Nematicide microcapsule and preparation method thereof
A nematicide and microcapsule technology, which is applied in the field of nematicide microcapsules and its preparation, can solve the problem that decomposition products have incomplete biological activity, limit the utilization rate and efficacy of nematicides, harm humans, animals and soil beneficial organisms, etc. It can reduce the number and frequency of pesticide application, save the amount of pesticides, and save the cost of prevention and control.
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Embodiment 1
[0027] 1) Weigh 0.20g of the nematocide original drug, dissolve it in 6.00g of dichloromethane, stir until the original drug is completely dissolved, then add 0.25g of ethyl cellulose into the solution, stir until the ethyl cellulose is completely dissolved, and prepare into a clear solution A containing nematocide and ethylcellulose;
[0028] 2) Weigh 12.75g of deionized water into a beaker, add 0.80g of emulsifier EL-40, and then magnetically stir until the emulsifier is completely dissolved to make a transparent solution B containing emulsifier;
[0029] 3) Mix the transparent solution A obtained in step 1) with the transparent solution B obtained in step 2), and cut at high speed (10000 rpm) for 4 minutes with a high-speed shearing machine to obtain an emulsion;
[0030] 4) removing dichloromethane from the emulsion obtained in step 3) by a rotary evaporator at 40° C. to obtain a suspension containing microspheres;
[0031] 5) The microsphere-containing suspension obtaine...
Embodiment 2
[0033] 1) Weigh 0.20g of the nematocide original drug, dissolve it in 5.00g of dichloromethane, stir until the original drug is completely dissolved, then add 0.15g of ethyl cellulose into the solution, stir until the ethyl cellulose is completely dissolved, and prepare into a clear solution A containing nematocide and ethylcellulose;
[0034] 2) Weigh 13.85g of deionized water into a beaker, add 0.80g of emulsifier EL-40, and then magnetically stir until the emulsifier is completely dissolved to make a transparent solution B containing emulsifier;
[0035] 3) Mix the transparent solution A obtained in step 1) with the transparent solution B obtained in step 2), and cut at high speed (10000 rpm) for 6 minutes with a high-speed shearing machine to obtain an emulsion;
[0036] 4) removing dichloromethane from the emulsion obtained in step 3) by a rotary evaporator at 40° C. to obtain a suspension containing microspheres;
[0037] 5) The microsphere-containing suspension obtaine...
Embodiment 3
[0039] 1) Weigh 0.20g of nematocide original drug, dissolve it in 4.00g of dichloromethane, stir until the original drug is completely dissolved, then add 0.15g of ethyl cellulose to the solution, stir until the ethyl cellulose is completely dissolved, and prepare into a clear solution A containing nematocide and ethylcellulose;
[0040] 2) Weigh 15.25g of deionized water into a beaker, add 0.40g of emulsifier EL-40, and then magnetically stir until the emulsifier is completely dissolved to make a transparent solution B containing emulsifier;
[0041] 3) Mix the transparent solution A obtained in step 1) with the transparent solution B obtained in step 2), and cut at high speed (10000 rpm) for 4 minutes with a high-speed shearing machine to obtain an emulsion;
[0042] 4) removing dichloromethane from the emulsion obtained in step 3) by a rotary evaporator at 40° C. to obtain a suspension containing microspheres;
[0043] 5) The suspension obtained in step 4) is filtered, was...
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