I saw rubber-like silicones. Are there types of silicone that can be used in injection molding and once the process is finished - become as rigid as, let's say PVC? At the same time they should have all(/majority) of silicone's properties (citing Wikipedia):

  • Low thermal conductivity
  • Low chemical reactivity
  • Low toxicity
  • Thermal stability (constancy of properties over a wide temperature range of −100 to 250 °C)
  • Does not support microbiological growth
  • Resistance to oxygen, ozone, and ultraviolet (UV) light
  • High gas permeability

If such silicones exist - what are their names/formulas?

  • $\begingroup$ Homework. Hint: What generally limits the application temperature range of polymer types? $\endgroup$
    – Karl
    Oct 18, 2020 at 21:12
  • $\begingroup$ The answer is unlikely to be as simple as you might think. Most properties of material involving polymers are determined by the additives and means of production which allow a very wide range of possible properties. While, for example, PVC is usually a rigid, stiff material, with the right plasticisers it can be made into a flexible, soft tube. The same is probably true for silicones. $\endgroup$
    – matt_black
    Oct 19, 2020 at 11:57
  • $\begingroup$ If there are so many options - name at least/just one. I need something as rigid as a regular PVC pipe. $\endgroup$ Oct 19, 2020 at 14:00


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