Pilot test amplification device for polyimide precursor resin synthesis

Abstract

The utility model discloses a pilot plant test amplification device for polyimide precursor resin synthesis. The pilot plant test amplification device comprises a mounting frame, a kettle body, a kettle cover, a stirring motor, a stirring paddle, a temperature probe sensor, a temperature data transmission wire, a temperature display screen, an alarm, a jacket and a high-low temperature all-in-one machine, the device can monitor the temperature in the kettle body all the time, the moderate reaction temperature is ensured, the product quality is improved, the temperature probe sensor is located at the bottom of the kettle body, the winding risk between the stirring paddle and the temperature probe sensor is reduced, and the use value is high.

Description

Technical Field

[0001] The utility model relates to the technical field of polyimide precursor resin pilot scale-up equipment, in particular to a polyimide precursor resin synthesis pilot scale-up device. Background Art

[0002] Polyimide is a key material in the field of advanced semiconductor packaging. The technical barriers to the synthesis of polyimide precursor resin are extremely high, and strict requirements are placed on the stability and safety of the synthesis reaction equipment.

[0003] The thermometer of the traditional polyimide precursor resin synthesis pilot scale-up device usually adopts a vertical rod type, that is, the thermometer rod runs from the lid of the kettle through the inner cavity of the kettle to the bottom of the kettle. When producing products with high viscosity, the thermometer rod will collide with the stirring paddle and become entangled, causing production accidents; and the synthesis of polyimide precursor resin has strict temperature requirements. Too high or too low temperature will cause the molecular weight of the resin to change. The temperature control of the traditional polyimide precursor resin synthesis pilot scale-up device is not good, which affects the product quality. Utility Model Content

[0004] The purpose of the utility model is to solve the problems raised in the above background technology, and then propose a polyimide precursor resin synthesis pilot scale-up device.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A polyimide precursor resin synthesis pilot scale-up device, comprising a mounting frame, a kettle body, a kettle cover, a stirring motor, a stirring paddle, a temperature probe sensor, a temperature data transmission line, a temperature display screen, an alarm, a jacket and a high and low temperature integrated machine;

[0007] A kettle body is arranged on the mounting frame, a discharge port is arranged at the lower part of the kettle body, and a discharge valve is installed at the discharge port; a kettle cover is arranged at the upper end of the kettle body, and a mechanical sealing port, a solid raw material feeding port, a liquid raw material feeding port, an air outlet and an air inlet are arranged on the kettle cover;

[0008] The mounting frame is also provided with a stirring motor, which is located above the kettle body. The stirring motor is connected to a stirring paddle through a universal joint, and the stirring paddle extends through a mechanical seal port to the inside of the kettle body.

[0009] A temperature probe sensor is provided at the bottom of the kettle body. The temperature probe sensor extends from the outside of the kettle body to the inner cavity of the kettle body. The temperature probe sensor is connected to a display screen and an alarm through a data transmission line.

[0010] A jacket is provided on the outer layer of the kettle body, a circulating liquid outlet is provided on the upper part of the jacket, and the circulating liquid outlet is connected to the inlet of the high and low temperature integrated machine through an outlet circulating pipeline. A circulating liquid inlet is provided on the lower part of the jacket, and the circulating liquid inlet is connected to the outlet of the high and low temperature integrated machine through an inlet circulating pipeline.

[0011] Furthermore, the kettle body and the jacket are made of glass, which allows the resin synthesis reaction process to be observed in all directions without blind spots, making it convenient for R&D and production personnel to grasp and adjust the process route in a timely manner.

[0012] Furthermore, the inner cavity of the kettle body is cylindrical, the lower part of the neck of the inner cavity of the kettle body is a conical contraction structure, the upper part is a columnar structure, and the top has an extended edge to facilitate the installation of the kettle cover and the fixation of the kettle body.

[0013] Furthermore, the lower part of the inner cavity of the kettle to the discharge port is a pot bottom structure to facilitate the discharge of all materials.

[0014] Furthermore, the stirring paddle is integrally formed so that there is no gap between the stirring paddle main shaft and the stirring paddle blades, which is convenient for cleaning after production without dead ends, thereby eliminating the risk of cross-mixing between different production batches or different production processes.

[0015] Furthermore, the stirring paddle is made of stainless steel and its surface is coated with polytetrafluoroethylene to increase its service life.

[0016] Furthermore, the kettle cover is made of glass and is in the shape of an inverted pot bottom.

[0017] Furthermore, a polytetrafluoroethylene cover with a buckle is provided at the solid raw material feeding port to prevent foreign impurities from entering the kettle body and affecting the production quality.

[0018] Furthermore, the liquid raw material feeding port is connected to a liquid feeding metering pump through a liquid conduit, and the liquid feeding metering pump is used to be connected to an external liquid source. The liquid feeding speed can be accurately controlled by the liquid feeding metering pump, which helps to better control the resin synthesis reaction process and stably control the resin molecular weight.

[0019] Furthermore, an air outlet valve is installed at the air outlet, and the air outlet valve is connected to an exhaust port or a condenser through an air outlet pipeline to discharge or collect toxic and harmful gases in time to ensure the health of production personnel.

[0020] Furthermore, an air intake valve is provided at the air inlet, and the air intake valve is connected to a nitrogen pipeline for conveying nitrogen, so that the air in the kettle can be discharged before production, thereby reducing the influence of air humidity on the production process.

[0021] Furthermore, universal wheels are installed at the bottom of the mounting frame, so that the working area of ​​the resin synthesis kettle can be flexibly adjusted according to production needs, saving a lot of manpower and material resources.

[0022] Furthermore, the mounting frame is a three-dimensional square structure, and the kettle body is fixed in the middle position of the mounting frame by a stainless steel ring and a stainless steel sleeve.

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] 1. In the utility model, there is no risk of entanglement between the stirring paddle and the temperature probe sensor, and the temperature inside the kettle body is controllable, which is convenient for real-time monitoring of the operating temperature inside the kettle body and improves the production quality.

[0025] 2. The stirring paddle in the utility model is integrally formed, so that there is no gap between the main shaft and the blades of the stirring paddle, which is convenient for cleaning in the later stage of production without dead angles, eliminates the risk of cross-mixing between different production batches or different production processes, eliminates the risk of damage to the polytetrafluoroethylene protective layer, and reduces the risk of excessive resin ion content. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] In the figure: 1. mounting frame; 11. universal wheel; 12. stainless steel ring; 13. stainless steel casing; 2. kettle body; 21. discharge port; 22. discharge valve; 3. kettle cover; 31. mechanical seal port; 32. solid raw material feeding port; 321. polytetrafluoroethylene cover; 33. liquid raw material feeding port; 331. liquid conduit; 332. liquid feeding metering pump; 34. air outlet; 341. air outlet valve; 342. air outlet pipeline; 35. air inlet; 351. air inlet valve; 352. nitrogen pipeline; 4. stirring motor; 41. universal joint; 42. stirring paddle; 5. temperature probe sensor; 51. temperature data transmission line; 52. temperature display screen; 53. alarm; 6. jacket; 61. circulating liquid outlet; 62. circulating liquid inlet; 63. outlet circulation pipeline; 64. inlet circulation pipeline; 65. high and low temperature integrated machine. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. The utility model is further described in combination with the drawings and embodiments:

[0029] Refer to the attached Figure 1 As shown, a polyimide precursor resin synthesis pilot scale-up device includes a mounting frame 1, a kettle body 2, a kettle cover 3, a stirring motor 4, a stirring paddle 42, a temperature probe sensor 5, a temperature data transmission line 51, a temperature display screen 52, an alarm 53, a jacket 6 and a high and low temperature integrated machine 65;

[0030] A kettle body 2 is arranged on the mounting frame 1, a discharge port 21 is arranged at the lower part of the kettle body 2, and a discharge valve 22 is installed at the discharge port 21; a kettle cover 3 is arranged at the upper end of the kettle body 2, and a mechanical sealing port 31, a solid raw material feeding port 32, a liquid raw material feeding port 33, an air outlet 34 and an air inlet 35 are arranged on the kettle cover 3;

[0031] The mounting frame 1 is also provided with a stirring motor 4, which is located above the kettle body 2. The stirring motor 4 is connected to a stirring paddle 42 via a universal joint 41, and the stirring paddle 42 extends through the mechanical sealing port 31 to the inside of the kettle body 2.

[0032] A temperature probe sensor 5 is provided at the bottom of the kettle body 2. The temperature probe sensor 5 extends from the outside of the kettle body 2 to the inner cavity of the kettle body 2. The temperature probe sensor 5 is connected to a display screen and an alarm 53 through a data transmission line. When in use, the alarm 53 sets the upper and lower temperature alarm lines, which can monitor and record the temperature in the kettle body 2 in real time. Compared with an ordinary rod-type thermometer, the temperature probe sensor 5 not only achieves the purpose of accurately detecting the temperature in the kettle, but also avoids the risk of entanglement between the stirring blade 42 and the thermometer, thereby greatly reducing the accident rate of pilot scale-up.

[0033] A jacket 6 is provided on the outer layer of the kettle body 2 so that a function of accommodating circulating liquid is formed therebetween. A circulating liquid outlet 61 is provided on the upper portion of the jacket 6, and the circulating liquid outlet 61 is connected to the inlet of a high and low temperature integrated machine 65 through an outlet circulating pipeline 63. A circulating liquid inlet 62 is provided on the lower portion of the jacket 6, and the circulating liquid inlet 62 is connected to the outlet of the high and low temperature integrated machine 65 through an inlet circulating pipeline 64. When in use, the high and low temperature integrated machine 65 has both heating and cooling functions, and can control the resin synthesis reaction temperature according to production needs to avoid changes in the resin molecular weight due to temperature fluctuations.

[0034] To further refine the above scheme, the kettle body 2 and the jacket 6 are made of glass, which can observe the progress of the resin synthesis reaction in all directions without blind spots, so that R&D and production personnel can grasp and adjust the process route in time; in addition, the main body of the inner cavity of the kettle body 2 is cylindrical, the lower part of the neck of the inner cavity of the kettle body 2 is a conical contraction structure, the upper part is a columnar structure, and the top has an extended edge, which is convenient for the installation of the kettle cover 3 and the fixation of the kettle body 2; then, in order to facilitate the discharge of all materials, the lower part of the inner cavity of the kettle body 2 to the discharge port 21 is a pot bottom type structure.

[0035] To further refine the above scheme, the stirring paddle 42 adopts one-piece molding technology, that is, there is no gap between the main shaft of the stirring paddle 42 and the blades of the stirring paddle 42, which is convenient for cleaning in the later stage of production without dead angles, eliminating the risk of cross-mixing between different production batches or different production processes; and the stirring paddle 42 is made of stainless steel and coated with polytetrafluoroethylene. The polytetrafluoroethylene coating has excellent corrosion resistance to acids, alkalis, etc., and no metal ions are introduced during the production process, ensuring the good insulation properties of the polyimide material.

[0036] The above scheme is further refined. The kettle cover 3 is made of glass and is in the shape of an inverted pot bottom. In addition, a polytetrafluoroethylene cover 321 with a buckle is provided at the solid raw material feeding port 32 to prevent external impurities from entering the kettle body 2 and affecting the production quality. In addition, the liquid raw material feeding port 33 is connected to a liquid feeding metering pump 332 through a liquid conduit 331. The liquid feeding metering pump 332 is used to be connected to an external liquid source. The liquid feeding speed can be accurately controlled by the liquid feeding metering pump 332, which helps to better control the resin synthesis reaction process and stably control the resin molecular weight. Then, an outlet valve 341 is installed at the air outlet 34. The outlet valve 341 is connected to an exhaust port or a condenser through an outlet pipeline 342 to discharge or collect toxic and harmful gases in time to ensure the health of production personnel. And an intake valve 351 is installed at the air inlet 35. The intake valve 351 is connected to a nitrogen pipeline 352 for conveying nitrogen, so that the air in the kettle body 2 can be discharged before production, reducing the influence of air humidity on the production process.

[0037] The above scheme is further refined. The mounting frame 1 is a three-dimensional square structure, and the kettle body 2 is fixed in the middle position of the mounting frame 1 by a stainless steel ring 12 and a stainless steel sleeve 13. In addition, a universal wheel 11 is installed at the bottom of the mounting frame 1, and the working area of ​​the resin synthesis kettle can be flexibly adjusted according to production needs, saving a lot of manpower and material resources.

[0038] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A polyimide precursor resin synthesis pilot scale-up device, characterized in that: It comprises a mounting frame (1), a kettle body (2), a kettle cover (3), a stirring motor (4), a stirring paddle (42), a temperature probe sensor (5), a temperature data transmission line (51), a temperature display screen (52), an alarm (53), a jacket (6) and a high and low temperature integrated machine (65); A kettle body (2) is arranged on the mounting frame (1), a discharge port (21) is arranged at the lower part of the kettle body (2), and a discharge valve (22) is installed at the discharge port (21); A kettle cover (3) is provided at the upper end of the kettle body (2), and the kettle cover (3) is provided with a mechanical sealing port (31), a solid raw material feeding port (32), a liquid raw material feeding port (33), an air outlet (34) and an air inlet (35); A stirring motor (4) is also provided on the mounting frame (1). The stirring motor (4) is located above the kettle body (2). The stirring motor (4) is connected to a stirring paddle (42) via a universal joint (41). The stirring paddle (42) passes through the mechanical sealing port (31) and extends into the interior of the kettle body (2). A temperature probe sensor (5) is provided at the bottom of the kettle body (2). The temperature probe sensor (5) extends from the outside of the kettle body (2) to the inner cavity of the kettle body (2). The temperature probe sensor (5) is connected to a display screen and an alarm (53) via a data transmission line. The outer layer of the kettle body (2) is provided with a jacket (6), the upper part of the jacket (6) is provided with a circulating liquid outlet (61), the circulating liquid outlet (61) is connected to the inlet of the high and low temperature integrated machine (65) through an outlet circulating pipeline (63), and the lower part of the jacket (6) is provided with a circulating liquid inlet (62), the circulating liquid inlet (62) is connected to the outlet of the high and low temperature integrated machine (65) through an inlet circulating pipeline (64).

2. The polyimide precursor resin synthesis pilot scale-up device according to claim 1, characterized in that: The kettle body (2) and the jacket (6) are made of glass.

3. The polyimide precursor resin synthesis pilot scale-up device according to claim 1, characterized in that: The inner cavity of the kettle body (2) is cylindrical, the lower part of the inner cavity neck of the kettle body (2) is a conical contraction structure, the upper part is a columnar structure, and the top has an extended edge.

4. The polyimide precursor resin synthesis pilot scale-up device according to claim 1, characterized in that: The stirring paddle (42) is integrally formed.

5. The polyimide precursor resin synthesis pilot scale-up device according to claim 1, characterized in that: A polytetrafluoroethylene cover (321) with a buckle is provided at the solid raw material feeding port (32).

6. The polyimide precursor resin synthesis pilot scale-up device according to claim 1, characterized in that: The liquid raw material feeding port (33) is connected to a liquid feeding metering pump (332) via a liquid conduit (331), and the liquid feeding metering pump (332) is used to be connected to an external liquid source to control the liquid feeding speed.

7. The polyimide precursor resin synthesis pilot scale-up device according to claim 1, characterized in that: An outlet valve (341) is installed at the outlet (34), and the outlet valve (341) is connected to an exhaust port or a condenser via an outlet pipeline (342) to timely discharge or collect toxic and harmful gases.

8. The polyimide precursor resin synthesis pilot scale-up device according to claim 1, characterized in that: The air inlet (35) is provided with an air inlet valve (351), and the air inlet valve (351) is connected to a nitrogen pipeline (352) for conveying nitrogen.

9. The polyimide precursor resin synthesis pilot scale-up device according to claim 1, characterized in that: The bottom of the mounting frame (1) is provided with universal wheels.

10. The polyimide precursor resin synthesis pilot scale-up device according to claim 1, characterized in that: The mounting frame (1) is a three-dimensional square structure, and the kettle body (2) is fixed at the middle position of the mounting frame (1) through a stainless steel ring (12) and a stainless steel sleeve (13).

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