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BS 2782系列標(biāo)準(zhǔn)屬于英國標(biāo)準(zhǔn)英標(biāo)，是關(guān)于“塑料的試驗方法”的標(biāo)，在BS 2782關(guān)于老化測試部分主要是關(guān)于玻璃板下的日光暴曬照射、自然風(fēng)化或?qū)嶒炇夜庠凑丈涞念伾兓托再|(zhì)改變的測定。
BS 2782英文簡介
BS 2782-5-Method 552A1999 ISO 4582-1998
ISO 2782-1:2016 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:
- pressure sensor method (using vacuum): for determining the gas transmission rate, gas permeability coefficient, gas diffusion coefficient and gas solubility coefficient;
- simplified sensor method (using applied pressure): for determining the gas permeability coefficient only;
- 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.
