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首页> 美国政府科技报告 >FRICTION, WEAR, AND DECOMPOSITION MECHANISMS FOR VARIOUS POLYMER COMPOSITIONS IN VACUUM TO IO-9 MILLIMETER OF MERCURY
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FRICTION, WEAR, AND DECOMPOSITION MECHANISMS FOR VARIOUS POLYMER COMPOSITIONS IN VACUUM TO IO-9 MILLIMETER OF MERCURY

机译：真空中的各种聚合物组合物的摩擦，磨损和分解机理，以及10 -9毫米汞的摩擦系数

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Experiments were conducted with various polymer compositions in vacuum (l0-9 mm Hg) to determine the friction, the wear, the decomposition mechanisms, and the evaporation rates of one of these materials. The materials included the basic polymers polytetrafluoroethylene (Teflon, PTFE), polychlorotrifluoroethylene (PCFE), and polyimide. In addition, experiments were conducted on these polymers with various fillers incorporated into their structures.nFriction and wear experiments were conducted with hemispherical rider speci¬mens (usually a polymer) under a 1000-gram load sliding on flat disk surfaces (various materials). These experiments were conducted at sliding velocities from 30 to 1480 feet per minute. With the aid of a mass spectrometer, the decomposi¬tion of polymers was monitored in the friction and wear studies. Evaporation rate was determined in vacuum to 10-8 millimeter of mercury with polyimide at temperatures to 875℉.

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