Scholars at home and abroad have carried out a lot of meaningful research and exploration on the remediation of PAH-contaminated soil by surfactants. However, the existing research mainly focuses on traditional surfactants, and traditional surfactants often have problems such as toxicity, secondary pollution, and high price. Therefore, finding economical, effective and environmentally friendly new surfactants will become the future application of surfactant repair. Research hotspots and key points of PAH-contaminated soils.

If the formulation design of cosmetics is flawed, it may cause abnormal skin reactions during use, which in turn may affect people's mood or health to some extent. Therefore, the raw materials for the production of cosmetics cannot have immune rejection reactions with the human body, that is, they must be non-irritating and non-toxic to the skin, hair, eye mask, etc., and have good appearance, skin feel, and good spreadability and stretchability.

The solubilization of oily soils by surfactant micelles may be an important mechanism for the removal of small amounts of liquid soils from solid surfaces. Various organic substances that are insoluble in water are added and dissolved in different parts of the micelle due to their different properties to form a transparent and stable solution.

When the concentration is high, a bilayer adsorption film is formed on the metal surface due to the interaction of hydrophobic groups. The increase of the surfactant concentration can improve its corrosion inhibition efficiency. When the concentration is increased to make it reach saturation adsorption on the metal surface, it shows a good corrosion inhibition efficiency. For a certain series of surfactants, the corrosion inhibition efficiency is The critical micelle concentration cmc reaches a large value. 

With the development of social economy and socialist society in cities, people's living standards are constantly improving, but in addition, the problems of environmental analysis and optimal allocation of resources are increasingly not optimistic. Performing waste sorting is a top priority. The occurrence of garbage sorting rooms has further improved the production efficiency of cleaning workers and the work efficiency of garbage sorting and recycling. Polyetheramine technology is often used as a foaming agent after generating polyetheramine. Of course, it is precisely because of the existence of such products that we can achieve an excellent effect when using the product.

Las / AEO is the main component of traditional kitchen detergents. Due to its poor solubility, foaming and mildness, it is necessary to add more toxic cosolvent alkylamine oxide to improve its performance. APG has good solubility, mildness, foaming power and degreasing, and has excellent synergistic effect with LAS. The foam performance and cmc value of Las / APG are better than those of single component, and the water resistance, hardness and irritation of the mixture are almost the same as those of APG. It is easy to rinse, free of stains and has a refreshing and comfortable sense of use. Las / APG is becoming the main component of a new generation of clothing and meal detergents.

Polyether amine can be used as a curing agent in concrete, so we should not only control its skills and methods, but also pay special attention to the relevant matters of operation. In construction, if the operation is improper, it is easy to shorten the life of the ground. Then, in this process, what should we do if the ground is sanded?

Alkyl glycosides have good solubility in water. The main reason is that many hydroxyl groups on the glycoside head group can form hydrogen bonds in water. However, it should be noted that although the glycoside head group in APG molecules has a stronger ability to form hydrogen bonds with water than the alkyl chain, its hydration degree is far less than that of polyoxyethylene nonionic surfactants. Therefore, APG does not have cloud point and diluted gel like other non-ionic surfactants. This property makes the complex system it participates in to build have no temperature induced phase transition, which provides convenience for people to prepare products that can exist stably in a wide temperature range.

In recent years, the anaerobic fermentation of food waste to produce volatile fatty acids (VFA) has been widely studied. Hydrolysis is the rate limiting step of anaerobic fermentation of food waste.

Surfactants are often used in industrial industries. For the use of surfactants, most of them are used in the washing and textile industries. For all fine industrial industries, it is impossible to leave the use of surfactants. All our industries related to industry, including the pharmaceutical industry, are inseparable from the use of surfactants. There is also the paper industry, which is also a field of the fine industry. In the paper industry, surfactants are also widely used.

The multi-purpose detergent is used to wash the oil stain on the fabric at 60 ℃, and generally does not contain bleaching agent. Foam should be controlled due to strong mechanical effect during washing. Therefore, the amount of APG used in liquid multipurpose detergents containing anionic surfactants is limited. Table 7 is the reference formula of liquid multi-purpose detergent containing APG.

The multi-purpose detergent is used to wash the oil stain on the fabric at 60 ℃, and generally does not contain bleaching agent. Foam should be controlled due to strong mechanical effect during washing. Therefore, the amount of APG used in liquid multipurpose detergents containing anionic surfactants is limited. Table 7 is the reference formula of liquid multi-purpose detergent containing APG.

There are many problems in the use of halogen-free flame retardants. However, only by understanding the causes and solutions can the problems be solved correctly. Some customers may think that the higher the concentration of halogen-free flame retardants, the better the flame retardancy effect. Therefore, the higher the concentration of halogen-free flame retardants, the flame retardants will change to a certain extent. What should be done if the concentration of halogen-free flame retardants is too high in the use process? Now let's have a look with the halogen-free flame retardant manufacturer.

Optimization of surfactant system suitable for low permeability reservoirs has important guiding significance for improving oil recovery.  

As a grinding aid, surfactant also plays a lubricating role, which can improve the specific surface area of the product, shorten the grinding time and improve the grinding efficiency. Its action mechanism can be summarized as: reducing crushing energy, increasing brittle fracture probability, preventing plastic deformation, controlling flocculation and aggregation of fine particles, strengthening dispersion and adjusting rheological property of slurry.

Magnesium hydroxide is a kind of inorganic flame retardant and smoke suppressant with high filling amount and additive. The flame retardant mechanism is as follows: when magnesium hydroxide is heated at 340-490 ℃, it decomposes and absorbs the heat on the surface of the combustor to achieve the flame retardant effect; At the same time, a large amount of water is released to dilute the oxygen on the surface of the combustibles, and the decomposed active magnesium oxide will adhere to the surface of the combustibles, further preventing the combustion.

Biosurfactants are the secondary metabolites of some microorganisms (bacteria, fungi, yeasts, etc.), which are accumulated in the culture solution in large quantities, causing significant changes in the surface tension, critical micelle concentration and other physical and chemical properties of the culture solution. Researchers usually use high-density fermentation method to make the content of Biosurfactant in the culture liquid reach a large level, and then obtain the finished product of surfactant through separation and purification, which has been applied in environmental pollution treatment and other aspects, and achieved good results.

The application principle of surfactant in water-based metal cleaning agent is to weaken or offset the adhesion of oil on the metal surface through the wetting, penetration, emulsification, dispersion, solubilization and other properties of surfactant, and accelerate the oil to leave the metal surface by mechanical and physical methods and enter the washing liquid to be emulsified, dispersed and suspended or solubilized in micelles.

Biosurfactants can be used as food additives in food industry. Lecithin and its derivatives, fatty lipids containing glycerol, sorbitan, ethylene glycol, derivatives of glycerol monoester, and recently synthesized oligopeptides are widely used as emulsifiers in the food industry. Emulsifiers not only play a role in dispersion, but also play a great role in the formation of appropriate viscosity and texture of products.

As we all know, environmental protection flame retardant is a kind of flame retardant. Environmental protection flame retardant is a composite material based on resin and rubber.