Bitumen emulsifiers are surfactants that can be used for bitumen emulsification.
When the addition of a small amount of water can make a significant reduction in surface tension, can significantly change the interface properties and state of the system, resulting in wetting, emulsifying, blistering, washing, dispersion, anti-static, lubrication, A series of roles to meet the practical application requirements.
Bitumen Emulsifier is a type of surfactant. Its chemical structure consists of lipophilic and hydrophilic groups. It can adsorb a surfactant that acts as a mixture of bitumen and water, thereby significantly reducing the free energy of the interface between the bitumen and the water, making it a uniform and stable emulsion.
Surfactant is a substance that can significantly reduce the surface tension of a water by adding a small amount, which can significantly alter the interface properties and state of the system, resulting in wetting, emulsifying, foaming, washing, dispersing , Anti-static, lubrication, add a series of effects, in order to achieve the practical application requirements.
Regardless of the type of surfactant, it is always composed of a non-polar, hydrophobic, oleophilic hydrocarbon moiety and a polar, oleophilic hydrophilic group in its molecule, which is often divided into a surface Active agent molecules at both ends, forming an asymmetric structure. Therefore, the molecular structure of surfactants is characterized by a lipophilic and hydrophilic amphiphilic molecules, with the oil and water to connect the two functions.
Surfactants in water over a certain concentration (critical micelle concentration), through the hydrophobic effect of the formation of micelles. The optimal amount of emulsifier for emulsified asphalt is much greater than the critical micelle concentration.
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