Dispersivity regulation and control preparation process of chemical reagent

Abstract

The invention discloses a chemical reagent dispersibility regulation and control preparation process, and particularly relates to the field of chemical reagent preparation, and the chemical reagent dispersibility regulation and control preparation process comprises the following steps: S1, selecting an anionic, cationic or nonionic surfactant as a main dispersant, selecting a high-molecular polymer as an auxiliary dispersant, and compounding the main dispersant and the auxiliary dispersant to obtain a dispersion liquid; a dispersant solution is obtained; s2, mixing the raw materials with the dispersing agent solution, and carrying out primary mixing treatment by adopting a mixing machine to obtain a mixture; s3, for the floating liquid raw material, placing the mixture in a high-frequency ultrasonic machine for treatment, and for the magnetic raw material, placing the mixture in an alternating electromagnetic field for treatment; and S4, an electromagnetic coil is arranged in a stirring paddle of the stirrer, a rotating electromagnetic field is applied while mechanical stirring is conducted, a partition heating / refrigerating module is arranged on the wall of the mixing container, and the temperatures of different areas are controlled. The chemical reagent can be efficiently subjected to dispersion regulation and control preparation treatment.

Description

Technical Field

[0001] The present invention relates to the field of chemical reagent preparation, and more specifically, to a preparation process for controlling the dispersibility of chemical reagents. Background Art

[0002] In applications in many fields such as chemistry, materials, and biology, the dispersibility of chemical reagents plays a crucial role. Good dispersibility can ensure the uniform distribution of reagents in the reaction system, enabling the reaction to proceed fully, improving the reaction efficiency and product quality. However, there are many deficiencies in the current reagent preparation process in terms of dispersibility control.

[0003] The common method is to simply mix the solute with the solvent and then perform stirring or ultrasonic treatment. But this method has poor effects on some poorly soluble solutes or solutes that are prone to agglomeration. For example, in the preparation of nano-material solutions, due to the large specific surface area and surface energy of nano-particles, they are prone to agglomeration, resulting in poor dispersibility of the solution and affecting the application performance of nano-materials. In addition, the traditional method has limited ability to control the long-term stability of the solution. Over time, the solute may gradually precipitate or agglomerate, reducing the quality and usage effect of the solution.

[0004] To solve the above problems, a technical solution is provided now. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a preparation process for controlling the dispersibility of chemical reagents to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: A preparation process for controlling the dispersibility of chemical reagents, comprising the following steps: Step S1, select an anionic, cationic or non-ionic surfactant as the main dispersant, select a polymer as the auxiliary dispersant, and perform a compounding treatment on the main dispersant and the auxiliary dispersant to obtain a dispersant solution; Step S2, mix the raw materials with the dispersant solution, and perform a preliminary mixing treatment using a mixer to obtain a mixture; Step S3, for the floating liquid raw materials, place the mixture in a high-frequency ultrasonic machine for treatment, and for the magnetic raw materials, place them in an alternating electromagnetic field for treatment; Step S4, install electromagnetic coils inside the stirring paddle of a stirrer, apply a rotating electromagnetic field while mechanically stirring, and set a partition heating / cooling module on the wall of the mixing container to control the temperature of different regions; Step S5, add an anti-agglomerant to prevent secondary agglomeration through steric hindrance effects.

[0007] In a preferred embodiment, in step S1, the compounding ratio of the dispersant and the auxiliary dispersant is set to (0.8 - 1.2):(1.4 - 1.6).

[0008] In a preferred embodiment, in step S2, the rotation speed of the mixer is set to 300 - 400 r / min, and the preliminary mixing time is set to 30 - 40 min.

[0009] In a preferred embodiment, in step S3, the frequency of the high-frequency ultrasonic machine is 60 - 100 kHz, and the mixing time is set to 40 - 50 min.

[0010] In a preferred embodiment, in step S3, the frequency of the alternating electromagnetic field is set to 40 - 50 kHz, and the magnetic field strength is set to 0.5 - 1 T.

[0011] In a preferred embodiment, in step S4, the magnitude of the current passing through the coil is adjusted to control the magnetic field strength, and the magnetic field strength range is generally between 0.1 - 1 T. The rotation speed of the mixer is set to 400 - 500 r / min. The rotation direction of the magnetic field is changed by controlling the direction of the current, and the rotation direction of the magnetic field is changed every 5 - 10 min.

[0012] In a preferred embodiment, in step S4, the inside of the mixing container is set as a high-temperature zone, a medium-temperature zone, and a low-temperature zone. The temperature of the high-temperature zone is set to 50 - 70 °C, the temperature of the medium-temperature zone is set to 30 - 40 °C, and the temperature of the low-temperature zone is set to 10 - 20 °C.

[0013] In a preferred embodiment, in step S5, the anti-agglomerant is first pre-dispersed in a small amount of solvent to form a uniform solution or dispersion, and then added to the mixture.

[0014] The technical effects and advantages of the preparation process for controlling the dispersibility of a chemical reagent according to the present invention are as follows: 1. By selecting an anionic, cationic, or non-ionic surfactant as the main dispersant and a polymer as the auxiliary dispersant, and compounding according to the characteristics of different chemical reagents, it is possible to provide an appropriate dispersion effect for the surface properties and solubility characteristics of different chemical reagents. For example, for negatively charged chemical reagent particles, the anionic surfactant can prevent particle agglomeration through electrostatic repulsion; while the polymer auxiliary dispersant can form a steric hindrance layer on the particle surface, further enhancing the dispersion stability and effectively solving the dispersion problem of poorly soluble solutes or easily agglomerated solutes; 2. For different raw material characteristics, high-frequency ultrasonic treatment is used for the suspension raw materials, and alternating electromagnetic field treatment is used for the magnetic raw materials. Combining the synergistic effects of mechanical stirring and rotating electromagnetic field, and the control of different zone temperatures by the heating / cooling module of the mixing container to form a multi-technology synergistic dispersion system. The cavitation effect of high-frequency ultrasonic waves can generate a powerful impact force to break the particle aggregates; the alternating electromagnetic field exerts a Lorentz force on the magnetic raw materials to disperse them in the magnetic field; the combined action of mechanical stirring and rotating electromagnetic field enables the materials to be fully mixed at both the macroscopic and microscopic levels; the zone temperature control induces natural convection of the materials by forming a temperature difference to further promote dispersion, significantly improving the dispersion uniformity and efficiency of chemical reagents; 3. Add an anti-agglomerant and adopt the method of adding it after pre-dispersion to ensure that the anti-agglomerant can be evenly distributed in the mixture. Through the steric hindrance effect, it effectively prevents the chemical reagents from undergoing secondary agglomeration after preparation. This measure greatly improves the stability of chemical reagents during storage and use, avoids the problem of decreased solution quality caused by solute precipitation or agglomeration, and extends the service life of chemical reagents; 4. It can effectively process different types of chemical reagent raw materials such as suspension raw materials and magnetic raw materials. At the same time, through the flexible selection and compounding of dispersants, it can be applied to various chemical reagents, including organic reagents, inorganic reagents, nanomaterial reagents, etc., with wide raw material applicability. Since it can effectively improve the dispersibility and stability of chemical reagents, the chemical reagents prepared by this process can be widely used in many fields such as chemistry, materials, and biology, meeting the diverse requirements of different industries and application scenarios for the performance of chemical reagents, and providing strong support for the technological development and product innovation in related fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic flow chart of a process for controlling the dispersion of a chemical reagent according to the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0017] Example 1: Preparation of nano-titanium dioxide aqueous dispersion Step S1: Select sodium dodecylbenzenesulfonate as the main dispersant and sodium polyacrylate as the auxiliary dispersant, with a compounding ratio of 0.8:1.4. Add the two to deionized water and stir evenly to obtain a dispersant solution; Step S2: Add the nano-titanium dioxide raw material into the dispersant solution, put it into a mixer, and conduct preliminary mixing at a rotation speed of 300 r / min for 30 min to obtain a mixture; Step S3: Place the mixture in a high-frequency ultrasonic machine, set the frequency to 60 kHz, and process for 40 min; Step S4: Install an electromagnetic coil inside the stirring paddle of the mixer, adjust the current passing through the coil to maintain the magnetic field strength at 0.1 T, set the rotation speed of the mixer to 400 r / min. At the same time, set up a partition heating / cooling module on the wall of the mixing container, divide the inside of the container into a high-temperature zone, a medium-temperature zone, and a low-temperature zone, set the temperature of the high-temperature zone to 50 °C, the temperature of the medium-temperature zone to 30 °C, and the temperature of the low-temperature zone to 10 °C, and change the rotation direction of the magnetic field every 5 min; Step S5: Select nano-silica as the anti-agglomerant. First, pre-disperse it in a small amount of deionized water to form a uniform dispersion, and then add it to the mixture.

[0018] Example 2: Preparation of magnetic iron oxide powder dispersion Step S1: Select cetyltrimethylammonium bromide as the main dispersant and polyethylene glycol as the auxiliary dispersant, compound them in a ratio of 1.2:1.6, and dissolve them in an ethanol solvent to prepare a dispersant solution; Step S2: Put the magnetic iron oxide raw material and the dispersant solution into a mixer and mix at a rotation speed of 400 r / min for 40 min to obtain a mixture; Step S3: Place the mixture in an alternating electromagnetic field, set the frequency to 50 kHz, and the magnetic field strength to 1 T for treatment; Step S4: In the mixer, adjust the current to keep the magnetic field strength generated by the electromagnetic coil inside the stirring paddle at 0.5 T, set the rotation speed of the mixer to 500 r / min. Inside the mixing container, set the temperature of the high-temperature zone to 70 °C, the temperature of the medium-temperature zone to 40 °C, and the temperature of the low-temperature zone to 20 °C, and change the rotation direction of the magnetic field every 10 min; Step S5: Use polyvinyl alcohol as the anti-agglomerant, pre-disperse it in ethanol first, and then add it to the mixture.

[0019] Example 3: Preparation of organic pigment aqueous dispersion Step S1: Use Tween-80 as the main dispersant and sodium polyacrylate as the auxiliary dispersant, compound them in a ratio of 1.0:1.5, and dissolve them in deionized water to obtain a dispersant solution; Step S2: Mix the organic pigment raw material and the dispersant solution in a mixer at a rotation speed of 350 r / min for 35 min to form a mixture; Step S3: Put the mixture into a high-frequency ultrasonic machine, set the frequency to 100 kHz, and process for 50 min; Step S4: During the stirring process, control the magnetic field strength of the stirring paddle electromagnetic coil to 0.3 T, the rotation speed of the mixer to 450 r / min, set the temperatures of the high-temperature zone, medium-temperature zone, and low-temperature zone of the mixing container to 60 °C, 35 °C, and 15 °C respectively, and change the magnetic field rotation direction every 8 min; Step S5: Select gaseous aluminum oxide as the anti-agglomerant and add it to the mixture after pre-dispersion.

[0020] Example 4: Preparation of nano silver particle dispersion Step S1: Select sodium dodecyl sulfate as the main dispersant and polyethylene glycol as the auxiliary dispersant, with a compounding ratio of 0.9:1.45, and dissolve them in deionized water to prepare a dispersant solution; Step S2: Add the nano silver particle raw material and the dispersant solution to a mixer and mix them at a rotation speed of 320 r / min for 32 min to obtain a mixture; Step S3: Place the mixture in an alternating electromagnetic field, set the frequency to 40 kHz, and the magnetic field strength to 0.5 T for treatment; Step S4: Adjust the current of the stirring paddle electromagnetic coil to keep the magnetic field strength at 0.8 T, set the rotation speed of the mixer to 480 r / min, set the temperature of the high-temperature zone of the mixing container to 65 °C, the temperature of the medium-temperature zone to 38 °C, and the temperature of the low-temperature zone to 18 °C, and change the magnetic field rotation direction every 7 min; Step S5: Use polyvinylpyrrolidone as the anti-agglomerant and add it to the mixture after pre-dispersion.

[0021] Example 5: Preparation of magnetic nano calcium carbonate dispersion Step S1: Select octadecyltrimethylammonium chloride as the main dispersant and sodium carboxymethylcellulose as the auxiliary dispersant, compound them in a ratio of 1.1:1.55, and dissolve them in a propylene glycol solvent to obtain a dispersant solution; Step S2: Mix the magnetic nano calcium carbonate raw material and the dispersant solution in a mixer at a rotation speed of 380 r / min for 38 min to form a mixture; Step S3: Put the mixture into a high-frequency ultrasonic machine, set the frequency to 80 kHz, and process for 42 min; Step S4: During the stirring process, control the magnetic field strength of the stirring paddle electromagnetic coil to 0.2 T, the rotation speed of the mixer to 420 r / min, set the temperatures of the high-temperature zone, medium-temperature zone, and low-temperature zone of the mixing container to 55 °C, 32 °C, and 12 °C respectively, and change the magnetic field rotation direction every 6 min; Step S5: Select nano silicon dioxide as the anti-agglomerant and add it to the mixture after pre-dispersion.

[0022]

[0023] It can be clearly understood from the above structure that by adopting the preparation process for controlling the dispersibility of a chemical reagent according to the present invention, the control effect of the dispersibility of the chemical reagent can be improved very well.

[0024] As described above, the above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

[0025] Finally: The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall all be included within the protection scope of the present invention.

Claims

1. A preparation process for controlling the dispersion of a chemical reagent, characterized in that, It includes the following steps: Step S1: Select an anionic, cationic or non-ionic surfactant as the main dispersant, and select a polymer as the auxiliary dispersant. Compound the main dispersant and the auxiliary dispersant to obtain a dispersant solution; Step S2: Mix the raw materials with the dispersant solution, and perform preliminary mixing treatment with a mixer to obtain a mixture; Step S3: For the floating liquid raw materials, place the mixture in a high-frequency ultrasonic machine for treatment. For the magnetic raw materials, place them in an alternating electromagnetic field for treatment; Step S4: Install an electromagnetic coil inside the stirring paddle of the mixer, apply a rotating electromagnetic field while mechanically stirring, and set a partition heating / cooling module on the wall of the mixing container to control the temperature of different regions; Step S5: Add an anti-agglomerant to prevent secondary agglomeration through steric hindrance effect.

2. The preparation process for controlling the dispersibility of a chemical reagent according to claim 1, characterized in that: In step S1, the compounding ratio of the dispersant and the auxiliary dispersant is set to (0.8 - 1.2):(1.4 - 1.6).

3. The preparation process for controlling the dispersibility of a chemical reagent according to claim 1, characterized in that: In step S2, the rotation speed of the mixer is set to 300 - 400 r / min, and the preliminary mixing time is set to 30 - 40 min.

4. The preparation process for controlling the dispersibility of a chemical reagent according to claim 1, characterized in that: In step S3, the frequency of the high-frequency ultrasonic machine is 60 - 100 kHz, and the mixing time is set to 40 - 50 min.

5. The preparation process for controlling the dispersibility of a chemical reagent according to claim 1, characterized in that: In step S3, the frequency of the alternating electromagnetic field is set to 40 - 50 kHz, and the magnetic field intensity is set to 0.5 - 1 T.

6. The preparation process for controlling the dispersibility of a chemical reagent according to claim 1, characterized in that: In step S4, adjust the magnitude of the current passing through the coil to control the magnetic field intensity. The magnetic field intensity range is usually between 0.1 - 1 T. The rotation speed of the mixer is set to 400 - 500 r / min. Change the rotation direction of the magnetic field by controlling the direction of the current, and change the rotation direction of the magnetic field every 5 - 10 min.

7. The preparation process for controlling the dispersibility of a chemical reagent according to claim 1, characterized in that: In step S4, the inside of the mixing container is set as a high-temperature zone, a medium-temperature zone and a low-temperature zone. The temperature of the high-temperature zone is set to 50 - 70 °C, the temperature of the medium-temperature zone is set to 30 - 40 °C, and the temperature of the low-temperature zone is set to 10 - 20 °C.

8. The preparation process for controlling the dispersibility of a chemical reagent according to claim 1, characterized in that: In step S5, first pre-disperse the anti-agglomerant in a small amount of solvent to form a uniform solution or dispersion, and then add it to the mixture.

Images