Drying Rate of Textiles at their Absorbent Capacity
AATCC 200-2014 pdf free.Drying Rate of Textiles at their Absorbent Capacity: Air Flow Method.
NOTE: The delivery rate of the wateris important. To keep a constant deliveryrate a gravimetric feed pipette is used todeliver the water. Deliver the water bytouching the pipette to the textile.
10.8 The maximum volume of waterthat is absorbed by the textile withoutpassing through and wetting the papertowel is equivalent to theabsorbentcapacity (vm) for this method.
10.9 Position the IRthermocoupleprobe in the middle of the specimen 1 cmabove the surface.
10.10 Remove the water detection tray.Close port to the shelf.
10.11 Let the specimen dry by waitingfor the temperature to return to the valuedetermined in 10.5.
10.12 Place the anemometer probeabove and near the center of thespecimen. Record air speed through thespecimen.
10.13 Select the maximum amount ofwater to be at least 10%less than vm.Select four additional volumes of water atapproximately 10%,25%,50%, and 75%of the maximum amount. For example, atextile with a Vm=0.470 mL the volumeswould be 0.050,0.100,0.200,0.300, and0.400士 0.001 mL.
10.14 Start the testing process byrecording temperature data and deliver-ing the first of a series of increasingvolumes of water on the specimen in thearea of the IR thermocouple probe view.10.15 Record data every second untilthe temperature returns to the startingtemperature.
10.16 Repeat 10.11-10.15 for each ofthe other four selected volumes of water.
11.Calculation and Evaluation
11.1 View the data on the recorder orplot the temperature versus time datausing a spreadsheet program for each ofthe three specimens.
11.2 Determine the start and end timeson the graph. The start time is when thewater is added to the specimen (Time 0 inFig. 2).The end time is the time at theintersection of the section with thesteepest slope and the flat section of the perature of the textile.This temperature isthe dry，equilibrated temperature of thetextile.
10.6 Dispense 0.100 ± 0.003 mL ofwater onto the top of the specimen.Observe if any water passed through thespecimen onto the paper towel.
10.7 If the paper towel is wet, allow thespecimen to dry. Replace the wet papertowel in the tray with a new paper towel.Reduce the volume in the pipette by 10%,and repeat 10.6.If water did not leak, letthe sample dry, then increase the volumeby 0.100 mL and test again. Repeat untilthe absorbent capacity can be estimated(as defined in 10.8).
NOTE: The delivery rate of the wateris important. To keep a constant deliveryrate a gravimetric feed pipette is used todeliver the water. Deliver the water bytouching the pipette to the textile.
10.8 The maximum volume of waterthat is absorbed by the textile withoutpassing through and wetting the papertowel is equivalent to the absorbentcapacity (v.) for this method.
10.9 Position the IRthermocoupleprobe in the middle of the specimen 1 cmabove the surface.
10.10 Remove the water detection tray.Close port to the shelf.
10.11 Let the specimen dry by waitingfor the temperature to return to the valuedetermined in 10.5.
10.12 Place the anemometer probeabove and near the center of thespecimen. Record air speed through thespecimen.
10.13 Select the maximum amount ofwater to be at least 10%less than Vm.Select four additional volumes of water atapproximately 10%,25%,50%, and 75%of the maximum amount. For example, atextile with a Vm 0.470 mL the volumeswould be 0.050,0.100,0.200,0.300, and0.400+ 0.001 mL.
10.14 Start the testing process byrecording temperature data and deliver-ing the first of a series of increasingvolumes of water on the specimen in thearea of the IR thermocouple probe view.10.15 Record data every second untilthe temperature returns to the startingtemperature.
10.16 Repeat 10.11-10.15 for cach ofthe other four selected volumes of water.
11.Calculation and Evaluation
11.1 View the data on the recorder orplot the temperature versus time datausing a spreadsheet program for each ofthe three specimens.
11.2 Determine the start and end timeson the graph. The start time is when thewater is added to the specimen (Time 0 in Fig. 2).AATCC 200 pdf download.Drying Rate of Textiles at their Absorbent Capacity