Hyperbranched polymer underwater adhesive based on polyfunctional rigid hydrophobic component as well as preparation method and application of hyperbranched polymer underwater adhesive
A hyperbranched polymer, multifunctional technology, used in adhesives, carboxylic acid halide preparation, organic chemistry, etc., can solve the problems of long curing time, inability to use underwater for a long time, etc., to improve adhesion performance, excellent water The effect of low adhesion performance and simple and easy preparation process
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[0064] The preparation method of tetraacrylamide tetraphenylethylene is the same as above, except that melamine is replaced by tetra-(4-aminophenyl)ethylene. Gained tetraacrylamidetetraphenylethylene NMR spectrum is as follows figure 2 shown. The result proves that the tetraacrylamidetetraphenylethene of the present invention is successfully prepared.
[0065] Bisacrylylated Small Molecules The preparation method is as follows:
[0066]
[0067] (1) 2-Hydroxyethyl vinyl ether (26.4g, 0.3mol) and triethylamine (TEA) (33.3g, 0.33mol) were dissolved in 250mL of anhydrous dichloromethane (DCM), dropwise under ice bath Acryloyl chloride (30 g, 0.33 mol) was added, and then allowed to rise to room temperature to react overnight. The precipitate produced by the reaction was removed by filtration, and the filtrate was washed three times with anhydrous MgSO 4 After drying, removing the solvent and vacuum drying, the product VEA was obtained as a colorless liquid with a yield ...
Embodiment 1
[0076] A kind of hyperbranched polymer underwater adhesive based on multifunctional rigid hydrophobic component, its preparation method comprises the following steps:
[0077] (1) Weigh 3.304g octaacrylate cage silsesquioxane, 3.08g polyethylene glycol diacrylate (average molecular weight 308), 4.335g dopamine hydrochloride, put them into a 250mL round bottom flask, and use 50mL dimethyl The sulfoxide was dissolved and stirred until clear, then 4.5 mL of triethylamine was added to adjust the pH of the solution to 8.0.
[0078] (2) The solution was placed in an oil bath at 40° C. and stirred for 3 h in the dark.
[0079] (3) After the reaction finishes, the triethylamine hydrochloride generated in the reaction process is removed by suction filtration to obtain a transparent solution V 0 mL, then purify the clear solution three times using five times methyl tert-butyl ether: the first time measure 5V 0 Place mL of methyl tert-butyl ether in a conical flask, stir with a magnet...
Embodiment 2
[0082]A kind of hyperbranched polymer underwater adhesive based on multifunctional rigid hydrophobic component, its preparation method comprises the following steps:
[0083] (1) Weigh 0.3304g octaacrylate cage silsesquioxane, 0.198g 1,4-butanediol diacrylate, 0.3793g dopamine hydrochloride, put them into a 50mL round-bottomed flask, add 5mL dimethylsulfoxide Dissolve and stir until clear, then add 400 μL of triethylamine to adjust the pH of the solution to 8.0.
[0084] (2) The solution was placed in an oil bath at 80° C. and stirred for 1 h in the dark.
[0085] (3) After the reaction finishes, the triethylamine hydrochloride generated in the reaction process is removed by suction filtration to obtain a transparent solution V 0 mL, the first use of five times methyl tert-butyl ether (5V 0 mL) purified transparent solution: measure 5V 0 Place mL of methyl tert-butyl ether in a conical flask, stir with a magnet at the bottom, add the transparent solution drop by drop into...
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