Functional smoke agent for hot fogging machine and preparation method thereof

Abstract

The invention discloses a functional smoke agent for a hot fogging machine and a preparation method thereof. The functional smoke agent for the hot fogging machine comprises the following raw material components in percentage by weight: 2 to 40 percent of surface active agent, 1 to 20 percent of hot fog density regulator, 1 to 10 percent of anti-combustion agent, 1 to 10 percent of antifreeze agent, 0.1 to 10 percent of defoaming agent and the balance of water. The raw material components are mixed to obtain a water phase, then an insoluble substance is inducted into the water phase to solubilize, the mixture is stirred continuously, and the product is filtered to remove few residues to obtain the finished product. The invention effectively provides prevention safety, preventing effect and preventing operation efficiency of the heat fogging machine, increases adaptability of the hot fogging machine for different dosage forms of commercial pesticides, enlarges the range of the type of prevention crops of the hot fogging machine and solves the application problems of the hot fogging machine onto the middle and short stalk crops such as corns, wheat and the like.

Description

technical field [0001] The invention relates to the field of high-efficiency dispersion of pesticides, in particular to a functionalized fuming agent for a heat fog machine and a preparation method thereof. Background technique [0002] The working principle of the hot fog machine currently on the market is: through the combustion of fuel to generate high-temperature and high-pressure airflow to vaporize the pesticide and the pesticide carrier, when the vaporized product sprays out of the nozzle and enters the atmosphere, it cools down sharply and liquefies or solidifies rapidly into a micron level Particles, and form aerosols with the air. When the plant layer diffuses and encounters plants, the drug-containing aerosols deposit and orderly attach to the surfaces of plant leaves, stems, etc., so as to achieve the purpose of preventing and controlling plant diseases and insect pests. [0003] There are many advantages of using hot fog machine for spraying: one is high operati...

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Problems solved by technology

[0004] However, the fumigants commonly used in the market or the pesticides that can be applied by hot fog machines have serious defects in three aspects: First, due to the low density of the sprayed hot fog without special treatment, it is easy to diffuse into the upper layer and enter the atmosphere. It is also easy to drift with the wind, resulting in a decline in the control effect and environmental pollution. It is usually only suitable for tall plants such as forest pest control, or only suitable for relatively closed spaces such as warehouses, greenhouses and other places; Toxic fuming agents are motor oil, rapeseed oil, etc. They have poor compatibility or incompatibility with most of the pesticides commonly used in the market at present, and the prepared drug-containing liquid is a heterogeneous multiphase body or even a layered liquid , it is difficult for them to ensure that the formed hot fog is an aerosol with uniform drug content, resulting in poor control effect and prone to phytotoxicity, so most of the pesticides currently on the market cannot be directly applied by hot fog machines; the third At present, most of the liquid pesticide preparations on the market are composed of a large number of low-boiling surfactants and solvents. When used directly with a hot fog machine, these solvents and surfactants are easy to catch fire when heated. When used for forest pest control There is a big risk, and at the same time, due to the further increase of temperature due to combustion, the active ingredients are easy to decompose and fail, and the surfactant itself is also burned and consumed, so that the proper control effect cannot be achieved, and secondary environmental pollution is caused.

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