Abstract
The sorption of argon, carbon dioxide, and nitrogen on two heat shield composites SLA-561 and SLA-561V and the SLA components was measured over the pressure range of 10−3 to 760 torr and in the temperature range of 30° to 50°C. The sorption of the gases by both the composites and the components varied directly with pressure. The sorption of CO2 by the phenolic spheres and the silicone elastomer and of Ar by the silicone elastomer varied inversely with temperature. The mechanism involved in the gas sorption was primarily absorption.
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