| 摘要 |
FIELD: thermal analysis. ^ SUBSTANCE: method and device involve placement of a weight of substance or material under study in a ceramic crucible and heating of the crucible until loss of mass is finished. In the course of heating, temperature, mass and derivative of mass with respect to time or temperature are measured, and, at the same time, signals of acoustic emission accompanying accumulation of structure defects under action of temperature are received. Then, from the obtained relationships of temperature, mass and derivative of mass with respect to time and from registered acoustic emission parameters, thermodestruction process stages and fire hazard indices are determined. ^ EFFECT: improved reliability and accuracy in determining the stages of thermodestruction of substances and materials as well as basic fire hazard indices: temperatures of melting, sublimation, pyrolysis, inflammation, formation of coke residue. ^ 2 cl, 6 dwg |
