Tougher PPA Grades Debut.Two new grades of Amodel polyphthalamide (PPA PPA - Pacific Planetarium Association PPA - Parité de Pouvoir d'Achat (French: purchasing power parity) PPA - Parti du Peuple Algerien PPA - Partial Payment Arrangement PPA - Partners in Personal Assistance PPA - Partnership for Prescription Assistance PPA - Pastor's Personal Assistant PPA - Path Profile Analysis PPA - Patiño & Partners Abogados (Spain) PPA - Peasants Per Acre (gaming) PPA - Pennsylvania Petroleum Association) from BP Amoco Polymers, Inc., Alpharetta, Ga., offer improved toughness and ductility ductility, ability of a metal to plastically deform without breaking or fracturing, with the cohesion between the molecules remaining sufficient to hold them together (see adhesion and cohesion). Ductility is important in wire drawing and sheet stamping. The metal must neither break nor be scraped off during these processes. Platinum, steel, copper, and tungsten have high ductility.. They are aimed at electrical connectors and fuel-delivery components. * Amodel AT-1002 HS is an unfilled, toughened grade said to offer high impact at low temperatures and retain its properties after exposure to humid thermal aging. Notched Izod impact values are 1.5 ftlb/in, at room temperature and 1.2 ftlb/in at -40 F, which compare with 0.8 and 0.2-0.3 ft-lb/in., respectively for PBT, according to EP Amoco. * Amodel AT-6115 HS is a toughened, 15%-glass grade with improved ductility and greater elongation (3.54%) than other reinforced PPA grades with similar glass loading. |
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