Silicones The most commonly used is polydimethylsiloxane, also known as dimethyl silicone oil. It has low surface energy, low surface tension, low solubility in water and general oil, and high activity. Its main chain is a silicon-oxygen bond, which is a non-polar molecule. It has no affinity with polar solvent water, and has little affinity with general oils. It has low volatility and chemical inertness, relatively stable and low toxicity. Pure dimethiconeAlkane, it is difficult to be used as a ...

Paint wetting agents are divided into two types: substrate wetting agent and wetting dispersing agent. The substrate wetting agent is used to improve the surface tension and permeability of the coating, so that it can better wet the substrate, thereby improving Coating adhesion, especially for improving the adhesion of primers to substrates, is widely used, generally some fluorocarbon or fluorocarbon modified ionic or non-ionic substances or other substances that can improve the wetting of the s ...

Background technique:Agricultural aviation plant protection is the use of planes to spray pesticides or fertilizers to prevent and control diseases, pests, and weeds in farmland, forests, and grasslands or to manage field growth. During the aerial plant protection spraying process, since the spray volume per mu is 0.5-1.5L, the dilution concentration of pesticides is about 15 times higher than that of artificial or mechanical spraying on the ground. The demand for pesticide formulations and the ...

In the formulation, the main functions of surfactants are: one is to improve the emulsifying ability between the components, so that they can be more effectively mixed with each other; the other is to control the system to have proper surface tension during the foaming process to produce a good Bubble network structure, therefore, can also be called foam stabilizer. Polyester and polyether flexible foam have different raw material bases and different properties. Therefore, the selection and dosa ...

Whenever we agitate the liquid or be introduced into the gas, many bubbles will be generated inside the surface of the liquid, and some bubbles generated by the liquid will quickly break and disappear. Some liquids not only do not disappear, but also gather more and form bubbles. Foam is a dispersion system formed by a large number of bubbles dispersed in a liquid. The dispersed phase is gas and the continuous phase is liquid. Among them, the volume fraction of the foaming liquid is very small, ...

Defoamers can be divided into many types, including water-based defoamers and oil-based defoamers, so the question is, what is the difference between water-based defoamers and oil-based defoamers ? How to choose them? Let’s talk to the editor of Haian Petroleum!The price of water-based defoamers is relatively low, and they are widely used in textile printing and dyeing, pulping and papermaking, chemical reactions, petrochemicals, metalworking fluids, biological fermentation, water treatment and ...

Performance characteristicsThis product is a long-lasting anti-foaming polyether-modified silicone defoamer specially developed for use in harsh environments such as high temperature, high pressure, acid and alkali using imported raw materials. This product is made of polyether copolymer with strong hydrophilicity and long-lasting foam suppression and polysiloxane with strong hydrophobicity and rapid foam breaking as the main components. This product is different from general emulsion defoamers. ...

my country's herbicide industry has grown from scratch, from small to large, and has gradually developed, and has now formed a complete industrial system. In more than 60 years, my country's herbicide industry has gone through a long process from quotation to introduction, from imitation to creation. According to statistics, since the implementation of pesticide registration in my country in 1982, nearly 200 herbicide varieties (active ingredients) have been registered by the Ministry of Agricul ...

Antifoaming agents are generally composed of multiple components with different functions, that is, main antifoaming agent, auxiliary antifoaming agent, carrier, emulsifier or spreading agent, stabilizer or compounding agent.(1) Main anti-foaming agent: the main active component, usually insoluble particulate matter, such as hydrophobic silica, fatty amine, paraffin, etc. that have been treated with silicone oil(2) Auxiliary defoamer: It is an active component that plays a regulatory role, impro ...

Pesticide adjuvant is the general term for various adjuvants used in chemical pesticide processing formulations in addition to active ingredients. The adjuvant itself has no biological activity, but has a synergistic effect. It can improve the efficacy, reduce the amount of pesticides, save costs, and reduce the pollution of pesticides to the environment. The synergistic effect of adjuvants on pesticides, especially herbicides, is mainly achieved by increasing the amount of pesticides on the pla ...