Whether the plastic material can be re-shaped after heating is divided into thermoplastic and thermosetting plastic.
The main difference between:
Thermoplastic plastic can be repeatedly formed by heating and softening but on the contrary.
Thermosetting plastic is heated and shaped for the first time. Once cooled and fixed, it cannot be changed again by heating.
What is thermoplastic?
Thermoplastic Plastic: It is made of linear molecules as aggregates. The molecules can move more freely at high temperatures, and those that soften when heated are called thermoplastic plastics.
Thermoplastics can be formed into a deformable state by heating, and after the temperature is cooled, the material itself can maintain the shape it was shaped into when heated. This plastic material can be repeatedly heated and reused and sold in pellet form.
Commonly used thermoplastics:
Molding method: injection molding, extrusion molding, blow molding
What is a thermoset plastic?
Thermosetting Plastic: The mesh plastic formed by the bridging reaction is called thermosetting plastic.
Thermosets cannot be re-melted and reused after hardening because the internal structure of the material will deteriorate or decompose. Therefore, the thermosetting plastic must be formed before the network structure is formed. Thermosetting plastics are superior to thermoplastics in terms of mechanical properties, heat and pressure resistance, and corrosion resistance. Sold in powder or granular form.
Commonly used thermosetting plastics: