introduction
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ISO 15110-2017 “Artificial ageing of paints and varnishes including acid deposition”

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This document was prepared by Technical Committee ISO/TC 35, Paints and Varnishes, Subcommittee SC 9, Common Test Methods for paints and varnishes.

The second edition cancels and replaces the first edition (ISO 15110:2013), which has been technically revised. The main changes from the previous edition are as follows:

– Scope is limited to paints and varnishes;

A black panel thermometer was added to the fluorescent UV lamp, as it provides the same results as the BST UV-F device;

Uncontrolled humidity exposure has been listed as a new UADF test because it has been shown that humidity control does not affect the precise type of damage caused by this test.

ISO 15110-2017 “Artificial ageing of paints and varnishes including acid deposition”

introduce
This document specifies a method for modeling the destructive effects of outdoor weathering associated with acidic atmospheric precipitation on painted products. The mechanism is different from that of harmful gases, which are basically the initial products of acid precipitation.

Acidic precipitation occurs occasionally due to changes in industrial air pollution, coupled with the spread of random wind and cloud distribution. Therefore, especially in the case of acidic precipitation, outdoor weathering effects vary greatly from year to year. As a result, it is almost impossible to get reliable outdoor exposure results from just one season. These fluctuations can be avoided by using laboratory tests in which all weathering parameters, including acid deposition, can be controlled.

This method is based on VDI guideline VDI 3958-12[9].

1 Range
This document specifies the so-called acid Dew and Fog test (ADF test) as an accelerated laboratory test method to simulate the damaging effects of acidic atmospheric precipitation associated with ultraviolet radiation, neutral condensing precipitation, and temperature and humidity changes by using artificial acidic precipitation. This test method is designed to evaluate the suitability of paint materials for use in acidic precipitation outdoor environments based on relative performance rankings. It is not intended to produce the same degree of damage or the same pattern of damage as outdoor weathering, but rather to give a ranking similar to outdoor weathering. The method produces more uniform damage, allows fewer specimens to be exposed (so testing is faster), and enables exposure specimens to be evaluated using a more objective method than visual assessment.

ISO 15110-2017 “Artificial ageing of paints and varnishes including acid deposition”

2 Normative references
The following files are referenced in text in a manner that constitutes part or all of the requirements of this document. For dated references, only the cited version applies. For undated references, a new version of the reference (including any revisions) applies.

ISO 16474-1, Paints and varnishes – Methods of exposure to laboratory light sources – Part 1: General guidance

ISO 16474-2:2013, Paints and varnishes. Methods of exposure to laboratory light sources. Part 2: Xenon arc lamp

ISO 16474-3:2013, Paints and varnishes. Methods of exposure to laboratory light sources. Part 3: Fluorescent UV lamps

3 Terms and definitions
No terms and definitions are listed in this document.

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