ISO 3011 pdf free download
ISO 3011-2021 pdf free download.Rubber- or plastics-coated fabrics一 Determination of resistance to ozone cracking under static conditions.
This document specifies a method for the determination of the resistance of fabrics coated with rubber or plastics to ozone cracking under static conditions.
The test is designed to determine the relative resistance to cracking of fabric coated with rubber or plastics when exposed under static strain to air containing ozone in the absence of direct sunlight.
Like all ageing tests, it should be considered as a means of comparing articles of the same composition and destined for the same application, but not as an absolute criterion. It is preferable to limit the significance of the test by considering it only as a means of control when a fabric attains a resistance superior to a threshold given in comparison with a certain type of degradation.
Taking these remarks into account, the results obtained at the time of test cannot be taken as a prediction of the length of life of the product.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 1431-1:2012, Rubber, vulcanized or thermoplastic — Resistance to ozone cracking — Part 1: Static and dynamic strain testing
ISO 2286-1, Rubber- or plastics-coated fabrics — Determination of roll characteristics — Part 1: Methods for determination of length, width and net mass
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
ISO Online browsing platform: available at http5://www rgJobp
— TEC Electroped ia: available at https://www.electropedia.org/
4 Principle
Test pieces are exposed to ozone under specified conditions. The effects of the ozone are assessed by measurement of the time at which the first crack appears or of the time of exposure during which no cracks appear as appropriate.
5 Apparatus
5.1 Test chamber and ancillary apparatus, as specified in ISO 143 1-1.
5.2 Test piece holder, comprising a mandrel and clamps (see Figure 1).
The diameter of the mandrel shall be 2 times, 5 times, 10 times or 20 times the thickness of the test piece, as agreed between the interested parties, but it shall not be less than 0,8 mm. The mandrel and clamps shall be made of a material that does not absorb ozone, for example stainless steel, polymethacrylate, wood coated with a lacquer that does not absorb ozone, or duralumin, and shall have a smooth finish.ISO 3011 pdf download.
