Continuous extrusion equipment and method for low-dielectric heat-conducting silicon-based composite material

Abstract

The invention discloses continuous extrusion equipment and method for a low-dielectric heat-conducting silicon-based composite material, and relates to the technical field of extrusion equipment.The continuous extrusion equipment comprises a base, an extrusion equipment body is arranged at the top of the base, a stirring tank is fixedly installed at the top of the extrusion equipment body, and a top cover is fixedly installed at the top of the stirring tank; the top of the top cover is provided with an anti-blocking mechanism and a driving mechanism. Synchronous feeding is achieved through the two-way feeding hopper, meshing transmission of a half gear and a reciprocating piece along a sliding groove is matched to drive a lower pressing plate to push materials, and protection matching of a partition plate and a limiting plate is adopted, so that the situation that the materials are accumulated in the feeding frame and enter a transmission gap, and consequently parts are stuck can be avoided, smooth feeding is guaranteed, transmission is energy-saving, maintenance is easy, and production efficiency is improved. The transmission shaft is driven by the first motor, and through double transmission of the first synchronous wheel, the second synchronous wheel, the synchronous belt, the second gear and the third gear, anti-blocking pushing and mixing operation of stirring blades driven by the rotating shaft are synchronously achieved.

Description

Technical Field

[0001] This invention relates to the field of extrusion equipment technology, specifically to continuous extrusion equipment and methods for low dielectric thermal conductivity silicon-based composite materials. Background Technology

[0002] Low dielectric thermally conductive silicon-based composite materials are a key material used in advanced electronic fields such as 5G communication and high-frequency chip packaging. While ensuring excellent electrical insulation and low signal loss, they can also efficiently conduct heat. This material is made by filling low dielectric and high thermally conductive fillers such as boron nitride and modified alumina with silicone rubber as the matrix. Due to the high proportion of fillers and the difficulty of dispersion, it must be produced by continuous twin-screw extruder.

[0003] Existing extrusion equipment is not convenient for simultaneous and efficient feeding of multiple components of raw materials during use. It is easy for materials to accumulate and block at the feed inlet. In addition, it often uses multiple motors to drive the feeding and mixing mechanisms separately, resulting in high energy consumption.

[0004] Based on this, a continuous extrusion equipment and method for low dielectric thermal conductivity silicon-based composite materials are now provided, which can eliminate the drawbacks of existing equipment. Summary of the Invention

[0005] The purpose of this invention is to provide a continuous extrusion equipment and method for low dielectric thermal conductivity silicon-based composite materials, so as to solve the problem in the prior art that it is not easy to achieve simultaneous and efficient feeding of multi-component raw materials, and that materials are prone to accumulate and blockage at the feed inlet.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A continuous extrusion equipment for low dielectric thermal conductivity silicon-based composite materials includes a base, an extrusion equipment body is provided on the top of the base, a mixing tank is fixedly installed on the top of the extrusion equipment body, a top cover is fixedly installed on the top of the mixing tank, and an anti-blocking mechanism and a driving mechanism are respectively provided on the top of the top cover. The anti-blocking mechanism includes a feeding frame, which is fixedly installed on the top of the top cover. A sliding groove is provided on the inner wall of the feeding frame. A reciprocating component is slidably installed inside the feeding frame via the sliding groove. A half-gear is meshed inside the reciprocating component and is rotatably installed with the feeding frame via a bearing. A lower pressure plate is fixedly installed on one side of the reciprocating component by bolts. Two symmetrical mounting slots are provided inside the feeding frame. A buffer mechanism is provided inside each mounting slot. A partition is provided at the bottom of the buffer mechanism and is slidably installed with the feeding frame via the mounting slot. Limiting plates are fixedly installed on opposite sides of the two partitions, with the bottom of the limiting plates and the top of the lower pressure plate fitting together. Feed hoppers are fixedly installed on both outer sides of the feeding frame. One end of the half-gear passes through the feeding frame and is connected to a first synchronous pulley.

[0007] In one alternative embodiment: the driving mechanism includes a fixed plate, which is fixedly installed on the top of the top cover. A transmission shaft is rotatably mounted between the fixed plate and the feed frame via a bearing. A second synchronous pulley is externally keyed to the transmission shaft, and a synchronous belt is provided between the second synchronous pulley and the first synchronous pulley. A first motor is fixedly installed on the top of the top cover, and the transmission shaft is driven by the first motor.

[0008] In one alternative embodiment: the buffer mechanism includes a telescopic sleeve, which is fixedly installed inside the mounting groove. A telescopic rod is slidably installed inside the telescopic sleeve. A sealing gasket is provided at the top of the telescopic rod. A spring is provided inside the telescopic sleeve, with the bottom end of the spring connected to the sealing gasket and the top end connected to the telescopic sleeve. An air hole is provided on the outer wall of the telescopic sleeve. The bottom end of the telescopic rod is fixedly installed to the partition.

[0009] In one alternative: two extrusion rods are rotatably mounted inside the body of the extrusion equipment via bearings. One end of each of the two extrusion rods passes through the body of the extrusion equipment and is keyed to a first gear. The two first gears mesh with each other.

[0010] In one alternative: a second motor is fixedly mounted on the top of the base, wherein one of the first gears is driven by the second motor.

[0011] In one alternative: a third gear is rotatably mounted at the top center point of the top cover via a bearing, the bottom end of the third gear penetrates the top cover and is connected to a rotating shaft, and multiple stirring blades are provided on the outside of the rotating shaft.

[0012] In one alternative: a feed rod is provided at the bottom end of the rotating shaft, and the bottom end of the feed rod extends into the interior of the extrusion equipment body.

[0013] In one alternative: the drive shaft is externally keyed to a second gear, and the second gear meshes with a third gear.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention uses a dual-feed hopper for synchronous feeding, and the meshing transmission of the half gear and reciprocating parts along the slide groove drives the lower pressure plate to push the material. In addition, the protective cooperation of the partition plate and the limiting plate can prevent the material from accumulating in the feeding frame and entering the transmission gap, which would cause the parts to jam. This ensures smooth feeding, energy-saving transmission and easy maintenance. Relying on the first motor to drive the transmission shaft, through the dual transmission of the first synchronous pulley, the second synchronous pulley, the synchronous belt and the second gear and the third gear, the anti-blocking pushing and the mixing operation of the rotating shaft driving the stirring blade are realized simultaneously, reducing energy consumption and maintenance costs.

[0015] 2. This invention adopts a dual mode of premixing in a mixing tank and secondary mixing in the main body of the extrusion equipment. The main body of the extrusion equipment is heated to keep the material in a viscous flow state. Combined with the shearing and extrusion of the double extruders driven by the second motor and the first gear, the density and uniformity of the material are greatly improved, ensuring the consistency of the finished product performance and specifications. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 This is a schematic diagram of the extrusion rod mounting structure of the present invention.

[0018] Figure 3 This is a schematic diagram of the anti-blocking mechanism of the present invention.

[0019] Figure 4 This is a schematic diagram of the drive mechanism structure of the present invention.

[0020] Figure 5 This is a schematic diagram of the mounting structure of the lower pressure plate of the present invention.

[0021] Figure 6 This is a schematic diagram of the buffer mechanism structure of the present invention.

[0022] Figure reference numerals: 1. Base; 2. Main body of extrusion equipment; 3. Mixing tank; 4. Top cover; 5. Anti-blocking mechanism; 51. Feed frame; 52. Slide chute; 53. Reciprocating component; 54. Half gear; 55. Lower pressure plate; 56. Mounting groove; 57. Buffer mechanism; 571. Telescopic sleeve; 572. Telescopic rod; 573. Sealing gasket; 574. Spring; 575. Air hole; 58. Partition plate; 59. Limiting plate; 510. Feed hopper; 511. First synchronous pulley; 512. Second synchronous pulley; 513. Synchronous belt; 6. Drive mechanism; 61. Fixed plate; 62. Transmission shaft; 63. First motor; 7. Extrusion rod; 8. First gear; 9. Second motor; 10. Second gear; 11. Third gear; 12. Rotating shaft; 13. Mixing blade; 14. Feeding rod. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0024] In one embodiment, such as Figures 1-6As shown, a continuous extrusion equipment for low dielectric thermal conductivity silicon-based composite materials includes a base 1, an extrusion equipment body 2 on the top of the base 1, a mixing tank 3 fixedly mounted on the top of the extrusion equipment body 2, a top cover 4 fixedly mounted on the top of the mixing tank 3, and an anti-blocking mechanism 5 and a driving mechanism 6 respectively mounted on the top of the top cover 4. The anti-blocking mechanism 5 includes a feed frame 51, which is fixedly mounted on the top of the top cover 4. A groove 52 is formed on the inner wall of the feed frame 51, and a reciprocating component 53 is slidably mounted inside the feed frame 51 through the groove 52. A half gear 54 is meshed inside the reciprocating component 53, and the half gear 54 is connected to the feed through a bearing. The frame 51 is rotatably installed. A lower pressure plate 55 is fixedly installed on one side of the reciprocating component 53 by bolts. Two mounting slots 56 are symmetrically opened inside the feed frame 51. A buffer mechanism 57 is provided inside each of the two mounting slots 56. A partition plate 58 is provided at the bottom of the buffer mechanism 57. The partition plate 58 is slidably installed with the feed frame 51 through the mounting slots 56. A limit plate 59 is fixedly installed on the opposite side of each of the two partition plates 58. The bottom of the limit plate 59 is in contact with the top of the lower pressure plate 55. Feed hoppers 510 are fixedly installed on both sides of the outside of the feed frame 51. One end of the half gear 54 passes through the feed frame 51 and is connected to the first synchronous pulley 511.

[0025] In this embodiment, the feeding hopper 510 enables simultaneous dual-path feeding, improving feeding efficiency. The reciprocating component 53 slides along the slide groove 52 in conjunction with the half gear 54 for transmission, which drives the lower pressure plate 55 to move stably up and down, preventing material from accumulating and blocking in the feeding frame 51. The partition plate 58 and the limiting plate 59 work together with the lower pressure plate 55 to prevent material from entering the transmission gap and causing the component to jam, ensuring smooth feeding. The anti-blocking mechanism 5 and the drive mechanism 6 work together to achieve synchronous linkage of feeding and stirring, improving equipment operation coordination and production efficiency, and ensuring the stable continuous processing of low dielectric thermal conductivity silicon-based composite materials.

[0026] The drive mechanism 6 includes a fixed plate 61, which is fixedly installed on the top of the top cover 4. A drive shaft 62 is rotatably mounted between the fixed plate 61 and the feed frame 51 via a bearing. A second synchronous pulley 512 is keyed to the outside of the drive shaft 62, and a synchronous belt 513 is provided between the second synchronous pulley 512 and the first synchronous pulley 511. A first motor 63 is fixedly installed on the top of the top cover 4. The drive shaft 62 is driven by the first motor 63. The first motor 63 drives the drive shaft 62 to rotate. Through the transmission of the second synchronous pulley 512, the synchronous belt 513 and the first synchronous pulley 511, the power is accurately transmitted to the anti-blocking mechanism 5, and can also drive the stirring blade 13 to rotate. The single motor drive reduces the energy consumption and maintenance cost of the equipment.

[0027] The buffer mechanism 57 includes a telescopic sleeve 571, which is fixedly installed inside the mounting groove 56. A telescopic rod 572 is slidably installed inside the telescopic sleeve 571. A sealing gasket 573 is provided at the top of the telescopic rod 572. A spring 574 is provided inside the telescopic sleeve 571, with its bottom end connected to the sealing gasket 573 and its top end connected to the telescopic sleeve 571. An air hole 575 is provided on the outer wall of the telescopic sleeve 571. The bottom end of the telescopic rod 572 is fixedly installed with the partition plate 58. The telescopic sleeve 571 and the telescopic rod 572 cooperate to achieve telescopic buffering. The sealing gasket 573 ensures the internal sealing of the telescopic sleeve 571. The air hole 575 balances the internal air pressure during telescopic expansion and contraction. The spring 574 provides elastic support, ensuring that the partition plate 58 always fits against the lower pressure plate 55, thereby improving the stability of the mechanism.

[0028] Inside the main body 2 of the extrusion equipment, two extrusion rods 7 are rotatably mounted via bearings. One end of each of the two extrusion rods 7 passes through the main body 2 of the extrusion equipment and is keyed to a first gear 8. The two first gears 8 mesh with each other. A second motor 9 is fixedly mounted on the top of the base 1. One of the first gears 8 is driven by the second motor 9. The second motor 9 drives the two extrusion rods 7 to rotate synchronously in opposite directions through the meshing transmission of the first gear 8. After the main body 2 of the extrusion equipment is heated, the material is kept in a viscous flow state. Combined with the shearing and extrusion action of the extrusion rods 7, the material is mixed and continuously extruded, which improves the density and uniformity of the material and ensures the quality and specification consistency of the finished product.

[0029] A third gear 11 is rotatably mounted on the top center point of the top cover 4 via a bearing. The bottom end of the third gear 11 penetrates the top cover 4 and is connected to a rotating shaft 12. Multiple stirring blades 13 are arranged on the outside of the rotating shaft 12. A conveying rod 14 is arranged at the bottom end of the rotating shaft 12, and the bottom end of the conveying rod 14 extends into the interior of the extrusion equipment body 2. A second gear 10 is keyed to the outside of the transmission shaft 62, and the second gear 10 meshes with the third gear 11. The transmission shaft 62 drives the rotating shaft 12 and the stirring blades 13 to rotate through the meshing of the second gear 10 and the third gear 11, so as to achieve full mixing of materials and avoid uneven component distribution affecting product performance. The conveying rod 14 accurately pushes the mixed materials to the extrusion equipment body 2 to prevent material stagnation and accumulation and ensure continuous feeding.

[0030] The working principle of this invention is: Step 1: Pour the raw materials of each component of the low dielectric thermally conductive silicon-based composite material into the feed hopper 510 according to the proportion. The material enters the feed frame 51 through the feed hopper 510. Start the first motor 63, which drives the transmission shaft 62 to rotate. The transmission shaft 62 drives the external second synchronous wheel 512 and the second gear 10 to rotate. The second synchronous wheel 512 drives the first synchronous wheel 511 and the half gear 54 to rotate through the synchronous belt 513. The half gear 54 meshes with the reciprocating component 53, driving the reciprocating component 53 to slide up and down along the slide groove 52, thereby driving the lower pressure plate 55 to move up and down synchronously, continuously pushing the material in the feed frame 51 downward, thus preventing material blockage during the feeding process from the source; and the lower pressure plate 55... When plate 55 is pressed down, it will push limit plate 59 and partition plate 58 to move synchronously, so that partition plate 58 temporarily blocks the channel between feed hopper 510 and feed frame 51, preventing material from entering the transmission gap between reciprocating part 53 and half gear 54, and avoiding component jamming. At the same time, partition plate 58 drives telescopic rod 572 and sealing gasket 573 to slide inside telescopic sleeve 571. Due to the sealing effect of sealing gasket 573, the air inside telescopic sleeve 571 can only be discharged through air hole 575, forming a damping effect to ensure that partition plate 58 moves smoothly. Spring 574 always remains in a compressed state, continuously applying downward pressure to partition plate 58, so that limit plate 59 always fits tightly with pressure plate 55, ensuring the accuracy of channel blocking and opening. Step 2: While the transmission shaft 62 drives the second gear 10 to rotate, the second gear 10 meshes with the third gear 11, driving the third gear 11 and the rotating shaft 12 at the bottom to rotate. Multiple stirring blades 13 outside the rotating shaft 12 rotate synchronously, fully stirring and mixing the material falling from the feed frame 51 into the mixing tank 3, ensuring that the raw materials of each component are evenly dispersed. After the mixing is completed, the material is steadily and continuously conveyed into the body of the extrusion equipment 2 under the spiral pushing action of the conveying rod 14 at the bottom of the rotating shaft 12, ensuring the continuity of material supply for subsequent extrusion processes. Step 3: After confirming that the main body 2 of the extrusion equipment has been preheated to the preset process temperature and maintained stable, and after the material enters the main body 2 of the extrusion equipment stably, start the second motor 9. The second motor 9 drives one of the first gears 8 to rotate. Through the meshing transmission of the two first gears 8, the two extrusion rods 7 inside the main body 2 of the extrusion equipment rotate synchronously in opposite directions. Under the dual action of heating environment of the main body 2 of the extrusion equipment and shearing and compression of the two extrusion rods 7, the material completes secondary mixing, maintains a good viscous flow state to improve the density and uniformity of the material, and finally is continuously extruded through the discharge port of the main body 2 of the extrusion equipment to form a low dielectric thermal conductivity silicon-based composite material billet of the preset specifications. During the extrusion process, raw materials need to be continuously added to the feed hopper 510. At the same time, the temperature stability of the main body 2 of the extrusion equipment is monitored, and the material pushing, stirring and extrusion status are observed to ensure the coordinated operation of each mechanism. Step 4: After the raw materials have been fed in and no billet is discharged from the discharge port of the main body 2 of the extrusion equipment, first turn off the first motor 63 to stop feeding, stirring and conveying; after the material inside the main body 2 of the extrusion equipment is completely emptied, turn off the second motor 9, cut off the main power supply, and wait for the equipment to cool down to room temperature naturally.

[0031] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A continuous extrusion equipment for low dielectric thermal conductivity silicon-based composite materials, including a base (1), an extrusion equipment body (2) is provided on the top of the base (1), a mixing tank (3) is fixedly installed on the top of the extrusion equipment body (2), a top cover (4) is fixedly installed on the top of the mixing tank (3), and an anti-blocking mechanism (5) and a driving mechanism (6) are respectively provided on the top of the top cover (4). Its features are, The anti-blocking mechanism (5) includes a feed frame (51), which is fixedly installed on the top of the top cover (4). The inner wall of the feed frame (51) is provided with a sliding groove (52). A reciprocating component (53) is slidably installed inside the feed frame (51) through the sliding groove (52). A half gear (54) is meshed inside the reciprocating component (53), and the half gear (54) is rotatably installed with the feed frame (51) through a bearing. A lower pressure plate (55) is fixedly installed on one side of the reciprocating component (53) by bolts. Two mounting slots (56) are symmetrically opened inside the feed frame (51). Both of the mounting slots (56) are equipped with buffer mechanisms (57). The bottom of the buffer mechanism (57) is equipped with a partition (58), and the partition (58) is slidably installed with the feed frame (51) through the mounting slot (56). Limiting plates (59) are fixedly installed on opposite sides of the two partitions (58), and the bottom of the limiting plate (59) and the top of the lower pressure plate (55) are in contact with each other. Feed hoppers (510) are fixedly installed on both sides of the feed frame (51). One end of the half gear (54) passes through the feed frame (51) and is connected to the first synchronous wheel (511).

2. The continuous extrusion equipment for low dielectric thermal conductivity silicon-based composite materials according to claim 1, characterized in that, The drive mechanism (6) includes a fixed plate (61), which is fixedly installed on the top of the top cover (4). A drive shaft (62) is rotatably installed between the fixed plate (61) and the feed frame (51) via a bearing. A second synchronous pulley (512) is keyed to the outside of the drive shaft (62), and a synchronous belt (513) is provided between the second synchronous pulley (512) and the first synchronous pulley (511). A first motor (63) is fixedly installed on the top of the top cover (4), and the drive shaft (62) is driven by the first motor (63).

3. The continuous extrusion equipment for low dielectric thermal conductivity silicon-based composite materials according to claim 1, characterized in that, The buffer mechanism (57) includes a telescopic sleeve (571), which is fixedly installed inside the mounting groove (56). A telescopic rod (572) is slidably installed inside the telescopic sleeve (571). A sealing gasket (573) is provided at the top of the telescopic rod (572). A spring (574) is provided inside the telescopic sleeve (571). The bottom end of the spring (574) is connected to the sealing gasket (573), and the top end is connected to the telescopic sleeve (571). An air hole (575) is opened on the outer wall of the telescopic sleeve (571). The bottom end of the telescopic rod (572) is fixedly installed with the partition (58).

4. The continuous extrusion equipment for low dielectric thermal conductivity silicon-based composite materials according to claim 1, characterized in that, Inside the body (2) of the extrusion equipment, two extrusion rods (7) are rotatably mounted via bearings. One end of each of the two extrusion rods (7) passes through the body (2) of the extrusion equipment and is keyed to a first gear (8). The two first gears (8) mesh with each other.

5. The continuous extrusion equipment for low dielectric thermal conductivity silicon-based composite materials according to claim 4, characterized in that, A second motor (9) is fixedly mounted on the top of the base (1), and one of the first gears (8) is driven by the second motor (9).

6. The continuous extrusion equipment for low dielectric thermal conductivity silicon-based composite materials according to claim 2, characterized in that, A third gear (11) is rotatably mounted at the top center point of the top cover (4) via a bearing. The bottom end of the third gear (11) passes through the top cover (4) and is connected to a rotating shaft (12). Multiple stirring blades (13) are provided on the outside of the rotating shaft (12).

7. The continuous extrusion equipment for low dielectric thermal conductivity silicon-based composite materials according to claim 6, characterized in that, The bottom end of the rotating shaft (12) is provided with a feeding rod (14), and the bottom end of the feeding rod (14) extends into the interior of the extrusion equipment body (2).

8. The continuous extrusion equipment for low dielectric thermal conductivity silicon-based composite materials according to claim 7, characterized in that, The drive shaft (62) is externally keyed to a second gear (10), and the second gear (10) meshes with the third gear (11).

9. The method of using the continuous extrusion equipment for low dielectric thermal conductivity silicon-based composite materials according to claims 1-8, characterized in that, Includes the following steps: Step 1: Pour the raw materials of each component of the low dielectric thermally conductive silicon-based composite material into the feed hopper (510) according to the proportion. The material enters the feed frame (51) through the feed hopper (510). Start the first motor (63). The first motor (63) drives the transmission shaft (62) to rotate. The transmission shaft (62) drives the external second synchronous wheel (512) and the second gear (10) to rotate. The second synchronous wheel (512) drives the first synchronous wheel (511) and the half gear (54) to rotate through the synchronous belt (513). The half gear (54) meshes with the reciprocating part (53) to drive the reciprocating part (53) to slide up and down along the slide groove (52), thereby driving the lower pressure plate (55) to move up and down synchronously, continuously pushing the material in the feed frame (51) downward, thus avoiding material blockage during the feeding process from the root. The lower pressure plate (55) When pressed down, the limiting plate (59) and the partition (58) will move synchronously, so that the partition (58) will temporarily block the channel between the feed hopper (510) and the feed frame (51) to prevent the material from entering the transmission gap between the reciprocating part (53) and the half gear (54) and avoid the parts from jamming. At the same time, the partition (58) will drive the telescopic rod (572) and the sealing gasket (573) to slide inside the telescopic sleeve (571). Due to the sealing effect of the sealing gasket (573), the air inside the telescopic sleeve (571) can only be discharged through the air hole (575), forming a damping effect to ensure that the partition (58) moves smoothly. The spring (574) always remains in a compressed state and continuously applies downward pressure to the partition (58), so that the limiting plate (59) is always in close contact with the pressing plate (55) to ensure the accuracy of channel blocking and opening. Step 2: While the drive shaft (62) drives the second gear (10) to rotate, the second gear (10) meshes with the third gear (11) to drive the third gear (11) and the rotating shaft (12) at the bottom to rotate. Multiple stirring blades (13) outside the rotating shaft (12) rotate synchronously to fully stir and mix the material falling from the feed frame (51) into the mixing tank (3) to ensure that the raw materials of each component are evenly dispersed. After the mixing is completed, the material is steadily and continuously conveyed into the body of the extrusion equipment (2) under the spiral pushing action of the conveying rod (14) at the bottom of the rotating shaft (12) to ensure the continuity of material supply for subsequent extrusion processes. Step 3: After confirming that the main body (2) of the extrusion equipment has been preheated to the preset process temperature and kept stable, wait for the material to enter the main body (2) of the extrusion equipment and start the second motor (9). The second motor (9) drives one of the first gears (8) to rotate. Through the meshing transmission of the two first gears (8), the two extrusion rods (7) inside the main body (2) of the extrusion equipment rotate synchronously in opposite directions. The material completes secondary mixing under the heating environment of the main body (2) of the extrusion equipment and the shearing and compression of the two extrusion rods (7), maintaining a good viscous flow state to improve the density and uniformity of the material. Finally, it is continuously extruded through the outlet of the main body (2) of the extrusion equipment to form a low dielectric thermal conductivity silicon-based composite material billet of the preset specifications. During the extrusion process, raw materials need to be continuously added to the feed hopper (510). At the same time, the temperature stability of the main body (2) of the extrusion equipment is monitored, and the material pushing, stirring and extrusion status are observed to ensure the coordinated operation of each mechanism. Step 4: After the raw materials have been fed in and no blanks are discharged from the discharge port of the main body (2) of the extrusion equipment, first turn off the first motor (63) and stop feeding, stirring and conveying; after the materials inside the main body (2) of the extrusion equipment are completely emptied, turn off the second motor (9), cut off the main power supply, and wait for the equipment to cool down to room temperature naturally.

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