A kind of bio-based photocurable biomimetic adhesive and preparation method thereof
A bionic adhesive and light-curing technology, applied in adhesive types, oil/grease/wax adhesives, adhesives, etc., can solve the problems of slow curing speed and long curing time, and achieve the effect of fast bonding
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[0022] see figure 1 , based on the same inventive concept, the present application also provides a preparation method of bio-based photocurable biomimetic adhesive, comprising the following steps:
[0023] Step 1: Add a catechol-containing compound, a solvent, a catalyst and a co-catalyst into a reaction kettle, and stir and react at room temperature for 10-30 minutes to obtain a first solution.
[0024] Step 2, adding epoxy soybean oil acrylate to the first solution, stirring and reacting at 25°C-60°C for 10-24 hours to obtain the second solution.
[0025] Step 3, cooling the second solution to room temperature and then filtering, washing the filtrate repeatedly with water, drying the organic phase, and then rotary evaporating to remove the solvent to obtain the biomimetic adhesive.
[0026] Specifically, the addition amount of the catalyst is 1.2-2 times of the hydroxyl content (molar content) in the epoxy soybean oil acrylate.
[0027] Specifically, the addition amount of...
Embodiment 1
[0040] Add 10.9 g of 3,4-dihydroxyphenylpropionic acid, 12.4 g of dicyclohexylcarbodiimide, 0.6 g of 4-dimethylaminopyridine and 30 mL of tetrahydrofuran into the reaction flask, and stir at room temperature for 10 min.
[0041] Under the protection of argon, 12 g of epoxy soybean oil acrylate was added, and the mixture was stirred and reacted at 40° C. for 10 h.
[0042] The system was cooled to room temperature and filtered, the filtrate was washed with water three times, anhydrous magnesium sulfate was added to the organic phase to dry, and the solvent was removed by rotary evaporation to obtain 20.3 g of biomimetic adhesive.
Embodiment 2
[0044] Add 12.6 g of 3,4-dihydroxyphenylacetic acid, 15.5 g of dicyclohexylcarbodiimide, 1.0 g of 4-dimethylaminopyridine and 30 mL of tetrahydrofuran into the reaction flask, and stir at room temperature for 20 min.
[0045] Under the protection of argon, 12 g of epoxy soybean oil acrylate was added, and the mixture was stirred and reacted at 60° C. for 16 h.
[0046] The system was cooled to room temperature and filtered, the filtrate was washed with water three times, anhydrous magnesium sulfate was added to the organic phase to dry, and the solvent was removed by rotary evaporation to obtain 19.1 g of biomimetic adhesive.
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