There are plastic and silicone-based materials that could be used as shock absorbers, including Gainswave Treatment near Clover SC. With plastics you have more options and they are cheaper. Fatigue resistance also applies to impacts. Some plastic products can withstand individual shocks well, but fail if repeated, even at a lower energy level. My practical experience is that amorphous materials are more sensitive to impact fatigue than semicrystalline materials, as is the case with normal fatigue. Long-term impact tests should not be overlooked.
The best shock-absorbing phone cases have at least some rubber element in their construction. You may have thought that plastic would be the best option, but the problem with plastic is that it's brittle and not necessarily absorbs shocks. A plastic case will protect your phone up to a certain height, but it won't have the absorbent qualities of rubber. Likewise, silicone cases, which are very popular, are a thin and light option, but they don't offer much absorption capacity.
Silicone doesn't absorb moisture and provides good splash protection, making these covers an excellent choice for everyday use in a variety of environments. Silicone and plastic models are especially attractive, offering countless design options and making them an attractive option for a wide range of users. At elevated temperatures, it tends to be higher (to a certain extent), but when lowered, plastic products tend to become stiffer. TPU is a thermoplastic polyurethane, a type of material that combines the properties of thermoplastic polymers and the elasticity of elastomers. This means that, instead of your phone suffering most of the fall, the case absorbs it.
It is clear that a helmet or ski boot must have high impact resistance, but almost all plastic products suffer impacts at some point in their lifespan and the consequences are often irreversible. When it comes to the difference between plastic and silicone cases, it's important to consider the user's personal needs and preferences. I understand that the general purpose of the data is to help designers compare different plastic qualities, but in the case of impact resistance, I didn't find them useful.