Ichemco Internal Test Methods
Softening Point, Ring & Ball
|Put the rings on a siliconed paper sheet and pour the melt product into each ring, trying to avoid air bubbles .
Let the product cool and became solid, levelling the surface with a blade, then let at room temperature for 30 minutes.
Put the rings on the structure and the structure into the glycerol bath.
The rings must be at 5 cm below the glycerol level
Insert the thermometer in the bath, start stirring (speed 500 rpm) and heating. At 30 °C put the steel spheres in the middle of the rings and wait for some minutes (spheres conditioning).
Then start heating (temperature gradient = 5 °C/min, check with a cronometer).
Read the temperature when the spheres reach the bottom of the structure.
|Brass rings and structure for R&B measurement
600cc becker filled with glycerol
Siliconed paper, blade
|Record the measured temperatures together with sample data