With the increasingly prominent environmental problems of chemical surfactants, the application of biosurfactants has attracted more and more attention. In the late 1980s, the development of biosurfactants using bioengineering technology has become a new topic in the field of international bioengineering. In the past 20 years, with the rapid development of modern biotechnology and the application of biosurfactants in oil exploitation, environmental protection, pharmaceutical, food processing and other fields, people have a strong interest in using this technology in the industrial field. The enhancement of global environmental awareness has further promoted the trend of biosurfactants replacing chemical surfactants.

In acid bath dyeing, amino groups of silk can absorb acid, neutral, direct dyes and anionic surfactants with negative charges. At this time, anionic surfactants and dyes compete for dye bases according to their affinity. When anionic surfactants have a larger affinity, the rate of dye adsorbed by fibers slows down, which reduces the dye uptake rate of anionic dyes.

The removal of silicone structural adhesive should be different from that of edible and non edible utensils. A good way is to remove it by physical methods. Use steel wire balls, knives and water sandpaper. For thick and much local areas, use a knife to scrape, then use steel wire balls to scrape, and finally use sandpaper to polish. Pay attention to avoid that the utensils that are crossed should be careful to prevent the glass glue from falling off, The removal of all-purpose glue stains, clothes infected with all-purpose glue stains, can use acetone or banana water drop on the glue stains, to use a brush to repeatedly wash, after the glue stains become soft and take off from the fabric, then rinse with water. If it can't be done at one time, it can be rinsed several times and finally cleaned. Do not use this method for fabrics containing acetate to prevent damage to the fabric.

Polyether amine can be used as curing agent, mainly to play a good viscosity, so in the field of application is relatively broad, it generally contains the primary amine connected to one end of the main chain of polyether. The main chain generally has the mixed structure of EO, PO or EO / PO, so it is named "polyether amine". One of the purposes is to use it as curing agent of epoxy jewelry adhesive. Why choose it as curing agent?

Alkyl polyglucoside (APG) is a new kind of green, mild and non-toxic non-ionic surfactant which has been developed in the world since 1990s. APG has excellent properties, low surface tension, strong detergency, rich foam, fine and stable, no irritation to human skin, complete biodegradation, no pollution to the environment, and many characteristics of non-ionic and anionic surfactants. It is compounded with most surfactants, which can enhance the efficiency of other surfactants, especially in the aspect of ecological safety. Therefore, it is called "green surfactant".

Polyether amine can be used as curing agent, mainly to play a good viscosity, so in the field of application is relatively broad, it generally contains the primary amine connected to one end of the main chain of polyether. The main chain generally has the mixed structure of EO, PO or EO / PO, so it is named "polyether amine". One of the purposes is to use it as curing agent of epoxy jewelry adhesive. Why choose it as curing agent?

Hydrophilic (oleophobic) hydrocarbon group surfactants are generally used in aquatic products. When the surfactant molecules enter the aqueous solution, the oleophobic group of the surfactant tends to escape from the aqueous phase in order to reduce the contact with the water as much as possible. However, due to the existence of the hydrophilic group in the surfactant molecules, it cannot escape from the aqueous phase completely. The result of the equilibrium is that the surfactant molecules in the solution It is enriched on the surface, that is, the lipophilic group is toward the air, and the hydrophilic group is inserted into the water phase, so the interface formed by the original water and air is gradually replaced by the interface formed by the lipophilic group and air of the surfactant, the surface tension of water is reduced, and the air is more likely to enter the water body.   

Surfactant is a main component of detergent decontamination formula. Except for special use, these products are discharged into the environment directly or after being treated by sewage treatment plant. However, the anionic surfactants which are difficult to be biodegraded are the most important in detergents. The massive discharge of surfactant containing wastewater will not only directly harm the aquatic environment, kill the microorganisms in the environment, inhibit the degradation of other toxic substances, but also lead to the reduction of dissolved oxygen in the water, especially the nitrogen and phosphorus containing surfactants will cause eutrophication of the water. When the surfactant in the sewage reaches a certain concentration, it will affect many processes, such as aeration, sedimentation, sludge nitrification and so on.

Sealant is widely used. Many people don't understand the problems of its use. The following advanced acid sealant manufacturers will share the key points for you:

In general, the dispersion, fluidity, compatibility with resin, thermal stability and weatherability of the flame retardant masterbatch are much better than those of the ordinary flame retardant, and the formula of the flame retardant masterbatch is flame retardant.

With the progress of science and technology and the improvement of living standards, polymer materials, especially synthetic polymers, such as plastics and rubber, are becoming more and more important in people's lives, and their applications are expanding year by year. However, most organic polymer materials have different flammability characteristics in air. In order to realize its application in military, aerospace, transportation, electric power and civil fields, flame retardant modification has become a new topic.

Flame retardant masterbatch (bromine / halogen system) is also called flame retardant masterbatch, which is one of the flame retardant products with excellent performance in plastics, rubber and other resins. Flame retardant masterbatch (masterbatch) is a kind of granular product made by organic combination,

Flame retardant and flame retardant masterbatch are the best in flame retardant material industry. Flame retardant masterbatch is the processing cost of flame retardant, so what's the difference between them? Let's get to know each other.

Nonionic surfactant. It is mainly used as emulsifier for emulsion, cream and shampoo cosmetics. It has excellent water solubility and can be used to produce oil in water emulsion. It can also be used as antistatic agent. As a hydrophilic emulsifier, it can enhance the solubility of some substances in water, and can be used as an emulsifier for making O/W emulsion. It has good properties of emulsification, decontamination and cleaning. It is widely used in the preparation of civil detergents, industrial emulsifiers and metal cleaners. A kind of

There are many problems in the use of halogen-free flame retardant. However, only by understanding the causes and solutions can we solve the problems correctly. Some customers will think that the higher the concentration of halogen-free flame retardant is, the better the fire-retardant effect will be, and the higher the concentration of halogen-free flame retardant will lead to a certain degree of change in the flame retardant, so what should be done if the concentration of halogen-free flame retardant is too high in the use process? Now with the halogen-free flame retardant manufacturers to understand.

When polyether amine technology is used, generally we need to know what physical and chemical properties it has, so that we can better use the product. Then for its use, we simply collated the following for you, hoping to help you.

In the pesticide industry, a certain amount of surfactants are needed for wettable powder, emulsifiable oil and concentrated emulsion. For example, most of the raw materials of wettable powder are organic compounds, which are hydrophobic. Only in the presence of surfactants, reducing the surface tension of water, can the particles be wetted by water and form water suspension.

There is a change process of surfactant forming micelles in solution with the change of concentration of aqueous solution. When the concentration of surfactant in solution is very low, that is, when the concentration of surfactant in solution is very thin, air and water are almost in direct contact. The surface tension of water drops little, approaching the state of pure water. There are only a few surfactant molecules in water. When the concentration of surfactant increases slightly, the surface activity Agent molecules will soon gather on the surface of the water. The covering of water will reduce the contact between water and air, and the surface tension of the solution will drop sharply.