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ISO 16565:2013 pdf free

ISO 16565:2013 pdf free.Rubber一Determination of 5-ethylidenenorbornene or dicyclopentadiene in ethylene-propylene-diene terpolymers
The instrument shall be capable of spectral accumulation, averaging and subtracting. Water is the primary source of interference in this method. Methods, physical and electronic, which minimize the moisture level and moisture-level variation are required to obtain the highest precision. The preferred method is to use an instrument equipped with a dry-gas purge and specimen shuttle, which permits alternating and repetitive collection of single-beam specimen and background spectra (see Clause 5).
Alternatively, should a specimen shuttle be unavailable, careful purging of the specimen compartment with dry nitrogen can yield satisfactory results. High precision of calibration-standard data is indicative of adequate purging. W hen moisture interference is not removed by purging, spectral subtraction of water vapour may be used. A procedure for further development of the method is described in Annex A.
Place 0,20 g±0,05 g of the material to be analysed between two sheets (see 3.3) in the mould (see 3.2.1).Place the mould between the press platens heated to 125 °C±5 °C and apply 4 MPa pressure for 60s±10s.
Should the material be highly viscous, the mould may be heated to 175 °C±5 °C.
Cool the material to ambient temperature. Cut out a piece of film of approximately 15 mm by 50 mm.Detach the specimen film from the sheets (see 3.3), and position it on the spectrophotometer specimen compartment window.
When using the thinner mould described in 3.2.2, place a small piece (0,04 g to 0,06 g) of the material to be analysed in the mould opening between two sheets (see 3.3) and compress as in Remove the mould from the press, turn it over and compress it again. Then, remove the mould from the press and allow it to cool to ambient temperature. When cool, carefully remove the sheets (see 3.3), allowing the specimen film to remain attached to the mould.
Place a washer (see 3.2.3) on top of a salt plate. Place a small amount (about 0,3 g) of the liquid EPDM polymer to be analysed in the centre of the washer, illing the hole completely. Place a second salt plate on top of the filled washer. Gently place a 1 kg weight on top of the salt plate/washer assembly and allow the weighted assembly to sit for 2 min to 3 min. (For viscous samples, it may be necessary to warm the sample prior to compressing) Remove the 1 kg weight and, if necessary, allow to cool. Wipe off any excess material that might have been pressed out of the assembly.ISO 16565 pdf download.


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