The PTFE air filter membrane is a three-dimensional mesh structure with no through holes.
The porosity and pore size distribution are important indicators for measuring polytetrafluoroethylene membranes.
The porosity of PTFE air filter membrane is generally between 80% and 95%.
High porosity will increase ventilation; the pore size distribution is concentrated, indicating that the membrane pore size is uniform.
With special production technology, different pore sizes can be controlled for different materials to achieve high-efficiency filtration.
Usually membrane thickness is not an indicator for evaluating filtration membranes. If the membrane thickness is too thick, it will easily cause problems such as low air permeability and high operating pressure.
According to years of research and observation, film thickness basically does not affect the service life. The key is the composite strength, which is an important factor affecting the service life.
1. The smoke and dust emission rate is close to zero, and the dust removal efficiency can reach more than 99.99%.
The minimum pore size of the film can reach 0.3um, which can capture most solid particles and liquid droplets.
2. Due to thorough dust cleaning, the filtration time can be extended, the dust cleaning cycle can be extended, and the number of dust cleanings can be reduced, resulting in less equipment wear and less maintenance.
3. The dust layer formed by filtration is easy to split, and the filter material has good air permeability.
The pre-coated filter material relies on a thin film to capture dust particles, and the dust layer can only form on the outside of the filter material film. The PTFE air filter membrane is hydrophobic, and the adhesion between the dust layer and the filter material is small, making it easy to split. , it can fall off by its own weight without external force.
If it is blown back, it can be completely removed. If an antistatic polytetrafluoroethylene film is used, the dust will be easier to peel off and the dust will be cleaned more thoroughly.
4. Wide applicability.
PTFE membrane has stable chemical properties, high temperature resistance, corrosion resistance, water repellency, oleophobicity, etc.
Therefore, it also has good filterability for special gases with high temperature, high humidity, high corrosion and organic liquids.
So this filter material is widely used in metallurgy, chemical industry, coal, cement and other industries.
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