| abstract |
The invention discloses a secondary amide diamine quaternary ammonium salt amphoteric asphalt emulsifier and a preparation method thereof. The asphalt emulsifier is prepared from the following raw materials in molar ratio: cocoylpropyl dimethyl amine, The molar ratio of alcohol solvent, water, epichlorohydrin, β-hydroxyethylethylenediamine and acrylic acid is 1mol:(4.50-10.00)mol:(14.00-18.00)mol:(1.00-1.15)mol:(1.00 ‑1.20) mol: (1.00‑1.20) mol. The alcohol solvent is ethanol, methanol or isopropanol. The synthetic raw material of the asphalt emulsifier of the present invention is easy to obtain, has low production cost, simple process, and does not need high temperature reaction. It can emulsify a variety of different types of asphalt. The prepared emulsified asphalt is fine and uniform, and has good storage stability. It can prepare cationic or anionic emulsified asphalt. |