Preparation method of organic film removing liquid

Abstract

The invention is applicable to the technical field of membrane removing liquid, and provides a preparation method of an organic membrane removing liquid, which comprises the following steps: S1, stirring inorganic alkali, a surfactant, a chelating agent, alcohol amine, an alkyl quaternary ammonium salt corrosion inhibitor, a buffer agent, fatty amine and water in a stirring mechanism to obtain a mixed liquid; s2, filtering the mixed solution obtained in the step S1 in a filtering mechanism to obtain an organic membrane-removing solution; according to the stirring mechanism, the height, the left-right position and the transverse angle of the stirring device can be adjusted through the moving device in the stirring mechanism, so that the stirring device can be conveniently moved out of the first box body or the second box body, and a worker can conveniently clean the box bodies and components in the stirring device; and the organic film removing liquid can be continuously prepared, and the problem that the organic film removing liquid cannot be prepared due to the fact that the box body is cleaned is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of film stripping liquids, and in particular relates to a preparation method of an organic film stripping liquid. Background Art

[0002] Organic film strippers are chemical liquids used to remove dry film, primarily in electronics manufacturing and printed circuit board (PCB) fabrication. Dry film is a photoresist used to protect specific areas on the circuit board from etchants, thereby forming the desired circuit pattern during the manufacturing process. The main components of organic film strippers include organic solvents, sulfonic acid binders, organic bases, and corrosion inhibitors.

[0003] Chinese invention patent publication number CN115874184B discloses an organic film stripping solution and its preparation method. The organic film stripping solution is composed of the following components in thousandths by weight: 50-70‰ of an alcohol amine, 20-40‰ of an alkyl quaternary ammonium salt, 8-12‰ of a pH buffer, 2-4‰ of a fatty amine, 0.1-2‰ of an azole compound, 3-7‰ of a chelating agent, and the balance being water. The organic film stripping solution prepared with this composition not only achieves excellent dry film removal rates of 98.5-99.6% for high-precision circuit products, but also effectively meets the requirements of the MSAP process.

[0004] However, the above patent has the following shortcomings:

[0005] 1. Currently, most of the preparation of organic film stripping liquid is done by rotating a stirring shaft driven by a motor. The rotating stirring shaft drives multiple stirring rods on it to rotate, thereby completing the rapid preparation of the organic film stripping liquid. However, this preparation method is not convenient for cleaning the stirring shaft and stirring rods, and it is also not convenient for the staff to clean the box where the organic film stripping liquid raw materials are stored. Summary of the Invention

[0006] The present invention provides a method for preparing an organic film stripping liquid, aiming to solve the problem that the current method for preparing the organic film stripping liquid is inconvenient for cleaning the stirring shaft and the stirring rod, and is also inconvenient for staff to clean the box storing the organic film stripping liquid raw materials.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A method for preparing an organic film stripping solution, comprising:

[0009] Step S1, placing an inorganic base, a surfactant, a chelating agent, an alcohol amine, an alkyl quaternary ammonium salt corrosion inhibitor, a buffer, a fatty amine and water in a stirring mechanism and stirring to obtain a mixed solution;

[0010] Step S2: placing the mixed solution obtained in step S1 in a filtering mechanism for filtration to obtain an organic film removal solution.

[0011] Preferably, the stirring mechanism includes a base, a box body 1 is installed on the top of the base, a box body 2 is provided on one side of the box body 1, the box body 2 and the base are fixedly connected, a feeding device 1 and a feeding device 2 are respectively installed on the side walls of the box body 1 and the box body 2, a moving device is provided between the box body 1 and the box body 2, the moving device is connected to the base, a stirring device is installed on the moving device, and the stirring device is located in the box body 1; in this scheme, by providing the feeding device 1 and the feeding device 2, when the organic defilming liquid in the box body 1 is prepared, the cleaning liquid can be replenished into the box body 1 through the feeding device 1, and then clean water is poured into the box body 1 to soak and clean the stirring device. During this process, the staff can replenish raw materials into the box body 2, so that after the stirring device in the box body 1 is cleaned or the raw materials are replenished in the box body 2, the stirring device is directly transferred to the box body 2 for preparation and processing through the moving device, thereby achieving the purpose of continuously preparing the organic defilming liquid.

[0012] Preferably, the stirring device includes a support plate, the support plate is located at the top of the box body 1, the bottom of the support plate is provided with a stirring shaft 1, the stirring shaft 1 is rotatably connected to the support plate, a stirring shaft 2 is provided on one side of the stirring shaft 1, the stirring shaft 2 is rotatably connected to the support plate, and the stirring shaft 1 is transmission-connected to the stirring shaft 2; in this scheme, by setting the stirring shaft 1 and the stirring shaft 2, the dual-axis stirring method can greatly improve the mixing rate of the organic defilming liquid in the box.

[0013] Preferably, a plurality of stirring rods 1 are installed on the side wall of the stirring shaft 1, and a plurality of stirring rods 2 are installed on the side wall of the stirring shaft 2. The stirring rods 1 on the stirring shaft 1 and the stirring rods 2 on the stirring shaft 2 are staggered with each other; in this scheme, the staggered stirring shaft 1 and stirring shaft 2 can further increase the mixing rate of the organic defilming liquid in the box.

[0014] Preferably, the top of the support plate is provided with a transmission shaft 1 and a transmission shaft 2, and the transmission shaft 1 and the transmission shaft 2 are fixedly connected to the stirring shaft 1 and the stirring shaft 2 respectively, a driving wheel is sleeved on the side wall of the transmission shaft 1, and a driven wheel is sleeved on the side wall of the transmission shaft 2, a transmission belt is provided between the driving wheel and the driven wheel, the driving wheel and the driven wheel are connected through the transmission belt, and a motor 1 is installed on the top of the support plate, and the motor 1 is used to drive the transmission shaft 1 to rotate; in this scheme, by arranging the driving wheel, the driven wheel and the transmission belt, the driving wheel, the driven wheel and the transmission belt can enable the device to use only one motor 1 to drive the two transmission shafts to rotate. Compared with two motors driving the two transmission shafts to rotate respectively, the device can save the setting of one motor 1 and reduce the weight of the stirring device.

[0015] Preferably, the moving device includes a drive shell, which is located between the box body 1 and the box body 2, the drive shell and the base are fixedly connected, and the motor 2 is installed inside the drive shell, and a vertical plate is provided on one side of the motor 2, and the vertical plate is fixedly connected to the drive shell, and a threaded rod is provided on the side of the vertical plate away from the motor 2, one end of the threaded rod passes through the vertical plate and is fixedly connected to the output shaft of the motor 2, and the other end of the threaded rod is rotatably connected to the drive shell, and a nut is threaded on the side wall of the threaded rod, and the nut is slidably connected to the drive shell, and the nut is connected to the support plate; in this scheme, by providing motor 2, the motor 2 can drive the threaded rod to rotate, and the rotating threaded rod can make the nut move left and right in the drive shell, thereby adjusting the left and right position of the stirring device.

[0016] Preferably, a motor three is installed on the top of the nut, and a hydraulic cylinder is provided on the output shaft of the motor three, the hydraulic cylinder and the output shaft of the motor three are detachably connected, the output shaft of the hydraulic cylinder is fixedly connected to the support plate, and a guide block is installed at the bottom of the nut, and a guide rail is horizontally provided inside the guide block, one end of the guide rail is fixedly connected to the vertical plate, and the other end of the guide rail is fixedly connected to the drive shell; in this scheme, by providing a motor three, the motor three can drive the stirring device to rotate horizontally to adjust the horizontal angle of the stirring device; the hydraulic cylinder can drive the stirring device to rise to move the stirring device out of box body one or box body two; and the provision of the guide block and the guide rail can provide guidance for the lateral movement of the stirring device to avoid vertical displacement when it moves in the horizontal direction.

[0017] Preferably, the dosage delivery device includes a storage box, which is located on the side wall of the box body and fixedly connected to the box body, a pressure pump is installed on the side wall of the storage box, the liquid inlet of the pressure pump is connected to the storage box, the liquid outlet of the pressure pump is provided with a tube body, one end of the tube body is connected to the liquid outlet of the pressure pump, and the other end of the tube body is connected to the box body, and a valve body is installed on the side wall of the tube body.

[0018] Preferably, a liquid outlet pipe is provided on the side wall of the box body 1, one end of the liquid outlet pipe is communicated with the box body 1, and the other end of the liquid outlet pipe is installed with a valve body 2.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. By setting up a stirring mechanism, the stirring mechanism can adjust the height, left and right position, and lateral angle of the stirring device through the moving device therein, so that the stirring device can be easily moved out of box one or box two, thereby facilitating the staff to clean the box and the components inside the stirring device. In addition, this device can continuously prepare the organic film removal liquid through two boxes and two sets of agent feeding devices, thereby preventing the problem of being unable to prepare the organic film removal liquid due to the cleaning of the box. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a cross-sectional view of the box body 1 of the present invention;

[0024] Figure 3 for Figure 2 A magnified view of the result at point A on the support plate;

[0025] Figure 4 is a cross-sectional view of the drive housing of the present invention;

[0026] In the figure: 1. Base; 2. Box 1; 3. Box 2; 4. Dosage delivery device 1; 5. Dosage delivery device 2; 6. Moving device; 7. Stirring device; 8. Liquid outlet pipe; 9. Valve body 2;

[0027] 41. Reagent tank; 42. Pressure pump; 43. Tube body; 44. Valve body 1; 61. Drive housing; 62. Motor 2; 63. Vertical plate; 64. Threaded rod; 65. Nut; 66. Motor 3; 67. Hydraulic cylinder; 68. Guide block; 69. Guide rail; 71. Support plate; 72. Stirring shaft 1; 73. Stirring shaft 2; 74. Stirring rod 1; 75. Stirring rod 2; 76. Transmission shaft 1; 77. Transmission shaft 2; 78. Driving wheel; 79. Driven wheel; 80. Transmission belt; 81. Motor 1. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention.

[0030] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0033] See also Figure 1-4 , a method for preparing an organic film stripping solution, comprising:

[0034] Step S1, placing an inorganic base, a surfactant, a chelating agent, an alcohol amine, an alkyl quaternary ammonium salt corrosion inhibitor, a buffer, a fatty amine and water in a stirring mechanism and stirring to obtain a mixed solution;

[0035] Step S2: placing the mixed solution obtained in step S1 in a filtering mechanism for filtration to obtain an organic film removal solution.

[0036] Specifically, the addition of an inorganic base primarily dissolves and removes inorganic minerals and salts from the membrane surface during the film removal process. The addition of a surfactant enhances the film removal effect. The addition of a chelating agent removes impurities and improves film removal efficiency. The addition of an alcoholamine helps dissolve dry film. The addition of an alkyl quaternary ammonium salt corrosion inhibitor complements the surfactant to enhance the film removal effect. The addition of a buffer maintains a stable pH value, ensuring effective film removal. The addition of a fatty amine aids the film removal process.

[0037] Furthermore, the stirring mechanism includes a base 1, a box body 2 is installed on the top of the base 1, a box body 2 is provided on one side of the box body 2, the box body 2 3 is fixedly connected to the base 1, and a feeding device 1 4 and a feeding device 2 5 are respectively installed on the side walls of the box body 1 2 and the box body 2 3, a moving device 6 is provided between the box body 1 2 and the box body 2 3, the moving device 6 is connected to the base 1, a stirring device 7 is installed on the moving device 6, and the stirring device 7 is located in the box body 1 2.

[0038] Specifically, when the organic defilming liquid in box 1 2 is prepared and discharged from the liquid outlet pipe 8, the cleaning agent can be added into box 1 2 through the agent delivery device 1 4, and the cleaning liquid can be poured into box 1 2 at the same time, thereby completing the soaking and washing of box 1 2. During this process, the staff can add the raw materials for preparing the organic defilming liquid into box 2 3. When the raw materials are prepared, the cleaned stirring device 7 can be transferred to box 2 3 through the moving device 6, thereby preparing the raw materials in box 2 3. At this time, the waste liquid in box 1 2 can be discharged. In this way, the organic defilming liquid can be prepared continuously. Compared with only one box and preparing the organic defilming liquid after cleaning, this device can improve the production efficiency of the organic defilming liquid.

[0039] Furthermore, the stirring device 7 includes a support plate 71, which is located at the top of the box body 2. The bottom of the support plate 71 has a stirring shaft 72, and the stirring shaft 72 is rotatably connected to the support plate 71. A stirring shaft 2 73 is provided on one side of the stirring shaft 72, and the stirring shaft 2 73 is rotatably connected to the support plate 71. The stirring shaft 1 72 and the stirring shaft 2 73 are transmission-connected.

[0040] Specifically, the support plate 71 has two bearings inside, and the two bearings are used to respectively support the stirring shaft 1 72 and the stirring shaft 2 73 to rotate on the support plate 71 .

[0041] Furthermore, a plurality of stirring rods 1 74 are mounted on the side wall of the stirring shaft 1 72 , and a plurality of stirring rods 2 75 are mounted on the side wall of the stirring shaft 2 73 . The stirring rods 1 74 on the stirring shaft 1 72 and the stirring rods 2 75 on the stirring shaft 2 73 are arranged alternately.

[0042] Furthermore, the top of the support plate 71 has a transmission shaft 1 76 and a transmission shaft 2 77, which are fixedly connected to the stirring shaft 1 72 and the stirring shaft 2 73 respectively. A driving wheel 78 is mounted on the side wall of the transmission shaft 1 76, and a driven wheel 79 is mounted on the side wall of the transmission shaft 2 77. A transmission belt 80 is provided between the driving wheel 78 and the driven wheel 79. The driving wheel 78 and the driven wheel 79 are connected through the transmission belt 80. A motor 1 81 is installed on the top of the support plate 71, and the motor 1 81 is used to drive the transmission shaft 1 76 to rotate.

[0043] Furthermore, the mobile device 6 includes a drive shell 61, which is located between box body 1 2 and box body 2 3. The drive shell 61 is fixedly connected to the base 1, and a motor 2 62 is installed inside the drive shell 61. A vertical plate 63 is provided on one side of the motor 2 62, and the vertical plate 63 is fixedly connected to the drive shell 61. A threaded rod 64 is provided on the side of the vertical plate 63 away from the motor 2 62, and one end of the threaded rod 64 passes through the vertical plate 63 and is fixedly connected to the output shaft of the motor 2 62. The other end of the threaded rod 64 is rotatably connected to the drive shell 61, and a nut 65 is threadedly connected to the side wall of the threaded rod 64. The nut 65 is slidably connected to the drive shell 61, and the nut 65 is connected to the support plate 71.

[0044] Furthermore, a motor three 66 is installed on the top of the nut 65, and a hydraulic cylinder 67 is provided on the output shaft of the motor three 66. The hydraulic cylinder 67 and the output shaft of the motor three 66 are detachably connected, and the output shaft of the hydraulic cylinder 67 is fixedly connected to the support plate 71. A guide block 68 is installed at the bottom of the nut 65, and a guide rail 69 is horizontally provided inside the guide block 68. One end of the guide rail 69 is fixedly connected to the vertical plate 63, and the other end of the guide rail 69 is fixedly connected to the drive shell 61.

[0045] Furthermore, the dosage unit 4 includes a dosage box 41, which is located on the side wall of the box body 2 and fixedly connected to the box body 2. A pressure pump 42 is installed on the side wall of the dosage box 41, and the liquid inlet of the pressure pump 42 is connected to the dosage box 41. The liquid outlet of the pressure pump 42 is provided with a tube body 43, one end of the tube body 43 is connected to the liquid outlet of the pressure pump 42, and the other end of the tube body 43 is connected to the box body 2. A valve body 44 is installed on the side wall of the tube body 43.

[0046] Furthermore, a liquid outlet pipe 8 is provided on the side wall of the box body 2, one end of the liquid outlet pipe 8 is connected to the box body 2, and the other end of the liquid outlet pipe 8 is installed with a valve body 2 9.

[0047] To sum up, by setting up a stirring mechanism, the stirring mechanism can adjust the height, left and right position, and lateral angle of the stirring device 7 through the moving device 6 therein, so that the stirring device 7 can be easily moved out of box 1 2 or box 2 3, thereby facilitating the staff to clean the box and the components in the stirring device 7. In addition, this device can continuously prepare the organic defilming liquid through two boxes and two sets of feeding devices, thereby preventing the problem of being unable to prepare the organic defilming liquid due to the cleaning of the box.

[0048] The above description is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for preparing an organic film stripping solution, characterized in that: include: Step S1, placing an inorganic base, a surfactant, a chelating agent, an alcohol amine, an alkyl quaternary ammonium salt corrosion inhibitor, a buffer, a fatty amine and water in a stirring mechanism and stirring to obtain a mixed solution; Step S2: placing the mixed solution obtained in step S1 in a filtering mechanism for filtration to obtain an organic film removal solution.

2. The method for preparing an organic film stripping solution according to claim 1, wherein: The stirring mechanism comprises a base (1), a box body 1 (2) is installed on the top of the base (1), a box body 2 (3) is provided on one side of the box body 1 (2), the box body 2 (3) and the base (1) are fixedly connected, a feeding device 1 (4) and a feeding device 2 (5) are respectively installed on the side walls of the box body 1 (2) and the box body 2 (3), a moving device (6) is provided between the box body 1 (2) and the box body 2 (3), the moving device (6) is connected to the base (1), a stirring device (7) is installed on the moving device (6), and the stirring device (7) is located in the box body 1 (2).

3. The method for preparing an organic film stripping solution according to claim 2, wherein: The stirring device (7) comprises a support plate (71), the support plate (71) is located at the top of the box body (2), the bottom of the support plate (71) is provided with a stirring shaft (72), the stirring shaft (72) and the support plate (71) are rotatably connected, a stirring shaft (73) is provided on one side of the stirring shaft (72), the stirring shaft (73) and the support plate (71) are rotatably connected, and the stirring shaft (72) and the stirring shaft (73) are transmission-connected.

4. The method for preparing an organic film stripping solution according to claim 3, wherein: A plurality of stirring rods (74) are mounted on the side wall of the stirring shaft (72), and a plurality of stirring rods (75) are mounted on the side wall of the stirring shaft (73). The stirring rods (74) on the stirring shaft (72) and the stirring rods (75) on the stirring shaft (73) are arranged in an interlaced manner.

5. The method for preparing an organic film stripping solution according to claim 4, wherein: The top of the support plate (71) is provided with a transmission shaft 1 (76) and a transmission shaft 2 (77), the transmission shaft 1 (76) and the transmission shaft 2 (77) are fixedly connected to the stirring shaft 1 (72) and the stirring shaft 2 (73) respectively, a driving wheel (78) is sleeved and installed on the side wall of the transmission shaft 1 (76), a driven wheel (79) is sleeved and installed on the side wall of the transmission shaft 2 (77), a transmission belt (80) is provided between the driving wheel (78) and the driven wheel (79), the driving wheel (78) and the driven wheel (79) are connected by the transmission belt (80), and a motor 1 (81) is installed on the top of the support plate (71), and the motor 1 (81) is used to drive the transmission shaft 1 (76) to rotate.

6. The method for preparing an organic film stripping solution according to claim 3, wherein: The mobile device (6) includes a drive shell (61), the drive shell (61) is located between the box body 1 (2) and the box body 2 (3), the drive shell (61) and the base (1) are fixedly connected, the drive shell (61) is installed with the motor 2 (62) inside, a vertical plate (63) is provided on one side of the motor 2 (62), the vertical plate (63) and the drive shell (61) are fixedly connected, a threaded rod (64) is provided on the side of the vertical plate (63) away from the motor 2 (62), one end of the threaded rod (64) passes through the vertical plate (63) and is fixedly connected to the output shaft of the motor 2 (62), the other end of the threaded rod (64) is rotatably connected to the drive shell (61), a nut (65) is threadedly connected on the side wall of the threaded rod (64), the nut (65) is slidably connected to the drive shell (61), and the nut (65) is connected to the support plate (71).

7. The method for preparing an organic film stripping solution according to claim 6, wherein: A motor three (66) is installed on the top of the nut (65), and a hydraulic cylinder (67) is provided on the output shaft of the motor three (66). The hydraulic cylinder (67) and the output shaft of the motor three (66) are detachably connected, and the output shaft of the hydraulic cylinder (67) is fixedly connected to the support plate (71). A guide block (68) is installed on the bottom of the nut (65), and a guide rail (69) is horizontally provided inside the guide block (68). One end of the guide rail (69) is fixedly connected to the vertical plate (63), and the other end of the guide rail (69) is fixedly connected to the drive housing (61).

8. The method for preparing an organic film stripping solution according to claim 2, wherein: The drug delivery device (4) includes a drug storage box (41), which is located on the side wall of the box body (2) and fixedly connected to the box body (2). A pressure pump (42) is installed on the side wall of the drug storage box (41), and the liquid inlet of the pressure pump (42) is connected to the drug storage box (41). The liquid outlet of the pressure pump (42) is provided with a tube (43), one end of the tube (43) is connected to the liquid outlet of the pressure pump (42), and the other end of the tube (43) is connected to the box body (2). A valve body (44) is installed on the side wall of the tube (43).

9. The method for preparing an organic film stripping solution according to claim 8, wherein: A liquid outlet pipe (8) is provided on the side wall of the box body 1 (2), one end of the liquid outlet pipe (8) is connected to the box body 1 (2), and a valve body 2 (9) is installed on the other end of the liquid outlet pipe (8).

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