AATCC Test Method 186-2009

Weather Resistance: UV Light and Moisture Exposure 

Developed in 1999 by AATCC Committee RA64


1. Purpose and Scope

  1.1 This test method provides a procedure for the exposure of textile materials of all kinds, including coated fabrics and products made thereof, in a laboratory artificial weathering exposure apparatus employing fluorescent UV lamps as a light source and using condensing humidity and/or water spray for wetting.

2. Principle


2.1 Specimens are exposed to a fluorescent UV light source and to periodic wetting under controlled conditions. Resistance to degradation is rated in terms of a comparison standard and the exposure criteria, percent loss in strength, or percent residual strength (breaking or bursting as appropriate) and/or color change of the material when evaluated under standard textile conditions



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