A kind of fire extinguishing material and preparation method thereof
A technology of fire extinguishing material and fire extinguishing agent, which is applied in the direction of fire prevention equipment, etc., and can solve the problems that cannot be released automatically
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Embodiment 1
[0024] The preparation method of the cyclodextrin vesicles of this embodiment is: add 10 g of sodium lauryl sulfate and 10 g of alkylphenol polyoxyethylene ether (OP-10 ), followed by adding 500g of vinyl acetate. After stirring evenly, the temperature was raised to 60° C., and an aqueous solution containing 1 g of azobisisobutyronitrile and 10 g of ammonium persulfate was added. The temperature was raised to 90° C., and after heating and reacting for 6 hours, a cyclodextrin vesicle emulsion was obtained.
[0025] Under the action of peroxide (ammonium persulfate), polyhydroxy cyclodextrin can easily form oxygen free radicals, which can only be used for vinyl acetate containing double bonds to initiate free radical polymerization. Azobisisobutyronitrile acts to promote polymerization. In order to make the reaction uniform and form a microemulsion, the surfactant alkylphenol polyoxyethylene ether and sodium lauryl sulfate are added during the reaction, so that the hydrophobic...
Embodiment 2
[0028] The preparation method of the cyclodextrin vesicle of this embodiment is: add 10 g sodium dodecylbenzenesulfonate sulfate, 10 g fatty alcohol polyoxyethylene ether and 50 g N-methylolacrylamide, followed by 500 g of acrylic acid. After stirring evenly, the temperature was raised to 60° C., and an aqueous solution containing 1 g of tert-amyl peroxy 2-ethylhexyl acid and 12 g of potassium persulfate was added. The temperature was raised to 80° C., and after heating and reacting for 8 hours, a cyclodextrin vesicle emulsion was obtained.
Embodiment 3
[0030] The preparation method of the cyclodextrin vesicles of this example is: add 10 g of polyoxyethylene sorbitan monooleate and 10 g of alkylphenol polyoxyethylene ether to a cyclodextrin aqueous solution with a volume of 1 L and a concentration of 0.20 kg / L , followed by the addition of 400 g of acrylic acid and 300 g of methacrylic acid. After stirring evenly, the temperature was raised to 60° C., and an aqueous solution containing 1.5 g of azobisisobutylamidine hydrochloride and 10 g of ammonium persulfate was added. The temperature was raised to 80° C., and after heating and reacting for 5 hours, a cyclodextrin vesicle emulsion was obtained.
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