原文由 jimmyli 发表:
5.8 Resistance of plastic sheets to discolouration under the effect of moisture
The plastic sheets shall be exposed to weathering according to ISO 105 B04 for 24 ,Afterwards ,the sample shall be stored at standard at standard atmosphere according to ISO 554 for 24 .A possible discolouration shall be evaluated on the basis of the grey scale for the grey scale for the assessment of colour changes (according to ISO 105 – A02)
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塑料床单对湿气抗褪色能力
塑料床单应当按照ISO 105 B04 暴露风化24{小时(天)?},然后按照ISO554将样品储存在标准的大气环境中24{小时(天)?},有可能会褪色,在灰色背景基础上对灰色比例进行评估,确定其颜色的变化。