Searches for and displays thermoplastic properties from the database to use in an analysis.
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Description tab
Provides general, descriptive information identifying the thermoplastic material.
- Family name The name of a family of materials, for example, Polycarbonate. Each material is a member of a family of materials.
- Trade name The name under which that the material or machine is traded.
- Manufacturer The manufacturer of the machine or material.
- Family abbreviation The shortened version of a material family name. For example, PC is the abbreviation for the family name Polycarbonate.
- Material structure Identifies the selected material as either amorphous or semi-crystalline.
- Data source Describes the origin of the selected data.
- Date last modified The time when changes were last made to the selected data.
- Date tested Specifies the date when the material was first tested.
- Data status Indicates whether the data is confidential.
Mechanical Properties tab
Specifies the mechanical properties of the thermoplastic material.
Note: If a property name is shown in red, it indicates that the property is not tested for this specific material. However, material data from the testing of a comparable generic grade was found to be suitable and is assigned to this material.
- Mechanical properties data Specifies the mechanical properties of the material (matrix + fibers/filler in the case of composite material) according to the five standard coefficients used to describe a viscoelastic material.
- Transversely isotropic coefficient of thermal expansion (CTE) data Specifies the thermal expansion properties of the material (matrix + fibers/filler in the case of composite material).
- View/edit test information... Displays the source of this material data, the date it was last modified, the date of testing, and the test method used.
- Use matrix properties If you are using a material that has isotropic or anisotropic matrix data, select Use 7 matrix properties from the drop down list. Then select Edit matrix properties to display the Matrix properties dialog box where you can edit the matrix properties.
Recommended Processing tab
Specifies the recommended processing conditions for the thermoplastic material.
Note: Once an analysis is finished, check the ejection temperature, maximum shear stress, and rate against the analysis results to determine if they are acceptable.
Note: If a property name is shown in red, the property is not tested for this specific material. However, material data from the testing of a comparable generic grade was found to be suitable and has been is assigned to this material.
- Mold surface temperature The temperature of the mold at the plastic-metal interface, where the plastic touches the mold.
- Melt temperature The temperature of the molten plastic, or melt, as it starts to flow into the cavity.
- Mold temperature range (recommended) The Mold Temperature area displays the range of mold wall temperatures that can be used for the material.
- Melt temperature range (recommended) The Melt Temperature area displays the range of melt temperatures that can be used for the material.
- Absolute maximum melt temperature The highest temperature recommended by the manufacturer for the material melt process settings.
- Ejection temperature The temperature at which a material is rigid enough to withstand ejection without permanent deformation or severe marking from the mold ejector pins.
- View/edit test information... Displays the source of this material data, the date that it was last modified, the date of testing, and the test method used.
- Maximum shear stress The shear stress, specific for each material, beyond which material degradation starts to occur.
- Maximum shear rate The shear rate value, specific for each material, beyond which material degradation starts to occur.
PVT Properties tab
Note: If a property name is shown in red, the property is not tested for this specific material. However, material data from the testing of a comparable generic grade was found to be suitable and is assigned to this material.
- Melt density Displays the density of the material, in the melt state, as described by the 2-Domain modified Tait PVT model.
- Solid density Displays the density of the selected material in the solid state as described by the 2-Domain modified Tait PVT model, at 0 MPa pressure and 25 degrees Celsius.
- 2-domain modified Tait PVT model coefficients Specifies the data-fitted values for the coefficients in the 2-domain modified Tait PVT model.
- View/edit test information... Displays the source of this material data, the date that it was last modified, the date of testing, and the test method used.
Rheological Properties
Specifies the rheological (flow-related) properties of the thermoplastic material.
Note: If a property name is shown in red, the property is not tested for this specific material. However, material data from the testing of a comparable generic grade was found to be suitable and is assigned to this material.
- Default viscosity model In order to simulate material viscosity properties accurately during a flow simulation, a mathematical viscosity model is required.
- Juncture loss method coefficients Bagley correction constants, C 1 and C 2 , specific for each resin. If the specific data does not exist, typical values can be used to evaluate whether juncture loss is significant to the application.
- Transition temperature The transition temperature is the polymer freeze temperature. At this temperature, the melt-to-solid transition occurs.
- View/edit test information... Displays the source of this material data, the date that it was last modified, the date of testing, and the test method used.
- Moldflow Viscosity Index A single point reference viscosity level (in Pa. sec.) at the designated temperature and a shear rate of 1000 1/sec.
- Melt mass-flow rate (MFR) MFR is an ISO standard measure which describes how easily a given melt flows. The higher the value the more readily it flows.
- Extension viscosity Specifies whether extension viscosity data is available for this material.
Shrinkage Properties
Specifies the shrinkage properties of the thermoplastic material.
Note: If a property name is shown in red, the property is not tested for this specific material. However, material data from the testing of a comparable generic grade was found to be suitable and is assigned to this material.
- Shrinkage model Shows the shrinkage model that will be used in the flow simulation.
- Observed nominal shrinkage The average shrinkage value that was observed during shrinkage testing.
- Observed shrinkage The maximum and minimum shrinkage values that were observed during shrinkage testing.
- View/edit test information... Displays the source of this material data, the date that it was last modified, the date of testing, and the test method used.
- Shrinkage Molding Summary The measured in plane shrinkage, parallel and perpendicular to the flow direction, under a range of injection molding conditions.
Thermal Properties tab
Specifies the thermal properties of the thermoplastic material.
Note: If a property name is shown in red, it indicates that the property has not been tested for this specific material. However, material data from the testing of a comparable generic grade was found to be suitable and has been assigned to this material.
- Specific heat data The amount of heat required to raise the temperature of a unit mass of material by one degree Centigrade.
- View/edit test information... Displays the source of this material data, the date it was last modified, the date of testing, and the test method that was used.
- Thermal conductivity data The thermal conductivity (k) of a material is the rate of heat transfer by conduction per unit length per degrees Celsius.