introduction
ISO (International Organization for Standardization) is a global alliance of national standards bodies (ISO member bodies). The development of international standards is usually carried out through ISO technical committees. Each member institution interested in a subject on which a technical committee has been established has the right to be represented on that committee. International governmental and non-governmental organizations liaising with ISO are also involved in this work. ISO works closely with the International Electrotechnical Commission (IEC) on all matters of electrical standardization.

International standards are drafted in accordance with the rules given in Part 2 of the ISO/IEC Directive.

The main task of the technical committee is to develop international standards. The draft international standard adopted by the Technical Committee will be circulated to the member bodies for voting. Publication as an international standard requires approval by at least 75% of member institutions.

ISO 9117-3-2010 Drying tests for paints and varnishes – Part 3: Surface drying tests using small glass spheres

Please note that certain elements of this document may be subject to patent rights. ISO is not responsible for identifying any or all such patents.

ISO 9117-3 was developed by Technical Committee ISO/TC 35, Paints and Varnishes, Subcommittee SC 9, General Test Methods for paints and varnishes.

The first edition of ISO 9117-3 eliminated and replaced the technically revised ISO 1517:1973. The main changes are as follows:

A) The method has been integrated into the ISO 9117 series as Part 3 for the determination of dryness of paints and varnishes;

b) the “Principles” clause has been added;

c) The text of the supplementary information listed in the preceding statement has been integrated into the test report.

ISO 9117 consists of the following parts, under the general heading Paints and varnishes – Drying Tests:

ISO 9117-3-2010 Drying tests for paints and varnishes – Part 3: Surface drying tests using small glass spheres

– Part 1: Determination of drying state and drying time

– Part 2: Stress testing for stackability

– Part 3: Surface drying test using Balotini

The following sections are in preparation:

– Part 4: Testing using a mechanical recorder

– Part 5: Modified Bando-Wolff test

1 Range
This part of ISO 9117 specifies a test method for determining the surface drying characteristics of paint or varnish coatings dried by air action or chemical reactions of their components.

This method is not suitable for baked products.

The method can perform:

– As a “pass/fail” test, assess compliance with specific requirements by determining the state of surface dryness after a specified time;

– By determining the surface drying status at appropriate intervals until the surface drying time is obtained.

2 Normative references
The following reference files are required for the application 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 1513, Paints and varnishes – Examination and preparation of test samples

ISO 1514, Paints and varnishes – Standard panels for testing

ISO 2808, Paints and varnishes – Determination of film thickness

ISO 15528, Paints, varnishes and raw materials for paints and varnishes – Sampling

ISO 9117-3-2010 Drying tests for paints and varnishes – Part 3: Surface drying tests using small glass spheres

3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

3.1 Surface dry state
Determine the condition of the paint or varnish coated surface to determine if it is dry

3.2 Surface Drying
The state of paint or varnish coating when Palotini can be lightly brushed off without damaging the coated surface

3.3 Surface drying time
The time period between the application of a paint or varnish coating on the prepared test board and the assessment of the coating as only surface dry by the specified test procedure

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