NEN EN ISO 1157-1999 标准详情
- 标准号:NEN EN ISO 1157-1999
- 中文标题:塑料 - 醋酸纤维素稀溶液 - 测定粘数和粘度比
- 英文标题:Plastics - Cellulose Acetate In Dilute Solution - Determination Of Viscosity Number And Viscosity Ratio
- 标准类别:荷兰国家标准NEN
- 发布日期:
Defines a procedure which determines viscosity number and ratio of cellulose acetate in dilute solution in a dichloromethane and methanol mixture. Covers cellulose acetate with an acetic yield of not less than 50%.
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