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ISO 16790:2005

Plastics -- Determination of drawing characteristics of thermoplastics in the molten state

Üldinfo
Kehtetu alates 17.02.2021
Tegevusala (ICS grupid)
83.080.20 Termoplastid
Direktiivid või määrused
puuduvad
Standardi ajalugu
Staatus
Kuupäev
Tüüp
Nimetus
17.02.2021
Põhitekst
23.06.2005
Põhitekst
ISO 16790:2005 specifies a method for determining the drawing and break characteristics of molten plastics. The method involves the measurement of the force generated in deforming a molten filament under defined extrusion temperature and drawing conditions. Data is generated under non-isothermal and non-homogeneous deformation conditions. However, it is useful for the interpretation of polymer behaviour in extensional flow. The method is suitable for thermoplastics moulding and extrusion materials that can be extruded using a capillary extrusion rheometer, or an extruder with capillary rod die or other extrusion devices, and have sufficient melt strength to be handled without difficulty. Such materials should be chemically stable and produce a uniform extrudate free from heterogeneities, bubbles, unmelted impurities, etc. This method may provide information on: processability for all extrusion techniques;the effect of mechanical and thermal history;the effect of chemical structure, such as branching, entanglements and molecular mass.
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