1. Overview
Due to the high specific surface area of aerogels, their materials have broad application prospects in aerospace, catalysis, environmental protection, medical and other fields. The preparation and drying technology of aerogels has become a new field of chemical engineering research.
Since the supercritical fluid has the properties of both gas and liquid, there is no gas-liquid interface, so there is no surface tension. At this time, there is no additional pressure generated by surface tension in the gel capillary hole. Therefore, the gel is dried under supercritical fluid conditions, which does not produce the collapse of the gel structure caused by additional pressure, avoids the shrinkage of the gel during the drying process, maintains the gel network frame structure, and produces ultrafine aerogels with high specific surface area, uniform particle size distribution and large pore volume.
Based on the practical application of the original supercritical aerogel drying device, our company has improved and upgraded the products according to the research trend in this field, and carried out a series of upgrades to the two systems of dryer and pressure control to further improve the applicability of the products.
Main technical parameters of 2.
1. Working pressure: 30MPa
2. Maximum working temperature: room temperature ~ 85 ℃
3. Volume of gel dryer: 5L/30MPa,85 ℃