Why Use a Vacuum Mixer?
Vacuum mixers can improve the quality of a product by mixing ingredients at lower temperatures. They also allow for faster processing and reduce the risk of contamination.
MSK-SFM-7 is a UL/CSA ready compact dual-shaft planetary vacuum mixer. It is ideal for preparing battery electrode paste and various ceramic materials in material research labs.
Preparation of cements and amalgam
A vacuum mixer is a piece of equipment used for processing viscous materials in an inert atmosphere. This process is necessary to prevent gas inclusions in the finished product and is a key part of many manufacturing processes for chemicals, construction materials, pharmaceuticals and food products.
The use of a vacuum mixer in the preparation of cements, amalgams and other medical materials is particularly useful. These materials can tend to fail if air bubbles are present or the ingredients are not thoroughly mixed. The vacuum mixing process prevents the formation of air bubbles and effectively centralizes the components (such as powders and alginates) to create a homogeneous mixture with an even texture that will far outperform a hand-mixed recipe, which is more likely to contain bubbles and other unwanted elements.
Infrared and 13C NMR spectroscopy have shown that the setting of glass-ionomer cements takes place in two steps, first with the formation of ionic crosslinks that are responsible for the initial hardening of the material. Afterwards, a slow reaction involving the formation of metal acetate salts and calcium ions takes place.
The sluggish setting reaction of glass-ionomer cements can be speeded vacuum mixer up by the addition of various compounds that modify the rate of the reaction, such as (+)-tartaric acid or citric acid. Using these compounds, the setting time of these materials is reduced significantly without significantly affecting their radiopacity or fluoride release.
Mixing of gels and pastes
Using a vacuum mixer for the mixing of gels and pastes allows for the production of high quality, stable products. It also reduces the time needed to mix. Moreover, it can avoid the formation of gas inclusions, which are often present in other types of mixers. It is used in the chemical, construction, cosmetic and food industries.
Our Vacuum Triple Shaft Mixer has a water ring type vacuum pump (-0.09Mpa) that draws in air during the mixing process, enhancing product quality and deaerating it. The vacuum-filled agitator also prevents the microbial activity of raw materials and minimizes oxygen content, which can cause powders to easily float on the surface. This helps to shorten processing time and ensures that all the ingredients are evenly distributed within the product.
This lab planetary vacuum mixer is ideal for the lithium electricity experiment process of anode and cathode paste mixing process, as well as a variety of ceramic materials in a material research laboratory. It is programmable in speed, time and rotating direction to meet different process requirements. It has a vibration stage at the bottom, which removes gas bubble and prevents oxidation of the materials during mixing. Its stainless steel tank and a kneading motor guarantee long service life. It can produce coating slurry with low viscosity and high purity, facilitating the preparation of li-battery electrode pastes in a quick and efficient manner.
Drying processes
Many active pharmaceutical ingredients must be converted into user-friendly dosage forms such as chewable tablets, effervescent pills, capsules or suppositories. This requires that the solid, finely particulate active ingredient dusts are bound with liquid binders and then dried. The drying process is usually done using heat, which drives the water to evaporate out of the material, but this can be much more easily accomplished with a vacuum mixer-dryer.
Compared to a conventional mixer, the vacuum mixing machine allows for an efficient exchange of air and product, which reduces oxidation and helps prevent classic rheological phenomena such as shear thinning or thickening. This improves the dispersion quality of the dried product, eliminates aesthetically displeasing voids and impedes microbial growth.
Another advantage of the vacuum mixer-dryer is that it can be used as a batch reactor. This is especially advantageous for processes that require high residual emptying rates.
MIX has developed a system that is able to perform both functions in a single, integrated machine. The powdery raw materials enter the vacuum-proof vessel from above, where they are agitated by two high shear mixers and then dried in a separate vacuum chamber below. The drying chamber can be fitted with a temperature controller and an inertisation system to ensure that the process is carried out at a constant temperature and pressure and is free from contaminants.
Medical and food applications
Vacuum mixing can help to eliminate unsightly air bubbles in products such as coatings, cosmetics or molded composites. It can also be used to degass ingredients, improve dispersion quality and enhance drying processes. This process can also prevent oxidation of air-sensitive ingredients and inhibit chemical reactions and microbial growth.
A vacuum mixer can be used for a variety of medical and food applications, including the blending of pharmaceutical products, cosmetics, and food. For example, a rotary vacuum emulsifying mixer can be used to mix liquid and solid materials, such as ointments and creams. It can also be used to mix powdered materials, such as excipients and binders.
Another important use of a vacuum mixer is the spatulating of stones, plasters, die material and investments for making smooth, dense, and detailed mixer manufacturer casts or impressions. The Whip Mix Vac-U-Mixer allows you to spatulate inlay, crown and bridge patterns completely under vacuum, which helps to produce void-free castings.
Vacuum mixing is accomplished by combining a high-speed mixer with a vacuum pump. Some vacuum mixers have built-in pumps, while others require an external pump. Some vacuum mixers can be used with an optional heating or temperature control device. The most important feature of a vacuum mixer is its ability to create a vacuum environment during the mixing process. This helps to prevent air bubbles from forming in the mixture, which can lead to foaming and a decrease in mixing efficiency.