ISO 6452:2021 pdf download – Rubber- or plastics-coated fabrics — Determination of fogging characteristics of trim materials in the interior of automobiles.
1 Scope This document specifies a test method which is intended to determine the fogging characteristics of rubber- or plastics-coated fabrics that are used as trim materials in the interior of motor vehicles. The method can also apply to fluid, pasty, powdered or solid raw materials which are the basis for such trim materials or from which the materials are manufactured. The method can also apply to other materials and finished products. The procedure is applicable to the measurement of fog condensate on glass surfaces within the limits of the test conditions. This test cannot measure accurately those cases in which: — the surface tension of the condensate is low, resulting in early coalescing into a thin transparent film; — the condensate is present in such a large quantity that the droplets coalesce and form a heavy oily/ clear film (this heavy film gives false readings). In such cases, the gravimetric method is preferred. 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 2813, Paints and varnishes — Determination of gloss value at 20°, 60° and 85° 3? Terms? and? definitions No terms and definitions are listed in this document. ISO and IEC maintain terminological databases for use in standardization at the following addresses: — ISO Online browsing platform: available at https:// www .iso .org/ obp — IEC Electropedia: available at http:// www .electropedia .org/
6.6 Float glass plates, of residential or windshield window quality, for condensation of the fogging, thickness (3 ± 0,2) mm, either square with minimum dimensions of (110 × 110) mm or circular with a diameter of 103 mm. The gloss values of all the plates used shall be the same to within ± 2 % units. The tin and non-tin surfaces of the plate shall be identified and the identification mark shall be placed on the plate. NOTE The tin and non-tin surfaces of the glass plate can be identified by viewing the surface in a darkened room under a UV light at 254 nm wavelength. The tin surface fluoresces when it is exposed to the UV light. 6.7 Filter paper, with a diameter of 110 mm and a mass per unit surface area of 90 g/m 2 . 6.8 Aluminium foil discs, thickness 0,03 mm, diameter (103 ± 1) mm. Store the prepared aluminium foil disc in a desiccator (6.15) to avoid condensation and contamination. 6.9 Gloss meter, with a 60° incident beam and 60° measurement beam in accordance with ISO 2813. 6.10 Spacer, designed to prevent contact with the condensate on the glass plate during gloss meter measurements, made of a suitable material such as paper or plastic with a circular hole for the measurements. The thickness of the spacer shall be (0,1 ± 0,02) mm (see Figure 2).