What is a vacuum drying oven? What's the role? Do you have any good brand recommendations?

Vacuum drying oven and blast drying oven are two commonly used drying equipment. We know that to dry dry materials, it is nothing more than direct heating, vacuum and negative pressure dehumidification to achieve the purpose of drying. However, what is the difference between the two?

Through direct heating, of course, there is an auxiliary way of blowing air, which is to make the molecules of water, solvent or volatile components in the material move quickly to get rid of the dry material and make the material gradually dry. Its drying speed can be very fast and drying temperature can be very high.

Especially under the action of the blower, the volatile substance molecules volatilized on the surface of the material are quickly taken away by air exchange, so as to achieve the function of quickly drying the material.

Vacuum drying oven is a kind of vacuum pump, which draws the space where the dried materials are located into negative pressure, which is called vacuum state. We know that under vacuum or low pressure, the boiling points of water, solvents and other volatile components in the material decrease, so that they can leave the surface of the material particles and be pumped away by a vacuum pump at a lower temperature. Mainly used for materials with chemical reactions such as oxidation and polymerization at high temperature. Of course, it also has the dual function of heating, accelerating the volatilization of water, solvents and volatile components, thus leaving the surface of the material.

To sum up, the difference between the two applications lies in the stability of the chemical properties of the dried material and the requirements of physical deformation of the dried material.