Material Properties

Material properties are accessible from the Materials Database and My Materials tabs in the Materials dialog.

Materials Database Tab

The Materials Database tab lists the materials included with Inspire PolyFoam. The tab also provides access to properties that you can review and modify for each material. You can save any modified materials as new materials and access them and their properties through My Materials tab.

Select a material from the list. The primary properties for the selected material are organized through the Material, Chemical Reaction, Mixing Ratio, Viscosity Model and Foam Thixo Model tabs.

Material Tab

The Material tab includes a second row of tabs to define density, conductivity, molecular weight and boiling temperature for the polymer, physical blowing agent liquid and gas, and CO2 for a given material.

Chemical Reaction Tab

The Chemical Reaction tab includes a second row of tabs to define properties for Reaction Type, Gelling, Chemical Blowing, Physical Blowing, Gelling Ratio and CO2 Saturation. These properties include:

Property Description
Type Reaction type is irreversible.
A Variable related to the kinetics of chemical reaction.
E Variable related to the kinetics of chemical reaction.
dH Variable related to the heat generation/dissipation of chemical reaction.
Temperature Temperature to start the gelling reaction.
Ratio The gelling ratio is related to the critical solid fraction. When the defined ratio is reached, the foam expansion halts.
Saturation The saturation level defines the initial amount of CO2 that is dissolved in the polyurethane. Saturation is related to the cream time.

Mixing Ratio Tab

The Mixing Ratio tab includes the following material properties:

Property Description
Isocyanate Mixing ratio = Polyol (100g): Isocyanate [g]
OH Quantity of KOH [mgKOH/g]
Water Mass of water [g]
NCO Percentage of NCO in the polyisocyanate by weight [%]
Physical Blowing Mass of combined physical blowing agent [g]

Viscosity Model Tab

The Viscosity Model tab includes a table to define the Gelling Rate percentage, which is calculated according to the amount of OH or NCO for a given material.

Foam Thixo Model Tab

The Foam Thixotropic Model tab includes three rheological models: Carreau, Bingham and Power-Law. Choose the model that is appropriate for your material and define the exponent, viscosity and constant.