| 초록 |
Recently, Ability and comfort of automotive car has greatly been improved by demanding consumers. In particular, the research of seat materials such as polyurethane foam pads is increasing. First of all, we defined the requirements for foam pads to provide comfort as riding and endurance comfort. The riding comfort required better vibration damping which cause pain in our bodies. The endurance comfort represents to provide a better wide (long) range performance and longer service life under any global environment. In this study, we developed novel ALL-MDI based polyurethane material system to replace traditional TDI based mixing system to enhancing riding and endurance comfort properties. Using various tests, results improving long range performance and vibration damping, as well as durability under temperature and humidity are presented. It is expected that the results if this study will help us to improve the in-car comfort of the occupant. |
