TEMPERATURE SENSOR USING TEMPERATURE-SENSITIVE CHROMOGENIC MATERIAL AND METHOD FOR USING THE SAME

• Main Authors: OKAMURA TOSHIHIRO, OBATA NOBUMITSU
• Format: Patent
• Language: English; Japanese
• Published: 06.09.2022
• Subjects: MEASURING; MEASURING QUANTITY OF HEAT; MEASURING TEMPERATURE; PHYSICS; TESTING; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR

To provide a temperature-sensitive chromogenic material that presents colors irreversibly in a low-temperature region, a temperature sensor using the material, and a method for using the sensor.SOLUTION: The temperature-sensitive chromogenic material includes: a first component (A) containing a leuco dye (a1) and a temperature adjusting agent (a2); and a second component (B) containing a solid adsorbent (b1). When the temperature of the first component (A) increases from a temperature lower than the melting point of the temperature adjusting agent (a2) to the melting point, the temperature adjusting agent (a2) melts, and the leuco dye (a1) reacts with the solid adsorbent (b1) and presents a color.SELECTED DRAWING: Figure 1 【課題】低温領域で不可逆的に発色する感温発色性材料、並びにそれを用いた温度センサー及びその使用方法を提供する。【解決手段】本発明に係る感温発色性材料は、ロイコ染料（ａ１）と温度調整剤（ａ２）とを含む第一の成分（Ａ）と、固体吸着剤（ｂ１）を含む第二の成分（Ｂ）とを有し、前記第一の成分（Ａ）の温度が前記温度調整剤（ａ２）の融点より低い温度から前記融点まで上昇したとき、前記温度調整剤（ａ２）が融解して、前記ロイコ染料（ａ１）が前記固体吸着剤（ｂ１）と反応して発色する。【選択図】図１