Hydrophobic resin adhesive, preparation method and application thereof
A technology of hydrophobic resin and adhesive, applied in the field of stomatology materials, can solve the problems of unsatisfactory bonding interface quality, decreased bonding strength, micro-leakage at the edge of the restoration, etc.
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Embodiment 1
[0021] Accurately weigh 5.55 g of isophorone diisocyanate and add it to 20 g of polyether diol, add 0.1 g of dibutyl tin dilaurate, and react with mechanical stirring at 68°C. After 3 hours, 3g of hydroxyethyl methacrylate was added, and the reaction was continued for 3 hours to obtain the required polyurethane dimethacrylate of the present embodiment;
[0022] Accurately weigh 7.77 g of isophorone diisocyanate and 0.2 g of dibutyltin dilaurate into a 150 mL three-neck flask, and stir mechanically under the condition of oil bath temperature control at 75°C. Then, 9 g of polyether triol 900 was added dropwise, and the reaction was continued for 6 hours. After observing the absence of hydroxyl groups through infrared spectroscopy, the isocyanate group-terminated polyether triol required in this example can be obtained;
[0023] Accurately weigh 5g of polyurethane dimethacrylate and 0.9g of isocyanate group-terminated polyether triol, add 1.5g of methyl methacrylate, 2.5g of but...
Embodiment 2
[0028] Accurately weigh 5.55 g of isophorone diisocyanate and add it to 20 g of polyether diol, add 0.1 g of dibutyl tin dilaurate, and react with mechanical stirring at 68°C. After 3 hours, 3g of hydroxyethyl methacrylate was added, and the reaction was continued for 3 hours to obtain the required polyurethane dimethacrylate in this example;
[0029] Accurately weigh 7.77 g of isophorone diisocyanate and 0.2 g of dibutyltin dilaurate into a 150 mL three-neck flask, and stir mechanically under the condition of oil bath temperature control at 75°C. Then, 9 g of polyether triol 900 was added dropwise, and the reaction was continued for 6 hours. After observing the absence of hydroxyl groups through infrared spectroscopy, the isocyanate group-terminated polyether triol required in this example can be obtained;
[0030] Accurately weigh 6 g of polyurethane dimethacrylate and 0.9 g of isocyanate group-terminated polyether triol, add 1 g of methyl methacrylate, 2 g of butyl acrylat...
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