A kind of chlorine dioxide disinfection gel and preparation method thereof
A technology of disinfecting gel and chlorine dioxide, applied in chemical instruments and methods, botanical equipment and methods, disinfection and other directions, can solve problems such as being difficult to degrade the environment and polymer materials, and increasing the difficulty of preservation.
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[0025] The following will be combined with figure 1 The present invention is described in detail, the present invention proposes a kind of preparation method of chlorine dioxide disinfection gel, comprises the following steps:
[0026] Step S1: Prepare a mixed solution of 95 to 100 parts of tetraethyl orthosilicate, 3 to 6 parts of methyltriethoxysilane and 15 to 30 parts of hydrochloric acid in parts by mass, and hydrolyze while stirring. After hydrolysis, there will be by-product ethanol generated, and a clear solution was obtained;
[0027] Step S2: Add 5-10 parts of chelating agent and 0.5-5 parts of slow-release agent into the clear solution, and continue stirring for 30 minutes to obtain a reaction solution;
[0028] Step S3: At a temperature of 40-50° C., the ethanol is partially extracted by vacuum distillation to obtain a sol solution;
[0029] Step S4: Add 1-10 parts of stabilizer and 1-10 parts of chlorite to the sol solution, and continue stirring to obtain a sol...
Embodiment 1
[0040] A preparation method for chlorine dioxide disinfection gel, comprising the following steps:
[0041] (1) Take 100 parts of tetraethyl orthosilicate, 4 parts of methyltriethoxysilane, add 20 parts of hydrochloric acid with a substance concentration of 0.17M to form a mixed solution, and carry out hydrolysis reaction while stirring, when orthosilicic acid When the hydrolysis of tetraethyl ester was completed, a clear solution was obtained and by-product ethanol was generated;
[0042] (2) Add 10 parts of 0.1M disodium edetate and 4 parts of polyethylene glycol into the clear solution, and continue stirring for 30 minutes to obtain a reaction solution;
[0043] (3) At 40°C, the by-product ethanol, which accounts for 30-40%, 40-50%, 50-60%, and 60-70% of the mass of the reaction solution, is respectively extracted by vacuum distillation, and parallel experiments are carried out to obtain the sol liquid;
[0044] (4) In the sol solution, add 1 part of magnesium sulfate and...
Embodiment 2
[0051] The difference between this example and Example 1 is that different amounts of sodium hydroxide are added to control the pH value to 2-3, 3-4, 4-5, 5-6, and the remaining steps are unchanged, and parallel experiments are carried out. The influence of different pH values on the curing time of chlorine dioxide gel was tested.
[0052] The influence of table 2 different pH values on the solidification time of chlorine dioxide gel
[0053] pH value Chlorine dioxide gel curing time 2～3 about 5h 3～4 about 3h 4～5 6~10min 5～6 fast curing
[0054] As can be known from the experimental results in Table 2, different pH values have a greater impact on the solidification time of the chlorine dioxide gel. When the pH value of the sol mixture ranges between 2 and 4, the chlorine dioxide gel solidification The curing time is about 3 to 5 hours, and the curing time is too long; when the pH value range of the sol mixture is between 4 and 5, ...
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