Shrinkage and mechanical properties of drying oil paints

Heritage Science

Table 1 Details of oil paints investigated, all made with cold-pressed linseed oil

Pigments and driers	Size [mm]	Thickness [µm]	PVC^a [%]	Date of casting
Lead white	20 × 12	130	44	07.02.1990
Lead white with litharge	18 × 9.5	140	44	06.02.1990
Zinc white	24 × 8.5	260	35	04.12.1998
Sap green	26 × 17	280	–	11.12.1998
Verdigris	18 × 10	420	53	25.01.1999
Red iron oxide	21 × 10	190	12	01.06.1992
Malachite	25 × 15	290	48	15.03.1990
Synthetic ultramarine	15 × 12	340	45	13.05.1992

^aPigment volume concentration, PVC = P/(P + B) where P and B are volumes of the pigment and the oil binder, respectively