By Aveka Inc
AVEKA uses liquid nitrogen to lower the temperature of the material and/or the milling process. AVEKA uses cryogenic hammer mills that can typically reduce the particle size from small pellets down to the 100s of microns. Cryo-milling can be used for: - Reducing the material temperature below its glass transition temperature (T g), which is the point at which a polymer goes from a brittle, glassy state (low temperature) to an elastic, rubbery state (higher temperature). Materials below their T g are generally friable to some degree. - Keeping the mill and material from overheating. Hard to mill materials generate a lot of heat during milling, and materials must stay below their melt temperatures or softening points to be friable. - Temperature control to prevent hazardous decomposition during impact of the mill - Oxygen (or other gases) exclusion to prevent degradation of the milled material when new surfaces are formed Capabilities and Equipment Specs - FitzMill JT Homoloid (2) - FitzMill M5A – food grade - FitzMill DASO6 - FitzMill DKASO12 - CryoAuger - SpexMill Factors to Consider - Is the material sensitive to heat? - What is the final desired particle size? - What is the starting particle size? - Is the material friable? - What is the maximum allowable temperature during milling? - Is the material abrasive?
