GB/T 21868.1-2008Pigments and extenders -- Methods of dispersion for assessment of dispersion characteristics -- Part 1: Introduction (English PDF)

Foreword

This section identical with the international standard ISO 8780-1. Part 1 dispersion method of pigments and extenders assessment of dispersion characteristics with the 1990 " Score. General "(in English).

This section is one of the GB/T 21868 "dispersion method of pigments and extenders assessment of dispersion characteristics with" national standards, listed below A series of national standards with international standards and the structure corresponding to.

--- Part 1. General (ISO 8780-1:1990);

--- Part 2. oscillation mill dispersion (ISO 8780-2:1990);

--- Part 3. dispersion using a high speed mixer (ISO 8780-3:1990);

--- Part 4. sand dispersion (ISO 8780-4:1990);

--- Part 5. automatic flat mill dispersion (ISO 8780-5:1990);

--- Part 6. ( 1990 ISO 8780-6) dispersed with a three-roll mill.

This section GB/T 21868 Part 1.

Are listed below in this section is closely related to the GB/T 21867 "Evaluation Method pigments and dispersion" series of national standard Prospective structure and corresponding international standards.

--- Part 1. Changes the tinting strength of colored pigments to be assessed (ISO 8781-1:1990);

--- Part 2. change the fineness of grind to be assessed (ISO 8781-2:1990);

--- Part 3. Evaluation of changes in the gloss (ISO 8781-3:1990).

This part is proposed by the China Petroleum and Chemical Industry Association.

This part of the National Standardization Technical Committee and is under the jurisdiction of paints and pigments.

This section is drafted. in the construction of Changzhou coating Chemical Research Institute, Kunshan City Shiming Technology Development Co., Ltd.

1 Scope

This section outlines the assessment of dispersion characteristics with GB/T 21868 series of standards specified in the dispersion of pigments and extenders to specific paint Various methods based system.

Evaluation Method of dispersion of the provisions in GB/T 21867 in.

A variety of similar pigment dispersion methods (such as pigments and test the agreed reference pigment) dispersion for comparison. As long as the test points Powder conditions are right, the test results can be obtained as the production conditions of the reference pigment dispersion.

2 Normative references

The following documents contain provisions which, through reference GB/T 21868 in this section constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section.

GB/T 21868.2-2008 dispersion method of pigments and extenders used in assessment of dispersion characteristics - Part 2. oscillation mill dispersion (ISO 8780-2:1990, IDT) GB/T 21868.3-2008 Pigments and extenders assessment of dispersion characteristics by dispersing methods - Part 3. High-speed mixer points Powder (ISO 8780-3:1990, IDT) GB/T 21868.4-2008 dispersion method of pigments and extenders used in assessment of dispersion characteristics - Part 4. Sand Milling (ISO 8780-4:1990, IDT) GB/T 21868.5-2008 Methods for dispersing pigments and extenders assessment of dispersion characteristics with 5. automatic flat grinding points Powder (ISO 8780-5:1990, IDT) GB/T 21868.6-2008 Pigments and extenders assessment of dispersion characteristics of the dispersion methods - Part 6. a three-roll mill dispersion (ISO 8780-6:1990, IDT) GB/T 21867.1-2008 Evaluation Method of pigments and dispersion - Part 1. change the tinting strength of colored pigments of assessed (ISO 8781-1:1990, IDT) GB/T 21867.2-2008 Evaluation Method of pigments and dispersion - Part 2. Changes by the fineness of grind was Assessment (ISO 8781-2:1990, IDT) GB/T 21867.3-2008 Evaluation Method of pigments and dispersion - Part 3. Evaluation of changes in the gloss (ISO 8781-3:1990, IDT)

3 Definitions

The following terms and definitions apply to this section.

Based paint, solvents, pigments and additives and mixtures thereof.

Grinding under specified conditions, the pigment particles are ground and separated in stable binder system level.

GB/T 21868.1-2008/ISO 8780-1:1990