Thermosensitive chromotropic material and manufacturing method and application thereof

Abstract

The invention provides a chromotropic material using material phase transition control chromotropic reaction for realizing irreversible thermosensitive discoloration, and a manufacturing method and anapplication thereof, which is characterized in that a temperature-sensitive function and a chromotropic function are separated and respectively born by two materials, and the functions of the two materials are coordinated through designing a solidified carrier material structure with a specific melting point, realizing low temperature irreversible thermosensitive discoloration, enlarging the optional range of chromotropic temperature and chromotropic modes, and satisfying the different demands of practical application. The concrete method comprises the following steps: dissolving one of reactants of a chromotropic reaction into a material with the specific melting point by using the solid-liquid phase transition process of the material, solidifying into powder or grains, and then mixing with the other reactant of the chromotropic reaction to manufacture the irreversible thermosensitive chromotropic material. The invention has the principle that when the temperature of the mixture increases to be above a solidification point, the material dissolved with the chromotropic reactant is melted, and the reactant is released to react with the other reactant through contact to generate products with different colors.

Description

technical field [0001] The invention relates to a material for realizing irreversible thermosensitive discoloration by controlling discoloration reaction through material phase change, its preparation method and application, and belongs to the field of thermosensitive discoloration intelligent materials and structures. Background technique [0002] Heat-sensitive color-changing materials are a type of intelligent material that can display different colors in response to temperature changes. They are widely used in industries, medical care, anti-counterfeiting, clothing, and daily decoration, such as manufacturing temperature-indicating paints, heat-sensitive color-changing inks, special color-changing paper, imaging Materials, color-changing clothing, color-changing toys, etc., have potential economic and social benefits. [0003] Thermochromic materials are divided into reversible thermochromic materials and irreversible thermochromic materials. There are three main catego...

AI Technical Summary

Problems solved by technology

These compounds can exhibit irreversible thermosensitive discoloration characteristics in the temperature range of -50°C to 70°C. The discoloration temperature depends on the chain length of the compound and the derivative group, but there are certain difficulties in the precise control of the discoloration temperature.

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