With the development of science and technology, some filter materials are emerging one after another. There are many filter materials on the market now, and ptfe high-efficiency filter paper is one of them.
The design of filter paper must make every effort to strike a balance among various indicators to effectively protect the system that needs to be filtered.
The oil filter has higher requirements for filter paper than the air filter, mainly because under severe temperature changes, the concentration of the engine oil also changes accordingly, which will affect the filtration flow rate of the engine oil.
PTFE high-efficiency filter paper refers to a microporous film made of polytetrafluoroethylene as raw material, using special processing technology, and processed by calendering, extrusion, and biaxial stretching.
This kind of membrane has excellent breathability, corrosion resistance, aging resistance, high temperature resistance and other properties.
According to the usage requirements, the pore diameter can be between 0.1-10um, the thickness can be between 2-100um, the porosity can reach 50%–80%, there are up to hundreds of millions of micropores per square centimeter, and the filtration level can reach H13 -U16, can operate at a continuous operating temperature of 240°C and an instantaneous temperature of 260°C.
PTFE high-efficiency filter paper is prepared using unique biaxial stretching technology, which can ensure complete retention of bacteria and other impurities while having a large flux.
The material is resistant to high temperatures, strong acids and alkali, and has wide chemical applicability. When used for gas filtration, it can achieve 100% retention of various phages, bacteria and particles above 0.02um.
PTFE microporous membrane has high filtration efficiency and can meet the filtration efficiency level requirements of sub-high efficiency, high efficiency and ultra high efficiency air filters.