Method for synthesizing amphoteric slow-breaking quick-setting asphalt emulsifier

Abstract

The invention discloses a method for synthesizing a novel amphoteric slow-breaking quick-setting asphalt emulsifier, belonging to the technical field of organic chemical synthesis. The method comprises the following steps of: reacting oleic acid with polyamine to generate acid amide polyamine, and then adding chloroactic acid to generate halogenating reaction to prepare the asphalt emulsifier, wherein the polyamine is the mixture of diethylenetriamine and triethylene tetramine. The water solubility of the hydrophilic radical of the emulsifier synthesized by the process is stronger than those of like emulsifiers, thereby obviously lowering the critical micelle concentration (CMC) value, and the particles of the produced asphalt emulsion are finer, smoother and evener. The emulsifier can effectively prevent asphalt from settling, increases the storage stability of the asphalt emulsion, reasonably regulates the charge ratio, widens the selectivity on stone materials in the application of slurry seal construction, enables the mixing time to be sufficient, and has obvious quick-setting effect and improved project quality.

Description

technical field [0001] The invention relates to a method for synthesizing an asphalt emulsifier, which belongs to the technical field of organic chemical synthesis. Background technique [0002] With the development of the highway industry, the application of emulsified asphalt involves many fields, and the emulsifiers have also appeared in serialization and diversification. Nowadays, the expressway slurry seal and micro-surfacing are popular in my country's highway industry, slow cracking and fast Curdling agents are also widely used. The emulsified asphalt produced by this kind of emulsifier requires sufficient mixing time with the stone, and also has a fast setting effect. At present, fatty amide polyamine emulsifiers are mostly used in the application of emulsifiers for slurry seal and micro-surface in the market, which are highly selective to stone materials during construction. The reason is that the charge strength on the hydrophilic group of the fatty amide is not e...

AI Technical Summary

Problems solved by technology

The reason is that the charge strength on the hydrophilic group of the fatty amide is not enough, and the diffusion double layer formed is weak, which affects the storage stability of the asphalt emulsion, causes the segregation of the asphalt emulsion, leads to the different ratio of asphalt during construction, and affects the quality of the project; and simply use The cost of fatty acid amide is relatively high, and when it is compounded with other non-ionic emulsifiers, it will affect the effect of rapid setting, so its popularization and application are greatly hindered

Images