Ultra-high-molecular-weight polyethylene
（重定向自UHMWPE）
![Structure of UHMWPE, with n greater than 100,000](/Images/godic/202502/18/Polyethylene_repeat_unit.svg4656.png")
Ultra-high-molecular-weight polyethylene (UHMWPE, UHMW) is a subset of the thermoplastic polyethylene. Also known as high-modulus polyethylene, (HMPE), or high-performance polyethylene (HPPE), it has extremely long chains, with a molecular mass usually between 2 and 6 million amu. The longer chain serves to transfer load more effectively to the polymer backbone by strengthening intermolecular interactions. This results in a very tough material, with the highest impact strength of any thermoplastic presently made.