According to different types of sealants used in different industries, no matter what industry they are used in, they need to be prepared. For example, for the use of door and window seals, first remove the dirt on the doors and windows, and then use them, so as to increase the sealing effect.

PP halogen-free flame retardant is a special environmental friendly flame retardant for pp. it is a halogen-free and intumescent flame retardant specially developed for PP. It is polymerized by phosphorus and nitrogen-containing chemicals with synergistic effect. It has good compatibility in polypropylene, little influence on the mechanical properties of plastics, and excellent processing stability in the processing process. PP special environmental friendly flame retardant is different from halogen-containing flame retardant. In the process of combustion, dense expanded carbon layer is produced to achieve the purpose of heat insulation and air flame-retardant insulation, without stimulating hydrogen halide gas and black smoke. It is an environmental friendly flame retardant.

Anionic surfactants have excellent performance in decontamination, but they are often combined with non-ionic surfactants to get better deinking effect. The anionic surfactants have good foaming and degreasing properties. The nonionic surfactants present nonionic state in aqueous solution and have high stability. When the non-ionic surfactant and the anionic surfactant are used together, the colloidal particles are negatively charged and repel with electricity, forming a stable dispersion system, which is conducive to the separation and removal of ink and fiber.

Surfactant has a strong adsorption capacity on the surface of particles. When pesticide processing is added, it helps to disperse and suspend particles, and ensures that the particles are dispersed when water is diluted in the spray barrel to prevent the aggregation of particles. When ionic surfactant is selected, it adsorbs on the surface of particles, providing electric repulsion force, keeping particles separated from each other, that is, providing particle charge stabilization; when non-ionic surfactant is selected, the lipophilic part of surfactant adsorbs on the particles, and the hydrophilic part extends into the water phase around the particles, forming a space barrier, that is, providing space potential resistance stabilization.

Alkyl polyglucoside is one of the essential raw materials in shampoo, because APG has no irritation to human skin and eyes, and can also reduce the irritation of other active agents compounded with APG, so it is one of the essential raw materials in low stimulation shampoo and children shampoo. The softness of APG can protect the damaged hair, which can be used as active agent for hair dyeing and scalding, and compounded with protein hydrolysate The setting property is comparable to that of the commonly used setting agent, polyvinylpyrrolidone, and it is easier to rinse. APG can be used to prepare a new generation of shampoo and bath liquid with strong foaming power and fine foam.

The basic theoretical research of surfactant is weak. Because there may be many kinds of structural states of the same surfactant, EO-PO random polyether is a typical example. If the irregularity of random polyether changes, various forms of EO-PO chain connection will make a large number of structural differences in the same product.

Static electricity can make the tow disperse and produce filament and broken ends, and it is not easy to wind. Using the ion characteristics and hygroscopicity of antistatic agent, it can effectively prevent the accumulation of static electricity. At the same time, the adsorption and orientation of antistatic agent are also helpful to eliminate static electricity.

The surfactant can form hydrophobic groups on the surface of the fiber to adsorb outwards, reduce the dynamic and static friction factors of the fiber material, so as to obtain a smooth and soft feel. Generally, surfactant and oil are always used together. Surfactant can effectively reduce the static friction coefficient of fiber material, while oil can reduce the dynamic friction coefficient of fiber material.

Oxygenation principle of surfactant: the saturated solubility of oxygen in aquaculture water can be increased by adding alkyl glycoside surfactant. According to hydrate formation theory and bimembrane theory, due to the low solubility of oxygen in water, water oxygenates in water generally form at the gas-liquid interface first, and then slowly diffuse from the gas phase to the liquid phase. Due to the solubilization of surfactants, a large amount of oxygen is dissolved in the surfactant micelles formed in the aqueous solution, so that the formation of water oxygenate in the surfactant aqueous solution can not only occur at the gas-liquid interface, but also in the water body, reducing the formation time of water oxygenate, and improving the oxygen in the water body Solubility in.

The compounding and Synergistic Technology of surfactants in our country is relatively backward, so we should strengthen the research on the basis and application technology in this field. The technology of multi-functional synergism, solubilization, emulsification, dispersion and anti caking should be paid more attention. Compounding technology is also the key to promote the application of special surfactants in leather making. The results show that the emulsification, dispersion and wettability of surfactants can be improved by adding 10-6 grade special surfactants.

In addition to being used as antistatic agent and smoothing agent, anionic surfactant can also be used as wetting agent. Succinate sulfonate is a good wetting agent. Adding this kind of surfactant into the oil agent can improve the affinity of the oil agent to the fiber, so that the oil can be evenly applied, and the oil application rate (o.p.u) can be increased as required. A series of products can also be produced with different carbon chains of R group and different EO number. However, the commercial penetrant ot (aerosol OT) is commonly used. The surface activity of OT is still strong, and its interface ability to mineral oil can reach 5.86 (mnm-1) at 0.1% concentration. However, it should be noted that when the product is mixed with other ionic and non-ionic surfactants, it is easy to make the mixture unstable, so in practical application, it should not be added as much as possible on the basis of achieving the osmotic wetting ability. Or it can be used together with other non-ionic surfactants with strong wetting ability to meet the requirements of oil agent function.

Cationic surfactants are widely used in oil agents, such as amines (fatty amines and quaternary ammonium derivatives), which can be used as emulsifiers, antistatic agents and bactericides. High carbon alkylamine derivatives also play a strong role in the bunching of oil agents. The commonly used fungicide "jieermiao" (alkyl, benzyl, dimethyl quaternary ammonium hydrochloride) is the derivative of quaternary ammonium salt.

Green detergent is the development direction and the general trend. It is the historical mission of daily chemical industry and the lofty responsibility of engineers and entrepreneurs to develop and promote green detergent for the benefit of the country and the people. The development of green detergents may not be in harmony with the immediate economic benefits, but it should be focused on sustainable development and future generations. On the other hand, the government should encourage the development of green detergents, and give preference to tax policies and scientific and technological funds. In addition, the daily chemical industry should vigorously promote the advantages of green detergent through various channels, and actively guide green consumption.

How to analyze the phosphorus content and decomposition temperature of red phosphorus flame retardant? How to analyze the phosphorus content and decomposition temperature of red phosphorus flame retardant? With the development of synthetic material industry, the improvement of laws and regulations, and the enhancement of people ' The development and modification of flame retardant have become the main trend of flame retardant.

The adsorption of chemical surfactants on soil is stronger than that of biosurfactants, so biosurfactants can effectively transfer the oil in soil, and biosurfactants are easy to be biodegraded by indigenous microorganisms in the process of remediation of oil contaminated soil in situ. Chinese style

With the deepening recognition of medical materials used in medical devices industry, the unique special properties of liquid silicone rubber expand its application range. With these characteristics being more widely known, new applications and expanding markets are driving the application of liquid silicone rubber in medical devices more widely.

Thermosetting resin thermosetting resin includes epoxy resin, phenolic resin, polyurethane, unsaturated polyester resin, etc. This kind of resin needs multi-component blending when it is applied, so the flame retardant can be added at the same time and mixed evenly by rapid stirring. After mixing, the curing reaction is carried out at a certain temperature. After curing, a thermosetting resin material with flame retardancy can be formed.

Rotaru et al. Synthesized a new polyether polyol with high nitrogen content and good thermal stability by using Mannich, two ethanolamine, paraformaldehyde, cyanuric acid and propylene oxide. The PUF foam was prepared by Mannich polyol. The results show that because of the existence of isocyanide ring in the PU foam system, the PUF foaming by the Mannich polyol has better mechanical strength, and has better thermal stability and higher flame retardant efficiency than the traditional aliphatic PU foam system.

According to the relationship between the flame retardant and the flame retardant, the flame retardant can be divided into additive type and reactive type. The former is only physically dispersed in the substrate and is mostly used in thermoplastic polymers. The latter, as a monomer or auxiliary reagent, participates in the synthesis of polymers, and then becomes the structural unit of polymers, mostly used for thermosetting polymers.

Alkyl polyglucoside shampoo is a necessary daily chemical for people's daily life. It is an important personal cleaning product. It may even enter the eyes in the process of hair washing if it is in close contact with the skin. Therefore, it has a very high requirement for the mildness and safety. At present, most of the products on the market use sulfuric acid ester salt as foaming agent, silicone oil as smoothing agent and quaternary ammonium salt as germicide and dandruff remover. These three substances have certain irritation to the eyes. If they are inadvertently put into the eyes during the shampoo process, they will bring foreign body or tingling to the user, especially It is sensitive to mucous membrane. Dry and swollen eyes may appear after use, which seriously affects the feeling of use.