The main reaction for the synthesis of cationic surfactants is N-alkylation, in which tertiary amines react with alkylating agents to form quaternary ammonium salts. This reaction is also called quate......
2020-04-13Most of the commercially-available cationic surfactants are derivatives of organic nitrogen compounds, and their positive ion charges are carried by nitrogen atoms, and some new cationic surfactants h......
2020-04-13Foam plays an important role in the washing process. Foam refers to a dispersion system in which gas is dispersed in liquid or solid. Gas is the dispersed phase, and liquid or solid is the dispersion ......
2020-04-09Common emulsions, one phase is water or aqueous solution, and the other phase is organic matter immiscible with water, such as grease, wax, etc. The emulsion formed by water and oil can be divided int......
2020-04-09The surface pressure of the adsorption membrane: the surfactant adsorbs at the gas-liquid interface to form an adsorption membrane. For example, a frictionless movable float is placed on the interface......
2020-04-09①Surface tension The shrinkage force of any unit length of the liquid surface is called surface tension, and the unit is N • m-1. ②Surface active and surfactant The property that can reduce the s......
2020-04-09Excellent characteristics of high temperature vulcanized silicone rubber sealing strip 2.1 excellent weather resistance and aging resistance. The bond energy of silicone rubber is higher than that ......
2020-04-09High temperature vulcanized silicone rubber sealing strip is a kind of sealing strip made of a new material. It is mainly based on methyl vinyl raw rubber, with reinforcing filler, wetting agent (stru......
2020-04-09Since late March, I believe that many people, like editors, have seen the number of newly diagnosed new crowns in the world increase every day, see the high-pr......
2020-04-08Brief introduction of silicone mask Silicone masks have been developed for anti-virus and anti-fog in the early years, and the choice of silicone masks has a relatively long service life and ......
2020-04-085. Perfusion Pouring molds or pouring molds are used for relatively smooth or simple products. There is no mold line to save labor and time, which is to surround the product or model you want to copy......
2020-04-083. Extrusion Extrusion molding, the products are usually formed by extruding the silicone through the extrusion machine. Generally, the shape of the extruded silicone is long, and the tube can be cut......
2020-04-08In a sense, the application of silicone rubber products is still very wide, such as silicone shovel for children, silicone protective bag, silicone spoon for kitchen, silicone gloves and consumer elec......
2020-04-08(1) Ordinary water reducing agent: Under the condition that the slump of the concrete is basically the same, it can reduce the amount of water for mixing. (2) High-efficiency water reducing agent: Un......
2020-04-01(1) Additives to improve the rheological properties of concrete mixtures, including ordinary water reducers, high-efficiency water reducers, early-strength water reducers, retarder, Slow-setting high......
2020-04-01