The Synthesis And Performanc Research Of Different Kinds Of Asphalt Emulsifiers

With the efforts for decades, great achievements have been made in the research and development of asphalt emulsifier, however, there are multitudinous questions such as the sparsity of products, bad self adaptability, complex production process, harsh conditions. Nonylphenol series of amphoteric surfactants applied in Emulsifing Bitumen are novel. From that point, the thesis takes nonylphenol (NP for short) as raw material, synthesizes three series (NPA, NPB, NPC)-twelve asphalt emulsifiers containing three anionic, two cationic and seven amphoteric asphalt emulsifiers. From that point, the thesis takes N, N-dimethyl-1-Hexadecanamine (HE for short) as raw material synthesizes three amphoteric asphalt emulsifiers. The thesis synthesizes fifteen asphalt emulsifiers in all which contain three anionic, two cationic and ten amphoteric asphalt emulsifiers.The structures and thermal properties of three cationic emulsifiers in the paper were investigated by FT-IR and differential scanning calorimeter (DSC). Their Krafft points, emulsifying properties, foaming characteristics, stabilities and solubility enhancement were also tested.Fifteen asphalt emulsifiers synthesized in the paper were used for preparing emulsified asphalt. Their behavior, such as particle charges, asphalt content, residues on screening, normal viscosities, the property of wrapping coarse aggregate, and the stability stored in normal temperature were tested. The results indicated that one cationic and five amphoteric asphalt emulsifiers obtain a good result.Six asphalt emulsifiers of the thesis which obtain a good result is novel and valuable to use and spread in a certain scale.