Frictional surface temperature determination of high-temperature-resistant semicrystalline polymers by using their double melting features

Ming Qiu Zhang, Le Song, Han Min Zeng, Klaus Friedrich, J. Karger-Kocsis

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Most semicrystalline polymers exhibit multiple melting peaks in the course of normal differential scanning calorimetry (DSC) measurements. When their amorphous versions are annealed above the glass transition temperatures, the lower endothermic temperatures (Tm1) appearing on the subsequent DSC heating traces are highly dependent on the annealing temperature (Tα). In consideration of the fact that temperature is the critical environmental factor controlling polymer crystallization, thermal history experienced by the material during annealing in the DSC cell is basically equivalent to that under frictional heating, and the surface temperature prevailing under sliding wear can be estimated from DSC scans taken on the worn surface. In this case, the lower melting peak temperature observed (which can be correlated with the annealing temperature) serves as an indicator for the flash temperature. In addition, this thermoanalytical method can also provide information about microstructural changes due to wearing.

Original languageEnglish
Pages (from-to)589-593
Number of pages5
JournalJournal of Applied Polymer Science
Volume63
Issue number5
Publication statusPublished - Jan 31 1997

Fingerprint

Polymers
Melting
Differential scanning calorimetry
Temperature
Annealing
Heating
Crystallization
Wear of materials

Keywords

  • Annealing
  • Friction
  • Multiple melting behavior
  • PEEK
  • Semi-crystalline thermoplastics
  • Sliding
  • Surface temperature

ASJC Scopus subject areas

  • Polymers and Plastics

Cite this

Frictional surface temperature determination of high-temperature-resistant semicrystalline polymers by using their double melting features. / Zhang, Ming Qiu; Song, Le; Zeng, Han Min; Friedrich, Klaus; Karger-Kocsis, J.

In: Journal of Applied Polymer Science, Vol. 63, No. 5, 31.01.1997, p. 589-593.

Research output: Contribution to journalArticle

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