Note that the sealed pesticide is volatile and invalid, causing air pollution. The cap must be tightened during storage to seal.
Pay attention to maintaining proper temperature. Most powder pesticides are susceptible to high quality at high temperatures. The higher the temperature, the easier the pesticide will melt, decompose, volatilize, and even burn and explode. Some emulsion pesticides will also destroy their emulsification performance and reduce the efficacy after encountering high temperature. Therefore, it is not advisable to preserve pesticides at high temperatures. Some bottled liquid pesticides will freeze when they encounter low temperature, form a block, or cause the bottle to burst. Keep the indoor temperature above 1 °C when storing such pesticides.
Attention to avoid light Some pesticides are afraid of light, and long-term exposure to light will cause decomposition and deterioration of pesticides, so avoid glare and sunlight during storage.
Note that it is easy to absorb moisture and agglomerate by keeping dry powder pesticides and plant conditioners. Therefore, the place where the pesticides are stored should be kept dry to prevent rain and snow. Also leave a window for ventilation and keep the humidity below 75%.
Avoid mixing pesticides into alkaline, acidic and neutral. Alkaline pesticides include enemy scorpion, stone sulphur mixture, Bordeaux mixture, etc.; acidic pesticides include deltamethrin; neutral pesticides include gram sputum. These three different types of pesticides should be stored separately during storage and storage, and the distance should be kept above 0.5 meters. Otherwise, the pesticides will be deteriorated.
It is strictly forbidden to mix two kinds of pesticides that have not been used up in the current year, and cannot be mixed in one bottle to avoid failure.
Paper dyeing process, the object is to dye the role of paper fibers. Mechanism of different Dyes with different pulp, wood is known as basic dyes great affinity, suitable for dyeing pulp lignin content; pulp surface with a strong negative charge, then the Direct Dyes hardly adsorbed ions , with it to reduce the surface charge, the dye near the fiber surface is fixed. Such non-electrostatic adsorption caused, bauxite is commonly used in papermaking dye retention agent, because the majority of paper dyes are anionic, cationic aluminum compound and anionic dye-forming cation may be precipitated and adsorbed on the fiber surface which is to retain this mechanism occurs at pH 4.0-5.2, then the charge density of the aluminum ions is high, the charge is stronger.
Dyes commonly used in the paper coating colored paper, the dye and the paper fibers by covalent bond, ionic bond between, with the key, and molecular hydrogen binding forces, which depends on the color fastness of adhesion strength, exactly in what based combination, depending on the structure of the dye molecule.
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Paper Dyes, Paper Dyes Applications, Paper Dyes Industries
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