Abstract
The thermal analysis of copper fiber, which was manufactured by the method of glass conjugated melt spinning in changing the winding speed and cooling treatment and removed the glass in dissolving into alkali solution, have been studied in the temperature from 20°C to 450°C.
The exothermic change of the heat capacity at 250°C-350°C was found in differential scanning calorimetry. The value of differential power output (ΔJ) and starting change temperature (Tt) depended on the heating rate (φ). ΔJ and Tt were increased by increasing the heating rate. This change was considered as the release of stored energy in spinning. The relationship between the φ and Tt was represented ln (φ/Tt)=C-E/RTt, where E is the apparent activation energy, R the gas constant and C constant.
Activation energy was obtained to be 14.0 Kcal/mol and gave reasonalbe agreement with that of self-diffusion of of copper.
Tensile strength decreased and elongation increased on heating at 370°C for 5 min.
