Double-solid slow-release air purifying agent
An air purifier and slow-release technology, which is applied to gasification substances, biocides, disinfectants, etc., can solve the problems of slow reaction start and unstable chlorine dioxide release, and achieve stable product performance and controllable release flux. , the effect of simple preparation process
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Embodiment 1
[0033] (1) Take 1 part of sodium carbonate, 12 parts of sodium chlorite, and 1 part of sodium sulfate, add 72 parts of water to dissolve, add dropwise α-naphtholphthalein indicator to turn red, and then add 10 parts of polyethylene glycol to prepare gel;
[0034] (2) 2 parts of dried calcium chloride, 2 parts of calcium oxide, 2 parts of sodium dihydrogen phosphate and 2 parts of sodium bicarbonate are mixed evenly, sealed and packaged into an auxiliary material bag;
[0035] (3) Unseal the auxiliary material package during use, then pour out the contents of the auxiliary material package and cover the gel, and the two types of materials react to release chlorine dioxide, which is stably and slowly released in the gel. The sustained release rate of 100g of air purifier is 15-20mg / h, and gradually becomes colorless, indicating that the reaction of raw materials is completed.
Embodiment 2
[0037] (1) Take 1 part of sodium carbonate, 10 parts of sodium chlorite, and 1 part of magnesium sulfate, add 72 parts of water to dissolve, add dropwise bromothymol blue indicator to become blue, and then add 8 parts of sodium polyacrylate to prepare get the gel;
[0038] (2) 2 parts of dried calcium chloride, 2 parts of calcium oxide, 2 parts of sodium dihydrogen phosphate and 2 parts of sodium bicarbonate are mixed evenly, sealed and packaged into an auxiliary material bag;
[0039] (3) Unseal the auxiliary material package during use, then pour out the contents of the auxiliary material package and cover the gel, and the two types of materials react to release chlorine dioxide, which is stably and slowly released in the gel. The sustained release rate of 100g air purifier is 14-16mg / h, and the blue color gradually turns yellow, indicating that the raw material reaction is complete.
Embodiment 3
[0041] Compared with Example 1, most of them are the same, except that in this example, polyethylene glycol is changed to polyvinyl alcohol.
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