Summary:
Boiling water shrinkage test
(1) Take four spandex samples, remove the surface layer, then take three paragraphs 10cm l...
Boiling water shrinkage test
(1) Take four spandex samples, remove the surface layer, then take three paragraphs 10cm long and mark the distance with a color pen.
(2) Put the sample into boiling water (100°C) for 10 minutes, then take it out and hang it to dry at room temperature, and measure the length after shrinkage after 5 minutes.
(3) Calculate the shrinkage rate of boiling water according to the difference before and after boiling water, and the standard rate is 10-15%.
Boiling water shrinkage (%) = (10cm-test length)/10×100%
Conclusion: The shrinkage rate in boiling water exceeds 10-15%, indicating that the stability of spandex is poor.
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