The basic difference between thermoplastic and thermosetting plastic depends on the behavior of the material at elevated temperatures.
Thermoplastic materials melt at elevated temperature and can be reformed into a new shape. While thermosetting plastic material melts during the first heating to form a permanent set and after that, it cannot melt and reform.
Difference between thermoplastic and thermosetting plastic:
|It can be reshaped again and again.
|This plastic can not be reshaped.
|Thermoplastics can melt again and again. It has low melting point.
|It can’t melt after it permanently gets set.
|Thermoplastics are flexible.
|Thermosetting plastic are brittle.
|Thermoplastics have lower tensile strength.
|It has higher tensile strength.
|Thermoplastics are softer.
|This plastic material is harder.
|Thermoplastic products have higher surface finish.
|It is difficult to obtain a surface finish in the case of thermosetting plastic.
|The plasticity increases with an increase in temperature.
|Plasticity does not change with a change in temperature.
|It is formed by addition polymerization.
|It is formed by condensation polymerization.
|There is no chemical change in thermoplastics while heating.
|Thermosetting plastic undergoes chemical change while first heating to form a permanent set.
|Thermoplastics are used in injection molding, blow molding.
|Thermosetting plastics are used in compression molding.
|It cannot be used for fireproof applications.
|It can be used for fireproof applications.
|Thermoplastics can be recycled.
|It cannot be recycled.
|Examples: Polyvinyl chloride, Nylon.