54results about How to "Enhanced charge strength" patented technology

The invention discloses a secondary amide di-quaternary ammonium salt type hydroxypropyl sodium sulfonate asphalt emulsifier and a preparation method thereof, wherein the secondary amide di-quaternary ammonium salt type hydroxypropyl sodium sulfonate asphalt emulsifier is prepared from the following raw materials N-hydrogenated tallow-1,3-propylene diamine, an alcohol solvent, N-hydroxymethyl acrylamide, epichlorohydrin and sodium bisulfite according to a molar ratio of 1:(5.00-11.00):(3.00-3.10):(2.00-2.30):(2.10-2.50), and the alcohol solvent is ethanol, methanol or isopropanol. According to the present invention, the preparation method has advantages of easily available raw material, low production cost, simple process and no requirement of high temperature reaction; and the obtained secondary amide di-quaternary ammonium salt type hydroxypropyl sodium sulfonate asphalt emulsifier can emulsify a variety of different types of asphalts, and can be used for preparing cationic emulsified asphalts, and the emulsified asphalt prepared from the secondary amide di-quaternary ammonium salt type hydroxypropyl sodium sulfonate asphalt emulsifier has advantages of fine and uniform property and good storage stability.

The invention discloses a preparation method of an ultra-fine packaged cadmium sulfide selenide ceramic pigment. The steps are: 1) dissolving cadmium salt and surfactant in water to obtain solution A, dissolving sodium sulfide and selenium in water to obtain alkaline solution, dropping solution A into the alkaline solution to obtain cadmium sulfide selenide precursor, and then Carry out hydrothermal reaction to obtain dispersed cadmium sulfide selenide; 2) add water glass solution to acid solution, control pH to obtain silicic acid solution; 3) add dispersed cadmium sulfide selenide to zirconium oxychloride dispersion liquid, add silicon Acid solution, adjust the concentration of silicon ions and zirconium ions, adjust pH, and heat to obtain gel; 4) After drying the gel, mix it with a mineralizer, and calcine to obtain an ultra-fine packaged cadmium sulfide selenide ceramic colorant . The particle size D100 of the colorant prepared by the method is less than 1.3 μm, and the controllable and reproducible conditions of the method are very good, which is very suitable for large-scale production.

The invention discloses a lignin cyclamine cationic-type asphalt emulsifier and a preparation method and application thereof. The molecular structure general formula of the emulsifier is as shown in the description, wherein R is a methyl group (-CH3) or an ethyl group (-C2H5) or a hydroxyethyl group (-C2H4OH), and LIGNIN represents a lignin molecular chain. The lignin cyclamine cationic-type asphalt emulsifier is prepared from, by mass, 100 parts of lignin, 159-230 parts of water, 19-27 parts of sodium hydroxide, 42-50 parts of N-aminoethylpiperazine, 23-29 parts of acrylic acid, 30-36 parts of formaldehyde (37%), 35-82 parts of tertiary amine with a low carbon number, 42-50 parts of industrial hydrochloric acid (30%) and 31-37 parts of epoxy chloropropane. According to the lignin cyclamine cationic-type asphalt emulsifier, the synthesis raw materials are easy to obtain, the production cost is low, the technology is simple, and high-temperature reacting is not needed; the emulsifier can emulsify different types of asphalt, the prepared emulsified asphalt is fine and uniform, the storage stability is good, and rapid-cracking cationic-type emulsified asphalt can be prepared.