Polymer Processing - 3720 Intro-Polymer\/Fiber Enterprise Polymer Processing 1 Overview Review on Polymers What is a polymer Types of polymers Why are

Polymer Processing - 3720 Intro-Polymer/Fiber Enterprise...

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04/07/14 1 3720- Intro-Polymer/Fiber Enterprise Polymer Processing
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04/07/14 2 Overview Review on Polymers What is a polymer? Types of polymers Why are polymers good? Processing of polymers Mechanical properties
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04/07/14 3 What is a polymer poly = many mer = unit long-chain hydrocarbons 1,000 - 10,000 units long 10 4 - 10 6 gm/gm-mole
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04/07/14 4 Types of polymers Thermoplastics Can be melted and solidified repeatedly e.g. PP,PE , Nylon, PET etc PP bags
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04/07/14 5 Types of polymers Polyester shirts e.g. of polyester
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04/07/14 6 Types of polymers Thermosets react to polymerize during forming cross-linked networks can’t be remelted decompose with too much heat e.g. Epoxy, unsaturated polyester , phenol formaldehyde etc Epoxy glue
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04/07/14 7 Types of polymers Elastomers large, recoverable, elastic deformations soft low glass transition temperatures partially cross-linked networks can be thermoset or thermoplastic e.g. Rubber
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04/07/14 8 Why are polymers good? Light Corrosion resistant Strong Easily formed into complex, 3D shapes no further machining necessary Good filters water / gas - permeable / impermeable reverse osmosis oxygenators
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04/07/14 9 Processing of Polymers Batch mixing Extrusion molding Single screw extrusion Blow film extrusion Extrusion coating Twin screw extrusion Injection molding Reaction Injection molding Compression molding
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04/07/14 10 Batch Mixing Two blade Mixing and compounding Rubber and Plastic Tire manufacturing : carbon black and additives incorporate with rubber Pitcure form Brabender web site
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04/07/14 11 Why we need to do extrusion? Compounding and mixing Solid melt product shape Mixing polymer + additives Reinforcing polymer Glass or carbon or natural fibers Blending of different MW polymers Reactive extrusion Extrusion
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04/07/14 12 Extrusion Separation Removal of volatiles ( residual monomer or solvent or water) Depolymerization Filtering of polymer melts to separate particulate impurities.
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04/07/14 13 Single Screw extruder
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04/07/14 14 Single Screw extruder Build pressure polymer melt extruded through a die various extrusion lines for the manufacture of: blown films cast films thermoforming sheets synthetic fibers pipes profiles
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04/07/14 15 Feed zone - Solid bed Pellets crushed together Air ejected
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  • Fall '09
  • REALFF
  • Plastics industry, extrusion coating, Reactive Extrusion, Blow film extrusion

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