Français
4. Control
Readers are referred to the articles
When thermoplastic polyester is molded under the wrong conditions (too high a temperature or the presence of moisture), it degrades without changing its appearance significantly. Thermal degradation can result in reduced melt viscosity and lower mechanical properties.
A comparison of viscosity index measurements on granules and parts enables us to assess polymer degradation during processing.
Impact resistance measurements, before and after molding, can also be used to assess processing quality.
...
The Ultimate Scientific and Technical Reference
This article is included in
Plastics and composites
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Control
Applications
Also in our database
References
- WAMBACH (A.D.), KRAMER (M.) - Thermoplastics polyesters exhibit stable electrical and mechanical properties in hot, moist environments (Les polyesters thermoplastiques présentent des propriétés électriques et mécaniques stables dans des atmosphères chaudes et humides). - 29 th Annual Technical Conference,...
Standards and norms
Association française de normalisation Afnor http://www.afnor.fr
- Plastiques. Détermination du taux de cendres. Polyalkylène téréphtalates - NF T 51-540 - 11-85
- Poly(éthylène téréphtalate) en granulés. Détermination de la teneur en eau - NF T 51-541 - 10-82
- Plastiques. Détermination du comportement à la fusion (température de fusion ou plage de températures de fusion) des polymères semi-cristallins...
The Ultimate Scientific and Technical Reference
