What are the differences between PTFE high efficiency filter and glass fiber high efficiency filter?
PTFE has the characteristics of high temperature resistance, its friction coefficient is extremely low, it has the characteristics of high efficiency, low pressure loss, large dust capacity, tough filter paper, good sealing, compact structure, convenient installation, low resistance, low operating cost, long service life, etc.
The glass fiber filter is made of glass fiber filter paper. Glass fiber is a kind of inorganic non-metallic material with excellent performance. It has a wide variety of advantages, such as good insulation, strong heat resistance, good corrosion resistance and high mechanical strength, but its disadvantages are brittle and poor wear resistance.
By comparing the resistance performance and filtration performance of PTFE high efficiency filter and glass fiber high efficiency filter, the application prospects of different high efficiency filters are discussed.
According to the experimentalmeasurement data of the high efficiency filter, the relationship between the average wind speed of two different glass fiber filters and the filter differential pressure of the PTFE filter is obtained. With the increase of the wind speed, the resistance of the high efficiency filter increases linearly from low to high, and the two straight lines obtained by the two glass fiber filters basically coincide. It is easy to see that when the filtering wind speed is 1m/s, the resistance of the glass fiber filter is about four times that of the PTFE filter. Therefore, wind speed is a very important factor affecting the filtering effect of HEPA filter. The higher the wind speed, the lower the filtering efficiency. This effect is more obvious forPTFE HEPA filter. In general, thefiltering effect of PTFE HEPA filteris worse than that of glass fiber HEPA filter, but its resistance is lower than that of glass fiber HEPA filter. Therefore, PTFE filter material is more suitable for making coarse or sub high efficiency HEPA filter, The glass fiber filter material is more suitable for making high efficiency or ultra high efficiency filters.
Specifications under the same number of faces 610 × six hundred and ten × Resistance ratio specification of 150mm glass fiber high efficiency filter 610 × six hundred and ten × 90mm high efficiency glass fiber filter is low, and its filtration performance is 610 × six hundred and ten × 90mm high efficiency glass fiber filter is good. At present, the price of pure PTFE filter material is higher than that of glass fiber, but compared with glass fiber, PTFE has better temperature resistance, corrosion resistance and hydrolysis performance than that of glass fiber high efficiency filter. Therefore, various factors should be comprehensively considered when producing high efficiency filter, giving consideration to both technical performance and economic performance. The best is the right one.