Why is this?
Thermoplastics are not cross-linked. The lack of a transverse linking means that if heat is introduced, for example, the linkings shift against one another. When temperatures increase, these materials change their shape accordingly easily – they 'flow'. Duroplastics, on the other hand, enjoy much denser cross-linking, as the individual strings are held together by transverse connections. Their shape remains intact even if a material reaches its boundary temperature. Moreover, the loss of mass is significantly smaller.
In summary, these are the benefits:
- High chemical resistance
- Lower thermal expansion coefficient
- Low setting behaviour
- Improved electrical properties (depending on the material composition)
- Lower heat conductivity
- More precise tolerances can be realised for components