Paints and varnishes. Coating materials and coating systems for exterior wood - Determination of pull-off strength after water exposure
Paints and varnishes. Coating materials and coating systems for exterior wood - Determination of pull-off strength after water exposure
What is PD CEN/TS 927-9 - Coating system about?
PD CEN/TS 927 discusses paints and varnishes. PD CEN/TS 927-9 is the ninth part of the PD CEN/TS 927 multi-series and discusses the determination of pull-off strength after water exposure for coating materials and coating systems for exterior wood. PD CEN/TS 927-9 specifies a method for assessing the resistance of a coating system on wet wood to separation from the substrate by measuring the force necessary to detach or rupture the coating system by a normal tensile strain applied through an attached stud (dolly). Additional information is gained by noting the type and locus of failure. A procedure for wetting the wood substrate is described. The test method is only suitable for wood and wood-based substrates. Note: For dry adhesion, the test method is allowed to be carried out without wetting in which case it will differ very little from EN ISO 4624 .
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