Film pressing device for preparing polyacrylonitrile spinning solution
By designing a polyacrylonitrile spinning solution preparation pressing device, the problem of membrane non-uniformity was solved, the pressing efficiency and the accuracy of test data were improved, and the structure is simple and practical.
Patent Information
- Application Number
- CN202422983821.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-12-04
AI Technical Summary
In the current process of preparing polyacrylonitrile spinning dope, the sample pressing step involves manually pressing the film by stacking glass sheets, which results in uneven film and affects the accuracy of test results.
A polyacrylonitrile spinning solution preparation pressing device was designed, including a base, main rod, support plate, cylinder, pressure plate, limiting component and limiting guide rod. The cylinder drives the pressure plate to press the glass sheet, and the combination of silicone pad and rubber pad improves stability and friction. The limiting plate limits the output end of the cylinder to ensure the uniformity of the film.
It achieves improved membrane uniformity and pressing efficiency, ensures the accuracy of test data, avoids test failures caused by inconsistent membrane thickness, and has a simple structure and strong practicality.
Smart Images
Figure CN223526093U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to polyacrylonitrile spinning solution preparation technical field especially polyacrylonitrile spinning solution preparation film pressing device. BACKGROUND
[0002] Polyacrylonitrile spinning solution test solid content, molecular weight play the later certainty to stable production, and it has very important guiding direction to whether the later performance stable original silk and carbon fiber material can be produced.
[0003] Now polyacrylonitrile solution preparation process sample film pressing step adopts superimposed glass manual film pressing, and there is uneven film sheet, and the test is greatly influenced, so the solidification film sheet thickness is especially critical to test result, and in view of the above problem, we have launched polyacrylonitrile spinning solution preparation film pressing device. UTILITY MODEL CONTENT
[0004] The utility model discloses polyacrylonitrile spinning solution preparation film pressing device, aims at solving now polyacrylonitrile solution preparation process sample film pressing step adopts superimposed glass manual film pressing, and there is uneven film sheet, and the test is greatly influenced technical problem.
[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:
[0006] Polyacrylonitrile spinning solution preparation film pressing device, including the base, the top one side of base is fixedly connected with main rod, the outside of main rod and the above of base is fixedly connected with the support plate, the top of support plate is fixedly connected with the pneumatic cylinder, the output of pneumatic cylinder extends to the below of support plate and is fixedly connected with the pressing plate, the top of base is equipped with the limit component, the limit component and pressing plate are used mutually.
[0007] In a preferred scheme, the limit component includes a limit guide rod, the limit guide rod is slidingly connected inside the support plate, the output side of the pneumatic cylinder is fixedly connected with a limit block, and the top of the limit block is fixedly connected with the bottom of the limit guide rod.
[0008] In a preferred scheme, the outside of the support plate is fixedly connected with a gas pressure gauge, the outside of the pneumatic cylinder is fixedly connected with a pneumatic cylinder switch, and the gas pressure gauge and the pneumatic cylinder switch are connected through a connecting pipeline.
[0009] In a preferred scheme, the top of the base and the bottom of the pressing plate are fixedly connected with silica gel pads.
[0010] In a preferred scheme, the bottom of the base is fixedly connected with a rubber pad for increasing friction.
[0011] In a preferred scheme, the top of the limiting guide rod is fixedly connected with a limiting disc.
[0012] The polyacrylonitrile spinning solution preparation film pressing device has the following advantages:
[0013] Firstly, compared with the manual film pressing mode, the film is more uniform, the film pressing efficiency is higher, the data accuracy of subsequent tests is ensured, the test failure caused by the different thicknesses of the film is avoided, the structure is simple, and the practicality is higher.
[0014] Secondly, the silica gel pad can protect the glass sheet, prevent the glass sheet from being damaged after being pressed, the rubber pad can increase the friction force, the base is more stable, and the output end of the air cylinder can be limited by the limiting disc. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 The utility model provides a polyacrylonitrile spinning solution preparation film pressing device's three -dimensional schematic view.
[0016] Figure 2 The utility model provides a polyacrylonitrile spinning solution preparation film pressing device's three -dimensional schematic view.
[0017] Figure 3 The utility model provides a polyacrylonitrile spinning solution preparation film pressing device's three -dimensional schematic view.
[0018] In the drawing, 1 is base, 2 is main rod, 3 is support plate, 4 is air cylinder, 5 is pressing plate, 6 is limiting guide rod, 7 is limiting block, 8 is limiting disc, 9 is air pressure gauge, 10 is air cylinder switch, 11 is silica gel pad, 12 is rubber pad. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, not all the embodiments. The components of the embodiments of the application described and indicated in the drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the application. Based on the embodiments of the application, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the application.
[0020] REFERENCE Figure 1 - Figure 3The utility model relates to a polyacrylonitrile spinning dope preparation film pressing device, including base 1, one side fixedly connected with main shaft 2 at the top of base 1, the outside of main shaft 2 and the above of base 1 are fixedly connected with support plate 3, the top of support plate 3 is fixedly connected with pneumatic cylinder 4, the output of pneumatic cylinder 4 extends to the below of support plate 3 and is fixedly connected with pressing plate 5, the top of base 1 is equipped with limiting assembly, and limiting assembly and pressing plate 5 are used in pairs.
[0021] In the above technical solution, considering the problems of uneven film and great influence on testing in the sample film pressing step in the polyacrylonitrile dope preparation process, in order to solve such problems, the specific operation is as follows:
[0022] Refer to Figure 1 Figure 3 In a preferred embodiment, when in use, the pressure value of the pneumatic cylinder 4 is set to 0.3 MPa, two 80*80*3mm glass sheets are selected, weighed, and zeroed. About 1.0±0.3g of material is placed on the glass sheet, covered with another glass sheet, and weighed M1 (accurate to 0.0001 g). The glass sheet is placed on the film press base. Turn on the film press cylinder switch and press the sample into a 0.5mm liquid film layer. Pull the two glass sheets apart in reverse and immerse them in ion-free water to solidify into a film. Cut the material film into small strips with a 2mm interval and place them in ion-free water at room temperature. Gradually heat to boiling and maintain for 8-10 min. Replace the 95±5℃ ion-free water and cook for 3 times. Take out the cooked material and place it in a 95±5℃ oven for 3h. Take out the dried material and place it in a desiccator for 10 min. Weigh the weight. Record the data M2, accurate to 0.0001 g. Solid content calculation: solid content S=M2 / M1*100%, test 4 parallel samples, variation coefficient <0.2%. Compared with manual film pressing, the film is more uniform, the film pressing efficiency is higher, the data accuracy of subsequent testing is ensured, the situation of test failure caused by different film thickness is avoided, the structure is simple, and the practicality is strong.
[0023] Refer to Figure 1 Figure 3 In a preferred embodiment, the top of the base 1 and the bottom of the pressing plate 5 are fixedly connected with silica gel pads 11. The bottom of the base 1 is fixedly connected with a rubber pad 12 for increasing friction. The top of the limiting guide rod 6 is fixedly connected with a limiting disc 8. The silica gel pads 11 can protect the glass sheets from being damaged after being pressed, the rubber pad 12 can increase the friction to make the base 1 more stable, and the limiting disc 8 can limit the output end of the air cylinder 4.
[0024] Working principle: when in use, the pressure value of the air cylinder 4 is set to 0.3 MPa, two 80*80*3 mm glass sheets are selected, the weight is measured, and the zero is cleared; about 1.0±0.3 g of material is placed on the glass sheet, another glass sheet is covered, the weight M1 (accurate to 0.0001 g) is measured, and the glass sheet is placed on the base of the film press; the air cylinder switch of the film press is turned on, the sample is pressed into a 0.5 mm liquid film layer; the two glass sheets are pulled apart in reverse, and are immersed in ion-free water to solidify into a film; the material film is cut into small strips with a 2 mm interval, is placed in ion-free water at room temperature, is gradually heated to boiling and kept for 8-10 min, is replaced with ion-free water at 95±5℃ for 3 times, is taken out, and the cooked material is placed in an oven at 95±5℃ for 3 h, the dried material is taken out, is placed in a dryer for 10 min, and the weight is measured. The data M2 is recorded, accurate to 0.0001 g, the solid content calculation is S=M2 / M1*100%, 4 parallel sample tests are performed, and the variation coefficient is <0.2%.
[0025] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. The substitution can be a substitution of part of the structure, device, method step, or a complete technical solution. According to the technical solution and the inventive concept of the present application, equivalent substitution or change should be covered in the protection scope of the present application.
Claims
1. A device for preparing a press filter for polyacrylonitrile spinning dope, comprising a base (1), characterized in that: The top side of the base (1) is fixedly connected with a main rod (2), the outer side of the main rod (2) and above the base (1) is fixedly connected with a supporting plate (3), the top of the supporting plate (3) is fixedly connected with a pneumatic cylinder (4), the output end of the pneumatic cylinder (4) extends below the supporting plate (3) and is fixedly connected with a pressing plate (5), the top of the base (1) is provided with a limiting assembly, and the limiting assembly and the pressing plate (5) are used in cooperation.
2. The polyacrylonitrile dope preparation press device according to claim 1, characterized in that: The limiting assembly comprises a limiting guide rod (6), the limiting guide rod (6) is slidingly connected in the inside of the supporting plate (3), the output end of the pneumatic cylinder (4) is fixedly connected with a limiting block (7), and the top of the limiting block (7) is fixedly connected with the bottom of the limiting guide rod (6).
3. The polyacrylonitrile dope preparation press device according to claim 1, characterized in that: The outer side of the supporting plate (3) is fixedly connected with a gas pressure gauge (9), the outer side of the pneumatic cylinder (4) is fixedly connected with a pneumatic cylinder switch (10), and the gas pressure gauge (9) and the pneumatic cylinder switch (10) are connected through a connecting pipeline.
4. The pressurized membrane device for preparing polyacrylonitrile spinning dope according to claim 1, characterized in that: The top of the base (1) and the bottom of the pressing plate (5) are fixedly connected with silica gel pads (11).
5. The polyacrylonitrile dope preparation press apparatus according to claim 1, wherein: The bottom of the base (1) is fixedly connected with a rubber pad (12) for increasing friction.
6. The polyacrylonitrile dope preparation press apparatus according to claim 2, wherein: The top of the limiting guide rod (6) is fixedly connected with a limiting disc (8). The outer side of the supporting plate (3) is fixedly connected with a gas pressure gauge (9), the outer side of the pneumatic cylinder (4) is fixedly connected with a pneumatic cylinder switch (10), and the gas pressure gauge (9) and the pneumatic cylinder switch (10) are connected through a connecting pipeline.