Reversible Smart Freezing Visualization Materials for Black Ice Indicator

초록

Thermochromic and hydrochromic (H) materials were selected to develop a self-sensitive mixture that visually illustrates black ice formation. A 200 mu m thick film was prepared to evaluate the thermochromic performance. The freezing visualization materials showed a rapid discoloration response time of 10 s. R0H, a 0 degrees C sensitive material combined with a weight ratio of red color and hydrochromic material (1:8), showed an excellent rating response of 19 seconds. As exposure to moisture increased, the color recovery rate was a maximum of 4.8 times slower than under dry freezing conditions. The color difference performance of the freezing visualization material was up to 31.18 with R0H (1:8) when dry freezing conditions were changed to moisture freezing conditions. When combined with moisture, and the moisture-freezing conditions were formed, the color of the frozen area was darker than the surrounding color and had high visibility. The samples had excellent temperature sensing performance and showed clear color conversion in response to moisture.

키워드