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44 Cards in this Set
- Front
- Back
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specific gravity is 1.14-1.19 (lightweight) for _____
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acrylic and polypropylene
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tenacity is 3.0-9.5 when wet and 2.6-8.0 dry for ____
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acrylic and polypropylene
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moisture regain is 4.0-4.5 for___
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acrylic and polypropylene
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resilancy is good for___
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acrylic, polypropylene, modacrylic, polyethylene
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specific gravity is 1.3 for ___
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modacrylic and polyethylene
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specific gravity is 1.21 for __
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spandex
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tenacity is 2.3 when wet for___
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modacrylic
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tenacity is 2.3 when dry for___
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modacrylic and polyethylene
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tenacity is 0.7 wet and dry for____
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spandex
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moisture regain is 1.0 for___
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modacrylic and polyethylene
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moisture regain is 1.3 for ___
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spandex
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burning characterics for ___ are in flame, burns with melting, continues after flame is removed.
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acrylic and polypropylene
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burning characteristics for ___are in flame, burns very slowly with melting; self-extinguishing after flame is removed
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modacrylic and polyethylene
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burning characteristics for __ are in flame, burns with melting, continues after flame is removed, sticks at 370
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spandex
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melting point softens at 450-497, intermediate melting point
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acrylic
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melting point is aproxiamtely 400 degrees for___
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modacrylic and polyethylene
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melting point softens at 405-497
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polypropylene
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conductivity of heat and electricity is low for ___
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acrylic, polypropylene, modacrylic, polyethylene
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conductivity of heat and electricity is difficult to determine because the fiber is always used in combination with other fibers
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spandex
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resistance to damage from fungi and insects is excellent for___
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acrylic, polypropylene, modacrylic, polyethylene, spandex
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prolonged exposure to sunlight is excellent for___
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acrylic, polypropylene, modacrylic, polyethylene
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good resistance to acids except nitric acid for__
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acrylic, polypropylene,
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good resistance to acids for__
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modacrylic, polyethylene
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resists degredation to sunlight but may discolor
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spandex
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good but acid fumes may cause yellowing
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spandex
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bases are good to week
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acrylic, polypropylene,
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bases are moderate
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modacrylic, polyethylene
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bases are fair
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spandex
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uses are socks, sweaters, fleece, blankets, drapery, apulstry, awnings, outdoor furnature
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acrylic
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uses are pile and fleece
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modacrylic
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uses are for carpet, carpet backing
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polypropolyene
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uses are for traditional carpet
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polyethylene
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always combined with other fibers
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spandex
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Manufactured fibers in which the fiber-forming substance is any long-chain synthetic polymer composed of at least 85% by weight of ACRYLONITRILE units
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Acrylic
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extruding 2 different acrylic materials together as one fiber
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Bicomponent acrylics
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a manufactured fiber in which the fiber forming substance is ANY synthetic polymer composed of less than 85% but at least 35% by weight of acrylonitril units
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Modacrylics
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a manufactured fiber in which the fiber forming substance is any long-chain synthetic polymer composed of at least 85% weight of ETHLENE, PROPYLENE, or other OLEFIN units
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Olefin
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a natural or synthetic polymer which at room temperature can be stretched repeatedly to a least twice its original length and which safe removal of the tensile and will immediately and forcibly return to approximately its original length
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Elastomeric Fibers
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process where fibers are formed by splitting thin film of cross linked rubber polymers into fine strands
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vulcanization
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manufactured fiver in which the fiber forming substance I a long chain synthetic polymer comprised of at least 85% of a segmented polyurethane
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Spandex
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uncovered filaments, woven or knitted into fabrics
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Bare core spandex
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one layer of another filament fiver wrapped around spandex core
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Single covered yarns
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1st layer is twisted around core in one direction, 2nd layer is twisted around core in opposite direction, 2 diff. types of fiber in one yarn, very fine denier, ultra sheer- used for support hose
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Double covered yarns
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spandex filaments held under tension and a staple fiber is spun around it
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Core spun yarns
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