Preparation method of amphoteric ionic warm asphalt mixing agent and application thereof in warm mix asphalt
A technology of zwitterion and warm mix agent, which is applied to asphalt warm mix agent and its application in warm mix asphalt, can solve the problems of insufficient water damage resistance, insufficient adhesion performance and limited temperature of asphalt mixture, and achieves Ease of industrialization, viscosity reduction, emulsification and dispersion promotion
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Embodiment 1
[0043] Add 27.0 g (0.1 mol) of octadecylamine, 50 ml of ethanol and 19.4 g (0.21 mol) of epichlorohydrin into a three-necked flask, and heat to 40° C. for 3 h to obtain an intermediate product. Add 22.3 g (0.22 mol) of triethylamine dropwise into the three-necked flask at 40°C. After the dropwise addition, raise the temperature to 90°C and react for 10 hours to obtain a diquaternary ammonium salt emulsifier, add 15.5g (0.15mol) of sodium bisulfite, 10ml of water and 30ml of ethanol to another three-neck flask, and heat to 80°C , add dropwise 9.0g (0.1mol) of epichlorohydrin into the reaction flask, and react at 80°C for 3h to obtain the intermediate after the dropwise addition is complete. In the final step, the prepared diquaternary ammonium salt emulsifier was mixed with the intermediate and reacted at 100°C for 5 hours to obtain a zwitterionic emulsifier, and the solvent was evaporated to obtain a crude product that was separated by a column to obtain a relatively pure zwit...
Embodiment 2
[0054] Add 27.0 g (0.1 mol) of octadecylamine, 50 ml of chloroform and 22.2 g (0.24 mol) of epichlorohydrin into a three-neck flask, and heat to 30° C. for 4 h to obtain an intermediate product. Add 39.1 g (0.23 mol) of trimethylamine dropwise into the three-necked flask at 30°C. After the dropwise addition, the temperature was raised to 80° C. for 5 hours to obtain a double quaternary ammonium emulsifier. Add 15.5g (0.15mol) of sodium dihydrogen phosphate 16.8g (0.14mol), 10ml of water and 30ml of chloroform into another three-necked flask, heat to 40°C, and drop 9.2g (0.1mol) into the reaction flask The epichlorohydrin was added dropwise and reacted at 40°C for 2.5h to obtain an intermediate. In the final step, the prepared diquaternary ammonium salt emulsifier was mixed with the intermediate and reacted at 60°C for 3 hours to obtain a zwitterionic emulsifier. The solvent was distilled off to obtain a crude product that was separated by a column to obtain a relatively pure ...
Embodiment 3
[0065] Add 27.0g (0.1mol) of octadecyldimethyl tertiary amine, 50ml of dioxane and 23.1g (0.25mol) of epichlorohydrin into a three-neck flask, heat to 35°C for 5h to obtain an intermediate product . Add 35.5 g (0.26 mol) of dimethylamine dropwise into the three-necked flask at 35°C. After the dropwise addition, the temperature was raised to 90° C. for 8 hours to obtain a double quaternary ammonium emulsifier. In another three-necked flask, add 21.3g (0.15mol) of disodium hydrogen phosphate, 10ml of water and 30ml of methanol, heat to 80°C, and dropwise add 13.8g (0.15mol) of epichlorohydrin into the reaction flask, After the dropwise addition was complete, react at 60° C. for 2 h to obtain an intermediate. In the final step, the prepared diquaternary ammonium salt emulsifier was mixed with the intermediate and reacted at 60°C for 3.5 hours to obtain a zwitterionic emulsifier, and the solvent was evaporated to obtain a crude product that was separated by a column to obtain a ...
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