Integrated preparation and coating device for fiber prepreg resin

Abstract

The utility model relates to the field of chemical equipment, in particular to a fiber prepreg resin integrated preparation coating device which comprises a reaction boiler, a control valve, an interlayer guide pipe and a coating mechanism, a servo motor I is arranged in the middle of the upper surface of the reaction boiler, and the output end of the servo motor I is connected with a stirring blade; a second servo motor is arranged at the top of the coating mechanism, and a brush plate is arranged at the bottom of the output end of the second servo motor. According to the utility model, the reaction boiler is used for preparing the required prepreg resin, the prepreg resin flows to the coating mechanism through the control valve and the interlayer guide pipe, and the fiber fabric is subjected to rotary coating, so that the problem that the state and the viscosity of the prepreg resin in the process from preparation to coating cannot be controlled by the existing device is solved, and the environmental pollution caused by using an organic solvent is avoided; and meanwhile, the problems of tedious operation, non-uniform coating and poor product performance stability caused by manual coating are solved.

Description

Technical Field

[0001] The utility model relates to the field of chemical equipment, in particular to a fiber pre-impregnated resin integrated preparation and coating device. Background Technique

[0002] Fiber pre-impregnated resin is an intermediate material for preparing prepregs, which is divided into thermoplastic resin and thermosetting resin. The thermosetting resin technology is mature and has stable performance. It is the mainstream matrix resin of prepregs at present and has been widely used in the aerospace field. The preparation of thermosetting prepregs is divided into wet method and dry method;

[0003] The wet method is also called the solution method. It dissolves the resin matrix in a solvent with a lower boiling point to form a solution with a specific concentration. Then, the fiber fabric is coated at a certain impregnation speed, and then the prepreg is dried in an oven to volatilize the solvent with a low boiling point to obtain the prepreg. The advantages of the wet method are simple equipment, convenient operation, and large versatility. The disadvantages of this method are that it is difficult to accurately control the ratio of the fiber fabric to the resin matrix, so it is not easy to achieve a uniform distribution of the resin matrix in the prepreg. In addition, the volatilization amount of the solvent is difficult to control and the volatilization will cause environmental pollution. Therefore, the wet method has been gradually phased out abroad. The dry method is also called the hot melt method. First, the resin is melted at a high temperature, and then the fiber fabric is impregnated in different ways to make the prepreg. The advantage of the dry method is that the resin content of the prepreg can be accurately controlled. Therefore, the product not only has a good surface appearance but also has a low porosity of the composite material made, avoiding stress concentration caused by voids. Therefore, we usually use the dry method to prepare prepregs. However, its disadvantages are that the equipment is relatively complex, the manufacturing process is cumbersome, and there are requirements for the melting point of the resin, which thus imposes certain limitations on resins with poor processability.

[0004] To solve the problems existing in the background technique, the utility model provides a fiber pre-impregnated resin integrated preparation and coating device using the dry method as the preparation method. Content of the Utility Model

[0005] To solve the above technical problems, the utility model provides a fiber pre-impregnated resin integrated preparation and coating device, including a reaction boiler, a control valve, a sandwich conduit, and a coating mechanism. A servo motor I is arranged in the middle of the upper surface of the reaction boiler, a feed port is arranged on the left side, and an exhaust port and a heat medium inlet are respectively arranged inside and outside the right side, which are respectively convenient for discharging the gas in the reaction pot and the reaction furnace. The output end of the servo motor I is connected to a stirring rod, and the stirring rod penetrates through the cover plate into the reaction pot. A heating pipe is arranged in the reaction furnace, and a temperature detector is arranged beside the heating pipe to facilitate temperature monitoring. A heat medium outlet is arranged at the bottom of the reaction furnace to facilitate the replacement of the heat medium;

[0006] Preferably, a temperature regulator and a time setter are provided at the bottom of the reaction furnace, which can set the required temperature and heat preservation time. A cover plate is provided on the upper surface of the reaction boiler to prevent impurities from entering. An observation window is provided on the surface of the reaction boiler for facilitating the observation of the internal situation of the reaction pot. Support legs are provided at the bottom of the reaction boiler, and support seats are provided at the bottoms of the support legs for facilitating the support of the reaction boiler.

[0007] Preferably, an inner pipe is connected to the bottom of the reaction pot, and a control valve is provided at the connection. A control end is provided outside the reaction boiler, and the control end is connected to the control valve. The provided control end controls the flow rate of the prepreg resin flowing out of the reaction pot through the control valve.

[0008] Preferably, the sandwich conduit connects the reaction boiler and the coating mechanism. The sandwich conduit is provided with an inner pipe and an outer pipe. The inner pipe connects the reaction pot and the buffer chamber, and the outer pipe connects the reaction furnace and the heat preservation layer. The prepreg resin flows from the reaction pot to the buffer chamber through the inner pipe, and the heat medium flows from the reaction furnace to the heat preservation layer through the outer pipe, so as to control the temperature of the prepreg resin from the preparation to the coating process.

[0009] Preferably, a second servo motor is provided in the middle of the upper surface of the coating mechanism, and the output end of the second servo motor is connected to a hollow rod, and the hollow rod penetrates through the buffer chamber.

[0010] Preferably, micropores are provided on the surface of the hollow rod, and the micropores are located in the buffer chamber. The prepreg resin flows from the buffer chamber into the hollow rod through the micropores, and a brush plate is provided at the bottom of the hollow rod.

[0011] Preferably, a storage chamber is provided at the top of the brush plate. The middle of the upper surface of the storage chamber is connected to the hollow rod, and a discharge hole is provided at the connection. The prepreg resin flows from the hollow rod into the storage chamber through the discharge hole, and a pinhole is provided at the bottom of the storage chamber. The prepreg resin flows from the storage chamber to the fiber fabric through the pinhole.

[0012] The technical effects and advantages of the present utility model:

[0013] The structure of the present utility model is reasonably arranged and convenient to use. The present utility model prepares the required prepreg resin through the reaction boiler, and through the control valve and the sandwich conduit, the prepreg resin flows to the coating mechanism for rotary coating of the fiber fabric, solving the problems that the existing device cannot control the state and viscosity of the prepreg resin from the preparation to the coating process, thus avoiding the environmental pollution caused by the use of organic solvents and the poor hygrothermal stability of the product. At the same time, it solves the problems of cumbersome operation, uneven coating, and poor product performance stability caused by manual coating. Description of the drawings

[0014] Figure 1 An isometric view of a fiber prepreg resin integrated preparation and coating device proposed by the present utility model.

[0015] Figure 2The front sectional view of the reaction boiler in a fiber pre-impregnated resin integrated preparation and coating device proposed by the present utility model;

[0016] Figure 3 The front sectional view of the coating mechanism in a fiber pre-impregnated resin integrated preparation and coating device proposed by the present utility model;

[0017] In the figure: 1. Reaction boiler; 2. Feed inlet; 3. Observation window; 4. Heat medium outlet; 5. Temperature regulator; 6. Support seat; 7. Support leg; 8. Time setter; 9. Control end; 10. Cover plate; 11. Servo motor 1; 12. Exhaust port; 13. Heat medium inlet; 14. Interlayer conduit; 15. Coating mechanism; 16. Servo motor 2; 17. Hollow rod; 18. Storage chamber; 19. Brush plate; 20. Reaction furnace; 21. Heating pipe; 22. Reaction pot; 23. Stirring rod; 24. Control valve; 25. Inner pipe; 26. Outer pipe; 27. Thermal insulation layer; 28. Buffer chamber; 29. Micro holes; 30. Discharge hole; 31. Pin holes. Specific embodiments

[0018] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present utility model are given for the purpose of illustration and description, and are not exhaustive or limit the present utility model to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present utility model, and enable those of ordinary skill in the art to understand the present utility model and thus design various embodiments with various modifications suitable for specific purposes.

[0019] Please refer to Figures 1 to 3 , in this embodiment, a fiber pre-impregnated resin integrated preparation and coating device is provided, including a reaction boiler 1, a control valve 24, an interlayer conduit 14 and a coating mechanism 15. A servo motor 1 is arranged in the middle of the upper surface of the reaction boiler 1, a feed inlet 2 is arranged on the left side, and an exhaust port 12 and a heat medium inlet 13 are respectively arranged inside and outside on the right side, which are respectively convenient for discharging the gas in the reaction pot 22 and the reaction furnace 20. The output end of the servo motor 1 is connected to a stirring rod 23, and the stirring rod 23 penetrates through the cover plate 10 to the inside of the reaction pot 22. A heating pipe 21 is arranged in the reaction furnace 20, and a temperature detector 33 is arranged beside the heating pipe 21 to facilitate temperature monitoring. A heat medium outlet 4 is arranged at the bottom of the reaction furnace 20 to facilitate the replacement of the heat medium. A temperature regulator 5 and a time setter 8 are arranged at the bottom of the reaction furnace 20, and the required temperature and heat preservation time can be set. An observation window 3 is arranged on the surface of the reaction boiler 1 to facilitate observing the internal situation of the reaction pot. Support legs 7 are arranged at the bottom of the reaction boiler 1, and a support seat 6 is arranged at the bottom of the support legs 7 to facilitate supporting the reaction boiler 1.

[0020] The bottom of the reaction kettle 22 is connected to the inner pipe 25, and a control valve 24 is provided at the connection. There is a control terminal 9 outside the reaction boiler 1, and the control terminal 9 is connected to the control valve 24. The provided control terminal 9 controls the flow rate of the prepreg resin flowing out of the reaction kettle 22 through the control valve 24.

[0021] The sandwich conduit 14 connects the reaction boiler 1 and the coating mechanism 15. The sandwich conduit 14 is provided with an inner pipe 25 and an outer pipe 26. The inner pipe 25 is connected to the reaction kettle 22 and the buffer chamber 28, and the outer pipe 26 is connected to the reaction furnace 20 and the heat preservation layer 27. The prepreg resin flows from the reaction kettle 22 to the buffer chamber 28 through the inner pipe 25, and the heat medium flows from the reaction furnace 20 to the heat preservation layer 27 through the outer pipe 26, so that the temperature of the prepreg resin from preparation to coating can be controlled.

[0022] In the middle of the upper surface of the coating mechanism 15, there is a second servo motor 16. The output end of the second servo motor 16 is connected to a hollow rod 17. The hollow rod 17 penetrates through the buffer chamber 28. Micropores 29 are provided on the surface of the hollow rod 17, and the micropores 29 are located in the buffer chamber 28. The prepreg resin flows from the buffer chamber 28 into the hollow rod 17 through the micropores 29. A storage chamber 18 is provided at the top of the brush plate 19. The middle of the upper surface of the storage chamber 18 is connected to the hollow rod 17, and a discharge hole 30 is provided at the connection. Needle holes 31 are provided at the bottom of the storage chamber 18. The prepreg resin flows from the hollow rod 17 into the storage chamber 18 through the discharge hole 30 and flows from the storage chamber 18 to the fiber fabric through the needle holes 31.

[0023] During specific operation, when the fiber prepreg resin integrated preparation and coating device works, the chemically prepared materials with various proportions are added into the reaction kettle 22 through the feed port 2, and the heat medium is injected into the reaction furnace 20 through the heat medium inlet 13. The temperature is controlled through the heating pipe 21 in the reaction furnace 20, and the chemically prepared materials are fully reacted through the first servo motor 11 and the stirring rod 23. After the prepreg resin in the reaction kettle 22 is prepared, the control valve 24 is opened through the control terminal 9, so that the prepreg resin flows from the reaction kettle 22 through the inner pipe 25 into the buffer chamber 28, then flows into the hollow rod 17 through the micropores 29, then flows into the storage chamber 18 through the discharge hole 30, and finally flows out through the needle holes 31. The fiber fabric is rotationally coated with the brush plate 19 to obtain the target prepreg.

[0024] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art and related fields without creative efforts shall fall within the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention, unless otherwise specified and limited, are implemented according to the conventional means in the art.

Claims

1. A fiber pre-impregnated resin integrated preparation and coating device, comprising a reaction boiler (1), a control valve (24), an interlayer conduit (14) and a coating mechanism (15), characterized in that: A servo motor (11) is arranged in the middle of the upper surface of the reaction boiler (1), a feed port (2) is arranged on the left side, an exhaust port (12) and a heat medium inlet (13) are arranged inside and outside the right side respectively, the output end of the servo motor (11) is connected to a stirring rod (23), the stirring rod (23) penetrates the cover plate (10) to the inside of the reaction pot (22), a heating pipe (21) is arranged in the reaction furnace (20), a temperature detector (33) is arranged next to the heating pipe (21), and a heat medium outlet (4) is arranged at the bottom of the reaction furnace (20).

2. The fiber pre-impregnation resin integrated preparation and coating device according to claim 1, characterized in that: The bottom of the reaction furnace (20) is provided with a temperature regulator (5) and a time setter (8); the upper surface of the reaction boiler (1) is provided with a cover plate (10), the surface is provided with an observation window (3), the bottom is provided with a support leg (7), and the bottom of the support leg (7) is provided with a support seat (6).

3. The fiber pre-impregnation resin integrated preparation and coating device according to claim 1, characterized in that: The bottom of the reaction pot (22) is connected to an inner tube (25), a control valve (24) is provided at the connection, and a control end (9) is provided outside the reaction boiler (1), and the control end (9) is connected to the control valve (24).

4. The fiber pre-impregnation resin integrated preparation and coating device according to claim 1, characterized in that: The sandwich conduit (14) connects the reaction boiler (1) and the coating mechanism (15). The sandwich conduit (14) is provided with an inner tube (25) and an outer tube (26). The inner tube (25) connects the reaction pot (22) and the buffer chamber (28), and the outer tube (26) connects the reaction furnace (20) and the insulation layer (27).

5. The fiber pre-impregnation resin integrated preparation and coating device according to claim 4, characterized in that: A servo motor 2 (16) is provided in the middle of the upper surface of the coating mechanism (15), the output end of the servo motor 2 (16) is connected to a hollow rod (17), and the hollow rod (17) passes through the buffer cavity (28).

6. The fiber pre-impregnation resin integrated preparation and coating device according to claim 5, characterized in that: The surface of the hollow rod (17) is provided with micropores (29), the micropores (29) are located in the buffer cavity (28), and a brush plate (19) is provided at the bottom of the hollow rod (17).

7. The fiber pre-impregnation resin integrated preparation and coating device according to claim 6, characterized in that: A storage chamber (18) is provided on the top of the brush plate (19); the middle of the upper surface of the storage chamber (18) is connected to the hollow rod (17); a discharge hole (30) is provided at the connection; and a pinhole (31) is provided at the bottom of the storage chamber (18).

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