Environmentally friendly adhesive for plywood with ultra-high solid content, preparation method and application thereof
An ultra-high solid content, plywood technology, applied in the direction of polymer adhesive additives, non-polymer adhesive additives, adhesives, etc. The effect of improving the bond strength
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Embodiment 1
[0023] An environmentally friendly adhesive for plywood with ultra-high solid content, its components are composed of the following components by weight ratio:
[0024]
[0025] Adhesive preparation process:
[0026] Weigh the corresponding raw material components in parts by weight. When preparing the adhesive, first mix sucrose, citric acid and water, and react at 90°C for 1 hour under low-speed stirring conditions, and then add ammonium dihydrogen phosphate and sodium sulfite to the mixture. In the reaction system, react at 100°C for 1 hour under low-speed stirring conditions, then add sodium sulfite to the reaction system, react at 90°C for 0.5 hours under high-speed stirring conditions, and finally close the reaction kettle, and wait until the temperature of the reaction system drops to room temperature Add polyacrylamide to the solution, and stir at low speed for 0.2 hours.
[0027] The solid content of the prepared adhesive is 85.6%.
[0028] Described water is dis...
Embodiment 2
[0032] An environmentally friendly adhesive for plywood with ultra-high solid content, its components are composed of the following components by weight ratio:
[0033]
[0034] Adhesive preparation process:
[0035] Weigh the corresponding raw material components in parts by weight. When preparing the adhesive, first mix sucrose, citric acid and water, and react for 1.5 hours at 80°C under low-speed stirring conditions, and then add ammonium dihydrogen phosphate and sodium sulfite to the mixture. In the reaction system, react at 90°C for 2 hours under low-speed stirring conditions, then add sodium sulfite to the reaction system, react at 80°C for 1 hour under high-speed stirring conditions, and finally close the reaction kettle until the temperature of the reaction system drops to room temperature Add polyacrylamide to the solution and stir at low speed for 0.5 hours.
[0036] The solid content of the prepared adhesive is 77.2%.
[0037] Described water is distilled wate...
Embodiment 3
[0041] An environmentally friendly adhesive for plywood with ultra-high solid content, its components are composed of the following components by weight ratio:
[0042]
[0043] Adhesive preparation process:
[0044] Weigh the corresponding raw material components in parts by weight. When preparing the adhesive, first mix sucrose, citric acid and water, and react at 85°C for 1 hour under low-speed stirring conditions, and then add ammonium dihydrogen phosphate and sodium sulfite to the mixture. In the reaction system, react at 95°C for 3 hours under low-speed stirring conditions, then add sodium sulfite to the reaction system, react at 85°C for 1 hour under high-speed stirring conditions, and finally close the reaction kettle until the temperature of the reaction system drops to room temperature Add polyacrylamide to the solution and stir at low speed for 0.3 hours.
[0045] The solid content of the prepared adhesive is 70.6%.
[0046] Described water is distilled water. ...
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Abstract
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