Instrument Panel Skin용 소재의 장기노화 특성연구

Environments around a vehicle give many aging-factors. Aging-factors consist of solar light, thermal effect, humidity, chemical pollutant and physical external forces etc.. Fundamentally, Heat and Light play important roles in Polymer Degradation. Heat-aging and Light-aging make most powerful effecs on the polymers that compose the Instument Panel Skin Materials. It is possible to analyze the effects of either Heat or Light for the Skin Materials and those in Outdoor Exposure Test. But We meet the block to find the relationship between Outdoor Exposure Test and Heat/Light-Aging directly. Indirectly, Long-term testing for both Outdoor Exposure and Heat/Light threw a little light on the understanding. Outdoor Exposure Test was executed at Arizona during over 100,000 Langleys. And Heat/Light-aging tests have being taken in lab-scale. Both Light-aging over 2500kJ/㎠ in Ci-4000 and Heat-aging around 1000hr at 120℃ were able to degrade the skins more severely than Outdoor Exposure with 100,000 Langleys.