Variable thermal conductivity material, thermal control device using the variable thermal conductivity material, and thermal control method using the variable thermal conductivity material

摘要

PROBLEM TO BE SOLVED: To provide a thermal conductivity variable material for achieving a heat control device having simple and compact constitution without need for setting a cooling device aside from a thermal insulant.SOLUTION: There is provided a thermal conductivity variable material 2 of which thermal conductivity is changed at predetermined temperature or more. There is provided a thermal conductivity variable material 2 which is a material of which thermal conductivity is increased because the thickness becomes smaller at predetermined temperature or more and of which thickness becomes small at predetermined temperature or more and recovers at less than predetermined temperature. For example there is provided a thermal conductivity variable material 2 using a thermal reactive polymer such as a liquid crystal polyurethane elastomer. There is provided a thermal conductivity variable material 2 which is a material of which thickness becomes smaller because property of orientation is changed at predetermined temperature or more and has cavities inside.SELECTED DRAWING: Figure 1