Theory:
The test method by which this test is
carried out is ISO 105 E03. Chlorinated Pool water fastness is getting more importance
in Terry
Towel industry for swimwear and also for yarn dyeing. This method is
designed to evaluate the resistance to Chlorinated Pool Water of any colored
textile substrate. Here, the test specimen is treated in diluted Chlorine
solution under specified conditions of available chlorine content, time and pH
condition.
Colorfastness
to Chlorinated Water
|
Apparatus:
- Gyrowash
- Grey scale
- Color matching chamber
- Glass beaker
- Stainless steel container
- pH meter
Reagent:
1. Distilled water or de-ionized water.
2. NaOCl solution (100 gm/l, 50 gm/l, 20 gm/l of active chlorine at pH 7.5±0.05)
Sample Preparation:
A textile material (Dyed Goods) sample should be cut at 10 cm into 4 cm.
Procedure:
1. Distilled water or de-ionized water.
2. NaOCl solution (100 gm/l, 50 gm/l, 20 gm/l of active chlorine at pH 7.5±0.05)
Sample Preparation:
A textile material (Dyed Goods) sample should be cut at 10 cm into 4 cm.
Procedure:
1. Put the specimen into the steel
containers and added in the sodium hydrochloride solution with liquor ratio
1:100 based on the appropriate concentration of active chlorine used.
↓
2. Close the container and put it inti
the mechanical device (Gyrowash) and agitate at 27±20C for 1 hour in darkness.
↓
3. Remove the specimen from the
container and squeeze it.
↓
4. Dry the specimen by hanging it in
air at room temperature in quiet light.
Evaluation:
Compare the contrast between the treated and untreated sample with Grey scales for changing color of dyed sample in a color matching cabinet. Numerical rating for color changing is the shade.
