本文件规定了在分压差下测定硫化橡胶或热塑性橡胶气体渗透性的三种方法。 规定的三种方法如下: —？压力传感器方法（使用真空）:用于确定气体传输速率、气体渗透系数、气体扩散系数和气体溶解度系数； —？一种简化的传感器方法（使用外加压力）:仅用于确定气体渗透系数； —？气相色谱法:用于测定气体传输速率和气体渗透系数。 这些方法适用于硬度不低于35°C的硫化橡胶和热塑性橡胶IRHD（国际橡胶硬度）和单一气体和混合气体。

This document specifies three methods for the determination of the permeability to gases of vulcanized or thermoplastic rubber under a differential partial pressure. The three methods specified are as follows: —？a pressure sensor method (using vacuum): for determining the gas transmission rate, gas permeability coefficient, gas diffusion coefficient and gas solubility coefficient; —？a simplified sensor method (using applied pressure): for determining the gas permeability coefficient only; —？a gas-chromatographic method: for determining the gas transmission rate and gas permeability coefficient. These methods apply to vulcanized and thermoplastic rubbers of hardness not less than 35？IRHD (international rubber hardness degrees) and to both single gases and mixtures of gases.