| Popis: |
Polytetrafluoroethylene (PTFE) is an ideal coating material with superior chemical resistance, lubrication, and hydrophobicity. Multimaterial manufacturing with metal and PTFE is desirable for their complementary strengths, but non-robust bonding at the interface remains a significant challenge for durability. Here, we devise a strategy combining iron catalyst deposition and thermostatic control on a high-power laser to directly bond steel and pure PTFE. As a result, we achieve unprecedented peel strength surpassing 3.5 N/mm and stable chemical bond formation between the two materials. Furthermore, manufacturing a 10-ton truck's loading box with steel-PTFE composites proves the ultra-durable lubrication effect that enables zero load waste and 10.7 % CO2 reduction during repetitive soil transportation. Our novel method to control polymer decomposition at the metal-polymer interface should facilitate multimaterial manufacturing with superior mechanochemical durability. |
