Electrostatic filter cotton with improved performance and preparation method and application thereof

Abstract

The invention discloses electrostatic filter cotton with improved performance and a preparation method and application thereof, and belongs to the technical field of air filter materials of heating ventilation and air conditioning. The preparation method comprises the following steps: preparing unwound electrostatic filter cotton; preparing hot pressed electrostatic filter cotton; preparing the electrostatic filter cotton of which one side is coated with hot melt adhesive wires; preparing the electrostatic filter cotton coated with the hot melt adhesive wires on two sides or the electrostaticfilter cotton coated with multiple layers of hot melt adhesive wires on one side; and packaging finished products. The invention further discloses the electrostatic filter cotton with the improved performance and the application of the electrostatic filter cotton. The electrostatic filter cotton with the improved performance has the following advantages that the electrostatic filter cotton has a compact surface structure, large-particle dust can be effectively prevented from entering the filter cotton and quickly formed into a filter cake on the surface and thus is convenient to remove, the service life can be effectively prolonged; the filtering efficiency is effectively improved on the basis of approximate gram weight; and under the same filtering efficiency, the filter material has lower gram weight, and thus the material cost is greatly saved.

Description

technical field [0001] The invention relates to an electrostatic filter cotton with improved performance, a preparation method and application thereof, and belongs to the technical field of HVAC air filter materials. Background technique [0002] Due to natural processes and human production activities, all kinds of dust pollutants enter the atmosphere and form stable aerosols, which are also the culprits that have caused smog in recent years. Suspended particulate matter in the atmosphere mainly includes liquid and solid particles generated directly and indirectly. There are three main sources: one is fine particles released directly into the air by various pollution sources, including smoke, dust, flying dust, oil fume, oil mist, Pollen, volcanic ash, etc.; the second is the chemically active gaseous pollutants that react after being discharged into the atmosphere to generate, adsorb, and condense into fine particles. These active gaseous pollutants include SO 2 , NOx, am...

AI Technical Summary

Problems solved by technology

[0009] While there are advantages, the existing electrostatic filter cotton also has some disadvantages, which limit their wide range of applications, mainly as follows:

[0010] (1) The surface structure is relatively loose. When filtering dust in the air, larger particles will directly enter the interior of the filter cotton. When the wind speed is high or the dust accumulates a lot, it is easy to fall off and cause secondary pollution.

[0011] (2) Filtration efficiency increases slowly with gram weight, such as a certain brand 90g / m 2 The product has a filtration efficiency of 96%, and to achieve a filtration efficiency of more than 99%, the product weight must be increased to at least 200g / m 2 The above is even higher. In this way, not only the material cost is greatly increased, but also the use is affected in many fields due to the increase in thickness;

[0012] (3) More expensive cost. Due to the pressure of raw material cost and manufacturing difficulty, the price of the existing electrostatic filter cotton is usually above 200 yuan / kg, especially for the working conditions with high filtration efficiency requirements, the use cost of electrostatic filter cotton great pressure

[0013] To sum up, even though the electrostatic filter cotton in the prior art has the advantage of extremely high filtration efficiency / resistance ratio compared with other filter materials, its expensive price and loose surface structure greatly limit its application in the field of HVAC air purification. application

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