The difference between PP, PES, PTFE and Nylon membrane materials in the filte

　The filter core is a film-centered membrane folding filter. The center rod and end cover of the filter core are made by hot-melt welding technology, without any adhesive, no leakage, no secondary pollution. Depending on the raw material, the folding filter can be divided into PPPleated Filter Cartridge, PTFE Filter Cartridge, PES filter and Nylon Micron Pleated Filter Cartridge.

PP Pleated Filter Cartridge

　　PP Pleated Filter Cartridge, as a relatively accurate, pre-filtered filter material, it can only block relatively large colloids, particulate matter, the effect is to prevent large particles from blocking the terminal filter, to the rear of the terminal filter The effect of maintenance. However, it has strong adsorption performance and large amount of dirt, which is unreachable by PES and PTFE. As a relatively accurate raw material, the pore size generally does not have to be entangled.

　　PTFE Filter Cartridge, generally divided into hydrophilic PTFE and hydrophobic PTFE, hydrophilic filter liquid, hydrophobic filter gas, can be divided into cast film and continuous casting mold according to the casting process design. Based on the four F atomic carbon structures common to polytetrafluoroethylene, this material gives it strong chemical stability, strong acid resistance, strong alkali resistance and organic solvent resistance. The data on PTFE itself is hydrophobic, and the hydrophilic PTFE is treated, so the liquid flux of the hydrophilic PTFE membrane is relatively poor.

　　PES filter, the filter medium is the world's advanced polyethersulfone microporous membrane, polyether sulfone membrane pores account for more than 80% of the pore volume of the membrane, with a common micropore geometry, enhance The filtration efficiency and throughput of a solution with a relatively large filtration difficulty. Polyethersulfone and polypropylene support two materials combined hot melt, no bond, suitable for the chemical and pharmaceutical industries with strict requirements. Main features: common hydrophilic properties, no surfactants and surface lubricants, high filtration accuracy and throughput for filtration solutions, wide pH range, low adsorption capacity for protein and valuable biological agents, retention High rate, excellent chemical resistance and thermal stability, good strength, resistance to positive and reverse pressure shocks.

　　Nylon Micron Pleated Filter Cartridge, the filter medium is a hydrophilic nylon microporous membrane, which is made of nylon and polypropylene support. It is non-adhesive and non-fiber-shed, suitable for chemical and chemical requirements. Pharmaceutical industry. Main characteristics: stable hydrophilicity, strong flexibility, high rejection, excellent chemical resistance, especially suitable for organic solvent filtration. Resistance to forward and reverse pressure shocks.

　　These four folding filter cartridges have excellent chemical compatibility, suitable for filtering strong acid, strong alkali and organic solvent, large membrane filtration area, low pressure difference, strong dirt holding capacity and more effective application life. Users can choose according to their needs. Suitable raw materials.