Test Background
The moisture resistance test of paints and varnishes can evaluate the moisture resistance of coating films, coating systems and similar products in a continuously condensing high-humidity environment in accordance with coating requirements or product specifications. Suitable coating substrates include porous substrates (such as wood, plaster and plasterboard) and non-porous substrates (such as metal).
Zhongke Testing Reliability Experiment Center has the capability of reliability testing of various paints and varnishes, and provides professional moisture resistance test services for paints and varnishes.
Scope of tests
Color paint is divided into primer and topcoat: primer is divided into primer, putty, mid-coat, sealer, anti-rust paint, etc.; topcoat is divided into enamel paint, special topcoat, etc.
The paint and film of varnish are transparent and are divided into ester varnish, shellac varnish, phenolic varnish, alkyd varnish, acrylic varnish, polyester varnish, high-performance varnish, fluorocarbon varnish, etc.
Test method
painted test panels are subjected to continuous condensation exposure tests, and the test results are evaluated based on the basis agreed in advance by the parties concerned.
These bases are often subjective. Can reveal coating damage including blistering, staining, softening, wrinkling and embrittlement as well as substrate damage.
Test standard:
GB/T 13893-2008 Paints and varnishes - Determination of moisture resistance - Continuous condensation method
ISO 6270-1-2017 Paints and varnishes - Determination of moisture resistance - Part 1: Condensation (single side exposure)
EN ISO 6270-1-2018 Paints and varnishes Determination of resistance to moisture Part 1: Condensation (single-sided exposure)
BS EN ISO 6270-1-2018 Paints and varnishes - Determination of moisture resistance - Part 1: Condensation (single side exposure)
DIN EN ISO 6270-1-2018 Paints and varnishes Determination of moisture resistance Part 1: Condensation (single-sided exposure)
ISO 6270-2-2015 Paints and varnishes Determination of resistance to moisture Part 2: Condensation (in storage cabinets containing hot water)
EN ISO 6270-2-2018 Paints and varnishes Determination of resistance to moisture Part 2: Condensation (in storage cabinets containing hot water)
BS EN ISO 6270-2-2018 Paints and varnishes Determination of resistance to moisture Part 2: Condensation (in storage cabinets containing hot water)
