Typical Formulation Ingredients
Phase
Ingredient
Parts by weight
A
PVC resin (dispersion grade powder)
A
Stabilizer (barium, cadmium)
Typical Properties
Butt tensile strength after 60 mins at 175°C (Tensile, psi)
Butt tensile strength after 60 mins at 175°C (Type failure)
Hardness, Shore A, aged 24 hrs
Resulting Properties
Plastisols require temperatures on the order of 130°C to 400°C to “cure”. The main feature of this formulation is that it will harden at the lower temperature range (e.g., 45 mins at 150°C). Such a plastisol can be supplied as a one component paste without the need for metering or mixing prior to application. Moderately high bond strength can be achieved to many common substrates. Long-term flexibility is a distinct advantage in that the plastisol can accommodate relative motion between substrates and act as a vibration damper. This feature enables PVC plastisols to compete in the sealant markets.
The formulation provided is for a flexible, high temperature structural type of plastisol that can be used in structural applications.
Bullman, A.R., “Plastisol Sealants for Automotive Applications”, Journal Elastoplastics, Vol. 1, October 1969, p. 265