A kind of preparation method of photocurable resin integrating hydrogen bond and dynamic covalent bond
A dynamic covalent bond, light-curing resin technology, used in the field of polymer material preparation and 3D printing, can solve the problems of poor mechanical properties, material remodeling and mechanical strength can not be well combined, etc., to achieve a fast reaction rate , The effect of high product yield and mild conditions
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Embodiment 1
[0030] Formulate the components according to Example 1 in Table 1, stir glycidyl methacrylate, suberic acid and tetrabutylammonium bromide in an oil bath at 105°C for 3 hours until the reaction is complete, and obtain a homogeneously mixed acrylate resin. Wash the acrylate resin with distilled water for 3-5 times to remove TBAB, then freeze-dry it in a freeze dryer for 24 hours, and remove the distilled water. Then, TBD was added into the acrylate resin, and magnetically stirred at 90° C. for 30 minutes to mix evenly to prepare a uniform mixture. Then THFA was added to the mixture, and stirred at room temperature for 30 minutes to make the mixture uniform, acrylamide was added, and magnetically stirred at 70°C for 30 minutes to make the mixture uniform. After cooling to room temperature, the photoinitiator HMPP was added, and stirred at room temperature for 30 minutes to prepare a uniform prepolymer. Finally, the prepared prepolymer is vacuumed and cured by a UV mercury lamp...
Embodiment 2
[0032] At 105°C, formulate the components according to Example 2 in Table 1, stir allyl glycidyl ether, sebacic acid and tetrabutylammonium bromide in an oil bath at 117°C for 3h until the reaction is complete, and obtain Mix well with the acrylic resin. Wash the acrylate resin with distilled water for 3-5 times to remove TBAB, then freeze-dry it in a freeze dryer for 24 hours, remove the distilled water, then add anhydrous zinc acetate to the acrylate resin, and stir for 30 minutes to prepare a homogeneous mixture. Add ethoxylated tetrahydrofuran acrylate to the mixture, and stir at room temperature for 30 minutes to make the mixture uniform, add acrylamide, and magnetically stir at 90° C. for 30 minutes to make the mixture uniform. After cooling to room temperature, photoinitiator 184 was added and stirred at room temperature for 30 minutes to prepare a uniform prepolymer. Finally, the prepared prepolymer is vacuumed and cured by a UV mercury lamp for 2 minutes to obtain a ph...
Embodiment 3
[0034] Formulate the components according to Example 3 in Table 1, stir glycidyl methacrylate, octane glycol and tetrabutylammonium bromide in an oil bath at 60°C for 3 hours until the reaction is complete, and obtain a homogeneously mixed acrylate resin . Wash the acrylate resin 3-5 times with distilled water to remove TBAB, then freeze-dry it in a freeze dryer for 24 hours, remove the distilled water, then add triphenylphosphine to the acrylate resin, and stir magnetically at 85°C for 30 minutes to prepare homogeneous mixture. Tetrahydrofurfuryl methacrylate was then added to the mixture, and stirred at room temperature for 30 minutes to make the mixture uniform, acrylamide was added, and magnetically stirred at 90° C. for 30 minutes to make the mixture uniform. After cooling to room temperature, the photoinitiator TPO was added, and stirred at room temperature for 30 minutes to prepare a uniform prepolymer. Finally, the prepared prepolymer is vacuumed and cured by a UV me...
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