Ci-Dell Plastics
Manufacturing Quality Molded Parts Since 1986


What is a Thermoset Material?

A thermoset material is made of polymer resins that are cured through a heat and chemical cross linking process. This curing process transforms the resin into its final form and once the crosslinking has taken place, the material cannot be melted or re-shaped. Thermoset materials are generally stronger than thermoplastic materials and are better suited to high temperature and high strength applications. Some examples of thermoset materials are: 

  • Polyester fiberglass systems such as sheet molding and bulk molding compounds
  • Phenolic
  • Melamine
  • Epoxy
  • Urea
  • Melamine/phenolicdiallyl ortho phthalate

Why Choose a Thermoset Material?

Thermoset composite materials are an ideal choice when choosing a material for a product that needs the following property values.

  • Dimensional stability
  • High heat resistance
  • Electrical insulation
  • High flex strength
  • Thermal insulation
  • Corrosion resistance
  • Creep resistance
  • Low fluid absorption

What are Applications of Thermoset Material?

Typical applications for these materials are:

  • Electrical enclosures, toggle bars, levers, switch bases, spacers, slip rings
  • Automotive caps and housings
  • Shower and bath fixtures
  • Small and large appliance handles, control panels, side and end panels
  • Outdoor grill shelves and control knobs
  • Lighting luminaires, bases and covers

Thermoset materials are an excellent candidate for products being considered for metal replacement.