Preparation method for water-based heat-conducting environmentally-friendly adhesive
An adhesive and environmentally friendly technology, applied in the direction of adhesives, adhesive additives, acidic copolymer adhesives, etc., can solve the problem of poor heat resistance, water resistance, poor wettability of non-polar substrates, and bonding effect Insufficient and other problems, to achieve the effect of good bonding effect, simple preparation method, flexible film
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Embodiment 1
[0024] (1) Dissolve equal amounts of 4,4'-diaminotriphenylamine and terephthalaldehyde in equal volumes of xylene, solvent toluene is stirred and heated to reflux under nitrogen protection, and added three times within 1 hour Continue to react terephthalaldehyde in 4,4'-diaminotriphenylamine at reflux temperature for 5 hours, cool the reaction solution to room temperature, precipitate the filtrate in methanol, filter with suction, and extract with methanol for 24 hours until the small molecules are removed. Soluble matter, vacuum-dried to obtain powdered poly-Schiff base, after adding deionized water, heated to make it completely dissolved, and obtained poly-Schiff base dispersion; (2) In the reaction kettle, take 35 parts of citric acid and add 2 parts Grind boron nitride nanosheets in a reaction kettle to make them evenly mixed, heat citric acid to a molten state, stir and react for 2 hours, while controlling the temperature of the reaction kettle to 170°C, continue to react ...
Embodiment 2
[0026] (1) Dissolve equal amounts of 4,4'-diaminotriphenylamine and terephthalaldehyde in equal volumes of xylene, solvent toluene is stirred and heated to reflux under nitrogen protection, and added three times within 1 hour Continue to react terephthalaldehyde in 4,4'-diaminotriphenylamine at reflux temperature for 5 hours, cool the reaction solution to room temperature, precipitate the filtrate in methanol, filter with suction, and extract with methanol for 24 hours until the small molecules are removed. Soluble matter, vacuum-dried to obtain powdered poly-Schiff base, after adding deionized water, heated to make it completely dissolved, and obtained poly-Schiff base dispersion; (2) In the reaction kettle, take 35 parts of citric acid and add 2 parts Grind boron nitride nanosheets in a reaction kettle to make them evenly mixed, heat citric acid to a molten state, stir and react for 2 hours, while controlling the temperature of the reaction kettle to 160°C, continue to react ...
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