Acrylate-based polydiacetylene thermochromic material and its preparation method and application
A thermochromic material, acrylate-based technology, applied in the direction of additive processing, etc., can solve the problems of secondary pollution, adverse effects on material properties, etc.
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[0019] The invention provides a method for preparing an acrylate-based polydiacetylene thermochromic material, the preparation method comprising:
[0020] (1) In a light-proof environment, the photoinitiator Irgacure 369, trimethylolpropane triacrylate and 10,12-pentacosadiynoic acid are mixed to obtain an emulsion;
[0021] (2) sequentially irradiating the emulsion with LED light and ultraviolet light to obtain an acrylate-based polydiacetylene thermochromic material.
[0022] In a preferred embodiment of the present invention, in order to improve material performance and response sensitivity, photoinitiator Irgacure 369 and trimethylolpropane triacrylate are mixed for the first time to obtain a colorless liquid. In the light environment, 10,12-pentacosadiynoic acid was added, and an emulsion was obtained after the second mixing.
[0023] In a preferred embodiment of the present invention, in order to improve material performance and response sensitivity, relative to 2g of t...
Embodiment 1
[0036] First mix the photoinitiator Irgacure 369 and trimethylolpropane triacrylate (using mechanical stirring, the stirring time is 3min) to obtain a colorless liquid, then add 10,12- Pentacosadiynoic acid, mixed for the second time (including ultrasonic dispersion for 5 minutes, followed by mechanical stirring for 5 minutes.) to obtain emulsion; sequentially use 405nm LED light (irradiation 2min, light intensity is 110mW / cm 2 ) and 254nm ultraviolet light irradiation (irradiation 5min, light intensity is 15W / cm 2 ) above-mentioned emulsion, obtains acrylate-based polydiacetylene thermochromic material; Relative to the trimethylolpropane trimethacrylate of 2g, the consumption of photoinitiator Irgacure 369 is 1mg, 10,12-pentacoke The dosage of diynoic acid is 0.1 g. The structure diagram of raw material photoinitiator Irgacure 369, trimethylolpropane triacrylate (TMPTA) and 10,12-pentacosadiynoic acid (PCDA) is as follows figure 1 As shown, the three arms of TMPTA contain a...
Embodiment 2
[0038] First mix the photoinitiator Irgacure 369 and trimethylolpropane triacrylate (using mechanical stirring, the stirring time is 2min) to obtain a colorless liquid, then add 10,12- Pentacosadiynoic acid, mixed for the second time (including ultrasonic dispersion for 4min, followed by mechanical stirring for 4min.) to obtain emulsion; sequentially use 405nmLED light (irradiation 1.5min, light intensity is 105mW / cm 2 ) and 254nm ultraviolet light irradiation (irradiation 4min, light intensity is 10W / cm 2 ) above-mentioned emulsion, obtains acrylate-based polydiacetylene thermochromic material; Relative to the trimethylolpropane trimethacrylate of 2g, the consumption of photoinitiator Irgacure 369 is 2mg, 10,12-pentacactyl The dosage of diynoic acid is 0.2 g.
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