Determination of the Glass Transition Temperature of a Plastic Material from the Variations in its Pendular Hardness (Determination de la Temperature de Transition Vitreuse d'une Matiere Plastique, par les Variations de sa Durete Pendulaire),
Abstract
A definition of the glass transition temperature, based on the variation of the pendular hardness (Persoz method) during the transition from the glass-like state to the rubber-like state, is given. The data are applied to four polymers (polystyrenes), and a comparison with other experimental data on the same materials is given. A simple and cheap hardness tester machine is described with which the Brewster coefficient of synthetic resins and other materials can be determined immediately after application of the load.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1965
- Accession Number
- ADA307728
Entities
People
- Bernard Persoz
- Genevieve Grenier
Organizations
- National Aeronautics and Space Administration