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5. Influence on some physical characteristics of flexible PVC
5.1 General
The qualities of a plasticizer are measured by the properties it confers on the plastic objects in which it is incorporated. The assessment criteria vary according to the use of the finished products. The most important section of the specifications concerns the mechanical characteristics of plasticized objects under various stress conditions:
tensile properties at imposed speed and operating temperature ;
tear resistance ;
changes in properties after one or more cycles under stress (artificial ageing at high or low temperatures, exposure to UV radiation);
cold brittleness temperature ;
flexibility....
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Influence on some physical characteristics of flexible PVC
Formula optimization considerations
References
- (1) - SEARS (J.K.), DARBY (J.R.) - The technology of plasticizers. - Willey & Sons Ed., 1 166 p. (ouvrage encyclopédique donnant près de 1 500 références sur 240 p. et décrivant les propriétés physiques de l'ensemble des plastifiants utilisés aujourd'hui et les propriétés des produits plastifiés) (1982).
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Standardization
- Plastiques et ébonite. Détermination de la dureté par pénétration au moyen d'un duromètre (Dureté Shore) (indice de classement : T 51-109). - NF ISO 868 - 9-86
- Plastiques. Détermination de la rigidité en torsion des plastiques souples. Partie 1 : Méthode générale (indice de classement : T 51-102). - NF ISO 458 /1 - 9-86
NF: French standards published by AFNOR (Association Française de Normalisation)....
Main suppliers of phthalates (and their brand names)
BASF AG (Palatinate) – BASF (Cie française).
Exxon Chemical Co. (Jayflex ) – Exxon Chemical France.
Hüls AG (Vestinol ) – Hüls France.
ICI Ltd (Hexaplast ) – ICI France SA.
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