Dyeing performance and sunlight resistance of polyphenylene sulfide yarns with vat dyes
In view of poor light resistance and low color fastness to sunlight in polyphenylene sulfide dyeing,dyeing experiments are conducted on polyphenylene sulfide yarn by selecting vat dyes and optimizing the corresponding dye reduction formulas and dyeing conditions.The results show that the polyphenylene sulfide yarn dyed with 3％vat dyes has a color fastness of 3～4 levels to sunlight,and a color fastness of 4 levels to dry and wet friction,sweat,and washing;Meanwhile,the polyphenylene sulfide yarn dyed with vat dyes can still maintain excellent thermal and mechanical properties.
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