Thermochromic pigments are functional coating materials that change color through temperature variations. The principle is based on the molecular structure changes of electron transfer-type organic compounds. The reversible type achieves a color cycle transformation at a specific temperature threshold, while the irreversible type undergoes permanent changes in high-temperature environments. It is usually used in industrial manufacturing, such as: thermosensitive water cups, coasters; Cultural and creative products, such as figurines and models, etc.
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