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  1)   Nylon It is a polyamide fiber, derived from a diamine and a dicarboxylic acid, because a variety of diamines and dicarboxylic acids can be produced, there are a very large number of polyamide materials available to produce nylon fibers. The two most common versions are nylon 66 (polyhexamethylene adiamide) and nylon 6 (Polycaprolactam, a cyclic nylon intermediate). Production of nylon: Nylon is made by forcing molten nylon through very small holes in a device called a spinneret. The streams of nylon harden into filament once they come in contact with air. They are then wound onto bobbins. These fibers are drawn (stretched) after they cool. Properties of the nylon: 1)It is strong and elastic. 2)It is easy to launder. 3)It dries quickly. 4)It retains its shape. 5)It is resilient and responsive to heat setting. 6)Abrasion resistant 7)Filament yarn provides smooth, soft, long lasting fabrics 8)Extremely chemically stable Uses: Nylon is popular for hosiery and is used to make track pants, shorts, swimwear, active wear, windbreakers, bedspread and draperies. It can also be made into parachutes, flak vests, combat uniforms, tires and life vests, or used as the netting of bridal veils, umbrellas and luggage. 1. Nylon is a high strength fibre. It is used for making fishing nets, ropes, parachutes and type cords. 2. It is used for making fabrics in textile industry. 3. Crinkled nylon fibres are used for making elastic hosiery. 4. Nylon is widely used as plastic for making machine parts. 2)   ABS ABS Plastic is a copolymer of Acrylonitrile, Butadiene, and Styrene, and generally possess medium strength and performance at medium cost.  Properties 1)Medium strength 2)Tough, hard and rigid 3)Good chemical resistance 4)Dimensional stability 5)Creep resistant 6)Electroplatable 7)Outstanding formability 8)Very high impact strength 9)High tensile strength and stiffness 10)Excellent high and low temperature performance 11)Resistant to many plasticizers 12)Excellent ductility Application ABS can be used to make light, rigid, molded products such as piping, musical instruments (most notably recorders and plastic clarinets), golf club heads (used for its good shock absorbance), automotive body parts, wheel covers, enclosures, protective head gear, vballs [reusable paintballs], and toys including LEGO bricks. Polypropylene (PP) Polypropylene (PP) is a is a thermoplastic linear hydrocarbon polymer, expressed as CnH2n. Properties The properties of Polypropylene include... Semi-rigid Translucent Good chemical resistance Tough Good fatigue resistance Integral hinge property Good heat resistance PP does not present stress-cracking problems and offers excellent electrical and chemical resistance at higher temperatures. While the properties of PP are similar to those of Polyethylene, there are specific differences.  In general homopolymers (i.e. with only one type of monomer) can be used for housing, housewares, packaging, cassette holders and fibers, monofilaments and film tapes; copolymers (i.e. different monomers are involved) are prefered for all applications exposed to cold and they are widely used for pipes, containers, boat hulls, seat shells and automotive parts e.g. battery cases and bumpers.
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