标准摘要
[中文适用范围]: ISO 23900 的这一部分规定了一种方法,用于确定聚乙烯 (PE) 中测试颜料相对于标准的色彩特性,以及根据不同条件下分散着色材料的颜色强度差异来确定颜料的 DHPE 分散难易程度。 方法 A 适用于粉末形式的有机粉末颜料和炭黑颜料,其中许多粉末形式会受到压实(在压力下重新附聚)、粉末形式的无机颜料以及粉末或片状形式的颜料制剂。 方法 B 适用于测试颗粒状颜料和颜料制剂以及任何形式的无机颜料。 以这种方式确定的分散容易度仅对所使用的分散设备、分散条件和分散介质有效。 使用与规定不同的测试条件可能会得到不同的结果;这既适用于绝对大小,也适用于各种颜料的易分散性值之间的关系。 因此,下标 DHPE 用于表示按照 ISO 23900 本部分规定获得的值。 [外文原描述]: ISO 23900-3:2015 specifies a method of determining in polyethylene (PE) the colouristic properties of a test pigment relative to a standard, and the ease of dispersion DH PE of pigments from the differences in colour strength on dispersing colouring materials under various conditions. Method A is appropriate for use with organic powder pigments and carbon black pigments in powder form, many of which are subject to compaction (reagglomeration under pressure), for inorganic pigments in powder form and for pigment preparations in powder or flake form. Method B is appropriate for testing pigments and pigment preparations in granular form and for inorganic pigments in any form.
英文名称Pigments and extenders — Methods of dispersion and assessment of dispersibility in plastics — Part 3: Determination of colouristic properties and ease of dispersion of black and colour pigments in polyethylene by two-roll milling