Photoexcitation-free temperature sensing material, preparation method and temperature sensing method

A preparation method for a photoexcitation-free temperature sensing material, comprising following steps:

• S1, selecting raw materials of compounds each containing one of element Sr, M, Zn, Tb, and Eu, weighing the raw materials according to a stoichiometric ratio of each of the element, adding a sintering flux Li2CO3, and thoroughly grinding to obtain a mixed raw material;
• wherein the stoichiometric ratio of the elements refers to the stoichiometric ratio of the elements in the general chemical formula of (SrxM1-x)1-y-zZnSO:Tby,Euz, 0≤x≤1, 0<y≤1, 0<z≤1, y+z≤1, and x, y, and z represent a molar percentage;
• S2, heating the mixed raw material to 800-1200° C. in an inert atmosphere or under vacuum, maintaining the temperature for 10-48 hours, cooling to room temperature, and grinding and crushing to obtain the photoexcitation-free temperature sensing material.

A temperature sensing method using a photoexcitation-free temperature sensing material with a general chemical formula of (SrxM1-x)1-y-zZnSO:Tby,Euz, wherein 0≤x≤1, 0<y≤1, 0<z≤1, and y+z≤1, x, y, and z represent a molar percentage;

• M represents a substitution ion of Sr and is one or two selected from Ca2+ and Ba2+;
• the photoexcitation-free temperature sensing material is applied with mechanical action to produce mechanoluminescence, and an ambient temperature is determined by measuring a ratio of a mechanoluminescence intensity in a waveband of 544 nm of the material to a mechanoluminescence intensity in a waveband of 625 nm of the material.