Thermoplastic vs Thermosetting Plastics
# | Thermoplastic / Thermosoftening plastics | Thermosetting plastics |
---|---|---|
1. | The plastics who possess linear long-chain structures without cross-linkages are called thermosoftening plastics. It is also called as thermoplastic. | The plastics that possess a three-dimensional complicated structure with cross-linkages are called thermosetting plastics. |
2. | They are formed by additional polymerization. | They are formed by condensation polymerization. |
3. | They consist of polymers of smaller molecular weight. | They consist of polymers of higher molecular weight. |
4. | They are softer, weaker & less brittle. | They are harder, stronger & more brittle. |
5. | They have low tensile strength. | They have high tensile strength. |
6. | Their intermolecular bonds are weak. | Their intermolecular bonds are strong covalent bonds. |
7. | They soften on heating. | They do not soften on heating. |
8. | They are soluble in an organic solvent. | They are insoluble in organic solvent. |
9. | They can be reshaped and reused. | They cannot be reshaped and reused. |
10. | They can be reclaimed from the waste. | They cannot be reclaimed from the waste. |
Examples: | ||
Thermoplastic: Polyethylene, Polypropylene, PVC. | ||
Thermosetting: Epoxy, Phenolic, Melamine. |