4. PVC formulation
It's hardly possible to talk about PVC stabilization without mentioning PVC formulation itself. PVC is by far the most additivated of the mass-market polymers. The complexity of the way PVC degrades during processing obliges the processor to design a complex formulation containing a whole series of additives.
It is typical in the PVC world for the formulation, traditionally called compound, to be expressed in "percent resin" (pcr) (table 4 ).
Thermal stabilizers are absolutely essential to limit the thermomechanical degradation of PVC, but they are not enough. Without the presence of lubricants (internal and external), PVC could not be processed on industrial equipment without degrading.
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PVC formulation
Application guide
Bibliography
Standards and norms
- Plastiques. Détermination de l'indice de fluidité à chaud des matières plastiques en masse (MFR) et en volume (MVR) - ISO 1133 - (2005)
- Plastiques. Détermination de l'indice de fluidité à chaud des matières plastiques en masse (MFR) et en volume (MVR) - ISO 1133/AC1 - (2006)
- Préparation d'une feuille de PVC pour test de stabilité thermique - ASTM D 2115 - (2004)
- Test de dégradation thermique dans...
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Organotin salts
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Galata (Chemtura)
...Statistical and economic data
According to figures published by ESPA (European Stabilisers Producers Association) and the European PVC Producers Association (Vinyl 2010), European consumption of thermal stabilisers for PVC in 2010 is estimated at around 160,000 t for some 5.5 million tonnes of PVC, with the breakdown by stabiliser type shown in figure
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