Structure and Properties of Inflation Films of β-Phase Nucleating Agent-Added Polypropylene
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M. Fujiyama
Abstract
To a homo-isotactic polypropylene (PP) was added 0 to 10 ppm of quinacridonequinone which was a β-phase nucleating agent for PP. The structure and properties have been studied on the inflation films processed from the PPs by the water-cooling or air-cooling methods. The effect of cooling conditions on crystallization has been also studied for reference. Even PPs containing β-phase nucleating agent do not form the β-phase but the smectic or α-phase at low cooling temperature. However, compared with PP without β-phase nucleating agent, they form the α-phase at lower cooling temperature and form the β-phase at high cooling temperature. Even PPs containing β-phase nucleating agent form only the smectic phase in the water-cooled inflation films but form the β-phase in the air-cooled inflation films if β-phase nucleating agent contents are high. Although the film properties are generally not so much affected by the addition of the β-phase nucleating agent, the dart impact strength increases for the air-cooled films which contain the β-phase.
© 1996, Carl Hanser Verlag, Munich
Artikel in diesem Heft
- Contents
- Contents
- Editorial
- Eighteenth in a Series: Toshiba Machine
- Screw Extrusion
- Theoretical and Experimental Investigations of the Melting of Pellets in Co-Rotating Twin-Screw Extruders
- An Improved Flow Simulation Model for a Tangential Counter-Rotating Twin Screw Extruder
- Modeling and Experimental Study of the Flow in a Simplified Cavity Transfer Mixer
- An Analytical Model of the Conveying Behaviour of Closely Intermeshing Co-rotating Twin Screw Extruders
- Reactive Processing
- Simulation of Continuous Polymerization in a Modular Intermeshing Co-rotating Twin Screw Extruder
- Reactive Blending in a Twin Screw Extruder
- Die Extrusion
- Viscoelastic Simulations of Stratified Bicomponent Extrusion through Slit Dies
- Fibers
- Spinnability of Polymer Melts – a Complex Problem in Basic Research1)
- Molding
- Structure and Properties of Inflation Films of β-Phase Nucleating Agent-Added Polypropylene
- Inverse Modeling of Injection Molding Thermal Stresses to Optimize Temperature and Pressure History
- An Assessment of Thermal Stresses in Injection Moulded ABS Copolymer
- Rapid Communications
- Experimental Study on the Injection Compression Molding of Parts with Precision Contours
Artikel in diesem Heft
- Contents
- Contents
- Editorial
- Eighteenth in a Series: Toshiba Machine
- Screw Extrusion
- Theoretical and Experimental Investigations of the Melting of Pellets in Co-Rotating Twin-Screw Extruders
- An Improved Flow Simulation Model for a Tangential Counter-Rotating Twin Screw Extruder
- Modeling and Experimental Study of the Flow in a Simplified Cavity Transfer Mixer
- An Analytical Model of the Conveying Behaviour of Closely Intermeshing Co-rotating Twin Screw Extruders
- Reactive Processing
- Simulation of Continuous Polymerization in a Modular Intermeshing Co-rotating Twin Screw Extruder
- Reactive Blending in a Twin Screw Extruder
- Die Extrusion
- Viscoelastic Simulations of Stratified Bicomponent Extrusion through Slit Dies
- Fibers
- Spinnability of Polymer Melts – a Complex Problem in Basic Research1)
- Molding
- Structure and Properties of Inflation Films of β-Phase Nucleating Agent-Added Polypropylene
- Inverse Modeling of Injection Molding Thermal Stresses to Optimize Temperature and Pressure History
- An Assessment of Thermal Stresses in Injection Moulded ABS Copolymer
- Rapid Communications
- Experimental Study on the Injection Compression Molding of Parts with Precision Contours
