Softening point

The softening point is the temperature at which a material softens beyond some arbitrary softness.[1] It can be determined, for example, by the Vicat method (ASTM-D1525 or ISO 306), Heat Deflection Test (ASTM-D648) or a ring and ball method (ISO 4625 or ASTM E28-67/E28-99 or ASTM D36 or ASTM D6493 - 11). A ring and ball apparatus can also be used for the determination of softening point of bituminous materials.[2] These materials have a viscoelastic property, which means they become softer and less viscose under a specific temperature. To use these materials properly, we must know at what temperature they soften. [3]

See also

References
  1. Petrie, Edward (2006). Handbook of Adhesives and Sealants. McGraw-Hill. p. 146. ISBN 0-07-147916-3.
  2. "Softening Point / Ring & Ball Apparatus". http://cooper.co.uk. Cooper Research Technology Ltd. Retrieved 16 July 2015. External link in |website= (help)
  3. "Bitumen Tests". Infinity Galaxy | Infinity import export. Retrieved 2020-11-21.
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