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