Thermosetting plastics (thermosets) refer to a variety of polymer materials that cure, through the addition of energy, to a stronger form.
Thermoset materials are usually liquid, powder, or malleable prior to curing, and designed to be molded into their final form, or used as adhesives.
The curing process transforms the resin into a plastic or rubber by cross-linking. Energy and catalysts are added that cause the molecular chains to link into a rigid, 3-D structure.
Thermoset materials are generally stronger than thermoplastic materials, and are also better suited to high-temperature applications. They do not lend themselves to recycling like thermoplastics, which can be melted and re-molded.
Examples
Natural Rubber
Bakelite, a Phenol Formaldehyde Resin (used in electrical insulators and plastic wear)
Duroplast
Urea-Formaldehyde Foam (used in plywood, particleboard and medium-density fibreboard)
Melamine (used on worktop surfaces)
Polyester Resin (used in glass-reinforced plastics/Fibreglass (GRP))
Epoxy Resin (used as an adhesive and in fibre reinforced plastics such as glass reinforced plastic and graphite-reinforced plastic)
Note that this is how you would calculate ENC - Although the nucleus gets MORE positive down the PT, the ENC actually decreases! Not just the compensation part, but actually in it's entirety.
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