6533b834fe1ef96bd129cd03
RESEARCH PRODUCT
ESTIMATION OF INJECTION PRESSURE DURING MOLD FILLING.
Giuseppe Titomanliosubject
Materials sciencePolymers and PlasticsFlow (psychology)Bulk temperatureThermodynamicsGeneral ChemistryThermal diffusivityAmorphous solidlaw.inventionPhysics::Fluid Dynamicschemistry.chemical_compoundchemistrylawLatent heatMaterials ChemistryPolystyreneCrystallizationDimensionless quantitydescription
Dimensionless diagrams for estimating the bulk temperature of the flow front and injection pressure in the limit of small viscous generation are obtained. Also, a criterion for neglecting viscous generation is identified, The diagrams, based on the Lord and Williams model, refer to rectangular geometry and amorphous materials. A satisfactory comparison is obtained with literature data taken on polystyrene. A reasonable estimate of polyethylene injection pressure was obtained by roughly accounting for latent heat of crystallization through modified thermal diffusivity.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1982-07-01 |