THERMOSETTING POLYMERS

Thermosetting polymers undergo cross-linking reactions to become thermally stable and insoluble.

The three-dimensional structure created by cross-linking will not soften or melt. Instead, when it reaches a certain temperature, it will begin to decompose (break down).

With respect to their thermoplastic counterparts, thermosetting polymers are:

• more difficult and time-consuming to machine;
• generally stronger and less heat-sensitive;
• more difficult to recycle.

Top Glass uses mainly three thermosetting resin types: polyester, epoxy, and acrylic. WHAT ABOUT VINYL ESTER?

Polyester is a resin used to produce a broad range of relatively standard profiles. Epoxy resins are used to create products with high electrical insulation capacity and when carbon fiber reinforcement is used. Acrylic resins have low viscosity and thus accept additives to create products with good fire resistance properties.