Modacrylic fiber features |
| Inherently FR
• Self-extinguishing when flame is removed |
| Char former
• With certain additives, fibers char, forming a flame barrier, especially in the presence of cellulosic fibers. |
| Chemically resistant
• Resistant to acids and bases |
| Thermal plastic
• Thermo-forming, moldable |
| No melting phase, so no dripping
• The dripping of molten polymer fibers can cause injury and spread the fire. Prevents polyester fibers from melting, also. |
| Dyeable
• Using basic dyes |
| Natural hand
• A softness similar to animal fur |
| Thermal insulator
• Feels light weight, yet it keeps you warm |
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Modacrylic fiber is a wet-spun halogen-substituted hydrocarbon made, primarily, from acrylonitrile (CH2=CHCN) / vinyl chloride (CH2=CHCl) or vinylidene chloride (CH2=CCl2) copolymer. Modacrylic fibers, by FTC (Federal Trade Commission) definition, must have a polymerized acrylonitrile (see chemical structures below) content that is greater than 35% and less than 85% by weight. In contrast, acrylic fibers must have at least 85% polymerized acrylonitrile by weight. See FTC Rules and Regulations (in new window) Under the Textile Fiber Products Identification Act, 16 CFR Part 303. Modacrylic retains many of the favorable characteristics of acrylic fiber. |
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Chemical structures |
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| More about modacrylic precursors | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Modacrylic fiber overview (in new window) by the American Fiber Manufacturers Association (AFMA) and the Fiber Bureau | ||||||||||||||||||||||||||||||||||||||||||||||||||||||