Stable thermally reversible discoloration core-shell polymer emulsion with hysteresis effect and preparation method thereof

A technology of polymer emulsion and hysteresis effect, applied in the field of emulsion polymerization, can solve the problems of loss of discoloration ability, poor reversibility and stability, application limitations, etc., and achieve broad application range, good thermal stability and storage stability, and raw material utilization high rate effect
CN107417856BActive Publication Date: 2020-01-14HUBEI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUBEI UNIV
Publication Date
2020-01-14

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Abstract

The invention discloses a stable thermally induced reversible color-changing core-shell type polymer emulsion with hysteresis effect and a preparation method thereof. The emulsion takes a mixture of an electron-donating developing organic compound (A), an electron-accepting compound (B) and a reaction medium (C) as a core, the (C) determines temperature at which color development reaction and hysteresis effect of the (A) and (B) occur, and a polymer of maleic anhydride, styrene and methyl methacrylate is taken as a shell, wherein the core is dispersed in the core-shell structure polymer water-based emulsion by virtue of an emulsifier, and a mass ratio of the (A) to the (B) to the (C) is 1:(1-20):(1-100). The preparation method comprises the step of sequentially synthesizing the core material, the emulsifier and the core-shell type polymer emulsion. The oil-in-water type emulsion disclosed by the invention is environment-friendly and stable in performance, has resistance to acid, alkali, salt and electrolyte solution, organic solvent resistance and reversible color-changing property and has delay with large temperature range on temperature sensitivity.
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Description

technical field

[0001] The invention relates to the technical field of emulsion polymerization, in particular to a stable thermally reversible discoloration core-shell polymer emulsion with hysteresis effect and a preparation method thereof. Background technique

[0002] Reversible thermochromism refers to the characteristic that one color changes to another color when heated, and returns to the original color after cooling. Reversible thermochromic material is a special functional material, which has the characteristic that one color changes to another color when heated, and returns to the original color after cooling. This thermochromic material that changes with temperature has a wide range of uses, and is currently mainly used in aerospace, information processing, automotive industry, architectural coatings industry, textiles and clothing, and daily necessities, such as food preservation and refrigeration temperature indication, anti-counterfeiting Signage, imaging mate...

Claims

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