前言
国际标准化组织 (国际标准化组织) 是国家标准机构的全球联合会 (ISO成员机构). 国际标准的制定通常通过ISO技术委员会进行. 每个对已成立技术委员会的主题感兴趣的成员团体都有权在委员会中派代表参加. 国际的, 与 ISO 联络的政府和非政府组织也参与了这项工作. ISO 与国际电工委员会密切合作 (国际电工委员会) 关于电气标准化的所有问题.

技术委员会通过的国际标准草案将分发给成员机构进行投票. 作为国际标准的出版需要至少获得投票批准 75% of the member body.

国际标准ISO 8780-6 was developed by the ISO/TC 35 Technical Committee on Paints and Varnishes.

国际标准化组织 8780 consists of the following sections under the general heading Pigments and Increments – Dispersion Methods for assessing dispersion properties:

— 部分 1: 介绍

— 部分 2: Dispersion using oscillating motors

— 部分 3: Dispersion using high speed impeller mill

— 部分 4: 使用珠磨机分散

— 部分 5: Using an automatic grinder for dispersion

— 部分 6: Dispersion using a three-roll grinder

Appendix A forms an integral part of this part of ISO 8780.

国际标准化组织 8780-6-1990 “评价颜料和填料分散性能的分散方法 — 部分 6: 使用三辊研磨机分散”

1 适用范围
ISO的这一部分 8780 specifies a method for dispersing pigments and increments using a three-roll grinder. The results allow conclusions to be drawn about the behavior of the test product when dispersed using the corresponding production machine. ISO的这一部分 8780 is used in conjunction with the evaluation methods described in ISO 8781, using an agreed upon high viscosity adhesive system that does not contain volatile substances. It should be read in conjunction with ISO 8780-1.

This method is limited to high viscosity abrasives. In order to improve the precision of the method, it is suggested that the dispersion procedure of the test pigment and the agreed reference pigment should be carried out at the same temperature.

The results obtained are not suitable for comparison with the dispersion results obtained using other dispersion methods.

笔记 1 The advantages of the three-high mill described in this section of ISO 8780 are ease of handling the equipment, the ability to prepare sufficient quantities of abrasive for extensive evaluation procedures, ease of cleaning and associated probable results with the results of the production machinery. Unlike dispersion devices used for low-viscosity abrasive formulations, three-roll grinders such as those described in this part of ISO 8780 allow processing of a variety of high-viscosity abrasive formulations. Because of this greater flexibility, it is not necessary to precisely specify the appropriate color paste formula.

2 规范性参考文件
以下标准包含的条款, 引用, 构成ISO本部分的规定 8780. 发布时, 显示的版本有效. All standards are subject to revision and parties to an agreement based on this part of ISO 8780 are encouraged to investigate the possibility of applying the latest versions of the following standards. IEC 和 ISO 成员维护当前有效的国际标准登记册.

国际标准化组织 787-24:1985, General methods of test for pigments and increments – 部分 24: Determination of the relative tinting force of coloured pigments and the relative scattering force of white pigments – 光度法.

国际标准化组织 842:1984, Raw Materials for paints and varnishes – 采样.

国际标准化组织 1524:1983 油漆和清漆 – Determination of grinding fineness.

国际标准化组织 8780-1:1990, 颜料和增量 — Dispersion methods for the evaluation of dispersion properties — 部分 1: 介绍.

国际标准化组织 8781-1:1990, 颜料和增量 – 评估分散特性的方法 – 部分 1: Assessment against changes in the tint strength of coloured pigments.

国际标准化组织 8781-2:1990, 颜料和增量 – Method for assessing dispersion properties – 部分 2: 评估研磨细度的变化.

国际标准化组织 8781-3:1990, 颜料和增量 – 评估分散特性的方法 – 部分 3: 根据光泽变化进行评估.

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