Silica Gel Desiccant Silicone desiccant characteristics, silica gel desiccant is a highly active adsorption material, the chemical nature of inactive, generally only and sodium silicate and sulfuric acid reaction, aging, acid bubble and other processes eventually worth it. The chemical formula of silica gel mSiO2. NH2O, amorphous substances, insoluble in water and any other volume, chemical stability, non-toxic and tasteless, in addition to alkali and hydrofluoric acid, generally do not react with other substances. The chemical and physical properties of silica gel determine the desiccant material of its kind is difficult to replace. Such as: stable chemical properties, strong mechanical properties, good thermal stability, good adsorption.
Silica porous piles are divided into: fine silica gel, B type silicone, macroporous silica gel, coarse silica gel, etc., because their adsorption gap is not the same, so their adsorption characteristics are different. Porous silica gel is for the relatively low humidity conditions, the adsorption capacity is higher than the coarse control regulation, two relatively high humidity environment environment, the characteristics of coarse control system than the characteristics of fine pore silica gel is much better.
Silica Gel Desiccant B-type silica gel is generally between the coarse and small silica gel, the amount of adsorption is also between the two. Loose silica gel is generally used in the catalyst carrier, matting agent, toothpaste abrasive raw materials, according to the specific use of different purposes, for the above silica gel desiccant more detailed use
Silicone desiccant has a strong adsorption capacity, the human skin can produce a dry effect, therefore, the operation should wear a good factory clothes. If the silicone into the eyes, need to use a lot of water to wash, and as soon as possible to seek medical treatment. Silicone desiccant itself is a neutral substance, in addition to strong alkali, strong acid under certain conditions in the reaction, not with any other substances attack. At the same time, silicone is also only certified by the US FDA, with drugs, food directly touch the use of desiccant. The following are the same as the "
Silicone desiccant attack after eating, do not have to be serious. It will not form a damage to the human body, it will not be absorbed by the body. After the onset of eating can drink some milk, so that the silicone desiccant will soon be discharged with the human body feces.
Silicone regeneration
Silica gel in the course of the process, due to adsorption of media in the water vapor or other organic matter, adsorption capacity decreased, can be reused after regeneration.
(1) Silicone adsorption of water vapor after the regeneration.
(2) Silicone adsorption of organic impurities after the regeneration.
(3) silicone regeneration should pay attention to the problem:
Silica Gel Desiccant Drying regeneration should pay attention to grasp the gradual increase in temperature, so as to avoid the strong drying caused by silicon particles burst, reduce the recovery rate.
Silica gel roasting regeneration, the temperature is too high will cause changes in the structure of silicone pores and significantly reduce its adsorption effect, affecting the use of value. For blue plastic indicator or discoloration silica gel, desorption regeneration temperature should not exceed 120 ℃, otherwise it will be due to the gradual oxidation of the developer and lose color. The recycled silica gel should generally be sieved to remove fine particles so that the particles are homogeneous.
