Synthesis and application of hyperbranched surfactant

Abstract

The invention relates to the technical field of research on the emulsifying property of coal pitch, particularly relates to a hyperbranched surfactant and also relates to a preparation method of the hyperbranched surfactant. The preparation method comprises the following steps: synthesizing a hydroxyl-terminated hyperbranched polymer, wherein the hydroxyl-terminated hyperbranched polymer is synthesized by the steps of performing reaction on succinic anhydride and diisopropanolamine which serve as raw materials to generate an AB2 monomer, and performing reaction on the AB2 monomer and trimethylolpropane according to a certain molar ratio to generate the hydroxyl-terminated hyperbranched polymer; and modifying the hydroxyl-terminated hyperbranched polymer, introducing sulfonic group at the tail end of the hydroxyl-terminated hyperbranched polymer to synthesize the hyperbranched surfactant. Compared with the traditional emulsifier, the hyperbranched surfactant has a large amount of activegroups and has high surface activity, high compatibility and excellent emulsifying property. When the hyperbranched surfactant is applied to research on the emulsifying property of the coal pitch, the coal pitch can be emulsified effectively and the obtained coal pitch emulsion has high stability.

Description

technical field [0001] The invention relates to the field of research on the emulsification performance of coal tar pitch, in particular to the synthesis and application of a hyperbranched surfactant. Background technique [0002] Asphalt is a mixture of various polymers with good physical and chemical properties, including: strong adhesion, strong aging resistance, good waterproof performance and many other advantages, because of its good performance is widely used in waterproof materials, Road repairs, etc. Emulsified asphalt is a form of use of asphalt. Compared with other forms of use, emulsified asphalt can save 40-50% of energy, and the construction method is simple, which can effectively save the cost of use and reduce the environmental impact caused by heating asphalt. Pollution. [0003] The key to the preparation of emulsified asphalt is to choose a suitable surfactant, among which anionic surfactants are widely used because of their wide variety and low price. ...

AI Technical Summary

Problems solved by technology

Anionic surfactants play a major role in the asphalt emulsification process because of their anionic active group, which is a hydrophilic group. An anionic surfactant molecule often contains only one hydrophilic group, and the active group There are fewer groups, so the emulsification effect of the surfactant is small, and there are certain emulsification defects

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