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Transportation Industry Marine Composites 15% weight reduction; 23% more capacity by weight and 13% more by volume; heat transfer estimated to be two-thirds of steel boxcars; and an estimated 50% reduction in maintenance costs. [1-63] Manufacturing Technologies Many competitive, stampable reinforced thermoplastic sheet products have been used during the past few years in the auto industry both in the U.S. and abroad. In 1988, Exxon Automotive Industry Sector, Farmington Hills, MI, introduced its Taffen STC (structural thermoplastic composite) stampable and compression-moldable sheet. This long-glass reinforced polypropylene sheet has already been used by European auto makers Peugeot, Audi, Vauxhall (GM) and Renault for instrument panel components, load floors, battery trays and other structural parts. A spokesman for Exxon claims that the material is under evaluation for 40 different programs at Ford, General Motors and Chrysler. A North American automotive engineering company has been designing and testing blow molded fuel tanks for cars. Hedwin Corporation, West Bloomfield, MI recently announced the application of an all-HDPE blow molded fuel tank forward of the drive shaft. The tank was produced for the 1989 Ford Thunderbird and Mercury Cougar, and Hedwin claims it is the first in a U.S.-built car to be mounted forward of the drive shaft. Because of the tank’s location, the design had to allow the shaft to pass through the middle of the tank, making it necessary to go to an exceedingly complex shape. At the Spring 1989 Society of Automotive Engineers International Congress & Exposition, significant developments in quality-enhancing polymer systems and materials technology were demonstrated. General achievements include: • Breakthroughs in high-productivity reaction injection molding (RIM) formulations and the equipment to handle them. • Success for thermoplastic elastomer (TPE) fascia; with an ultra-soft thermoplastic styrenic-based product soon to emerge. • Upgraded engineering and sound-damping foams for interior automotive and other specialty applications. • More high-heat polyethylene terephthalate PET materials. • A polyphenylene sulfide sulfone grade for underhood use. • Long-steel-fiber reinforced resins designed for EMI shielding. • Impact-modified polycarbonates, high-heat ABS grades, glass-reinforced acrylic-styrene-acrylonitrile/polybutylene terephthalate (ASA/PBT) blends, and impact acrylics. Also at the Spring 1989 Exposition, Mobay Chemical Co. introduced a RIM polyurea formulation that is claimed to offer dramatic productivity gains, excellent thermal stability, a surface finish as smooth as steel, and good abrasion, corrosion and wear resistance. Mobay is building a facility at New Martinsville, WV to produce a patented amine-terminated polyether (ATPE) claimed to improve the quality of auto body panels and other components made with 47PDF Image | Marine Componsites
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