Nano material disperser by blending method

Nano material disperser by blending method

Nanomaterials refer to：In terms of size, small particles that typically undergo significant changes in physical and chemical properties have a size of less than 0.1 micrometers (note: 1 meter=1000 millimeters, 1 millimeter=1000 micrometers, 1 micrometer=1000 nanometers), or less than 100 nanometers. Therefore, particles with a size of 1 to are called ultrafine particle materials, which are also a type of nanomaterial.

Nano material blending method high-speed disperserWhen solid particles are dispersed into a liquid, they form a suspension. When one liquid is dispersed into another liquid, an emulsion is formed. At the interface between two liquid phases of an emulsion, surface tension begins to act. The generation of new surfaces requires energy. Without external influence, each liquid phase system attempts to reach an emulsion state with less energy. Therefore, there is always a tendency to generate smaller interfaces, which hinders the formation of any emulsion.

blending methodIt is to use nano SiO2A type of composite material obtained by directly dispersing and mixing with polymers. The characteristic of this type of method is that the process is relatively simple and easy to industrialize. Its disadvantage is that it requires nano SiO2It is difficult for particles to be uniformly dispersed at the nanoscale in their original state, which also brings new problems to the stability of the product. For this purpose, the following different processes have also been developed.

(l) Solution blending method dissolves the polymer in a solvent and then adds nano-SiO2Particles are mixed and uniformly dispersed, and the solvent is removed to obtain a composite material, which is characterized by nano SiO2The dispersion of particles is good, but it also brings problems such as environmental pollution and solvent recovery.

(2) Suspension blending method

(3) Lotion blending

(4) The liquid blending method is similar, except that suspension or lotion is used instead of solution. In some cases that are not suitable for solution blending, suspension or lotion blending is also a useful method.

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The high-speed disperser plays an important role in current industrial production, with a wide range of applications, complete functions, and multiple functions. The IKN disperser was developed due to the continuous development of industry. The speed of the IKN high-speed disperser is faster than other dispersers, which can quickly crush, disperse, and mix materials of different viscosities in a short period of time. It is one of the more advanced disperser equipment in industrial production.

High speed dispersers are not only used as dispersing equipment, but also for industrial production in industries with multiple fineness requirements such as chemical and food industries. It is possible to crush a large amount of pigments that can be initially gathered together, which can evenly mix the pigments with the paint surface. The dispersion and grinding effect is good, and the work efficiency is relatively high. It is favored by a large number of users in the market.

Analysis of Equipment Structure and Characteristics:

GRS2000The online ultra high speed and high shear emulsifying and dispersing machine consists of a driving motor, a dispersing head of GRS2000 module, and a cooling tank structure. The driving motor adopts a continuously variable speed three-phase asynchronous motor to drive the belt, which can achieve better operational control of mixed and dispersed speed. The rotor linear speed reaches 40m/s and has good shear force. The GRS2000 module, which is a key component for achieving the requirements of mixed dispersed particle size, consists of two layers of dispersing heads. The dispersing head is composed of stator teeth and rotor teeth, forming an ideal geometric shape for dispersing shear. Under the drive of the motor, the average linear velocity obtained in the gap between the teeth is very high, and a shear rate of up to 10000rpm can be achieved to obtain ultrafine suspensions, which is of great significance for vaccine production. The cooling tank is filled with a specific liquid (water or dispersed material), which can cool and lubricate the mechanical seal of the dispersing equipment during high-speed operation by forming a circulation loop through a metal connecting hose at the bottom of the dispersing chamber, ensuring its normal and efficient operation during long-term production.

The nano material disperser GRS2000 adopts * * components and strives to optimize and combine them to create outstanding artistic grade industrial products in all aspects. This requires years of experience accumulation, as well as technological accumulation, and more importantly, the ability to transform experience and technology into innovation. SGN emulsification machine, through the input of large energy, namely, the strong kinetic energy brought by the high tangent speed and high-frequency mechanical effect caused by the high-speed rotation of the rotor, makes the materials subject to strong mechanical and hydraulic shearing, centrifugal extrusion, liquid layer friction, impact tearing and turbulence in the narrow gap between the stator and rotor, forming suspension (solid/liquid), lotion (liquid/liquid) and foam (gas/liquid). The essence of emulsification and dispersion is the process of work by which immiscible two or more phases are wrapped around each other through the input of energy, resulting in an approximately stable and homogeneous state. That is to say, the condition for the formation of lotion or suspension is that at a certain energy level, the agglomeration speed and dispersion speed of various droplets reach a dynamic balance.
Nano material disperser by blending method

1、 Nano material disperserERS2000Comparison between series products and traditional equipment:
1Traditional equipment requires an 8-hour dispersion process, while GRS2000 equipment can complete it in 1 hour, making it more efficient and energy-saving.

2The stirring speed of traditional equipment is several tens of revolutions per minute, and the speed with dispersion function is also within 1500 revolutions per minute, while the GRS2000 series can reach 5000-6000 revolutions per minute, which is even faster. The shear force generated by the ultra-high linear velocity instantly refines and disperses the material, resulting in higher quality products.

2、 Nano material disperserGRS2000Comparison between product series and similar devices:

1Heating issue. During the processing of similar equipment, when high viscosity materials enter the cavity, the conveying effect is poor due to the high back pressure, resulting in the materials staying in the equipment cavity for too long and causing severe heating. The GRS2000 series equipment reduces back pressure resistance, improves conveying capacity, reduces dwell time, and reduces material heating while ensuring effectiveness.
2Multi layer multi-directional shear dispersion. The structure of components such as the stator and rotor of similar equipment is single, and the multi-level and multi-layer structure is only a simple repetitive processing. The same tooth groove structure is prone to short circuiting of biological materials passing through the working chamber without dispersion. The GRS2000 series stator and rotor structure adopts the concept of multi-layer multi-directional shearing, and the assembled structure allows materials to be sheared and dispersed in different directions, eliminating short circuits and achieving more thorough ultrafine dispersion.

Nano material disperser by blending method

3、 Comparison between GRS2000 product series and horizontal emulsifier:
1Speed and shear force:
Domestic emulsifier, the speed of the 3000/4700 RPM direct coupled motor determines the rotor speed
Linear speed: V=3.14X0.55X3000/60=9M/S V=3.14X0.55X4700/60=14M/S
Force: F=9/0.3X1000-=30000S-1 F=14/0.3X1000=42000S-1
ERS2000Product series, 9000/14000RPM accelerated by belt
Linear velocity: V=3.14X0.055X90000/60=26M/S V=3.14X0.055X14000/60=44M/S
Force: F=23/0.2X1000=115000S-1 F=40/0.2/X1000=200000S-1
Force is an important factor in emulsification and homogenization, with the latter being 4-5 times greater than the former

2Equipment design and construction:
Domestic emulsifiers have a bedroom direct connection structure, which runs for a long time and can easily cause shaft eccentricity and abnormal operation. Professional personnel are needed to dismantle the internal structure for replacement. And it is necessary to replace the damaged emulsifying head and shaft.
Nano material disperserGRS2000Product series, vertical split structure, long operating time, not easy to cause shaft eccentricity, easy to replace, and as long as the corresponding belt is replaced, ordinary personnel can operate.

3Sealing:
Domestic emulsifiers, packing seals or skeleton seals, single mechanical seals or shaft seals have a high leakage failure rate, and product leakage enters the motor, causing the motor to burn out
Nano material disperserGRS2000Our product series features dual mechanical seals that are easy to clean and reduce leakage to a minimum. It can operate continuously for 24 hours and has a special German PDFE shaft seal that can run for 10000 hours. We can choose high-quality German mechanical seals. In general, our mechanical seals can withstand a pressure of 16 bar, which is generally 2-3 bar higher than the pressure of the sealing chamber. This determines that our inlet pressure can reach 12-13 bar.

4Product effect:
Domestic emulsifiers have limited particle size and fineness, making it difficult to achieve particle sizes below 10 microns. The repeatability is poor, and the product particle size distribution is uneven
Nano material disperserGRS2000The product series can achieve particle processing of 0.1-1 microns, with uniform particle size distribution and nanoscale dispersion emulsification

5、Nano material disperserGRS2000Characteristics of the product series:
① It has a very high shear speed and shear force, and a particle size of about 0.1-1 micron can ensure the stability of high-speed dispersion and emulsification.
② This device can be applied to various dispersion emulsification processes, as well as for the production of homogeneous mixtures including emulsions, suspensions, and colloids.
③ The shear force generated by the stator and rotor systems of the three-stage emulsifier increases the solute transfer speed, thereby accelerating the decomposition of single molecules and macroscopic molecular media