explain Dharma plastics and thermosetting plastics with examples
Answers
AHOY!!
basically plastics are categorized in two different types. first is thermoplastic and second is thermosetting plastic.
thermoplastic - these plastics are soft and flexible plastic and they melt on heating. in simple sentence, they can be remoulded. i.e they are malleable (can be beaten into thin sheets) and ductile (can be beaten into thin wires) for example - polythene, cellulose etc.
thermosetting plastic - these plastics are hard and stiff and do not melt on heating. means thermosetting plastics can't be remoulded. they are malleable at very high temperatures. and we have many advantages of it. that's why cooking utensil handles and switch boards are made up of thermosetting plastic so they won't melt. examples - bakelite, PVC etc.
HOPE THIS HELPS!!
Answer:
Thermoplastics are defined as polymers that can be melted and recast almost indefinitely. They are molten when heated and harden upon cooling. When frozen, however, a thermoplastic becomes glass-like and subject to fracture.
A thermosetting polymer, resin, or plastic, often called a thermoset, is a polymer that is irreversibly hardened by curing from a soft solid or viscous liquid pre-polymer or resin. Curing is induced by heat or suitable radiation and may be promoted by high pressure, or mixing with a catalyst.