1. Introduction to cationic slow cracking and fast setting asphalt emulsifier

Cationic slow cracking and fast setting asphalt emulsifier is a special type of asphalt emulsifier mainly used in road construction and maintenance. Its main components include nonylphenol polyoxyethylene ether, epichlorohydrin, and trimethylamine, which are synthesized through chemical reactions. The cationic slow cracking and fast setting asphalt emulsifier (LT-CMK2 type) has excellent emulsification effect and can emulsify various types and origins of asphalt. This emulsifier has wide adaptability to various types of stones and good adhesion to acidic minerals, especially suitable for micro surface construction of asphalt pavement. This emulsifier has the characteristics of fast molding speed, high early strength, and rapid opening to traffic.

2. Characteristics of cationic slow cracking and fast setting asphalt emulsifier

(1) Emulsification effect: cationic slow cracking and fast setting asphalt emulsifier can effectively emulsify asphalt to form a uniform lotion. The effectiveness of emulsification depends on factors such as the amount of emulsifier used, the pH value of the emulsifier aqueous solution, and the stirring speed.

(2) Storage stability: Under appropriate conditions, emulsified asphalt can be stored stably for more than 5 days, with uniform and small particle size.

(3) Demystification time: This emulsifier belongs to the slow cracking and fast setting type, with an initial setting time of 2 hours, suitable for the requirements of slurry sealing technology.

3. Synthesis method

The main raw materials for the synthesis of cationic slow cracking and fast setting asphalt emulsifiers include nonylphenol polyoxyethylene ether, epichlorohydrin, and trimethylamine. Synthesis of polyoxyethylene cationic asphalt emulsifier N - [2-hydroxy-3-nonylphenol polyoxyethylene ether (15)] propyl trimethylammonium chloride through chemical reaction, and characterization by infrared spectroscopy (IR) and other methods.

4. Usage method

Heat the water to 60-65 ° C, add the pre measured asphalt emulsifier, stir and dissolve, and adjust the pH value to 2-3 with hydrochloric acid in the processing industry. Heat the asphalt to 120 ° C to produce emulsified asphalt.

5. Main technical indicators of cationic slow cracking and fast setting asphalt emulsifier

(1) Appearance: Yellow viscous liquid

(2) Active ingredient content: 85 ± 2%

(3) PH value: Adjust to 2.0~2.5 with industrial hydrochloric acid

(4) Dosage: 1.5-2.2%

(5) Packaging: 200kg/drum

6. Application scenarios of cationic slow cracking and fast setting asphalt emulsifier

This emulsifier is suitable for slurry sealing, micro surface construction, etc. It can cure quickly and has a short open traffic time.