DIN EN 12877-4-2000 塑料中的着色剂.塑料中着色剂的处理过程中颜色热稳定性的测定.第4部分:双辊研磨法测定
Colouring materials in plastics - Determination of colour stability to heat during processing of colouring materials in plastics - Part 4: Determination by two-roll milling; German version EN 12877-4:1999
The document describes a method for determinating the colour stability of colouring materials under defined conditions in plastics by two-roll milling. The result of the determination is a relative value, not an absolute one. The method is mainly applicable for testing colouring materials in polyvinyl chloride.#,,#