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Thermosetting, thermoplastics and elastomers
- 1. Thermosetting, Thermoplastics andElastomers By Olmo Vizan
- 2. Thermosetting • Charcteristics: • They retain strength and shape even when heated produce permanent components solid shapes
- 3. • Properties: •Exposies exhibit elasticity chemical resistance • Phenolics fairy simple to mold but brittle strong and hard relatively easy to cure
- 4. Aplications: It canbe aplied for a/an electonic chip fibre reinforced composite polimeric coating spectacle lenses dental fillings
- 5. Thermoplastics • Characteristics: • It’s a type of plastic made from polymer resins when heated homogenized liquid becomes when cooled hard
- 6. • Properties: •Are defined as; polymers that can be melted for different uses. Have the simplest molecular structure with chemical independent macromolecules • By heating are softened or melted shaped welded and solidified when cooled
- 7. • Aplications: •For example Polycarbonate: -compact discs -food storage containers -drinking bottles -eyeglass lenses Polyethylene -shampoo bottles -plastic grocery bags
- 8. Elastomers • Characteristics: • They have high elongation flexibility breaking against • Clasified into: • Thermoset Elastomers- not melt when heated. • Thermoplastic Elastomers- they melt when heated.
- 9. Elastomers part 2 • Properties: • Cannot melt, before it pass gaseous state • Swell in presence certain solvents • Are generally insoluble • Are flexible and elastic • Lower resistance than thermoplastic materials
- 10. Elastomers part 3 • Aplications: • It can be used for -Natural rubber; used to make shoe heels -Polybutadiene; used on the wheels -Neoprene; used to make wetsuits -Silicone; used to make medical prostheses, lubricants,etc
- 11. An example ofeach
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