TEMPERATURE DETECTION MATERIAL, TEMPERATURE DETECTION INK USING SAME, TEMPERATURE INDICATOR, AND ARTICLE MANAGEMENT SYSTEM
申请人:HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD.
公开号:EP3614113A1
公开(公告)日:2020-02-26
A temperature detecting material comprises a first material containing a first temperature indicating material (temperature indicating material A) and a second material containing a second temperature indicating material (for example, temperature indicating material B), wherein the first temperature indicating material and the second temperature indicating material contain a leuco dye, a color developing agent, and a decoloring agent, and have a hysteresis characteristic in their color density-temperature curves, wherein the first temperature indicating material has a color developing temperature (Ta1 (Ta1A)) in a temperature increase process lower than a decoloring temperature (Td1 (Td1A)) in the temperature increase process, and turns to a non-crystalline state and is kept in a decoloring state when cooled down below the color developing temperature (Ta1) in the temperature increase process with a predetermined cooling speed or more after melting, wherein the second temperature indicating material, a color developing temperature (Ta2 (Ta2B)) is lower than a decoloring temperature (Td2 (Td2B)) in the temperature increase process, and wherein the color developing temperature (Ta1) in the temperature increase process is lower than the decoloring temperature (Td2) in the temperature increase process and the color developing temperature (Ta2) is lower than the color developing temperature (Ta1) in the temperature increase process.
一种温度检测材料包括含有第一种温度指示材料(温度指示材料 A)的第一种材料和含有第二种温度指示材料(例如温度指示材料 B)的第二种材料,其中第一种温度指示材料和第二种温度指示材料含有一种白兰地染料、其中第一温度指示材料和第二温度指示材料含有一种白光染料、一种显色剂和一种脱色剂,它们的色密度-温度曲线具有滞后特性,其中第一温度指示材料在升温过程中的显色温度(Ta1 (Ta1A))低于升温过程中的脱色温度(Td1 (Td1A))、并在熔化后以预定的冷却速度冷却到升温过程中的显色温度 (Ta1) 以下时变成非结晶状态并保持脱色状态,其中第二温度指示材料的显色温度 (Ta2 (Ta2B)) 低于升温过程中的脱色温度 (Td2 (Td2B))、其中温度升高过程中的显色温度 (Ta1) 低于温度升高过程中的脱色温度 (Td2),显色温度 (Ta2) 低于温度升高过程中的显色温度 (Ta1)。