Methods to improve the perspiration and light color fastness of flame retardant fabrics
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Flame retardant fabric color fastness dye textile
The high perspiration light fastness of vat dyes is related to their unique structural characteristics. There are no water-soluble groups and few polar groups in the vat dye molecules. The components of artificial sweat have little effect on their structures. The large closed conjugated system of vat dyes gives them strong resistance to the long-term continuous action of light energy. ability.
As we all know, the cost of vat dyes is higher than that of reactive dyes, and the dying process control requirements are higher. Therefore, only after the productSweat light fastnessWhen the requirements are high, it can be used to replace some reactive dyes. (1) The sweat light fastness of reactive dyes has the characteristics of reasonable sweat composition, convenient test operation, strict standards and practical value. (2) Among the three primary colors of commonly used reactive dyes, most xanth primary dyes have excellent perspiration light fastness; red primary color dyes have average perspiration light fastness; cyan primary color dyes have poor perspiration light fastness and need to be screened for use. (3) The color of flame-retardant fabrics treated with ferrous sulfate turns yellow; those treated with copper sulfate turn red. Both of them have no significant improvement in the light fastness to sweat. (4) Some perspiration light fastness enhancers and anti-UV finishing agents have a certain effect on improving the perspiration light fastness of reactive dyes. (5) The comprehensive light fastness of medium and light-colored direct light fast dyes to sunlight and perspiration is not high, and the wet fastness is not as good as that of reactive dyes. They cannot be used as substitutes for reactive dyes with low perspiration and light fastness. (6) Some sulfur dyes have good light fastness to sweat and can be used as a reference. (7) Vat dyes have excellent perspiration and light fastness and can be used as substitute dyes for reactive dyes with low perspiration and light fastness. This is an important method to fundamentally improve the perspiration and light fastness of Flame retardant fabrics .
To sum up, the effective way to improve the color fastness of flame retardant fabric to perspiration and light composite is to choose a material with a higher fastness. Highly reactive dye varieties are either dyed with vat dyes or partially sulfur dyes. In actual production, reasonable choices should be made based on color fastness requirements, production costs, technology and other factors.
The Flame-retardant fabric produced by City Textile has excellent perspiration and light color fastness properties.
：City
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