What is Thermosetting Plastic?

Thermosetting Plastic, also known as thermoset, is a type of polymer that undergoes irreversible chemical changes when heated. This property of thermosetting plastic leads to the formation of a three-dimensional network structure.

Unlike thermoplastics, which soften when heated and can be reshaped, thermosetting plastics undergo a process called curing, during which polymer chains cross-link to form a rigid and durable material.

Examples of Thermosetting Plastic

Common examples of thermosetting plastics include:

• Epoxy Resin: Epoxy resins are versatile thermosetting polymers known for their exceptional adhesive properties, high chemical resistance, and mechanical strength.

• Phenolic Resin: Phenolic resins, derived from phenol and formaldehyde, are renowned for their excellent heat resistance, electrical insulation, and flame-retardant properties.

• Polyester Resin: Polyester resins, produced by the reaction between unsaturated dibasic acids and diols, exhibit high strength, corrosion resistance, and dimensional stability.

Other than these there are some more examples of thermosetting plastic such as Polyurethane Resin, Silicone Resin, Melamine Resin, Vulcanized Rubber, Bakelite, etc.

Physical and Chemical Properties of Thermoplastic

• Thermosetting plastics have high melting points
• Thermosetting plastics are generally rigid and strong
• Thermosetting plastics are also highly resistant to heat, chemicals 

Thermoplastic And Thermosetting Plastic are two different types of plastics which differ fundamentally in their molecular structure, behaviour under heat, and ability to undergo chemical changes.

While both plastics offer distinct advantages and applications, their unique properties cater to different needs across industries. In this article, we will discuss Thermoplastic and Thermosetting Plastic including the key differences between them as well.