Injection Molding of LDPE/BaSO4 Blends
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G. Shearer
Abstract
The injection mold filling behavior of a blend of low density polyethylene (LDPE) and barium sulphate (BaSO4) was studied experimentally and compared with that of pure LDPE. The method of short shots was used to analyze the mold filling behavior. An experimental study using a full factorial design was implemented with the following factors: mold temperature, injection speed and injection time. Experimental results and computer simulation predictions of the mold filling stage were found to be in acceptable agreement. The produced short shots with the LDPE/BaSO4 blend have significantly lower percentages of volume filled than those of the corresponding short shots with the pure LDPE. The increase in the melt viscosity and density of the polymer resin with the addition of BaSO4 cannot be neglected when producing injection molded articles with LDPE/BaSO4 blends. To study the deviations between the experimental results and the computer simulation predictions, a factorial numerical study was completed. The results show that the simulation predictions are significantly affected by the accuracy of the polymer material properties.
© 1997, Carl Hanser Verlag, Munich
Artikel in diesem Heft
- Contents
- Contents
- Editorial
- Third in a Series: Pioneers of Polymer Processing: Charles Goodyear
- Screw Extrusion/Mixing
- Chaotic Features of Flow in Polymer Processing Equipment-Relevance to Distributive Mixing
- Influence of Design on Mixing Efficiency in a Variable Intermeshing Clearance Mixer
- Simulation of Non-Isothermal Flow in a Modular Buss Kneader and Comparison with Experiment
- Rheological Behaviour of LLDPE/LDPE Blends under Elongational Deformation
- Effect of Compounding Conditions on Mechanical Properties of Glass Fiber-Reinforced Polyamide-6
- Die Extrusion
- A New Approach to Simulation of Die Flow which Incorporates the Extruder and Rotating Screw Tips in the Analysis
- New Aspects Concerning the Design of Coathanger Dies
- Film
- On-Line Birefringence Measurement in Film Blowing of a Linear Low Density Polyethylene
- Brittle Melt Rupture Phenomena in Polymer Processing
- Moulding
- Injection Molding of LDPE/BaSO4 Blends
- An Experimental Study of Rotational Molding of Polypropylene/Polyethylene Copolymers
- Determination of the Inter-Relationships Between Processing Conditions and Properties of an Injection Molded Silicone Ring Using an Experimental Design
- Numerical Simulation of the Flow and Fiber Orientation in Reinforced Thermoplastic Injection Molded Products
- Wide-Angle X-Ray, Densitometric and Microscopical Studies on Injection Molded Polypropylene Disks
Artikel in diesem Heft
- Contents
- Contents
- Editorial
- Third in a Series: Pioneers of Polymer Processing: Charles Goodyear
- Screw Extrusion/Mixing
- Chaotic Features of Flow in Polymer Processing Equipment-Relevance to Distributive Mixing
- Influence of Design on Mixing Efficiency in a Variable Intermeshing Clearance Mixer
- Simulation of Non-Isothermal Flow in a Modular Buss Kneader and Comparison with Experiment
- Rheological Behaviour of LLDPE/LDPE Blends under Elongational Deformation
- Effect of Compounding Conditions on Mechanical Properties of Glass Fiber-Reinforced Polyamide-6
- Die Extrusion
- A New Approach to Simulation of Die Flow which Incorporates the Extruder and Rotating Screw Tips in the Analysis
- New Aspects Concerning the Design of Coathanger Dies
- Film
- On-Line Birefringence Measurement in Film Blowing of a Linear Low Density Polyethylene
- Brittle Melt Rupture Phenomena in Polymer Processing
- Moulding
- Injection Molding of LDPE/BaSO4 Blends
- An Experimental Study of Rotational Molding of Polypropylene/Polyethylene Copolymers
- Determination of the Inter-Relationships Between Processing Conditions and Properties of an Injection Molded Silicone Ring Using an Experimental Design
- Numerical Simulation of the Flow and Fiber Orientation in Reinforced Thermoplastic Injection Molded Products
- Wide-Angle X-Ray, Densitometric and Microscopical Studies on Injection Molded Polypropylene Disks
