VSP HDT machine

Plastic materials, being heat sensitive in nature, have a lot of bearing on thermal environment of its performance. Thoough their behaviour in thermal condition is very complex, some simple yield tests are used to predict its behaviour and performance in a given condition. ‘Vicat Softening Point’ or ‘Heat Deflection Temperature’ is one of such yield points very cmmonly employed with such demanding applications. Vicat test consisst of penetrating a unit size indenter in a plastic surface with predefined load under constant rate of environmental temperature rise.