WO2021109728A1

WO2021109728A1 - Dispersion reactor

Info

Publication number: WO2021109728A1
Application number: PCT/CN2020/121844
Authority: WO
Inventors: 吴斌; 景录如; 张春琪; 崔艺华; 马俊锋; 徐晓风; 张超
Original assignee: 苏州太湖电工新材料股份有限公司
Priority date: 2019-12-06
Filing date: 2020-10-19
Publication date: 2021-06-10
Also published as: CN211303056U

Abstract

Disclosed is a dispersion reactor. The dispersion reactor comprises a reactor cylinder (1) and a stirring device partially arranged inside the reactor cylinder (1), wherein the reactor cylinder (1) comprises a reactor body (11), and a reactor cover (12) detachably connected to the reactor body (11) and used for covering the reactor body (11), and a portion of the stirring device penetrates the reactor cover (12) and extends into the reactor body (11); and the dispersion reactor further comprises an ultrasonic vibration device, wherein the ultrasonic vibration device comprises an ultrasonic generator (31) arranged on the reactor cover (12), an ultrasonic transducer connected to the ultrasonic generator (31), an amplitude-transforming pole connected to the ultrasonic transducer, and an ultrasonic vibration rod (32) connected to the amplitude-transforming pole, and the ultrasonic vibration rod (32) extends into the reactor body (11).

Description

Dispersion reactor

This application requires the prior patent application of the State Intellectual Property Office of China with the application number of CN201922180916.0 and the filing date of 2019.12.6 as priority, and the content of the prior patent application text is fully incorporated into this patent application by reference .

Technical field

This application belongs to the field of composite material preparation, and in particular relates to a composite modification of inorganic nanomaterials and organic materials, and in particular to a dispersion reactor, which can realize modification with organic materials while uniformly dispersing nanoparticles.

Background technique

Inorganic nano/organic composite materials are widely used because they can combine the toughness, elasticity, ductility, processability of organic materials and the hardness and thermal stability of inorganic materials, resulting in many special properties. However, due to the high surface energy of the nanoparticles, they are prone to agglomeration, and the nanoparticles cannot be uniformly dispersed in the organic matrix. As a result, the performance of the composite material will not only not be improved, but will decrease! Therefore, achieving good dispersion of nanoparticles in the resin matrix is a crucial prerequisite for the manufacture of ideal nanocomposite materials. How to completely solve the problem of nanoparticle agglomeration, make the nanoparticles monodisperse, and truly exert the nano effect, is one of the hot spots in the field of nano-modified composite materials.

At present, there are many methods for dispersing nanoparticles. According to the different dispersion methods, they can be divided into physical dispersion (sand milling, roller milling, high-pressure homogenization, ultrasound, etc.) and chemical dispersion (coupling agent method, surface modification method, Sol-gel method, etc.). The current popular method of nanoparticle dispersion is the physical-chemical method, that is, the physical method is used to pre-disperse the nanoparticles, and then they are moved into the modification reactor for chemical modification. The problem is that the steps are cumbersome, the process time is long, and because the nanoparticles are pre-dispersed by physical methods, they must be moved into the reactor. During the transfer process, the nanoparticles will partially re-aggregate, which greatly affects the subsequent surface modification effect. Therefore, it is difficult to obtain a well-dispersed nanoparticle solution, and thus an ideal nanocomposite material cannot be prepared.

Application content

The technical problem to be solved by this application is to overcome the shortcomings of the prior art and provide a new type of dispersion reactor with high-speed stirring shear and ultrasonic dual dispersion function, which can combine the dispersion of inorganic nanoparticles and the improvement of inorganic nanoparticles. The performance is carried out simultaneously, avoiding the incomplete modification caused by the agglomeration effect of inorganic nanoparticles, so that the modified inorganic nanoparticles can achieve monodispersion and truly exert the nano effect.

In order to solve the above technical problems, the technical solutions adopted by this application are as follows:

A dispersion reactor comprising a reactor barrel and a stirring device partially arranged inside the reactor barrel. The reactor barrel includes a reactor body and is detachable from the reactor body. A reactor cover connected to the ground and used to cover the reactor body, the stirring device partially penetrates the reactor cover and extends into the reactor body; the dispersion reactor also includes an ultrasonic vibration device The ultrasonic vibration device includes an ultrasonic generator arranged on the cover of the reactor, an ultrasonic transducer connected with the ultrasonic generator, an horn connected with the ultrasonic transducer, and The ultrasonic vibrating rod connected to the horn, the ultrasonic vibrating rod extends into the body of the reactor.

According to some specific and preferred aspects of the present application, the ultrasonic vibrating rod extends in the up and down direction.

According to some specific and preferred aspects of the present application, the ultrasonic vibration device has at least two and is symmetrically distributed around the stirring device.

According to some specific aspects of the present application, the stirring device includes a driving part fixedly arranged on the reactor cover through a support frame, a coupling that is drivingly connected to the driving part, and is drivingly connected to the coupling And a stirring shaft passing through the reactor cover and extending into the reactor body, and a stirring blade arranged at the lower part of the stirring shaft.

According to some preferred aspects of the present application, the stirring blade has at least two and is sequentially arranged on the stirring shaft along the up and down direction.

According to some preferred aspects of the present application, the stirring blade has a first disc stirring blade arranged at the lower end of the stirring shaft, and a second disc stirring blade arranged above the first disc stirring blade. The first disc stirring blade is located below the ultrasonic vibrating rod, and the ultrasonic vibrating rod is located outside the second disc stirring blade.

According to some preferred aspects of the present application, the first disc-type stirring blade includes a blade body and a plurality of blades formed on the outer periphery of the blade body, and the plurality of blades have a space therebetween. The lower part of the blade body protrudes downward to form an arc-shaped part corresponding to the bottom of the reactor body.

According to some preferred aspects of the present application, the reactor barrel further includes a heat transfer jacket coated on the reactor body, an insulation layer coated on the outer wall of the heat transfer jacket, and the heat transfer clip The jacket has a heat exchange fluid inlet and a heat exchange fluid outlet respectively passing through the insulation layer, the heat exchange fluid inlet is located at the lower part of the heat transfer jacket, and the heat exchange fluid outlet is located at the bottom of the heat transfer jacket Upper part.

According to some specific aspects of the present application, the reactor barrel further includes a discharge pipe arranged at the bottom of the reactor body and respectively passing through the heat transfer jacket and the insulation layer.

According to some specific and preferred aspects of the present application, a hand hole, a material sight glass, a thermometer socket, and a flange for fixing the ultrasonic vibration device are respectively provided on the reactor cover.

Due to the adoption of the above technical solutions, compared with the prior art, this application has the following advantages:

The present application realizes the advantages of convenient replacement and adjustment of the entire device through the cooperation of the detachably connected reactor cover and the reactor body, combined with the stirring device and the ultrasonic vibration device provided on the reactor cover, and the advantages of convenient replacement and adjustment of the entire device are realized, especially Combining high-speed stirring and shearing and ultrasonic dispersion in one, realizes the effective dispersion of inorganic nanoparticles while realizing surface modification, which not only simplifies the operation steps, but also greatly improves the dispersion and modification effects, and avoids the agglomeration effect of inorganic nanoparticles. The modification is not complete, so that the modified inorganic nanoparticles can achieve monodispersion and truly exert the nanometer effect.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of the dispersion reactor of this application;

Among them, 1. Reactor cylinder; 11. Reactor body; 12. Reactor cover; 121. Hand hole; 122. Material sight glass; 123. Thermometer socket; 124. Flange; 13. Heat transfer jacket 131. Heat exchange fluid inlet; 132. Heat exchange fluid outlet; 14. Thermal insulation layer; 15. Discharge pipe; 21. Drive parts; 22. Coupling; 23. Stirring shaft; 24. First disc stirring blade Blade; 25. The second disc stirring blade; 31. Ultrasonic generator; 32. Ultrasonic vibrating rod; 4. Ear-type support; 5. Bolt and screw connection.

Detailed ways

The above solutions are further described below in conjunction with specific embodiments; it should be understood that these embodiments are used to illustrate the basic principles, main features, and advantages of the present application, and the present application is not limited by the scope of the following embodiments.

In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In this application, unless expressly stipulated and defined otherwise, the first feature “on” or “under” the second feature may be in direct contact with the first and second features, or the first and second features may be indirectly through an intermediary. contact. Moreover, the "above", "above" and "above" of the first feature on the second feature may mean that the first feature is directly above or diagonally above the second feature, or it simply means that the level of the first feature is higher than that of the second feature. The “below”, “below” and “below” of the second feature of the first feature may mean that the first feature is directly below or obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.

The application will be further described below in conjunction with the drawings and preferred embodiments of the application.

As shown in Figure 1, this example provides a dispersion reactor. The dispersion reactor includes a reactor barrel 1, a stirring device partially arranged inside the reactor barrel 1, and the reactor barrel 1 includes a reactor body 11, The reactor cover 12 detachably connected with the reactor body 11 and used to cover the reactor body 11, the stirring device partially penetrates the reactor cover 12 and extends into the reactor body 11; the dispersion reactor also includes ultrasonic vibration The ultrasonic vibration device includes an ultrasonic generator 31 arranged on the reactor cover 12, an ultrasonic transducer (not shown) connected to the ultrasonic generator 31, an horn connected to the ultrasonic transducer, and The ultrasonic vibrating rod 32 connected to the horn, the ultrasonic vibrating rod 32 extends into the reactor body 11.

In this example, the upper part of the reactor body 11 and the reactor cover 12 are detachably connected through the bolt and screw connector 5.

In this example, the ultrasonic vibration device is a conventional device in the prior art. This application uses the ultrasonic vibration dispersion effect generated after the ultrasonic vibration rod 32 is inserted into the material, so that the inorganic nanoparticles are uniformly dispersed, and then combined with the common stirring device The function integrates the dispersion and surface modification of inorganic nanoparticles, and improves work efficiency and work effect. Specifically, the frequency of the ultrasonic vibration device may be 2×10 4 to 10 7 Hz, and the power may be 500-3000W.

In this example, the ultrasonic vibrating rod 32 extends in the up and down direction to facilitate the insertion of the ultrasonic vibrating rod 32 into the material. Specifically, the ultrasonic vibration device has at least two and is symmetrically distributed around the stirring device, so that all positions in the reactor body 11 can be subjected to the ultrasonic vibration dispersion effect.

In this example, the stirring device includes a driving part 21 (a conventional variable frequency speed-regulating motor can be used) fixedly arranged on the reactor cover 12 through a support frame, a coupling 22 that is connected to the driving part 21 in transmission, and a coupling 22 is a stirring shaft 23 which is connected in transmission and passes through the reactor cover 12 and extends into the reactor body 11, and a stirring blade arranged at the lower part of the stirring shaft 23.

In this example, there are at least two stirring blades, which are sequentially arranged on the stirring shaft 23 in the vertical direction. Specifically, the stirring blade has a first disc stirring blade 24 arranged at the lower end of the stirring shaft 23, a second disc stirring blade 25 arranged above the first disc stirring blade 24, and the first disc stirring blade The paddle 24 is located under the ultrasonic vibrating rod 32, and the ultrasonic vibrating rod 32 is located on the outside of the second disc-type stirring blade 25. The purpose of setting two stirring blades is to make the materials inside stir uniformly, and at the same time stir the blades and The mutual positional relationship of the ultrasonic vibrating rods 32 enables the forces of the two to interact, thereby causing internal turbulence to further improve the dispersibility of the material, that is, to further improve the dispersibility of inorganic nanoparticles for thorough modification.

In this example, the first disc stirring blade 24 includes a blade body and a plurality of blades formed on the outer periphery of the blade body. The corresponding arc-shaped part at the bottom of the reactor body 11 can be arranged at intervals to increase the force generated by the materials in different directions during the stirring process, and the materials will further collide with each other, so that the materials are excellently dispersed.

In this example, the reactor barrel 1 also includes a heat transfer jacket 13 (which can be passed through a cooling or heating medium) coated on the reactor body 11, and an insulation layer 14 coated on the outer wall of the heat transfer jacket 13. The heat jacket 13 has a heat exchange fluid inlet 131 and a heat exchange fluid outlet 132 respectively passing through the thermal insulation layer 14. The heat exchange fluid inlet 131 is located at the lower part of the heat transfer jacket 13, and the heat exchange fluid outlet 132 is located at the bottom of the heat transfer jacket 13 Upper part.

In this example, the reactor barrel 1 further includes a discharge pipe 15 arranged at the bottom of the reactor body 11 and passing through the heat transfer jacket 13 and the insulation layer 14 respectively.

In this example, the reactor cover 12 is provided with a hand hole 121, a material sight glass 122, a thermometer socket 123, and a flange 124 for fixing the ultrasonic vibration device.

In this example, the reactor barrel 1 includes a plurality of ear supports 4 arranged on the reactor body 11 and passing through the heat transfer jacket 13 and the insulation layer 14.

In summary, the present application realizes the easy replacement of the entire device through the cooperation of the detachably connected reactor cover 12 and the reactor body 11, combined with the stirring device and the ultrasonic vibration device provided on the reactor cover 12, The advantages of adjustment, especially the combination of high-speed stirring and shearing and ultrasonic dispersion, can realize the effective dispersion of inorganic nanoparticles while realizing surface modification, which not only simplifies the operation steps, but also greatly improves the dispersion and modification effects, and avoids inorganic nanoparticles. The incomplete modification caused by the agglomeration effect of nanoparticles makes the modified inorganic nanoparticles achieve monodispersion and truly exert the nanometer effect.

The above embodiments are only to illustrate the technical ideas and features of this application, and their purpose is to enable those familiar with this technology to understand the content of this application and implement it accordingly, and cannot limit the scope of protection of this application. Equivalent changes or modifications made to the spirit and substance shall be covered by the scope of protection of this application.

Claims

A dispersion reactor comprising a reactor cylinder and a stirring device partially arranged inside the reactor cylinder, characterized in that the reactor cylinder includes a reactor body and is The reactor body is detachably connected and used to cover the reactor body of the reactor body, and the stirring device partially penetrates the reactor body to extend into the reactor body; the dispersion reactor also Including an ultrasonic vibrating device, the ultrasonic vibrating device including an ultrasonic generator arranged on the reactor cover, an ultrasonic transducer connected to the ultrasonic generator, and an horn connected to the ultrasonic transducer , And an ultrasonic vibrating rod connected to the horn, the ultrasonic vibrating rod extends into the reactor body.
The dispersion reactor according to claim 1, wherein the ultrasonic vibrating rod extends in a vertical direction.
The dispersion reactor according to claim 1 or 2, wherein the ultrasonic vibration device has at least two and is symmetrically distributed around the stirring device.
The dispersion reactor according to claim 1, wherein the stirring device comprises a driving part fixedly arranged on the cover of the reactor through a support frame, a coupling connected with the driving part, and The coupling is drivingly connected to a stirring shaft that passes through the reactor cover and extends into the reactor body, and a stirring blade arranged at the lower part of the stirring shaft.
The dispersion reactor according to claim 4, wherein the stirring blade has at least two and is sequentially arranged on the stirring shaft in an up and down direction.
The dispersion reactor according to claim 5, wherein the stirring blade has a first disc stirring blade arranged at the lower end of the stirring shaft, and is arranged above the first disc stirring blade The second disc stirring blade, the first disc stirring blade is located below the ultrasonic vibrating rod, and the ultrasonic vibrating rod is located outside the second disc stirring blade.
The dispersion reactor according to claim 6, wherein the first disc stirring blade comprises a blade body and a plurality of blades formed on the outer periphery of the blade body, and the plurality of blades are paired by two. There is a gap therebetween, and the lower part of the blade body protrudes downward to form an arc-shaped part that is compatible with the bottom of the reactor body.
The dispersion reactor according to claim 1, wherein the reactor barrel further comprises a heat transfer jacket coated on the reactor body, and a heat preservation jacket coated on the outer wall of the heat transfer jacket Layer, the heat transfer jacket has a heat exchange fluid inlet and a heat exchange fluid outlet respectively passing through the insulation layer, the heat exchange fluid inlet is located at the lower part of the heat transfer jacket, and the heat exchange fluid outlet is located at The upper part of the heat transfer jacket.
The dispersion reactor according to claim 8, wherein the reactor barrel further comprises a discharge pipe arranged at the bottom of the reactor body and respectively passing through the heat transfer jacket and the insulation layer .
The dispersion reactor according to claim 1, wherein a hand hole, a material sight glass, a thermometer socket, and a flange for fixing the ultrasonic vibration device are respectively provided on the reactor cover.