Device for measuring iodine absorption value of carbon black

Abstract

The utility model provides a carbon black iodine absorption value measuring device which comprises a rotating wheel disc, a magnetic stirrer, a transmission filtering device and a reaction tank, a plurality of sample cups can be placed on the rotating wheel disc, after a mixed liquid sample is stirred by the magnetic stirrer, an iodine solution and a sodium thiosulfate solution are extracted by a plunger pump, and the iodine absorption value of the carbon black is measured. In the extraction process, carbon black in the iodine solution is filtered through the filter pipe, filtrate is added into the reaction tank and chemically reacts with the sodium thiosulfate, and the iodine ion electrode in the reaction tank can judge the end point of the reaction by detecting the electron exchange capacity of the iodine solution and the sodium thiosulfate in the reaction tank when the iodine solution and the sodium thiosulfate are subjected to oxidation-reduction reaction. And meanwhile, the measured current data is transmitted to a microcomputer for automatic processing, so that accurate carbon black iodine absorption value data is obtained. The problems that manual operation is low in efficiency and the precision is greatly influenced by human factors are solved, and the advantages of high efficiency and high precision are achieved.

Description

Technical Field

[0001] This utility model relates to the field of chemical analysis equipment, specifically to a device for determining the iodine uptake value of carbon black. Background Technology

[0002] Carbon black is an important industrial material widely used in rubber, plastics, coatings, inks, and other fields. Its performance directly affects the quality of the final product. The iodine absorption value of carbon black is one of the important indicators of its performance, reflecting the activity and adsorption capacity of its surface. A high iodine absorption value usually means that the carbon black has stronger adsorption capacity and better reinforcing properties. Because of the profound impact of the iodine absorption value on carbon black performance, its accurate measurement is particularly important. Any deviation in the measurement results may lead to a misjudgment of the carbon black's performance, thus affecting the quality and performance of the final product. However, the traditional method for determining the iodine absorption value of carbon black is mainly manual titration. This method involves mixing carbon black with an iodine solution to allow the carbon black to adsorb iodine, and then calculating the iodine absorption value by titrating the unadsorbed iodine. This method is not only complex and inefficient, but its accuracy is also greatly affected by human factors. To improve the measurement efficiency and accuracy, we provide an automated carbon black iodine absorption value measuring device. Summary of the Invention

[0003] This utility model aims to overcome the aforementioned deficiencies in the existing technology by providing a carbon black iodine absorption value measuring device, comprising a rotary disc, a magnetic stirrer, a transfer and filtration device, and a reaction tank. The transfer and filtration device includes: an iodine solution sampling tube, an iodine solution delivery tube, an iodine solution plunger pump, a mixed solution sampling tube, a filter tube, a filtrate tube, a filtrate delivery tube, a filtrate plunger pump, a sodium thiosulfate sampling tube, a sodium thiosulfate delivery tube, and a sodium thiosulfate plunger pump.

[0004] The iodine solution sampling tube is connected at one end to an iodine solution bottle and at the other end to the P end of an iodine solution plunger pump. The iodine solution delivery tube is connected at one end to the T end of the iodine solution plunger pump and at the other end to a mixing tank. The rotary disc has multiple mixing tank placement positions, and a magnetic stirrer is fixedly placed below the rotary disc. The rotary disc can rotate clockwise by a motor, thereby stirring the iodine solution in each mixing tank in turn to ensure that the carbon black and iodine solution are fully mixed and reach adsorption equilibrium.

[0005] Furthermore, one end of the mixed solution sampling tube is inserted into the mixing tank, and the other end is connected to one end of the filter tube. One end of the filtrate tube is connected to the P end of the filtrate plunger pump, and the other end is connected to the other end of the filter tube. One end of the filtrate delivery tube is connected to the T end of the filtrate plunger pump, and the other end is inserted into the titration tank. One end of the sodium thiosulfate sampling tube is inserted into the sodium thiosulfate reagent bottle, and the other end is connected to the P end of the sodium thiosulfate plunger pump. One end of the sodium thiosulfate delivery tube is connected to the T end of the sodium thiosulfate plunger pump, and the other end is inserted into the titration tank.

[0006] Furthermore, an iodine ion electrode is inserted in the titration cell, which can determine the endpoint of the reaction by detecting the amount of electron exchange during the redox reaction between iodine solution and sodium thiosulfate in the reaction cell.

[0007] In summary, compared with the prior art, this utility model adopts multi-cup automatic measurement in turn, and the carbon black in the iodine solution can be filtered through the filter tube during the extraction process, which eliminates the problems of low efficiency and high accuracy of manual operation. It has the advantages of high efficiency and high accuracy. Attached Figure Description

[0008] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, do not constitute an undue limitation of the present invention. In the drawings:

[0009] Figure 1 This is a schematic diagram of an embodiment of the present invention.

[0010] Figure 2 This is a schematic diagram illustrating the working principle of an embodiment of the present invention.

[0011] Figure 3 This is a schematic diagram of the internal structure of the titration cell in an embodiment of this utility model.

[0012] The components are: 1. housing, 2. magnetic stirrer, 3. iodine bottle, 4. iodine dispensing tube, 5. iodine plunger pump, 6. iodine infusion tube, 7. mixed solution dispensing tube, 8. filter tube, 9. filtrate tube, 10. filtrate plunger pump, 11. filtrate infusion tube, 12. sodium thiosulfate infusion tube, 13. sodium thiosulfate plunger pump, 14. sodium thiosulfate dispensing tube, 15. sodium thiosulfate reagent bottle, 16. titration cell, 17. rotary disc, and 18. mixing cell. Detailed Implementation

[0013] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. The present invention is not limited to the specific embodiments disclosed below.

[0014] Please see Figure 1 This utility model provides a device for determining the iodine uptake value of carbon black, comprising:

[0015] 1. Casing; 2. Magnetic stirrer; 3. Iodine solution bottle; 4. Iodine solution dispensing tube; 5. Iodine solution plunger pump; 6. Iodine solution delivery tube; 7. Mixed solution dispensing tube; 8. Filter tube; 9. Filtrate tube; 10. Filtrate plunger pump; 11. Filtrate delivery tube; 12. Sodium thiosulfate delivery tube; 13. Sodium thiosulfate plunger pump; 14. Sodium thiosulfate dispensing tube; 15. Sodium thiosulfate reagent bottle; 16. Titration cell; 17. Rotary disc; 18. Mixing cell.

[0016] In this embodiment, the rotary disk 17 has multiple mixing tank placement positions, which can hold multiple mixing tanks 18. Several equal masses of carbon black powder are weighed and added to each mixing tank 18. Then, the iodine plunger pump 5 opens its P end and closes its T end, drawing 30 ml of iodine solution from the iodine bottle 3 along the iodine dispensing pipe 4 into the iodine plunger pump 5. Then, the T end is opened and the P end is closed, adding the iodine solution along the iodine delivery pipe 6 into the mixing tank 18 to mix with the carbon black powder to form a mixture. The magnetic stirrer 2 is fixedly installed directly below the first mixing tank placement position of the rotary disk 17, and the rotary disk 17 can be connected to a motor to rotate clockwise, ensuring that each mixing tank 18 can remain directly above the magnetic stirrer 2. This allows for sequential stirring of the mixture in each mixing tank 18, ensuring that the carbon black and iodine solution are fully mixed and reach adsorption equilibrium. After thorough mixing, the P-end of the mixing plunger pump 10 is opened and the T-end is closed, drawing 25 ml of a mixture of iodine solution and carbon black powder from the mixing tank 18. The drawn mixture flows through the mixing liquid receiving pipe 7 into the filter pipe 8 to filter out the carbon black in the mixture, while the iodine solution is retained and enters the mixing plunger pump 10 along the filter pipe 9. Then, the T-end of the mixing plunger pump 10 is opened and the P-end is closed, and the filtrate is added to the titration tank 16 along the filtrate delivery pipe 11. At the same time, the T-end of the sodium thiosulfate plunger pump 13 is closed and the P-end is opened, drawing a certain amount of sodium thiosulfate solution from the sodium thiosulfate reagent bottle 15 along the sodium thiosulfate receiving pipe 14 into the sodium thiosulfate plunger pump 13. Then, the P-end is closed and the T-end is opened, and the sodium thiosulfate solution is continuously added to the titration tank 16 along the sodium thiosulfate delivery pipe 12 to react chemically with the iodine solution.

[0017] Furthermore, an iodide ion electrode 161 is inserted in the titration cell 16. The endpoint of the reaction can be determined by detecting the amount of electron exchange during the redox reaction between iodine solution and sodium thiosulfate in the reaction cell. When the endpoint is reached, the addition of sodium thiosulfate solution to the titration cell 16 is immediately stopped. At the same time, the measured current data is transmitted to the microcomputer for automatic processing to obtain accurate carbon black iodine uptake value data. Finally, the titration cell 16 is cleaned, and the iodine solution sampling tube 4 is moved into the next numbered mixing cell 18. The above steps are repeated until the iodine uptake value data of carbon black in each mixing cell 16 is obtained. This completes the embodiment.

[0018] The technical solutions provided by the embodiments of this utility model have been disclosed in detail above. Specific examples have been used to illustrate the principles and implementation methods of the embodiments of this utility model. The description of the above embodiments is only for helping to understand the principles of the embodiments of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the embodiments of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A device for determining the iodine adsorption number of carbon black comprising a rotating disc, a magnetic stirrer, a transfer filtration device and a reaction cell, characterized in that: The transmission filtering device comprises an iodine solution taking pipe, an iodine solution feeding pipe, an iodine solution plunger pump, a mixed solution taking pipe, a filtering pipe, a filtrate pipe, a filtrate feeding pipe, a filtrate plunger pump, a sodium thiosulfate taking pipe, a sodium thiosulfate feeding pipe, a sodium thiosulfate plunger pump, one end of the iodine solution taking pipe is connected with an iodine solution bottle, and the other end is connected with a P end of the iodine solution plunger pump, one end of the iodine solution feeding pipe is connected with a T end of the iodine solution plunger pump, and the other end is inserted into a mixing pool, the rotating disc is provided with a plurality of mixing pool placing positions, a magnetic stirrer is fixedly arranged below the rotating disc, the rotating disc can rotate clockwise by a motor, so that the iodine solution in each mixing pool can be stirred in sequence, the carbon black and the iodine solution are fully mixed, the adsorption equilibrium is reached, one end of the mixed solution taking pipe is inserted into the mixing pool, and the other end is connected with one end of the filtering pipe, one end of the filtrate pipe is connected with a P end of the filtrate plunger pump, and the other end is connected with the other end of the filtering pipe, one end of the filtrate feeding pipe is connected with a T end of the filtrate plunger pump, and the other end is inserted into a titration pool, one end of the sodium thiosulfate taking pipe is inserted into a sodium thiosulfate reagent bottle, and the other end is connected with a P end of the sodium thiosulfate plunger pump, one end of the sodium thiosulfate feeding pipe is connected with a T end of the sodium thiosulfate plunger pump, and the other end is inserted into the titration pool, an iodine ion electrode is inserted into the titration pool, and the end point of the reaction can be judged by detecting the electronic exchange amount when the iodine solution and the sodium thiosulfate are subjected to redox reaction in the reaction pool.

2. The apparatus of claim 1, wherein, The rotating disc is provided with a plurality of beaker placing positions, and a plurality of mixing pools can be placed.

3. The apparatus of claim 1 or 2, wherein, The mixed solution taking pipe is connected with the P end of the filtrate plunger pump through the filtering pipe, so that the carbon black in the iodine solution and carbon black mixed solution sample can be filtered out, and the iodine solution is reserved.

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