0 Thermosetting substances can be melted and formed into shapes that become hard and cannot be melted again. --
Cross-links are the characteristic property of thermosetting plastic materials.
Perhaps the most important was melamine, an extraordinarily strong and durable thermosetting plastic material.
In thermoset polymers (thermosetting plastic), disulfide bridges and other covalent cross links give rise to a hard structure which can withstand very high temperatures.
One example of this is an engine with a thermosetting plastic base.
In most cases, cross-linking is irreversible, and the resulting thermosetting material will degrade or burn if heated, without melting.
Another key point is that a premeasured amount of thermosetting plastic in powder, preform, and even granular form can be placed into the heating chamber.
As a rule, polysilazane solids behave as thermosetting polymers, but in some cases, thermoplastic processing is possible.
The plastic may be a thermosetting plastic- most often epoxy, polyester- or vinylester or a thermoplastic.
