Vicat softening temperature

{
  "id": "MLC-T-CHM-012572",
  "term": "Vicat softening temperature",
  "field": "Chemistry",
  "definition": "The temperature at which a flat-ended needle of a specified cross-section penetrates a polymer specimen to a depth of 1 mm under a given load. This value indicates the temperature at which a polymer begins to soften significantly under heat and pressure. It is a measure of the polymer's resistance to heat distortion, determined by standard test methods like ISO 306.",
  "synonyms": [
    "softening point",
    "Vicat hardness",
    "Vicat softening point"
  ],
  "subject": "Polymer",
  "see_also": [
    "melting temperature"
  ],
  "references": [
    "PAC, 2013, 85, 1017. 'Glossary of terms relating to thermal and thermomechanical properties of polymers (IUPAC Recommendations 2013)' on page 1043 (https://doi.org/10.1351/PAC-REC-12-03-02)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/vicat-softening-temperature/"
}