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What are the materials for the filter media of HEPA filter?
What are the materials for the filter media of HEPA filter?High-efficiency air filters are commonly used in the air conditioning end exhaust of clean workshops in the manufacturing industries such as electro-optical and electronic devices, biotechnology, instrumentation, beverages and food, etc. The industry of high-efficiency filters generally involves industries with high requirements for cleanliness, so what are the high-efficiency filter materials?1. HEPA grade filter paper: HEPA filter paper is the core component of a high-temperature high-efficiency air filter, this filter material has a high filtration accuracy, mainly used to capture dust particles in air particle sizes of 0.5 microns or more particles and a variety of suspended substances, mainly made of ultra-fine glass fibers, for particle size of 0.3 microns or more impurities, the removal efficiency can reach about 99%. Dust particles in the air move with the airflow, and when they meet the HEPA filter, the airflow will pass through the filter, and the dust impurities will be intercepted by the filter. Therefore, this HEPA filter paper is also the most commonly used in high-efficiency filters. 2. Activated carbon: activated carbon is a special filter material, although the filtration precision is not very high, but can effectively absorb odors or harmful gases in the air. It is usually made of coconut shell, fruit shell, or coal after high-temperature activation, and the activated carbon material will form a complex and dense pore structure, to obtain a good adsorption capacity. The activated carbon filter in the high-temperature high-efficiency air filter will firmly adsorb the harmful gas molecules in the air during the purification process, and then under the attraction of intermolecular force, more and more harmful gas molecules will enter into the filter until the void structure is filled. Activated carbon high-efficiency filters can effectively remove high concentrations of acid, alkali, and organic compounds in the air and all kinds of harmful gases in the air. |
