CN210675130U

CN210675130U - Preparation equipment of functional nanometer microballon

Info

Publication number: CN210675130U
Application number: CN201920691155.2U
Authority: CN
Inventors: 黄琛; 鲍余薇; 李晨欣
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-14
Filing date: 2019-05-14
Publication date: 2020-06-05
Anticipated expiration: 2029-05-14

Abstract

The utility model relates to a preparation equipment of functional nanometer microballon, it includes atomizer and the direct voltage application device that is used for making the droplet that the atomizer produced to take charge. The utility model discloses can overcome the shortcoming that high voltage electrostatic spinning preparation nano-material productivity is low, prepare functional nanometer microballon through spraying preparation and electrostatic field combined action. The utility model discloses simple structure prepares nanometer microballon through the spraying, can improve the productivity by a wide margin, and the nanometer microballon specific surface of preparation is big.

Description

Preparation equipment of functional nanometer microballon

Technical Field

The utility model relates to a preparation of functional nanometer microballon, especially preparation equipment of nanometer microballon.

Background

In chemical reaction and chemical analysis, in order to increase the contact probability of active groups such as sulfydryl, carboxyl, benzene ring, olefin and the like with other compounds, a common chemical active group-containing compound is prepared into nano-fibers by using high-voltage electrostatic spinning equipment, the advantages of small-size effect and the like of the nano-material and high activity of the functional groups are exerted, but the conventional high-voltage electrostatic spinning needs high sample viscosity, otherwise, the nano-size required by the size of a monofilament can not be reached by electric field force in an effective time under the maintenance of the viscosity, so that the effect of increasing the specific surface area is achieved, the preparation efficiency is lower, and the low yield is always a main factor for limiting the application of the nano-material prepared by the high-voltage electrostatic.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: in order to overcome the defect of low productivity of the nano material prepared by high-voltage electrostatic spinning, the preparation equipment of the nano functional microsphere is provided, and the functional nano microsphere can be prepared by the comprehensive action of spray preparation and electrostatic field.

The utility model discloses a solve the above-mentioned solution that adopts of problem that proposes and do:

the preparation equipment of the functional nano-microsphere comprises an atomizer and a direct-current voltage application device for charging fog drops generated by the atomizer.

In the above scheme, one section of the liquid input pipeline of the atomizer is a metal capillary, and the direct-current voltage applying device applies voltage to the metal capillary.

In the above aspect, the atomizer includes a metal member therein, and the dc voltage applying device applies a voltage to the metal member.

In the above scheme, the voltage applied by the dc voltage applying means is 10 to 30 kv.

In the above scheme, the preparation equipment further comprises an airflow channel, the atomizer is arranged in the airflow channel, and the spraying direction of the atomizer is the same as the airflow direction in the airflow channel.

In the above scheme, a nanometer microsphere collecting plate is further arranged in the airflow channel, and the collecting plate is arranged in front of the spraying direction of the atomizer.

In the above scheme, the collecting plate has charges, and the charges on the collecting plate have different polarities from the charges on the atomized liquid.

In the scheme, a focusing ring is further arranged in the airflow channel, the focusing ring is provided with direct current voltage, and the direct current voltage carried on the focusing ring has the same polarity as the charge carried on the atomized liquid; the focusing ring is disposed between the atomizer and the collecting plate, and the atomized liquid generated by the atomizer passes through the focusing ring.

In the above scheme, a filter screen is further arranged in the air flow channel, the filter screen is arranged between the atomizer and the focusing ring, and mist generated by the atomizer passes through the filter screen.

In the scheme, the pipe diameter of the input pipeline is 0.1-1 mm.

The utility model discloses a theory of operation does: the atomizer atomizes the liquid to form fog drops, the direct-current voltage applying device enables the fog drops generated by the atomizer to have electric charges, the static electricity enables the surface activity of the fog drops to be increased, liquid surface molecules are directionally arranged, and the surface tension is reduced, so that the fog drops can be favorably broken; at the same time, the same kind of charge repulsion force makes the liquid surface form an internal and external pressure difference, and the direction of the force is opposite to the surface tension. Along with the motion of the fog drops in the air, the solvent in the fog drops is quickly evaporated, the fog drops become small, the electric charges are gathered, the height of a local electric field is strengthened, the fog drops burst, the fog drops are further reduced, and the size of the fog drops is reduced to micron or even nano level.

The utility model discloses simple structure prepares nanometer microballon through the spraying, can improve the productivity by a wide margin, and the nanometer microballon specific surface of preparation is big.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.

Fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.

Fig. 3-7 are electron micrographs of the nanospheres prepared in example 2 of the present invention.

Fig. 8-12 are statistical graphs of the particle sizes of several nanoparticles prepared in example 2 of the present invention.

In the figure: 1-atomizer, 2-metal capillary, 3-input pipeline, 4-metal part, 5-airflow channel, 6-collecting plate, 7-focusing ring, 8-insulating filter screen, 9-air compressor, 10-galvanostat, 11-peristaltic pump, and 12-DC high voltage.

In the figure, the direction of the hollow arrow is the direction of the high-pressure gas, and the direction of the solid arrow is the direction of the sprayed liquid.

Detailed Description

Fig. 1 shows an embodiment 1 of the apparatus for preparing nano-microspheres according to the present invention, which includes an atomizer 1 and a dc voltage applying device for charging droplets generated by the atomizer. The atomizer 1 comprises a metal part 4 beside an input pipeline 3, and the direct current voltage applying device is a device for applying voltage (direct current high voltage 12) to the metal part 4. The voltage applied by the direct current voltage applying device is 20-30 kilovolts. A collecting plate 6 is arranged in front of the atomizer 1 in the spraying direction.

Fig. 2 shows an embodiment 2 of the apparatus for preparing nano-microspheres according to the present invention, which comprises an atomizer 1, an air flow channel 5, and a dc voltage applying device for applying positive charges to droplets generated by the atomizer. The direct-current voltage applying device comprises a metal capillary tube 2 for applying voltage, and the metal capillary tube 2 is sleeved on a liquid input pipeline 3 of the atomizer. The humidity in the airflow channel 5 is controlled below 30%, and the temperature is controlled at 45-50 ℃.

An air inlet pipeline of the atomizer 1 is communicated with an air compressor 9 through a constant flow device 10, and the air flow is controlled to be 0.8-1.2 liters per minute. The liquid input pipeline 3 of the atomizer 1 is provided with a peristaltic pump 11, and the spraying liquid is controlled to be 0.2-1 ml per minute.

The atomizer 1 is arranged in the airflow channel 5, and the spraying direction of the atomizer 1 is the same as the airflow direction in the airflow channel 5. The airflow channel 5 is also internally provided with a nanometer microsphere collecting plate 6, and the collecting plate 6 is arranged in front of the spraying direction of the atomizer 1. The collecting plate 6 is negatively charged, and the polarity of the direct current voltage on the collecting plate 6 is different from that of the charge on the atomized liquid. The distance between the nozzle of the atomizer 1 and the collecting plate 6 is 30-50 cm, the solvent is too close to volatilize, and the electric field intensity drops too far away.

A focusing ring 7 is also arranged in the airflow channel 5, direct current voltage is carried on the focusing ring 7, and the polarity of the direct current voltage carried on the focusing ring 7 is the same as that of the electric charge carried on the atomized liquid; the focusing ring 7 is arranged between the atomizer 1 and the collecting plate 6, atomized liquid generated by the atomizer 1 passes through the focusing ring 7, and the droplets are focused by utilizing the principle that like poles repel.

An insulating filter screen 8 is further arranged in the air flow channel 5, positive charges are carried on the insulating filter screen 8, the insulating filter screen 8 is arranged between the atomizer 1 and the focusing ring 7, fog drops generated by the atomizer 1 penetrate through the insulating filter screen 8, and large fog drops are intercepted, so that the nano particles are more uniform.

The input pipeline 3 is a capillary, and the pipe diameters of the input pipeline 3 and the metal capillary 2 are both 0.1-1 mm.

Use the utility model discloses embodiment 2 preparation enrichment mercury nanoparticle, its function reaches through the dodecanethiol, and the carrier uses cellulose acetate to through N, N-dimethylacetamide, acetone dissolves, and the alkane part of dodecanethiol is close to and exposes the sulfydryl at the surface of mixture with the cellulose acetate after the drying.

The nanosphere structure prepared by diluting 45. mu.l dodecanethiol, 0.1 g cellulose acetate, and 1.5 ml of 1: 2N, N-dimethylacetamide acetone solution to 15 ml is shown in FIGS. 3-7.

The utility model discloses example 2 is used to prepare the nanometer particle, and the liquid of input atomizer is 14ml + stoste 1ml of diluent DMAC/acetone (1:2), and the voltage that the direct voltage applied device was applied is 20kv, and the time of spraying is 24min, and the statistics of nanometer microballon particle size of preparation is shown in figure 8, and the particle diameter of the particle of collecting under this condition is mostly less than 500 nm.

Use the utility model discloses embodiment 2 prepares the nanometer particle, and the liquid of input atomizer is diluent acetone 14ml + stoste 1ml, and the voltage that the direct voltage applied device was applyed is 20kv, and the spraying time is 15min, and the nanometer microballon particulate matter size statistics of preparation is shown in figure 9, and the particulate matter particle diameter of collecting under this condition is mostly less than 500 nm.

Use the utility model discloses embodiment 2 preparation nanometer particle, the liquid of input atomizer is diluent acetone 14ml + stoste 1ml, and the voltage that the direct voltage applied device was applyed is 30kv, and the spraying time is 15min, and the nanometer microballon particulate matter size statistics of preparation is shown in figure 10. The particle size of the particles collected under the condition is mostly less than 100 nm.

The utility model discloses example 2 is used to prepare the nanometer particle, and the liquid of input atomizer is 14ml + stoste 1ml of diluent DMAC/acetone (1:2), and the voltage that the direct voltage applied device was exerted is 10kv, and the time of spraying is 21min, and the statistics of nanometer microballon particle size of preparation is shown in figure 11, and the particle diameter of the particle of collecting under this condition is mostly less than 500 nm.

Use the utility model discloses embodiment 2 prepares the nanometer particle, and the liquid of input atomizer is diluent acetone 14ml + stoste 1ml, and the voltage that the direct voltage applied device was applyed is 10kv, and the spraying time is 15min, and the nanometer microballon particulate matter size statistics of preparation is shown in figure 12, and the particulate matter particle diameter of collecting under this condition is mostly greater than 500 nm.

Therefore, in order to obtain smaller particles and improve the preparation efficiency, pure acetone is selected as diluent and sprayed at a voltage of more than 20 kv.

Claims

1. A preparation equipment of functional nanometer microballon which characterized in that: it comprises an atomizer (1) and a direct voltage application device for charging the droplets produced by the atomizer.

2. The manufacturing apparatus of claim 1, wherein: one section on the liquid input pipeline of the atomizer is a metal capillary tube (2), and the direct-current voltage applying device applies voltage to the metal capillary tube (2).

3. The manufacturing apparatus of claim 1, wherein: the atomizer (1) comprises a metal part (4), and the direct-current voltage applying device applies voltage to the metal part (4).

4. The manufacturing apparatus of claim 1, wherein: the voltage applied by the direct current voltage applying device is 10-30 kilovolts.

5. The manufacturing apparatus of claim 1, wherein: the air flow atomizer is characterized by further comprising an air flow channel (5), the atomizer (1) is arranged in the air flow channel (5), and the spraying direction of the atomizer (1) is the same as the air flow direction in the air flow channel (5).

6. The manufacturing apparatus as set forth in claim 5, wherein: the air flow channel (5) is also internally provided with a nano microsphere collecting plate (6), and the collecting plate (6) is arranged in front of the spraying direction of the atomizer (1).

7. The manufacturing apparatus as set forth in claim 6, wherein: the collecting plate (6) is provided with charges, and the charges on the collecting plate (6) have different polarities from the charges on the atomized liquid.

8. The manufacturing apparatus as set forth in claim 6 or 7, wherein: a focusing ring (7) is also arranged in the airflow channel (5), direct current voltage is carried on the focusing ring (7), and the polarity of the direct current carried on the focusing ring (7) is the same as that of the electric charge carried on the atomized liquid; the focusing ring (7) is arranged between the atomizer (1) and the collecting plate (6), and atomized liquid generated by the atomizer (1) passes through the focusing ring (7).

9. The manufacturing apparatus of claim 8, wherein: a filter screen (8) is further arranged in the air flow channel (5), the filter screen (8) is arranged between the atomizer (1) and the focusing ring (7), and fog drops generated by the atomizer (1) pass through the filter screen (8).

10. The manufacturing apparatus as set forth in claim 2, wherein: the pipe diameter of the input pipeline (3) is 0.1-1 mm.