Dyeing and Printing Knowledge: Measurement of the Residual Fat Percentage of Refining Agents
The scouring agent performance test is mainly carried out by evaluating the scouring effect, that is , use the scouring agent in its conditions to refine, and evaluate the scouring agent effect according to the test results of the fabric as follows. 1. Instrument and agent Soxhlet Oil extractor, carbon tetrachloride. 2. Working process Put the flask of Soxhlet oil extractor and 10g cloth sample into in the oven, dry 1.5 hours under 105℃, take out and cool in the dryer, weight (accurate to 0.0001g). Wrap the weighted sample cloth with the filter paper,put into a reflow extractor of Soxhlet extractor (the filter paper edge height should not exceed the height of the siphon), Add carbon tetrachloride about 200mL (the number should be able to spill over the siphon for 1.5 to 2 times), heating in a water bath. Start to time when there is liquid drop in the bottom end of the condenser tube, the extraction rate should be 5~6 times per hour. the solvent cycle is up to 12 t...