Views: 0 Author: Site Editor Publish Time: 2023-04-11 Origin: Site Inquire
Shanghai Lantai microwave extrusion technology utilizes the radiation conduction of electromagnetic energy. Microwave can be transmitted into the interior of the material, absorbed by water and instantaneously converted into heat energy, then generates intense molecular vibration, obtains kinetic energy, and realizes the vaporization of water.
The internal and external temperatures of the material rise simultaneously, resulting in the relative humidity of the material surface is low due to moisture evaporation. The temperature gradient direction is from the outside to the inside. The direction of temperature gradient, heat conduction and water vapor migration are consistent, so the rapid evaporation speed of moisture is conducive to the generation and accumulation of internal steam, which rapidly heats up and vaporizes the internal moisture, pressurizes it, and generates a powerful radial driving force that drives the internal steam directly out of the body. The temperature difference in the same direction as the pressure difference strengthens the direct discharge of steam, resulting in a "pumping effect" of steam. When the internal steam pressure reaches or exceeds the structural tension of the cell, it will cause the cell to expand, leading to the overall expansion of the material, forming a loose and uniform microporous structure. Expanded materials mainly rely on the physical and chemical properties of the material to form a certain texture, which is conducive to wrapping water vapor and accumulating pressure. In addition, it also relies on its dielectric properties to absorb microwave energy and effectively convert it into thermal energy.