The sprayed pesticide is the balance liquid that has been added with water and water (except for ultra-low volume spray), and the risk of poisoning has been reduced. However, special attention should be paid to personal protection when spraying pesticides. Protective clothing should be worn when spraying high-toxic pesticides. Because of the high toxicity of pesticides, the mist may spread to the operator and there may be danger of pollution poisoning, especially the special sensitive parts such as nose, eyes and mouth. Protect it. The problem of drug droplets that occur during spraying must also be noted. There are still a large number of hand-held hand sprayers in China. Many parts of the sprayer are prone to leakage of liquid medicine, especially the handles, switches, liquid tank covers, etc., and the top of the pump cylinder is also prone to water leakage. In addition, the interface of each part is also prone to water leakage due to gasket damage. These water seepage and water leakage make the human body easily accessible to the liquid. Because the amount of water leakage is relatively large, the risk of penetrating protective clothing is relatively large, and special care must be taken. The spray device must be carefully inspected before use to ensure that no leakage of the drug will occur. The operator should spray the liquid from the upwind of the farmland. Soap and water must be prepared for cleaning at the application site.
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High temperature resistant glass ceramic high temperature resistant glass ceramics is a new material developed with the application of new processes such as sintering and sol-gel methods in the preparation of glass ceramics. When high temperature resistant crystals such as mullite, spinel, garnet are precipitated in the glass ceramic and the content is high, the material can withstand high temperatures. For example, in the garnet glass ceramic, not only the high temperature resistant crystallites but also some mullite crystals are precipitated, and the residual glass phase is surrounded by crystals, which can be used at a high temperature of about 1400 °C.
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