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The mechanism of action of corrosion inhibitors can be summarized into two types, namely the electrochemical mechanism, and physical-chemical mechanism. The electrochemical mechanism is based on the electrochemical process occurring on the metal surface to explain the role of corrosion inhibitors. The physical and chemical mechanism is based on the physical and chemical changes that occur on the metal surface to illustrate the role of corrosion inhibitors. The two mechanisms deal with problems in different ways, but they are not contradictory, and there is a certain causal relationship. Our company provides  organic fine chemicals . Electrochemical mechanism of corrosion inhibitor The corrosion of metals is mostly the result of galvanic reaction on the metal surface, which is also the most important factor causing erosion and corrosion. The galvanic reaction includes anode reaction and cathode reaction. If the corrosion inhibitor can inhibit either or both of the anode an...

The storage and preservation of biological macromolecules can be divided into dry and liquid storage. Therefore, there are two types of protein storage: dry storage and liquid storage. However, protein storage conditions are affected by many factors. Today, what is analyzed is the factors that affect protein storage conditions. Protein inactivation is affected by a variety of physical and chemical factors, including air, temperature, moisture, light, pH, sample status, microbial activity, storage time, and container. These factors can work alone, but more often they are synergistic. The protein storage conditions will also be affected by these aspects. The following  pharmaceutical suppliers  select a few of them for detailed analysis. 1. Air The influence of air is mainly related to deliquescence, microbial pollution, and auto-oxidation. Microbial contamination in the air can cause samples to decay and deteriorate. In addition to deliquescence and denaturation, samples...

Cut a piece of greige cloth and place it gently on the water surface. This piece of greige cloth will stay on the water surface for a while and then slowly sink to the bottom. If a little surfactant is added to the water, we find that the greige cloth placed on the water surface will immediately sink to the bottom. This is a common method to test the wetting ability of  surfactants . Generally speaking, wetting is a process in which one fluid is replaced by another fluid on a solid surface. Therefore, wetting involves at least three phases, two of which are fluids and one is solid. In the dyeing and finishing process, the gas (a fluid) on the surface of the fiber (solid) is replaced by water (another fluid). The wetting speed of greige cloth in pure water is slow because the surface tension of water is large, it cannot spread quickly on the surface of the fiber, and the air in the greige cloth cannot be quickly replaced; after surfactants are added to the water, the ...