In order to overcome the above shortcomings, the commonly used method is to modify its chemical structure. Modification methods include acylation modification, epoxy compound modification, formation of quaternary ammonium salt, etc. Organic silicon quaternary ammonium salt makes the nitrogen atom positively charged When used in fabric treatment to reduce oxidized energy and prevent yellowing, organosilicon quaternary ammonium salts are combined with fibers in two ways: one is that the positive c ...

The organopolysiloxane quaternary ammonium salt is generally synthesized by the method of first synthesizing polysiloxane and then quaternizing. When synthesizing organopolysiloxane, the method of cyclosiloxane ring-opening equilibrium polymerization is generally adopted. , The catalyst has H2SO4, KOH, (CH3)NOH, etc., and then receives functional groups (such as amine groups), and controls the amount of access groups as needed, and then performs quaternization. Quaternization of hydrogen-co ...

A composite material that uses silicone resin as a matrix, filled with fillers, or reinforced with fibers (or fabrics). Organosilicon resins are usually formed by hydrolysis and condensation of organochlorosilanes, with active groups on the molecules, which are thermosetting resins due to further curing. There are four main forms of composite materials.(1) Organic silicon glass varnished cloth, made by impregnating glass cloth with organic silicon resin and drying. Mainly used as wrapping insula ...

Cement waterproofing agent is a chemical admixture that is added to cement. When the cement hardens, it expands in volume, compensating for shrinkage and tensioning steel bars to produce prestress and fully filling the cement gap. Waterproofing agent, also known as waterproofing agent, plugging king, plugging spirit, is a new type of waterproof material, divided into organic and inorganic, and is a new high-tech waterproof product. The high-grade fatty acid mortar waterproofing agent has the cha ...

Textile brighteners are mainly used for yarn finishing and textile finishing agents. Yarn finishing is to apply textile brighteners to the finished line. The treatment of textile brighteners can produce high gloss, deeper and more vivid colors, and higher The elasticity and tensile strength. The brightener used in finishing is mainly used as an important component of textile finishing agent, the purpose is to give textiles an excellent soft hand feeling, good smoothness and gloss.Let's talk abou ...

Chemically, a surfactant refers to a substance that is amphiphilic (a long strip of solvent that is soluble in the solvent, and the two ends can be separately compatible with each other incompatible solvents), to contain both hydrophilic and lipophilic groups. Groups are the most common;The surfactants on the market are composed of chemical surfactants and their preservation solvents, preservation additives, etc.That is to say, if in a chemical sense, a surfactant refers to a certain kind of sub ...

You should know that different foaming systems require different defoamers. For example, the temperature of the foaming system will affect the use of defoamers. In a high-temperature foaming environment, the use of ordinary defoamers may cause the defoaming effect to fail because the temperature is too high. In this case, special products should be used. The high temperature resistant defoamer too.The emergence of high temperature resistant defoamers is mainly due to the fact that in the past fo ...

Among the wide variety of softeners, silicone additives have attracted more and more attention due to their unique surface properties and excellent softening properties. Most domestic fabrics finished with silicone softeners are hydrophobic, which makes the wearer feel stuffy and difficult to wash. Many products often show demulsification and bleaching. The traditional hydrophilic polyether silicone oil has better hydrophilicity and water solubility, but its flexibility and finishing effect are ...

1. Coke core (the temperature of the reaction center exceeds the antioxidant temperature of the raw material)(1) The quality of polyether polyols is problematic: the moisture in the product exceeds the standard during the production, storage and transportation, the content of peroxides and low-boiling impurities is too high, the concentration of metal ions is too high, and the type and concentration of antioxidants are inappropriate;(2) Formula: In the low-density formula, the TDI index is too h ...

The surface activity of the foaming agent The foaming agent is a surfactant, and its surface and interface properties are important indicators. The surface tension and interfacial tension of the foaming agent should be measured first. Since the injected formation is a gas-liquid two-phase, it is necessary to measure the surface tension and interfacial tension of the mixed solution injected into the formation and the vapor-condensed aqueous solution. The measurement method may be carried out by t ...