ISO 19403-5:2017 PDF

Paints and varnishes — Wettability — Part 5: Determination of the polar and dispersive fractions of the surface tension of liquids from contact angles measurements on a solid with only a disperse contribution to its surface energy

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Title (English):

ISO 19403-5:2017

Document status:: Withdrawn
Format:: Electronic (PDF)
Number of pages:: 6
Publication date:: June 28, 2017
Edition:: ISO IS 19403 edition 1 version 1
ICS:: 01.040.87

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Description (English):

ISO 19403-5:2017 specifies a test method to determine the polar and dispersive fractions of the surface tension of liquids by optical methods. The method can be applied for the characterization of liquid coating materials. The applicability can be restricted for liquids with non-Newtonian rheology[1]. ISO 19403-5:2017 assumes that the information of surface tension of the liquid to be tested and the surface free energy of the dispersive reference solids is known. [1] This term is defined in DIN 1342-1.

Technical details

Technical committee: ISO/TC 35/SC 9 - General test methods for paints and varnishes
SKU: ISO 19403-5:2017

Abstract

Overview

ISO 19403-5:2017 - part of the ISO 19403 series on wettability - specifies an optical test method to determine the polar and dispersive fractions of the surface tension of liquids from contact-angle measurements on a solid that has only a dispersive contribution to its surface energy. The standard is intended primarily for the characterization of liquid coating materials and assumes the liquid’s surface tension and the reference solid’s surface free energy are known. Applicability can be restricted for liquids with non-Newtonian rheology.

Key topics and requirements

Principle (stepwise):
- Measure the liquid’s total surface tension (e.g., per ISO 19403-3, EN 14370 or ISO 1409).
- Determine the reference solid’s surface free energy (ISO 19403-2).
- Measure the contact angle of the test liquid on the dispersive reference solid (ISO 19403-2).
- Calculate the dispersive fraction using either Owens–Wendt–Rabel–Kaelble (OWRK) or Wu methods.
- Calculate the polar fraction as total surface tension minus dispersive fraction.
Reference solids: Use chemically and topologically homogeneous dispersive materials (examples: PTFE or paraffin). Preferred reference surface roughness R

Related standards

Standards mentioned in the description

Overview

Key topics and requirements

Principle (stepwise):
- Measure the liquid’s total surface tension (e.g., per ISO 19403-3, EN 14370 or ISO 1409).
- Determine the reference solid’s surface free energy (ISO 19403-2).
- Measure the contact angle of the test liquid on the dispersive reference solid (ISO 19403-2).
- Calculate the dispersive fraction using either Owens–Wendt–Rabel–Kaelble (OWRK) or Wu methods.
- Calculate the polar fraction as total surface tension minus dispersive fraction.
Reference solids: Use chemically and topologically homogeneous dispersive materials (examples: PTFE or paraffin). Preferred reference surface roughness R

ISO 19403-5:2017 PDF

Technical details

Abstract

Overview

Key topics and requirements

Related standards

Abstract

Overview

Key topics and requirements

Related standards

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