接触角测量来表征脱模剂

Two injection molded plastic samples were tested for mold release agent. The samples were
hemispherical in shape. Contact angles were measured using water and methylene iodide
(diiodomethane). The samples had been handled somewhat, so it was not surprising there was
some variation in measurements at different locations. Because of this, five measurements of
each fluid were made on each sample. The figure below shows a typical drop, in this case
methylene iodide on sample #2.