New Technique Bonds PPA to Rubber.Amodel polyphthalamide (PPA PPA 1. Palpation, Percussion & Ausculation 2. Pittsburgh pneumonia agent 3. Postpartum amenorrhea 4. Price per accession 5. Pure pulmonary atresia ) resins from BP Amoco in Alpharetta, Ga., are being adopted for moving parts in automotive and heating, ventilation, and air-conditioning (HVAC (Heating Ventilation Air Conditioning) In the home or small office with a handful of computers, HVAC is more for human comfort than the machines. In large datacenters, a humidity-free room with a steady, cool temperature is essential for the trouble-free ) applications as a result of a novel bonding method developed by Bryant Rubber Corp. in Harbor City, Calif. The approach permits selective, primerless adhesion of silicone elastomer elastomer (ĭlăs`təmər), substance having to some extent the elastic properties of natural rubber. The term is sometimes used technically to distinguish synthetic rubbers and rubberlike plastics from natural rubber. to Amodel PPA for use in high-temperature environments. Bryant's special silicone formulation adheres only to PPA, not metal, so moving parts won't bind at high temperatures, Previously, adhesion was the weak link in parts experiencing extended movement under high temperature. PPA imparts lighter weight, better dimensional stability dimensional stability, n See stability, dimensional. , and greater chemical resistance than the metals it replaces in silicone-bonded parts. |
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