Aluminum phosphide sustained-release coating treatment method

Abstract

The invention relates to an aluminum phosphide sustained-release coating treatment method. In the production process of aluminum phosphide, after an aluminum phosphide tablet is formed, the aluminum phosphide tablet is put in liquid paraffin for soaking for 20-60 seconds, and the soaked aluminum phosphide tablet is dried and then packaged after being taken out. The quality of liquid paraffin is different, stored grains can be damaged after poor liquid paraffin is used, and thus colorless and tasteless liquid paraffin with high quality needs to be adopted, and residues harm to the health of people cannot be generated after the stored grains are fumigated. By utilizing macromolecular coating treatment, the leakage of hydrogen phosphide molecules is caused, so that the discharging speed of aluminum phosphide in unit time is greatly reduced, the duration time of pesticide effect is prolonged, the killing effect of pests is improved, the safety of workers in a production packaging process is improved, and the intoxicating phenomenon of workers in a aluminium phosphide packaging process is completely eradicated. Through verification of an applicant for many years, the aluminum phosphide sustained-release coating treatment method disclosed by the invention is safe, reliable, good in using effect and free of harmful residues for grains.

Description

technical field [0001] The present invention relates to a method for preparing pesticides and insecticides, in particular to an aluminum phosphide sustained-release coating treatment method. Background technique [0002] Aluminum phosphide is made of red phosphorus and aluminum powder. It is a commonly used pesticide for grain storage. It is widely used because of its high insecticidal efficiency and economic convenience. The content of aluminum phosphide used for granary fumigation is: 56.0% to 58.5%, and there are many specifications of 3.20g / tablet. Fumigation only needs 3 to 7 pieces per ton of grain, and only 1 to 2 pieces per cubic meter. The main toxicity of aluminum phosphide is that it decomposes rapidly when it encounters water and acid, and releases phosphine gas that absorbs quickly and is highly toxic. At present, when aluminum phosphide is used for fumigation, due to the extremely fast decomposition rate of aluminum phosphide, in a closed environment, the eff...

AI Technical Summary

Problems solved by technology

At present, when aluminum phosphide is used for fumigation, due to the extremely fast decomposition rate of aluminum phosphide, the drug effect can generally reach the highest concentration within one to two days in a closed environment, but because the concentration rises too fast, the pests will produce protective coma , but cannot achieve the effect of killing pests

In addition, in the production process of aluminum phosphide, due to the volatile characteristics of aluminum phosphide tablets, workers are also prone to poisoning when packaging. Now in some pharmaceutical factories that produce aluminum phosphide, workers generally wear gas masks Rotational operation is inefficient and prone to danger. However, in the prior art, there is no way to solve the problem of fast release of aluminum phosphide. Generally, when aluminum phosphide is used for fumigation, it can only be used in spraying equipment or various phosphorus Measures are taken on aluminum packaging, but its slow-release effect is not satisfactory