Preparation process of thermosensitive color-changing pencil lead

Abstract

The invention discloses a preparation process of a thermosensitive color-changing lead core. The preparation process is mainly prepared from the following raw materials: thermosensitive color-changing color paste, clay, a filler, an adhesive, deionized water, paraffin, stearic acid, palm wax, an emulsifier and p-methyldiacetate, and the material is simple in structure and novel in design, and has the characteristics of color display at normal temperature, when the pencil lead is heated to a certain temperature, the color disappears completely, the pencil lead is still colorless when the temperature returns to the normal temperature from the high temperature, the color returns to the original colored state when the temperature continues to be reduced to the critical temperature (color developing temperature), and meanwhile the pencil lead has the advantages of being smooth in writing, easy to color and not prone to breakage.

Description

technical field

[0001] The invention relates to the technical field of heat-sensitive color-changing lead cores, in particular to a preparation process for heat-sensitive color-changing lead cores. Background technique

[0002] Thermochromic materials are functional materials whose color changes significantly with temperature within a certain temperature range. As early as more than a hundred years ago, people discovered the phenomenon of thermal discoloration. The comprehensive research and application of thermochromic materials has a history of 60 to 70 years, and it has a history of more than 30 years in our country. After decades of research and development, people have developed various materials with thermochromic properties such as inorganic, organic, liquid crystal, polymer and biological macromolecules, and low-temperature thermosensitive color-changing pigments suitable for inks.

[0003] Thermochromic materials are basically irreversible thermochromic materials ...

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