Structural color material for photosensitive three-dimensional printing and preparation method thereof
A technology of three-dimensional printing and structural color, applied in the field of printing, can solve problems such as clogged nozzles and easy agglomeration of pigments, and achieve the effects of reducing internal stress, low volatility, and broad market prospects
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[0034] Example 1
[0035] Preparation of hyperbranched polyurethane acrylic resin:
[0036] In a four-necked flask equipped with a thermometer, reflux condenser, and stirrer, pass nitrogen to exclude air, add 10g isophorone diisocyanate and 0.07g catalyst stannous octoate at 50℃, mix well, and heat up to 90℃ , Add 1g of dimethylolpropionic acid, 0.3g of trimethylolpropane and 10g of polyether glycol tetrahydrofuran mixture dropwise according to the meter, and react at 90℃ for 4 hours; after cooling to 50℃, use di-n-butylamine method Titrate the reactant, monitor the -NCO value of the reactant until it reaches the theoretical value, weigh 1.2g of hydroxyethyl methacrylate into the tetrahydrofuran solution, raise the temperature to dissolve it, and add it dropwise to the four-neck flask In the medium, the reaction is maintained at 50°C for 3 to 4 hours, and finally the tetrahydrofuran in the reactant is evaporated to obtain a hyperbranched polyurethane acrylic resin.
[0037] Prepara...
Example Embodiment
[0042] Example 2
[0043] Preparation of structural color materials for photosensitive three-dimensional printing:
[0044] Combine 30 parts of hyperbranched polyurethane acrylic resin, 10 parts of 1,6-hexanediol diacrylate, 20 parts of alkoxylated pentapentyl alcohol tetraacrylate and 15 parts of propoxylated neopentyl glycol diacrylate in three parts Mix well in the flask, then add 2 parts of Irgacure 1173, 2 parts of Darocur ITX, 1 part of Polyol0301, 2 parts of benzyl alcohol, 1 part of Twin4000, 0.5 part of tripropylene glycol monomethyl ether, 0.5 part of Disperbyk168 and stir well; the particle size is 230 nm 6 parts of monodisperse nanoparticle polystyrene (monodispersity is 0.01) and 10 parts of ethylene glycol are mixed in a beaker, so that the polystyrene particles are fully wetted and dispersed uniformly; pour the polystyrene nanoparticle components into three mouths Bottle, stir well and set aside.
[0045] Printing of color originals:
[0046] First use the CAD system ...
Example Embodiment
[0048] Example 3
[0049] Preparation of structural color materials for photosensitive three-dimensional printing:
[0050] Combine 35 parts of hyperbranched polyurethane acrylic resin, 10 parts of ethoxylated oxyphenyl acrylate, 5 parts of tripropylene glycol diacrylate, 5 parts of triethoxylated trimethylolpropane triacrylate, and 10 parts of triethylene glycol diacrylate. Vinyl ether, 7 parts of 3,4 epoxyhexyl carboxylic acid-3',4'-epoxycyclohexyl methyl ester and 13 parts of bis(3-ethyl-3-oxetanyl) methyl ether Mix well in a three-necked flask, then add 2 parts Irgacure 184, 1 part benzophenone, 2 parts triarylsulfonium hexafluoroantimonate, 1 part Polyol0301, 2 parts 3,4-methylenedioxybenzyl alcohol , 1 part of Twin4000, 1 part of tripropylene glycol monomethyl ether, 1 part of Disperbyk168, 1 part of Byk307 and stir evenly; 8 parts of monodisperse nanoparticle poly(styrene-methacrylate-methacrylic acid) with a particle size of 280 nm ( The monodispersity is 0.03) and 8 part...
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