BS ISO 3011:2021 pdf download – Rubber- or plastics-coated fabrics — 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 https://www.iso.org/obp — IEC Electropedia: 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. For non-product tests, the minimum time between manufacture and commencement of testing shall be 16 h. The maximum time between manufacture and testing shall be 4 weeks. For product tests, the minimum time between manufacture and commencement of testing shall be 120 h, during which period the test pieces shall be stored at the standard...
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