ISO 105-B06:1998 pdf download – Textiles — Tests for colour fastness — Part B06: Colour fastness and ageing to artificial light at high temperatures: Xenon arc fading lamp test.
The radiant power shall be chosen to ensure that the conditions given in 6.1 are fulfilled. The irradiance shall not deviate by more than 1 0 % from the average over the entire area occupied by the specimens and references. NOTE Ageing causes the spectral energy distribution and irradiance to change during the service life of the xenon arc lamps and optical filters. Replacement of the lamps and filters in accordance with the manufacturers’ instructions, allows the energy distribution and irradiance to be maintained. The irradiance can also be adjusted to keep it constant. Manufacturers who supply an exposure apparatus for use with this part of ISO 1 05 should ensure that the conditions specified in 4.2 and 6.1 are met. 4.2.3 Radiometer for monitoring the exposure conditions Since the irradiance at the surface of the specimen is affected by lamp intensity, lamp geometry and the specimen rack (lamp to specimen distance), repeatability and reproducibility of exposure shall be ensured by a monitoring radiometer which permits exposure to specified levels of irradiance (incident energy per unit area) at a point in the plane of the specimen rack (see B.3 and C.3). 4.2.4 Temperature sensors 4.2.4.1 Black-standard thermometer (BST) (for sets of conditions 1 to 3) The black-standard thermometer shall consist of a plain stainless steel plate, measuring about 70 mm 3 40 mm and with a thickness of about 0,5 mm, whose temperature is measured by a thermal resistor, with good heat-conducting properties, fitted to the reverse side. The metal plate is fixed to a plastic plate so that it is thermally insulated. It is coated with a black layer which has an absorption of at least 95 %, even in the infrared region.
4.2.5 Opaque cardboard This shall be of low sulfur content and free from fluorescent brightening agents, or other thin opaque material, partially covering the specimens and references. 4.2.6 Grey scale for assessing change in colour This shall be in accordance with ISO 1 05-A02. 4.2.7 Computerized spectral colour-measuring instrument This is for evaluating the change in colour according to ISO 1 05-A05. 4.2.8 Polyester (PES) nonwoven fabric This shall be at least 5 mm thick, with a mass per unit area of 1 00 g/m 2 ± 5 g/m 2 , for placing under the specimens. 5 Preparation of specimens and exposure card 5.1 Test the specimens either with their own backing material or on a layer of polyester nonwoven fabric (see 4.2.8). Unless agreed otherwise, the thickness of the underlying material shall be at least 5 mm. The limit specified in 5.4 shall be observed. The blue wool references shall be placed on white card that does not contain fluorescent brightening agents. 5.2 Cut sections of at least 40 mm 3 20 mm from flat materials and if necessary attach them by their narrow edges to white card that does not contain fluorescent brightening agents. For pile goods, carpets and prints, cut the sections somewhat larger.