We are no stranger to potassium hydroxide. Industrial potassium hydroxide is a commonly used product in the industry. As such products are involved, their viscosity has attracted many people's attention. Some people believe that viscosity is closely related to quality. There is a connection between them. The higher the viscosity, the better the quality, but is that really true? Let's go and have a detailed look with Xiaobian.
Viscosity refers to the viscosity at concentration and temperature. Industrial potassium hydroxide must have viscosity. But it does not mean that the higher the viscosity of industrial potassium hydroxide, the higher the molecular weight and the better the quality. In fact, there is generally no way to improve the viscosity of industrial potassium hydroxide that has been produced, or add cross-linking agent to make it partially branched or cross-linked, change its hydrodynamics, and increase its viscosity to a certain extent.
The direct way to improve the viscosity of industrial potassium hydroxide is to increase the degree of polymer and its molecular weight. Another method is to add plasticizer and nucleating agent during cleaning, which can improve the crystallinity of industrial potassium hydroxide and thus improve the viscosity of the product. However, this method is not advisable because it will not reduce the cost, but will increase the cost, so it can only be used as a thickener, for example, it can be used in the incense industry. The higher the molecular weight, the better the actual effect.
There is no relationship between viscosity and mass. This is not to say that the quality of high viscosity will be better. When we choose, we should choose the right method, for example, from this aspect:
It is not corrosive at normal temperature, but it will cause serious corrosion to many metals under high temperature and stress. The materials of equipment and pipes with different concentrations of solution at different temperatures are different, and the concentration of KOH solution is 0~30%. If the temperature is lower than 50 ℃, the equipment and pipes made of Class I materials are generally corrosion resistant; However, 0%~30% solution has good corrosion resistance to equipment and pipes made of Class II materials at 50~100 ℃.
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