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Kevlar |
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KevlarTrademarked name of poly-para-phenylene terephthalamide, a nylonlike polymer first produced by Du Pont in 1971. Kevlar can be made into strong, tough, stiff, high-melting fibres, five times stronger per weight than steel; it is used in radial tires, heat- or flame-resistant fabrics, bulletproof clothing, and fibre-reinforced composite materials for aircraft panels, boat hulls, golf-club shafts, and lightweight bicycles. |
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Its toughness is said to be twice that of Kevlar aramid fiber. Semple notes that in joint patrols involving Americans and Iraqis, "the Americans, swaddled in Kevlar from head to hips, travel in Humvees and other armored vehicles. The palms of a welder wearing a Heatworx glove are protected by a Kevlar shell that can shield against temperatures from 300 to 600 degrees. |
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