ISO 22987:2020
Ships and marine technology — Laboratory test method for skin friction of antifouling paints by rotating drum
This document provides a laboratory test method to determine the skin-friction of antifouling paints coated on drums.
The results of the laboratory-tested friction of painted drums over a certain period of time can be used for screening of antifouling paints and characterizing changes in friction for different antifouling paints, amongst other applications and other purposes depending on the user's need.
This document is applicable to both biocidal-based and biocide-free antifouling paints.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Test instrumentation
4.1 General
4.2 Dynamic ageing system
4.3 Friction test system
4.4 Motors
4.5 Testing solution
4.6 Torque sensor
5 Drum specification
5.1 Materials
5.2 Dimension
6 Preparation of the test specimen
6.1 Paint sampling
6.2 Paint application
6.3 Drying and conditioning of test specimen
6.4 Dry film thickness
6.5 Sample quantity
7 Test procedure
7.1 Test principle
7.2 Test procedure
8 Calculation and expression of results
8.1 Calculation of torque
8.2 Determination of roughness
8.3 Calculation of friction reduction rate
9 Precision
10 Test report
Annex A (normative) Determination of paint surface roughness by stylus instrument
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Test instrumentation
4.1 General
4.2 Dynamic ageing system
4.3 Friction test system
4.4 Motors
4.5 Testing solution
4.6 Torque sensor
5 Drum specification
5.1 Materials
5.2 Dimension
6 Preparation of the test specimen
6.1 Paint sampling
6.2 Paint application
6.3 Drying and conditioning of test specimen
6.4 Dry film thickness
6.5 Sample quantity
7 Test procedure
7.1 Test principle
7.2 Test procedure
8 Calculation and expression of results
8.1 Calculation of torque
8.2 Determination of roughness
8.3 Calculation of friction reduction rate
9 Precision
10 Test report
Annex A (normative) Determination of paint surface roughness by stylus instrument