Acrylic fibers whiteness

Optical brightener for polyacrylonitrile fibers. Produces a brilliant blue white. Because of the cationic nature of HOSTALUX NRF, an optimum brightening effect can be obtained on most acrylic fibers without the necessity of a sodium chlorite bleach. 

Acrylic fibers discolor and decompose rather than melt when heated. Acrylic fibers, however, have very good color and heat stability at temperatures less than 230°C. In a study by American Cyanamid (using Federal Test Specification TT-P-141a Method 425.2), the yellowness of acrylic fabric was measured as a function of temperature [365]. Compared with a value of 0.00 for a pure-white body, the original fiber had a yellowness index of 0.04-0.10. After 30 min of exposure at 115°C, the yellowness increased only slightly from 0.11 to 0.17. After 6h at 130°C, however, the yellowness increased from 0.38 to 0.41. 

Nun s Veiling A soft, lightweight, plain-weave fabric that usually comes in black and white, nun s veiling is a rather flimsy, open fabric but always of high quality. It may be made from fine woolen yarn or yams spun from manufactured fibers such as nylon, acrylic, or polyester. 

Plastic Sheet, Acrylic, Colored and White, Heat Resistant Shipboard Application Plastic Sheet, Acrylic, Modihed, Laminated Heat-Resistant, Glass Fiber Base Polyester Resin,... 

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