ISO 16790:2005

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

Published By	Publication Date	Number of Pages
ISO	2005-06	22

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Categories: 83.080.20 - Thermoplastic materials, ISO

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Description

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.

Additional information

Published Code	ISO
Published By	International Organization for Standardization
Publication Date	2005-06
Pages Count	22
Language	English
Edition	1
File Size	235.5 KB
ICS Codes	83.080.20 - Thermoplastic materials

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ISO 16790:2005

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