EN ISO 8780-2:1995 PDF

Pigments and extenders - Methods of dispersion for assessment of dispersion characteristics - Part 2: Dispersion using an oscillatory shaking machine (ISO 8780-2:1990)

Название (английский):

EN ISO 8780-2:1995

Pigments and extenders - Methods of dispersion for assessment of dispersion characteristics - Part 2: Dispersion using an oscillatory shaking machine (ISO 8780-2:1990)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 8
Дата публикации:: 21 марта 1995 г.
Издание:: CEN EN 8780 edition 1 version 1
ICS:: 87.060.10

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Описание (английский):

The method is suitable for the preparation of dispersions of several samples in the quality control of pigments. An agreed binder system of low vicosity is used. This method is restricted to low-viscosity mill bases allowing free movement of the grinding spheres. It is not suitable for optimizing mill base formulations for other dispersing techniques.

Технические детали

Технический комитет: CEN/TC 298 - Pigments and extenders
SKU: EN ISO 8780-2:1995

Abstract

Overview

EN ISO 8780-2:1995 titled "Pigments and extenders - Methods of dispersion for assessment of dispersion characteristics - Part 2: Dispersion using an oscillatory shaking machine" is an internationally recognized standard developed by CEN. It specifies a method for dispersing pigments and extenders utilizing an oscillatory shaking machine, primarily intended for quality control testing. This method is adapted to low-viscosity mill bases that enable free movement of grinding spheres and is used with an agreed low-viscosity binder system.

The standard forms part of a series under ISO 8780, which addresses various dispersion methods to assess pigment dispersion characteristics effectively. EN ISO 8780-2 offers a controlled, reliable technique essential in pigment and extender testing for the paints and coatings industry.

Key Topics

Scope and Applicability The method is suitable for preparing dispersions of samples in pigment quality control. It applies only to low-viscosity mill bases, not suitable for optimizing mill base formulations for alternative dispersing techniques.
Equipment and Materials
- Oscillatory shaking machine with a specified stroke rate of 680-690 reciprocations per minute and shaking amplitude of 16 mm.
- Holder designed for multiple mill base containers, maintaining consistent positioning for repeatability.
- Uniform containers (e.g., 250 ml glass or polyethylene bottles) to ensure consistent volume and conditions.
- Grinding spheres with carefully controlled diameter (~3 mm ± 0.5 mm) and density (~2.6 g/cm³ ± 0.2 g/cm³) to guarantee reproducible dispersion.
Mill Base and Binder System Uses an agreed low-viscosity binder system. The pigment concentration is adjusted according to binder demand:
- Low binder demand: pigment > 40%
- Medium binder demand: pigment 10%-40%
- High binder demand: pigment

Overview

Key Topics

Scope and Applicability The method is suitable for preparing dispersions of samples in pigment quality control. It applies only to low-viscosity mill bases, not suitable for optimizing mill base formulations for alternative dispersing techniques.
Equipment and Materials
- Oscillatory shaking machine with a specified stroke rate of 680-690 reciprocations per minute and shaking amplitude of 16 mm.
- Holder designed for multiple mill base containers, maintaining consistent positioning for repeatability.
- Uniform containers (e.g., 250 ml glass or polyethylene bottles) to ensure consistent volume and conditions.
- Grinding spheres with carefully controlled diameter (~3 mm ± 0.5 mm) and density (~2.6 g/cm³ ± 0.2 g/cm³) to guarantee reproducible dispersion.
Mill Base and Binder System Uses an agreed low-viscosity binder system. The pigment concentration is adjusted according to binder demand:
- Low binder demand: pigment > 40%
- Medium binder demand: pigment 10%-40%
- High binder demand: pigment

EN ISO 8780-2:1995 PDF

Технические детали

Abstract

Overview

Key Topics

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Abstract

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Key Topics

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