Environment-friendly biological water-retention fire-extinguishing agent
A fire-extinguishing agent and environment-friendly technology, applied in the field of environmentally-friendly biological water-retaining fire-extinguishing agents, can solve the problems of the fire-extinguishing agent being difficult to clean and block the pipes, and achieve the effects of preventing forest fires, being easy to clean, and overcoming the difficulty of cleaning.
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preparation example 1
[0017] Preparation Example 1 Preparation of partially crosslinked water-swellable sodium acrylate-acrylic acid copolymer
[0018] Weigh 35.6 g of acrylic acid and put it into a container with stirring, thermometer and ice-water bath. Weigh 14.9 g of 30% sodium hydroxide, add 49.5 g of deionized water to adjust the content of sodium hydroxide to 20%, and transfer it to the dropping funnel. Start stirring, slowly add sodium hydroxide solution dropwise, control the neutralization reaction temperature below 30°C, add crosslinking agent N,N'-methylenebisacrylamide 0.002g, photoinitiator benzoin after completion of neutralization reaction Isopropyl ether 0.015g. Nitrogen for 45 minutes, put into a transparent container, and seal it for later use.
[0019] Put the material liquid in the transparent container under the ultraviolet lamp, adjust the distance so that the light intensity of the ultraviolet lamp is 3000μw / cm 2 , irradiated for 12 hours, the polymerization reaction was c...
preparation example 2
[0021] Preparation Example 2 Preparation of partially crosslinked water-swellable potassium acrylate-acrylic acid copolymer
[0022] Weigh 31.7 g of acrylic acid and put it into a container with stirring, thermometer and ice-water bath. Weigh 15.4 g of 30% potassium hydroxide, add 52.9 g of deionized water to make the content of potassium hydroxide 20%, and transfer it to the dropping funnel. Start stirring, slowly add potassium hydroxide solution dropwise, control the neutralization reaction temperature below 30°C, add 0.002g of crosslinking agent hydroxypropyl acrylate and 0.004g of photoinitiator benzoin isopropyl ether after the neutralization reaction is completed. Nitrogen for 45 minutes, put into a transparent container, and seal it for later use.
[0023] Put the material liquid in the transparent container under the ultraviolet lamp, adjust the distance so that the light intensity of the ultraviolet lamp is 5000μw / cm 2 , irradiated for 6h, the polymerization reactio...
preparation example 3
[0025] The cultivation of preparation example 3 Bacillus subtilis
[0026] Smear the isolated strains on the potato dextrose agar plate medium (Potato Dextrose Agar, PDA; 200 g of potato, 10 g of agar, 20 g of water, 1000 ml) by drawing a line on the plate, and culture them in an incubator at 30° C. for 3 to 4 days. Regularly cultivate updates.
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