Hydrophobic adhesive high in adhesive property and preparation technology thereof
A preparation process and adhesive technology, which is applied in the field of hydrophobic adhesives and their preparation, can solve the problems of poor thermal stability of adhesives, achieve the effect of enhancing bonding performance and solving poor thermal stability
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Embodiment 1
[0028] The concrete preparation process of benzoyl chloride-based polyborate is as follows:
[0029]Step 1: Add 1.54kg of 3,5-dihydroxybenzoic acid into absolute ethanol, stir and dissolve, heat up to 70°C and reflux, then add 0.62kg of boric acid and 0.071kg of ferric chloride into the reaction vessel, and react at constant temperature for 4 hours to obtain The product is washed with deionized water, saturated sodium chloride, acetone and dried respectively to obtain polyphenylboronic acid ester;
[0030] Step 2: Add 1kg of the polyphenylboronate prepared in step 1 into 18LN,N-dimethylformamide to fully dissolve and evenly, then raise the temperature to 80°C, add 2.1kg of thionyl chloride to it, and reflux for 5h. Then filter, wash and dry to obtain benzoyl chloride-based polyborate.
Embodiment 2
[0032] The concrete preparation process of benzoyl chloride-based polyborate is as follows:
[0033] Step 1: Add 1.54kg of 3,5-dihydroxybenzoic acid into absolute ethanol, stir and dissolve, heat up to 70°C and reflux, then add 0.62kg of boric acid and 0.078kg of ferric chloride into the reaction vessel, and react at constant temperature for 4 hours to obtain The product is washed with deionized water, saturated sodium chloride, acetone and dried respectively to obtain polyphenylboronic acid ester;
[0034] Step 2: Add 1kg of polyphenylboronate prepared in step 1 into 20LN,N-dimethylformamide to fully dissolve and evenly, then raise the temperature to 80°C, add 2.2kg of thionyl chloride to it, and reflux for 5h. Then filter, wash and dry to obtain benzoyl chloride-based polyborate.
Embodiment 3
[0036] A specific preparation process of a hydrophobic adhesive with high bonding performance is as follows:
[0037] In the first step, add 4.3kg of benzoyl chloride polyborate prepared in Example 1 and 10kg of dimethyl sulfoxide into the reaction flask, stir and dissolve, then heat up to 50°C, and then add 1.8kg of 3-aminopropyl Triethoxysilane, constant temperature reflux reaction for 6h, evaporated and crystallized, washed with ethanol, dried to obtain siloxanated polyborate;
[0038] In the second step, add the siloxanized polyborate prepared in the first step into 6kg of acetone, stir and dissolve at room temperature, then add 1.3kg of 3-aminobenzotrifluoride to it, mix well and then add 1.6kg of it dropwise kg of hexamethylene diisocyanate, stirring vigorously while adding dropwise, and reacting at a constant temperature for 1 hour after the dropwise addition is complete, to obtain a viscous colloid, which is dried at 60°C to obtain siloxane / fluorinated polyborate;
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