ISO 14887-2000 样品制备.粉末在液体中的分散方法

标准号：ISO 14887-2000
中文标准名称：样品制备.粉末在液体中的分散方法
英文标准名称：Sample preparation - Dispersing procedures for powders in liquids
标准类型：A28
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：A28
国际标准分类号：19.120
适用范围：This International Standard was developed to help particle size analysts make good dispersions from powder/liquid combinations with which they are not experienced. It provides procedures for— wetting a powder into a liquid;— deagglomerating the wetted clumps;— determining if solution composition can be adjusted to prevent reagglomeration;— selecting dispersing agents to prevent reagglomeration;— evaluating the stability of the dispersion against reagglomeration.This International Standard is applicable to particles ranging in size from approximately 0,05 to 100 urn. It provides a series of questions on the nature of the powder and liquid involved. The answers are used with charts that guide the user to generic dispersing agents that are likely to be suitable for dispersing the powder in the liquid.This International Standard applies only to the preparation of simple, dilute dispersions (less than 1 % by volume solids) for particle size analysis. It does not deal with the formulation of complex and commercial mixtures highly loaded with solids, such as paints, inks, pharmaceuticals, herbicides and composite plastics.