Standard: EN 1427, ASTM D36, AASHTO T53
VSP is used to determine the deflection temperature limit for specific application and comparing the heat softening characteristics of thermoplastic material at constant load in oil up to 300º C with specified rate of rise.
Plastic materials being heat sensitive in nature has a lot of bearing on its thermal environment for its performance. Though their behavior in thermal conditions is very complex, some simple yield tests are used to predict it’s behavior and performance in given conditions. This is one of such yield point very commonly employed with such demanding application.
The apparatus is controlled with precisely designed micro controller, which controls the temperature with specified rate of rise. Deflection or insertion of pin is measured with the help of dial gauge.
Determination of Vicat Softening Point temperature
Definition: Vicat Softening point temperature is the temperature at which a flat-ended needle of 1 mm2 circular section will penetrate a thermoplastic specimen to a depth of 2 mm under a specified load using a selected uniform rate of temperature rise. The two standard permissible rate of rise of temperature are 50 ± 50°C/hr. and 120 ± 12°C/hrs
Principle & Significance: Determination of temperature at which a standard indenter penetrates 1mm in to the surface of plastic test specimen under one of the load as given above. During the test temperature is raised at uniform rate of temperature rise. The two standard permissible rate of rise of temperature are 50 ± 50°C/hr. and 120 ± 12°C/hrs. The temperature at 1 mm penetration is quoted as Vicat Softening Temperature (VST) in °C
This Apparatus is supported by versatile window based software to control and visualize the process of test on computer screen. Different tests can be recorded and compared on the screen.
|Temp. Range||0 to 200ºC||0 to 200 ºC||0 to 200 ºC||0 to 200 ºC||0 to 200 ºC||0 to 200 ºC||0 to 200 ºC||0 to 200 ºC|
|Rate of rise||Selectable||Selectable||Selectable||Selectable||Selectable||Selectable||Selectable||Selectable|
|Interface||N.A.||N.A.||N.A.||N.A.||Rs 232||Rs 232||Rs 232||Rs 232|
|Body||M.S.inner SS-304||M.S.inner SS-304||M.S.inner SS-304||M.S.inner SS-304||M.S.inner SS-304||M.S.inner SS-304||M.S.inner SS-304||M.S.inner SS-304|