Date post: | 05-Jan-2016 |
Category: |
Documents |
Upload: | sarah-willis |
View: | 272 times |
Download: | 6 times |
Composition of Plastics
Plastics Tech 1
Composition of Plastics
Lesson Essential Question: What are plastics?
Raw Materials in Plastic Resins
Coal Air Water Petroleum Natural Gas Limestone
Production of Plastic Resins
Chemists are responsible for producing synthetic resins
Plastic is a forced combination of molecules
Monomer - a simple molecule of synthetic resin.
Polymer – a combination of monomers to form a long chain molecule.
Production of Plastic Resins
Production of Plastic Resins
Polymerization - process of making plastic, linking of monomers to form polymers.
Homopolymerization – combining of like monomers into polymers.
Copolymerization – combining two or more different monomer units
Autoclave - a piece of equipment that applies heat and pressure to combine monomers to form polymers.
Production of Plastic Resins
Production of Plastic Resins
Types of Plastics Thermoplastic – plastic which can
be reprocessed or reused. Thermosetting plastic– cannot be
reused/reformed once heated. Definition of plastics – a synthetic
substance made up of a long chain of complex molecules capable of being formed or molded into any desired shape.
Types of Plastics
Types of Plastics
Types of Plastics
Plastics
Plastics Video Clips Polyethylene Recycling