Preparation process of mildew-proof and antibacterial desiccant bag
A preparation process, anti-mildew and anti-bacterial technology, applied in the field of preparation of anti-mildew and antibacterial drying bags, can solve the problems of uneven dispersion, influence on antibacterial effect, and easy breeding of bacteria by antibacterial masterbatch and antibacterial powder, so as to improve the antibacterial performance, improve the Antibacterial effect, effect of increasing load
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Embodiment 1
[0020] The concrete preparation process of polysulfur nitrogen epoxy binder powder is as follows:
[0021] Step 1: Weigh 6g of urea and 30mL of water into the reaction vessel at the same time, stir and dissolve, add 27.6g of 2,5-dihydroxybenzaldehyde to it, then raise the temperature to 50-55°C and stir for 2-3h, solids precipitate out, then Filtering, washing and drying to obtain polyphenolic compounds;
[0022] Step 2, add 28.6g of the polyphenolic compound prepared in step 1 to 300mL of acetic acid solution, add 10.5g of ethanedithiol to it at the same time, then raise the temperature to 65-70°C for reflux reaction for 15-16h, and then carry out the obtained product Distillation under reduced pressure removes solvent and unreacted ethanedithiol wherein, obtains light yellow solid powder, the solid powder that obtains is successively in the concentration of 1% sodium carbonate solution and ethanol and is easy to wash to dry after neutrality, Obtain nitrogen sulfurized polyp...
Embodiment 2
[0025] The specific preparation process of polynitrogen epoxy adhesive powder is as follows:
[0026] Step 1: Weigh 6g of urea and 30mL of water into the reaction vessel at the same time, stir and dissolve, add 27.6g of 2,5-dihydroxybenzaldehyde to it, then raise the temperature to 50-55°C and stir for 2-3h, solids precipitate out, then Filtering, washing and drying to obtain polyphenolic compounds;
[0027] Step 2: Add 10 g of the polyphenolic compound prepared in Step 1 to 120 mL of acetone solution, and at the same time add 11.2 g of epichlorohydrin to it, heat up to 90-100 ° C, and then add 2.3 g of 50% polyphenolic compound to the reaction vessel Sodium hydroxide solution, reflux at constant temperature and stir for 10 hours, then distill off the solvent under reduced pressure, add the obtained product into acetone, stir and mix, then recrystallize to obtain polynitrogen epoxy adhesive powder.
Embodiment 3
[0029] A preparation process of an anti-mildew and anti-bacterial drying package, the specific preparation process is as follows:
[0030] In the first step, configure 100 mL of silver nitrate solution with a concentration of 500 mg / L, then add 10 g of the polysulfur nitrogen epoxy adhesive powder prepared in Example 1, shake at a constant temperature of 40 ° C for 10-12 h, and then filter. Obtain silver-loaded binder powder;
[0031]In the second step, 10 g of the silver-loaded binder powder prepared in the first step was weighed and added to 100 mL of water, stirred and dissolved, and 2.3 g of sulfapyridazine sodium was added thereto, the temperature was raised to 60 ° C, and 12 g of molten paraffin was added thereto, After stirring and mixing for 3 minutes, add 30g of dry masterbatch to it immediately, filter after 3min after stirring and mixing, and bake the solid obtained after filtration at 45°C for 10-12h, at this time, the surface of dry masterbatch is dry, and then ba...
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