Ichemco Internal Test Methods
Softening Point, Ring & Ball
| Id: | 4 |
| Measure unit: | °C |
| Procedure: | 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. |
| Remarks: | |
| Instruments: | Brass rings and structure for R&B measurement 600cc becker filled with glycerol Stirrer Siliconed paper, blade |
| Recordings: | Record the measured temperatures together with sample data |
| External references: | ASTM D36 |
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