SPECIFIC GRAVITY TESTING OF POLYMERS AND PLASTICS
IMR performs specific gravity/density testing by the Archimedes Method, measuring the mass of a unit volume of a polymer materials in a standard lab atmosphere, and again while the material is submerged in water. A substance with a specific gravity of <1 will float in water.
The specific gravity of a composite material is actually the specific gravity of the raw polymeric material used in fabrication.
Because polyethylene and polypropylene have specific gravities in the range 0.90–0.96, they will float, which must be considered if the final products operating environment is exposed to water.
To discover more about our gravity testing capabilities, click here to request a quote, or click on the button below.
Brookfield Rotational Viscosity
Coefficient of Expansion
Coefficient of Friction
Compressive Properties (-240ºF to 660ºF)
Dynamic Mechanical Analysis (DMA)
Flammability (UL94, FMVSS 302, ISO 3795, SAE J369, ASTM D5132)
Flexural Properties (-240ºF to 660ºF)
Gloss (ASTM D523, D4039)
Hardness Testing (Barcol, Durometer/Shore)
Heat Deflection by TMA (E2092)
Lap Shear Testing
Melt Flow Rate/Index