Aerogel - 1
Manufacturing of Aerogel
Aerogel was found by Steven Kistler in 1931, but its application cannot be in the market and consumer because there is no item that can use the aerogel. The 1980s the aerogel have a place to be a raw material in existing and new product after they discover a new research about aerogel. They have been considered as a new development material that better than polyurethane foam in refrigerators, and as a heat insulator for windows.
Aerogel is produced by removing all the water from a colloidal silica gel without collapse its overall structure. When gels get dry normal temperatures and pressures its affect the surface tension in tiny pores of the gel causes the structure to collapse and reduce itself to roughly 10 times its original volume. To produce aerogel, a gel is placed in a vessel of high heat (280°C or 536°F) and pressure (1800 pounds per square inch, or 1241 Newton’s per square centimeter). This causes all the liquid within the gel to transform into a supercritical state, allowing a phase transition from liquid to gas without the absence of shrinkage which causes a gel structure to collapse and fully dry. This process is known as supercritical drying process. Before they discover the process, it took days to create aerogels, but improvements have short the drying time to a few hours. The process still needs a high energy, leading to the high cost of aerogels.
Aerogels also known as a space age material which is in one day it can be used in a many ways of applications and in material from insulation for housing to new forms of artwork. Many young researchers are make a research on focusing the aerogel, mixing aerogel with filler such as carbon to increase its insulating properties, or working to reduce pore size to make aerogel as transparent as possible. There are many ways for future research and many potential applications if this research successful.
Silica Gel
Silica gel is a mixed substance made from silicon silicate that is
Aerogel was found by Steven Kistler in 1931, but its application cannot be in the market and consumer because there is no item that can use the aerogel. The 1980s the aerogel have a place to be a raw material in existing and new product after they discover a new research about aerogel. They have been considered as a new development material that better than polyurethane foam in refrigerators, and as a heat insulator for windows.
Aerogel is produced by removing all the water from a colloidal silica gel without collapse its overall structure. When gels get dry normal temperatures and pressures its affect the surface tension in tiny pores of the gel causes the structure to collapse and reduce itself to roughly 10 times its original volume. To produce aerogel, a gel is placed in a vessel of high heat (280°C or 536°F) and pressure (1800 pounds per square inch, or 1241 Newton’s per square centimeter). This causes all the liquid within the gel to transform into a supercritical state, allowing a phase transition from liquid to gas without the absence of shrinkage which causes a gel structure to collapse and fully dry. This process is known as supercritical drying process. Before they discover the process, it took days to create aerogels, but improvements have short the drying time to a few hours. The process still needs a high energy, leading to the high cost of aerogels.
Aerogels also known as a space age material which is in one day it can be used in a many ways of applications and in material from insulation for housing to new forms of artwork. Many young researchers are make a research on focusing the aerogel, mixing aerogel with filler such as carbon to increase its insulating properties, or working to reduce pore size to make aerogel as transparent as possible. There are many ways for future research and many potential applications if this research successful.
Silica Gel
Silica gel is a mixed substance made from silicon silicate that is