The color change principle and structure of reversible thermochromic pigments

The color change principle and structure of reversible thermochromic pigments:

Thermochromic pigment is a kind of microcapsules that change color repeatedly with temperature rise or fall.

The reversible thermochromic pigment is prepared from an electron transfer type organic compound system. Electron transfer type organic compound is a kind of organic coloring system with special chemical structure. The molecular structure of the organic substance changes due to electron transfer at a specific temperature, thereby realizing a color transition. This color-changing substance is not only bright in color, but also can realize the color change from the state of "colored === colorless" and "colorless === colored". It is a heavy metal complex salt complex type and liquid crystal type reversible thermochromic What the substance does not have. Pearlescent pigments, color changing pigments, fluorescent pigments

The microencapsulated reversible thermochromic substance is called reversible thermochromic pigment (commonly known as: thermochromic pigment, thermopowder or thermochromic powder). The particles of this pigment are spherical, with an average diameter of 2 to 7 microns (one micron is equal to one thousandth of a millimeter). The inside is a discoloration substance, and the outside is a transparent shell about 0.2~0.5 microns thick that neither dissolves nor melts. It is it that protects the discoloration substance from the erosion of other chemical substances. Therefore, it is very important to avoid damaging this shell during use.