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प्रश्न
Distinguish between thermoplastic and thermosetting resins. ?
Distinguish between Thermoplastic and Thermosetting plastic.
फरक स्पष्ट करा
उत्तर
| THERMOPLASTIC | THERMOSETTING |
| 1.Formed by addition polymerization. | 1. Formed by condensation polymerization. |
| 2. Can be moulded and remoulded. | 2.Remoulding is not possible. |
|
3. They softens on heating because the linear chains can slip over each other very easily. |
3. They do not become soft on heating,because cross links retain the strength on heating. But prolonged heating causes charring. |
| 4. Soft, weak and less brittle. | 4. Hard, strong and brittle. |
| 5. Soluble in some organic solvents. | 5.lnsoluble in almost all organic solvents. |
| 6. Relatively low molecular weight. | 6.Relatively high molecular weight. |
| 7 Example: PVC, PE, Teflon. | 7.Example: UF, PF, Nylon 6-6, etc. |
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Thermoplastic Plastic
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