Mike Leo Jack Rulander Jared Spaniol Introduction Spain, 1954 - PowerPoint PPT Presentation

Mike Leo Jack Rulander Jared Spaniol

Introduction  Spain, 1954  Professor Giulio Natta  Poly(1-Methylethylene)  Very Versatile  Wide Range of Applications and Fabrication Methods

Production  Naphtha  Petrochemical Steam Crackers  Olefins (including propylene)  Ziegler-Natta Polymerization  Polypropylene

Terribly Boring Facts  Annual Production of PP is 8.4 Million Metric Tons  Production Forms  Fiber  Pellet  Tape  Continuous Filament  Sheets, Rods, and Flakes

Terribly Boring Facts Cont’d  Available Grades  Homopolymer  Block Copolymer  Random Copolymer  Density  .093 g/cc  One of the few plastics less dense than water

Properties  Flammability  Classified as HB  Classified as “Quite Flammable”  Hot, Flaming Balls  Semi-Crystalline  Tm-350 °F  Tg-15 °F

Process Settings  Melt Temp 420-540 °F  Injection Pressure 8260-12500 psi  Fill Rate .5-2 in/sec  Mold Temp 84.2-160 °F  Max Regrind 15-30%  Works Well With All Gates

Advantages  Living Hinge Applications  Excellent Chemical Resistance  Low Density  High Impact Strength  Cheap  Low Tg-Flexible  Thermally Stable  Easily Modified  Not Hygroscopic

Disadvantages  Highly Flammable  Poor Weathering Resistance  Low Notched Impact Strength  Difficult to Decorate  Poor Low Temp Resistance

Major Suppliers  Exxon Mobile  Honam Petrochemicals  Hyundai Petrochemicals  Shell  Samsung  Huntsman Polymers

Common Uses  Medical Field  Food Storage  Automotive Parts  Textiles  Many Others

Questions