阅读说明：本技术 一种聚酰亚胺膜生产用反应装置 (Reaction unit is used in polyimide film production ) 是由 王文静 于 2019-08-13 设计创作，主要内容包括：本发明涉及聚酰亚胺生产设备技术领域,具体涉及一种聚酰亚胺膜生产用反应装置,包括反应釜体、釜体盖和支撑架,反应釜体通过轴承与支撑架连接,反应釜体包括搅拌机构、冷凝器、散热风扇和排液机构,冷凝器设有循环螺旋管、循环蛇形管和温度传感器,散热风扇包括一号出风口、二号出风口和出风口盖,釜体盖与反应釜体法兰连接,釜体盖与支撑架套接,釜体盖包括固定盖和加料盖,支撑架包括支撑主架和支撑底板；加料盖提高原料二元酐的分散效率,防止局部温度过高影响反应效率；冷凝器通过循环螺旋管控制反应体系的温度,一号出风口的空气经循环蛇形管降温后,用于降低冷凝器自身的运转温度,提高冷凝介质利用率。(The invention relates to the technical field of polyimide production equipment, in particular to a reaction device for producing a polyimide film, which comprises a reaction kettle body, a kettle body cover and a support frame, wherein the reaction kettle body is connected with the support frame through a bearing; the feeding cover improves the dispersion efficiency of the raw material binary anhydride and prevents the reaction efficiency from being influenced by overhigh local temperature; the condenser controls the temperature of the reaction system through the circulating spiral pipe, and air at the air outlet I is cooled through the circulating coiled pipe and is used for reducing the running temperature of the condenser per se and improving the utilization rate of a condensing medium.)

1. A reaction device for producing a polyimide film comprises a reaction kettle body (1), a kettle body cover (2) and a support frame (3), and is characterized in that the reaction kettle body (1) is connected with the support frame (3) through a bearing, the reaction kettle body (1) comprises a stirring mechanism (11), a condenser (12), a heat dissipation fan (13) and a liquid drainage mechanism (14), the condenser (12) is provided with a circulating spiral pipe (121), a circulating coil pipe (122) and a temperature sensor (123), the heat dissipation fan (13) comprises a first air outlet (131), a second air outlet cover (132) and an air outlet cover (133), the first air outlet (131) is connected with the condenser (12), the air outlet (133) is in threaded connection with the second air outlet (132), the liquid drainage mechanism (14) comprises an inclined bottom surface, a liquid drainage port (141) and a liquid drainage cover (142), the liquid discharge cover (142) is in threaded connection with the liquid discharge port (141); the kettle body cover (2) is connected with the reaction kettle body (1) through a flange, the kettle body cover (2) is sleeved with the support frame (3), and the kettle body cover (2) comprises a fixed cover (21) and a feeding cover (22); the support frame (3) comprises a support main frame (31) and a support bottom plate (32), and the support bottom plate (32) is connected with the support main frame (31) in a sliding mode.

2. The reaction device for producing the polyimide film according to claim 1, wherein the support main frame (31) is provided with a brake block (311) and a brake channel (312), the length of the brake block (311) is greater than that of the brake channel (312), the vertical cross sections of the brake block (311) and the brake channel (312) are both square, the reaction kettle body (1) is provided with a connecting hole (15) matched with the brake block (311), and the brake block (311) is inserted into the connecting hole (15).

3. The reaction device for producing the polyimide film according to claim 1, wherein the stirring mechanism (11) comprises a stirring motor, a rotating shaft (111) and a stirring blade, an output end of the stirring motor is connected with the rotating shaft (111), and the stirring blade is fixedly connected with the rotating shaft (111).

4. The reaction device for producing the polyimide film according to claim 3, wherein the rotating shaft (111) is provided with a through hole, the feeding cap (22) comprises a first feeding bottle (221), a discharging cap (222), a moving rod (223) and a discharging pipe (224), the moving rod (223) is slidably connected with the first feeding bottle (221), the moving rod (223) is fixedly connected with the discharging cap (222), the discharging cap (222) is magnetically attracted with the first feeding bottle (221), and the outer diameter of the horizontal section of the discharging pipe (224) is smaller than the inner diameter of the horizontal section of the rotating shaft (111).

5. The reaction device for polyimide film production according to claim 4, wherein the discharge cap (222) is provided with an auxiliary rod (2221), and the horizontal cross-sectional outer diameter of the auxiliary rod (2221) is smaller than the horizontal cross-sectional inner diameter of the discharge pipe (224).

6. The reaction device for producing the polyimide film according to claim 1, wherein the feeding cap (22) is rotatably sealed with the fixing cap (21), the feeding cap (22) comprises a rotating handle (225) and a feeding bottle II, the feeding bottle II comprises an opening and closing port (226), an opening and closing cap (227), an opening and closing piston (228) and an opening and closing plate (229), the opening and closing cap (227) and the opening and closing port (226) are attracted by magnetic force, and the opening and closing plate (229) is fixedly connected with the opening and closing piston (228).

Technical Field

The invention relates to the technical field of polyimide production equipment, in particular to a reaction device for producing a polyimide film.

Background

Since the sixties of the twentieth century, polyimide films have been widely used in various fields such as aerospace, nanotechnology, liquid crystal, electronic medical treatment, separation membranes, automobile manufacturing, laser, nuclear power and the like due to their excellent comprehensive properties, such as excellent structural diversity, high strength, high modulus, excellent heat resistance, mechanical properties, dielectric properties, film forming properties and radiation resistance, and are a focus of many researchers.

Polyimide is a high-molecular polymer material which is formed by condensation polymerization of diamine and dicarboxylic anhydride and contains imide rings in a main chain, wherein the most important thing in the polymer is a kind of polymer containing a phthalimide structure. The preparation method of the polyimide film (PI film) comprises the following steps: in a strong polar solvent, polyamide acid PAA is generated by condensation polymerization of diamine and dibasic anhydride and is cast to form a film, then the film is dehydrated and imidized at high temperature to form a high polymer film, and in order to obtain a PI film with stable molecular weight, the adding speed and temperature of the dibasic anhydride are required to be well controlled.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the reaction device for producing the polyimide film, which improves the uniform dispersion rate of raw materials, improves the utilization efficiency of a condenser and meets the reaction requirement of generating polyamic acid in the production process of the polyimide film.

In order to achieve the purpose, the invention is realized by the following technical scheme:

a reaction device for polyimide film production comprises a reaction kettle body, a kettle body cover and a support frame, wherein the reaction kettle body is connected with the support frame through a bearing, the reaction kettle body comprises a stirring mechanism, a condenser, a cooling fan and a liquid discharge mechanism, the condenser is provided with a circulating spiral pipe, a circulating coiled pipe and a temperature sensor, the cooling fan comprises a first air outlet, a second air outlet and an air outlet cover, the first air outlet is connected with the condenser, the air outlet cover is in threaded connection with the second air outlet, the liquid discharge mechanism comprises an inclined bottom surface, a liquid discharge port and a liquid discharge cover, and the liquid discharge cover is in threaded connection with the liquid discharge port; the kettle body cover is connected with the reaction kettle body through a flange, the kettle body cover is sleeved with the support frame, and the kettle body cover comprises a fixing cover and a feeding cover; the support frame comprises a support main frame and a support bottom plate, and the support bottom plate is connected with the support main frame in a sliding mode.

Further, the support body frame is equipped with brake block and braking hole, the vertical cross-section in brake block and braking hole all is square shape, the reation kettle body is equipped with the connecting hole with brake block matched with, the brake block is pegged graft with the connecting hole.

Further, rabbling mechanism includes agitator motor, rotation axis and stirring paddle leaf, agitator motor's output and rotation axis are connected, stirring paddle leaf and rotation axis fixed connection.

Further, the rotation axis is equipped with the through-hole, add the material lid including No. two feeding bottle, ejection of compact lid, carriage release lever and discharging pipe, carriage release lever and No. two feeding bottle sliding connection, carriage release lever and ejection of compact lid fixed connection, the ejection of compact lid is inhaled with No. two feeding bottle magnetic forces mutually, the horizontal cross-section external diameter of discharging pipe is less than the horizontal cross-section internal diameter of rotation axis.

Furthermore, the discharge cover is provided with an auxiliary rod, and the outer diameter of the horizontal section of the auxiliary rod is smaller than the inner diameter of the horizontal section of the discharge pipe.

Further, add the material lid and the fixed lid rotary seal, it includes twist grip and reinforced bottle No. one to add the material lid, reinforced bottle is including opening the mouth, opening and close the lid, open and close the piston and open and close the board, open and close the lid and open and close a magnetic force and inhale mutually, open and close the board and open and close piston fixed connection.

Further, the method is simple and convenient to operate.

Due to the adoption of the technical scheme, the invention has the following advantages:

1) rotating the kettle body cover to align the kettle body cover with the reaction kettle body, enabling the discharge pipe to coincide with a vertical central axis of the rotating shaft, moving the kettle body cover downwards to enable the kettle body cover to be attached to the reaction kettle body, inserting the discharge pipe into the rotating shaft, pouring the weighed binary anhydride into a first feeding bottle, sliding the moving rod upwards to enable the discharge cover to be separated from the first feeding bottle, enabling the binary anhydride to fall into the hollow rotating shaft from the discharge pipe and enter the reaction kettle body in a rotating mode from a plurality of through holes, improving the uniform dispersion rate of the binary anhydride, and preventing the phenomenon that the local temperature is too high due to the aggregation of the binary anhydride from affecting the reaction efficiency;

2) the condenser controls the temperature of the reaction system through the circulating spiral pipe, the condensing medium in the circulating spiral pipe flows to the circulating coil pipe, and the air at the first air outlet is cooled through the circulating coil pipe and is used for reducing the running temperature of the condenser, improving the utilization rate of the condensing medium, washing the inner wall of the reaction kettle body, closing the first air outlet, rotating the air outlet cover, opening the second air outlet and accelerating the drying of the inner wall of the reaction kettle body by the cooling fan;

3) when the brake block is inserted into the connecting hole, the reaction kettle body keeps the opening upward, the support bottom plate is slid to be separated from the reaction kettle body, and when the brake block exits from the connecting hole, the reaction kettle body can be turned over, so that the operation is convenient;

4) the stirring mechanism is arranged below the reaction kettle body, so that diamine is conveniently and uniformly dispersed in the reaction solvent, and the reaction requirement of generating polyamic acid in the production process of the polyimide film is met by adding the dicarboxylic anhydride in batches through the feeding disk.

Drawings

FIG. 1 is a connection block diagram of the control system of the present invention;

FIG. 2 is a schematic view showing the internal structure of a reaction vessel body and a vessel cover in example 1;

FIG. 3 is a schematic structural view of a vessel cover in example 2;

FIG. 4 is a left side view of the charging lid of FIG. 3;

the following are structural designations of the invention:

1-a reaction kettle body, 2-a kettle body cover, 3-a support frame, 11-a stirring mechanism, 12-a condenser, 13-a radiating fan, 14-a liquid discharging mechanism, 15-a connecting hole, 21-a fixed cover, 22-a feeding cover, 31-a supporting main frame, 32-a supporting bottom plate, 111-a rotating shaft, 121-a circulating spiral pipe, 122-a circulating coil pipe, 123-a temperature sensor, 131-a first air outlet, 132-a second air outlet, 133-an air outlet cover, 141-a liquid discharging port, 142-a liquid discharging cover, 221-a first feeding bottle, 222-a material discharging cover, 223-a moving rod, 224-a material discharging pipe, 225-a rotating handle, 226-an opening and closing port, 227-an opening and closing cover, 228-an opening and closing piston, 229-an opening and closing plate, 311-brake block, 312-brake channel, 2221-auxiliary lever.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 4, a reaction apparatus for producing a polyimide film includes a reaction kettle body 1, a kettle cover 2 and a support frame 3, the reaction kettle body 1 is connected to the support frame 3 through a bearing, the reaction kettle body 1 includes a stirring mechanism 11, a condenser 12, a heat dissipation fan 13 and a liquid discharge mechanism 14, the condenser 12 is provided with a circulation spiral pipe 121, a circulation coil 122 and a temperature sensor 123, the heat dissipation fan 13 includes a first air outlet 131, a second air outlet 132 and an air outlet cover 133, the first air outlet 131 is connected to the condenser 12, the air outlet cover 133 is in threaded connection with the second air outlet 132, the liquid discharge mechanism 14 includes an inclined bottom surface, a liquid discharge port 141 and a liquid discharge cover 142, and the liquid discharge cover 142 is in threaded connection with the liquid discharge port 141; the kettle cover 2 is connected with the reaction kettle body 1 through a flange, the kettle cover 2 is sleeved with the support frame 3, and the kettle cover 2 comprises a fixed cover 21 and a feeding cover 22; the support frame 3 comprises a support main frame 31 and a support bottom plate 32, and the support bottom plate 32 is connected with the support main frame 31 in a sliding manner. The method comprises the following steps of (1) enabling an opening of a reaction kettle body 1 to be upward, adding diamine and a reaction solvent into the reaction kettle body 1, rotating a kettle body cover 2 to enable the kettle body cover 2 to be aligned with the reaction kettle body 1, moving the kettle body cover 2 downwards to enable the kettle body cover 2 to be attached to the reaction kettle body 1, enabling a flange plate of the kettle body cover 2 to be tightly connected with a flange plate of the reaction kettle body 1 through a bolt, enabling the diamine to be uniformly dispersed in the reaction solvent through a stirring mechanism 11, slowly adding dibasic anhydride into the reaction kettle body 1 in batches through a feeding cover 22, controlling the temperature of a reaction system through a condenser 12, increasing the temperature of the reaction system after adding a first batch of dibasic anhydride, reducing the temperature of the reaction system to be below room temperature through a circulating spiral pipe 121, adding a second batch of dibasic anhydride, reducing the temperature of the reaction system to be below room temperature; the air at the first air outlet 131 is cooled by the circulating serpentine tube 122, and is used for reducing the operating temperature of the condenser 12; after the reaction is finished, the bolts for connecting the flange plates are dismounted, the kettle cover 2 is moved upwards, the kettle cover 2 is rotated around the support main frame 31, the support base plates 32 are slid towards the left side and the right side to be separated from the reaction kettle body 1, the reaction kettle body 1 is turned over, and the prepared polyamide acid PAA is poured out and transferred to a charging barrel of a casting machine for subsequent thermal imidization and film forming operation; continuously turning over the reaction kettle body 1 to enable the opening of the reaction kettle body to face upwards, rotating the liquid discharge cover 142 to enable the liquid discharge cover to be separated from the liquid discharge port 141, washing the inner wall of the reaction kettle body 1 with water, closing the first air outlet 131, rotating the air outlet cover 133, opening the second air outlet 132, and accelerating the drying of the inner wall of the reaction kettle body 1 by the cooling fan 13.

The supporting main frame 31 is provided with a brake block 311 and a brake channel 312, the length of the brake block 311 is greater than that of the brake channel 312, the vertical sections of the brake block 311 and the brake channel 312 are both square, the reaction kettle body 1 is provided with a connecting hole 15 matched with the brake block 311, and the brake block 311 is inserted into the connecting hole 15. When the brake block 311 is inserted into the connection hole 15, the reaction vessel body 1 is kept open upward, and when the brake block 311 is withdrawn from the connection hole 15, the reaction vessel body 1 can be turned over.

Wherein, rabbling mechanism 11 includes agitator motor, rotation axis 111 and stirring paddle leaf, and agitator motor's output is connected with rotation axis 111, and stirring paddle leaf and rotation axis 111 fixed connection, pivoted stirring paddle leaf make the reaction system dispersion even, and stirring paddle leaf can not touch circulation spiral pipe 121.

Wherein, rotation axis 111 is hollow structure, and the outer wall of rotation axis 111 is equipped with the through-hole, adds that material lid 22 includes reinforced bottle 221, ejection of compact lid 222, carriage release lever 223 and discharging pipe 224, and carriage release lever 223 and reinforced bottle 221 sliding connection No. one, carriage release lever 223 and ejection of compact lid 222 fixed connection, ejection of compact lid 222 and reinforced bottle 221 magnetic force attract mutually No. one, and the horizontal cross-section external diameter of discharging pipe 224 is less than the horizontal cross-section internal diameter of rotation axis 111. Rotatory kettle body lid 2 makes it align with the reation kettle body 1, discharging pipe 224 coincides with the vertical center pin of rotation axis 111, move kettle body lid 2 downwards and make it laminate with the reation kettle body 1, discharging pipe 224 inserts rotation axis 111, pour the first batch binary anhydride who weighs into feeding bottle 221 No. one, the movable rod 223 that slides upwards makes discharging lid 222 and feeding bottle 221 separate No. one, binary anhydride falls into hollow rotation axis 111 from discharging pipe 224, and rotatory entering reation kettle body 1 from many through-holes, improve the speed of binary anhydride homodisperse, prevent that the binary anhydride gathering from leading to the too high efficiency that influences the reaction of local temperature.

Wherein, the discharging cover 222 is provided with an auxiliary rod 2221, and the horizontal section outer diameter of the auxiliary rod 2221 is smaller than the horizontal section inner diameter of the discharging pipe 224. The auxiliary rod 2221 prevents the binary anhydride from blocking the outlet and unblocking the outlet.

Wherein, add material lid 22 and fixed lid 21 rotary seal, add material lid 22 and include twist grip 225 and No. two feeding bottle, No. two feeding bottle including opening and closing mouth 226, open and close lid 227, open and close piston 228 and open and close board 229, open and close lid 227 and opening and closing mouth 226 magnetic force attract each other, open and close board 229 and open and close piston 228 fixed connection. Pouring the weighed binary anhydride into a second feeding bottle, rotating the opening and closing piston 228, enabling a part of the binary anhydride to fall below the second feeding bottle, separating the opening and closing cover 227 from the opening and closing opening 226, and rotating the rotating handle 225.

The following are specific embodiments of the present invention: