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Chinese Standard: GB/T 20673-2006

Cellular plastics—Determination of the coefficient of linear thermal expansion of rigid materials at sub-ambient temperatures

MOD  ISO 4897:1985

全国塑料制品标准化技术委员会(CSBTS/TC 48)

本标准规定了测定硬质泡沫塑料低于环境温度的线膨胀系数的方法。
本标准适用于测定硬质泡沫塑料在选定低温与环境温度之间的"平均"线膨胀系数。
采用本标准测得的线膨胀系数值仅在受试时间内对受试的特定样品有效。
硬质泡沫塑料具有各向异性,不同方向的试验所得到的结果没有可比性。

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