shaped discharging plate 646. There are two feed pipes 641, and the top ends of the two feed pipes 641 are fixedly connected to the left and right sides of the trapezoidal discharging hopper 63. A one-way valve is movably installed inside the feed pipe 641. The bottom end of the feed pipe 641 is fixedly connected to the material receiving box 642. The bottom end of the material receiving box 642 is fixedly connected to the discharging pipe 643. The discharging pipe 643 is movably installed with a one-way valve. The outer wall of the material receiving box 642 is fixedly installed with an intermittent motor 644. The output end of the intermittent motor 644 is rotatably connected to the inside of the material receiving box 642. The outer wall of the output end of the intermittent motor 644 is fixedly connected to the connecting sleeve 645. The connecting sleeve 645 The outer wall of the mixing drum 71 is fixedly connected with a plurality of T-shaped blanking plates 646 arranged in a ring, and a loading chamber is formed between adjacent T-shaped blanking plates 646, and the outer wall of one end of the T-shaped blanking plate 646 contacts the inner wall of the receiving box 642; by opening the one-way valve on the feed pipe 641, the material passes through the feed pipe 641 and enters the loading chamber inside the receiving box 642, and then by starting the intermittent motor 644, the intermittent motor 644 drives the connecting sleeve 645 and the T-shaped blanking plate 646 to rotate intermittently through the output end, so that the material in the loading chamber passes through the one-way valve in the discharge pipe 643 to open the material. The material enters the interior of the mixing drum 71, so that the amount of discharge can be controlled, and the discharge can be carried out in small amounts and multiple times. In this way, when mixing the materials, the materials can be stirred and mixed faster and more evenly within the same time.

[0053] Reference Figure 2 , 3As shown, the mixing structure 7 includes a mixing drum 71, a discharge pipe 72, a rotating shaft 73, a triangular plate 74, a fixed sleeve 75, a connecting plate 76, a scraper 77, a mixing rod 78, a mixing plate 79 and a driving motor 710. There are two mixing drums 71, and the two mixing drums 71 are located on the bottom outer wall of the discharge structure 64. One side outer wall of the two mixing drums 71 is fixedly connected to the inner wall of the equipment housing 1. The bottom of the mixing drum 71 is fixedly connected to the discharge pipe 72, and a one-way valve is movably installed inside the discharge pipe 72. The interior of the mixing drum 71 is rotatably connected to the rotating shaft 73, and the bottom outer wall of the rotating shaft 73 is fixedly connected to a plurality of triangular plates 74 arranged in a ring. The outer wall of the rotating shaft 73 is fixedly connected to the fixing sleeve 75, and the outer wall of the fixing sleeve 75 is fixedly connected to four connecting plates 76 arranged in a ring. One end of the connecting plate 76 is fixedly connected to the scraper 77, the upper surface of the connecting plate 76 is fixedly connected to three mixing rods 78, and the lower surface of the connecting plate 76 is fixedly connected to a mixing plate 79, the top end of the rotating shaft 73 is fixedly connected to the output end of the driving motor 710, and the driving motor 710 is fixedly installed on the outer wall of the bottom end of the trapezoidal lower hopper 63; by starting the driving motor 710, the driving motor 710 drives the triangular plate 74, the connecting plate 76, the scraper 77, the mixing rod 78 and the mixing plate 79 to rotate through the rotating shaft 73, so that the triangular plate 74, the connecting plate 76, the scraper 77, the mixing rod 78 and the mixing plate 79 stir and mix the materials, and the mixed materials are opened by the one-way valve in the discharge pipe 72, so that the materials enter the bottom of the inner wall of the equipment housing 1 through the discharge pipe 72, and finally, by starting the diaphragm pump 2, the diaphragm pump 2 input end extracts the slurry at the bottom of the inner wall of the equipment housing 1; at the same time, when the scraper 77 and the triangular plate 74 are used to mix the inside of the mixing cylinder 71 and scrape off the materials adhered to the inner wall of the mixing cylinder 71, this can prevent the materials from adhering to the inner wall of the mixing cylinder 71 for a long time and being inconvenient to remove, so that the operation is simple and the use is convenient.

[0054] Reference Figure 2 , 3 As shown, the interior of the conical cap 68 is movably connected to the outer wall at the top of the center of the conical disk 61 through a connecting shaft 67, the outer wall of the conical cap 68 is movably connected to the interior of the conical grinding tube 5, and the interior of the trapezoidal lower hopper 63 is movably connected to a trapezoidal pusher block 611.

[0055] Specifically refers to 90-92% alumina high temperature co-fired ceramics. The slurry components include inorganic main materials, inorganic auxiliary materials, organic auxiliary materials and glue.

[0056] The 90 or 92 porcelain formula refers to the specific ratio of the ceramic matrix composed of 90-92% alumina as the inorganic main material and 8-10% inorganic auxiliary material;

[0057] The slurry formula refers to the specific ratio of 50-80% ceramic matrix, 10-30% organic auxiliary materials, and 10-20% glue mixed together. The first two mixed evenly is called primary slurry, and the three mixed evenly is called secondary slurry.

[0058] Type A alumina refers to high temperature calcined α alumina with a median particle size D50 of 3-4 μm.

[0059] Type B alumina refers to high temperature calcined α alumina with a median particle size D50 of 2-3 μm.

[0060] Type C alumina refers to high-temperature calcined α alumina with a median particle size D50 of 1-2 μm;

[0061] The median particle size D50 of the primary slurry is required to be 2.5-3.5 μm, and the particle size distribution Span value = D90-D10 / D50 = 2.0-30;

[0062] The viscosity index range is 4000-5000cps, and the control method is to use a vacuum pump to evacuate the volatile solvent.

[0063] Organic auxiliary materials include azeotropic solvents, dispersants, etc. Inorganic auxiliary materials include sintering aids such as calcium source, magnesium source, silicon source, chromium source, molybdenum source, etc. Glue is a purchased product with a viscosity of 20000-30000cps, and usually contains binders, plasticizers, and organic solvents.

[0064] When the high temperature co-fired ceramic casting slurry rapid preparation method is working, the organic auxiliary material and the non-polar auxiliary material are poured into the interior of the conical grinding tube 5 through the conical feeding tube 4, and then the rotating motor 66 is started. The rotating motor 66 drives the conical cap 68 and the annular grinding block 69 to rotate through the connecting shaft 67. The organic auxiliary material and the non-polar auxiliary material are ground and mixed while the conical cap 68 and the annular grinding block 69 rotate. The mixed materials enter the interior of the trapezoidal lower hopper 63, and then the conical cap 68 and the two trapezoidal pushing blocks 611 are driven to rotate through the connecting shaft 67, so that the trapezoidal pushing blocks 611 are driven to rotate. The material block 611 pushes the material inside the trapezoidal lower hopper 63. Since there are two feeding pipes 641 inside the bottom end of the trapezoidal lower hopper 63, when the material is discharged from the trapezoidal lower hopper 63, the material is discharged in two portions, so that the material can be mixed more evenly; then, by opening the one-way valve on the feeding pipe 641, the material passes through the feeding pipe 641 into the loading chamber inside the receiving box 642, and then by starting the intermittent motor 644, the intermittent motor 644 drives the connecting sleeve 645 and the T-shaped feeding plate 646 to rotate intermittently through the output end, so that the loading The material in the room is opened by the one-way valve in the discharge pipe 643, so that the material enters the interior of the mixing barrel 71, so that the amount of material discharged can be controlled, so that the material can be discharged in small quantities and multiple times, so that when the material is mixed, the material can be stirred and mixed faster and more evenly in the same time; then, the driving motor 710 is started, and the driving motor 710 drives the triangular plate 74, the connecting plate 76, the scraper 77, the mixing rod 78 and the mixing plate 79 to rotate through the rotating shaft 73, so that the triangular plate 74, the connecting plate 76, the scraper 77, the mixing rod 78 and the mixing plate 79 rotate, 78 and the mixing plate 79 stir and mix the materials, and the mixed materials are passed through the one-way valve in the discharge pipe 72 to allow the materials to enter the bottom of the inner wall of the equipment housing 1 through the discharge pipe 72, and finally the diaphragm pump 2 is started to allow the diaphragm pump 2 to extract the slurry at the bottom of the inner wall of the equipment housing 1 at its input end; at the same time, when the scraper 77 and the triangular plate 74 are used to mix the inside of the mixing cylinder 71 and scrape off the materials adhered to the inner wall of the mixing cylinder 71, this can prevent the materials from adhering to the inner wall of the mixing cylinder 71 for a long time and being difficult to remove, which is simple to operate and convenient to use.

[0065] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for rapidly preparing a high temperature co-fired ceramic tape casting slurry, the steps comprising: S1: Calculate 90-92% ceramic matrix formula and slurry formula; S2: Add organic and inorganic auxiliary materials into a stirring ball mill and mix them by ball milling for 0.5-1 hour; S3: Add 3 / 10 of the mass of the inorganic main material, type A alumina, into the stirring ball mill and stir and mix for 2-3 hours; S4: Add 3 / 10 of the mass of the inorganic main material, type B alumina, into the stirring ball mill and stir and mix for 2-3 hours; S5: Add 3 / 10 of the mass of the inorganic main material, type C alumina, into the stirring ball mill and stir and mix for 2-3 hours; S6: Test the particle size after stirring and mixing, and according to the median particle size index and particle size distribution requirements, select one of A, B, and C as the remaining 1 / 10 of the inorganic main material mass of alumina and add it to the stirring ball mill, stir and mix for 0.5 hours to make a primary slurry; S7: Add the melted glue into the stirring ball mill, stir and mix for 3-4 hours, pump out the slurry with a diaphragm pump, vacuum it, control the viscosity to the required range, and form a secondary slurry, i.e., the final slurry; The stirring and mixing device comprises a device housing (1), the bottom end of the device housing (1) is connected to the input end of a diaphragm pump (2), the top end of the device housing (1) is fixedly connected to a conical feed pipe (4), the bottom end of the conical feed pipe (4) is fixedly connected to a conical grinding pipe (5), the conical grinding pipe (5) is provided with a mixing and grinding structure (6), and the device housing (1) is provided with a mixing structure (7).

2. The method for rapidly preparing a high temperature co-fired ceramic tape casting slurry according to claim 1, characterized in that: The mixing and grinding structure (6) comprises a conical disk (61), an annular hole (62), a trapezoidal lower hopper (63), a discharging structure (64), a through hole (65), a rotating motor (66), a connecting shaft (67), a conical cap (68), an annular grinding block (69), a connecting rod (610) and a trapezoidal pushing block (611); the outer wall of the conical disk (61) is fixedly connected to the inside of the equipment housing (1); the upper surface of the conical disk (61) is provided with an annular hole (62); the inside of the conical disk (61) is fixedly connected to a trapezoidal lower hopper (63) near the bottom end of the annular hole (62); the trapezoidal lower hopper (611) is fixedly connected to the inner surface of the conical disk (61); A discharge structure (64) is provided at the bottom end of the conical disk (63), a through hole (65) is opened at the top of the center of the conical disk (61), a rotating motor (66) is fixedly installed at the bottom end of the conical disk (61), the output end of the rotating motor (66) is fixedly connected to a connecting shaft (67), the top end of the connecting shaft (67) is fixedly connected to a conical cap (68), the outer wall of the conical cap (68) is fixedly connected to a plurality of annular grinding blocks (69), the bottom of the left and right ends of the conical cap (68) are fixedly connected to connecting rods (610), and the bottom end of the connecting rod (610) is fixedly connected to a trapezoidal pushing block (611).

3. The rapid preparation method of a high temperature co-fired ceramic tape casting slurry according to claim 2, characterized in that: The discharging structure (64) comprises a feed pipe (641), a material receiving box (642), a discharging pipe (643), an intermittent motor (644), a connecting sleeve (645) and a T-shaped discharging plate (646). There are two feed pipes (641). The top ends of the two feed pipes (641) are fixedly connected to the inside of the left and right sides of the trapezoidal discharging hopper (63). A one-way valve is movably installed inside the feed pipe (641). The bottom end of the feed pipe (641) is fixedly connected to the material receiving box (642). The bottom end of the material receiving box (642) is fixedly connected to the discharging pipe (643). A one-way valve is movably installed inside the discharge pipe (643), an intermittent motor (644) is fixedly installed on the outer wall of the material receiving box (642), the output end of the intermittent motor (644) is rotatably connected to the inside of the material receiving box (642), the outer wall of the output end of the intermittent motor (644) is fixedly connected to a connecting sleeve (645), the outer wall of the connecting sleeve (645) is fixedly connected to a plurality of T-shaped blanking plates (646) arranged in a ring, a loading chamber is formed between adjacent T-shaped blanking plates (646), and the outer wall of one end of the T-shaped blanking plate (646) contacts the inner wall of the material receiving box (642).

4. The rapid preparation method of a high temperature co-fired ceramic tape casting slurry according to claim 1, characterized in that: The mixing structure (7) comprises a mixing cylinder (71), a discharge pipe (72), a rotating shaft (73), a triangular plate (74), a fixed sleeve (75), a connecting plate (76), a scraper (77), a mixing rod (78), a mixing plate (79) and a driving motor (710). There are two mixing cylinders (71), and the two mixing cylinders (71) are located on the outer wall of the bottom end of the discharge structure (64). One side outer wall of the two mixing cylinders (71) is fixedly connected to the inner wall of the device housing (1). The bottom end of the mixing cylinder (71) is fixedly connected to the discharge pipe (72). A one-way valve is movably installed inside the discharge pipe (72). The mixing cylinder (71) is rotatably connected to the rotating shaft. (73), the outer wall of the bottom end of the rotating shaft (73) is fixedly connected to a plurality of triangular plates (74) arranged in a ring, the outer wall of the rotating shaft (73) is fixedly connected to a fixing sleeve (75), the outer wall of the fixing sleeve (75) is fixedly connected to four connecting plates (76) arranged in a ring, one end of the connecting plate (76) is fixedly connected to a scraper (77), the upper surface of the connecting plate (76) is fixedly connected to three mixing rods (78), the lower surface of the connecting plate (76) is fixedly connected to a mixing plate (79), the top end of the rotating shaft (73) is fixedly connected to the output end of a driving motor (710), and the driving motor (710) is fixedly mounted on the outer wall of the bottom end of the trapezoidal lower hopper (63).

5. The method for rapidly preparing a high temperature co-fired ceramic tape casting slurry according to claim 2, characterized in that: The interior of the conical cap (68) is movably connected to the outer wall at the top of the center of the conical disk (61) via a connecting shaft (67), the outer wall of the conical cap (68) is movably connected to the interior of the conical grinding tube (5), and the interior of the trapezoidal lower hopper (63) is movably connected to a trapezoidal pusher block (611).

6. The method for rapidly preparing a high temperature co-fired ceramic tape casting slurry according to claim 1, characterized in that: The above specifically refers to 90-92% alumina high temperature co-fired ceramics, and the slurry components include four major parts: inorganic main material, inorganic auxiliary material, organic auxiliary material and glue.

7. The method for rapidly preparing a high temperature co-fired ceramic tape casting slurry according to claim 1, characterized in that: The 90 or 92 porcelain formula refers to a specific ratio of a ceramic matrix composed of 90-92% alumina as an inorganic main material and 8-10% inorganic auxiliary material; The slurry formula refers to the specific ratio of slurry mixed with 50-80% ceramic matrix, 10-30% organic auxiliary material, and 10-20% glue. The first two mixed evenly is called primary slurry, and the three mixed evenly is called secondary slurry. The type A alumina refers to high temperature calcined α alumina with a median particle size D50 of 3-4 μm. Type B alumina refers to high temperature calcined α alumina with a median particle size D50 of 2-3 μm. Type C alumina refers to high-temperature calcined α alumina with a median particle size D50 of 1-2 μm; The median particle size D50 of the primary slurry is required to be 2.5-3.5 μm, and the particle size distribution Span value = D90-D10 / D50 = 2.0-30; The viscosity index range is 4000-5000cps, and the control method is to use a vacuum pump to evacuate the volatile solvent.

8. The method for rapidly preparing a high temperature co-fired ceramic tape casting slurry according to claim 1, characterized in that: The organic auxiliary materials are azeotropic solvents, dispersants, etc., the inorganic auxiliary materials are sintering aids such as calcium source, magnesium source, silicon source, chromium source, molybdenum source, etc., the glue is a purchased product with a viscosity of 20000-30000cps, and usually contains a binder, a plasticizer, and an organic solvent.

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