What is a TPU phone case?

What is a TPU phone case?


TPU (thermoplastic polyurethanes) is a kind of polymer material between rubber and plastic. It is a "new" environmental protection material. It has a wide range of applications, including automotive, electronic and electrical, construction, medical and other fields.


TPU is a (AB) n-type block linear polymer. A is polyester or polyether with high molecular weight (1000-6000), B is diol containing 2-12 linear carbon atoms, and the chemical structure between ab segments is diisocyanate, usually MDI.


Thermoplastic polyurethane rubber is crosslinked by intermolecular hydrogen bond or slight crosslinking between macromolecular chains. The two crosslinking structures are reversible with the increase or decrease of temperature. In the molten state or solution state, the intermolecular force decreases, and after cooling or solvent volatilization, there is a strong intermolecular force connected together to restore the properties of the original solid.


A TPU material phone case has the following advantages:

  1. Wear resistance, fall resistance, and super convenient loading and unloading;
  2. Comfortable feel, very comfortable to touch;
  3. With bright color.You can print all kinds of patterns you like;
  4. Appropriate soft hardness can protect the mobile phone in an all-round way;


Of course, it also has its limitations. TPU mobile phones are generally thicker.