EF-Materials Industries Inc.:Hydrophilic & Hydrophobic modification

Posted by:info On 2022-01-24
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EFM® provides both hydrophilic and hydrophobic PTFE products according to the customers’ needs through either traditional chemical surface etching or advanced hydrophilic technology.

<Hydrophobic ePTFE membrane technology and application>
PTFE porous membrane filtration products are made of natural permanent hydrophobic PTFE material. The number of pores, the size of pores, and the volume of pores in its excellent 3D network structure can be tuned and controlled by a special stretching production process. The pore size of ePTFE is 0.05um to 10um, which can be customized according to customer needs. The hydrophobicity, interwoven fibres, and a number of 5 billion pores of ePTFE can block liquid water droplets but allow cleaning gas to pass through, thereby achieving solid-gas separation. Our high water pressure resistance products can also be used in seawater desalination projects, allowing clean water vapour without salt molecules to pass through and blocking liquid seawater. This is a liquid-gas separation technology.
In the face of various severe challenges, our company continues to refine the adjustment of the film stretching process, so that the hydrophobic membrane filter material products can meet the requirements of differential pressure and high filtration efficiency even in the face of different intake pressures. Our company can provide various PTFE filter membranes, and can be compounded with various base cloth materials according to customer needs to make various air filtration products, such as masks, cleanroom air filtration modules (HEPA, ULPA), air filtration materials, Environmental pollutant detection materials (can be used for analysis: chlorine, bromine, PM2.5, dust, formaldehyde, benzene, xylene and other harmful substances), air filter materials in the semiconductor and microelectronics industries, sensor protection covers for kidney dialysis, smoke filter etc.

<Hydrophilic ePTFE membrane technology and application>
The hydrophilic ePTFE membrane is obtained by modifying the hydrophobic membrane through a special method. Our company can make the hydrophilized ePTFE membrane have highly excellent corrosion resistance, high flow rate and other characteristics, which can be widely used in various filtration needs, such as Industrial wastewater, laboratory drugs, semiconductor cutting fluid, aquaculture and fishery, food processing, livestock wastewater, etc. The pore grade of the hydrophilic ePTFE film is 0.05um to 10um, which can be customized according to customer needs. The ePTFE layered interlaced fibres and the number of pores up to 5 billion can block microorganisms, bacteria, and solid substances in the liquid and allow clean liquid to pass through, so as to achieve the effect of solid-liquid separation.
In the face of various severe challenges, our company has continuously improved the effectiveness of the hydrophilic process, so that the hydrophilic membrane filter material products can meet the high flow and high filtration effect even in the face of different liquids. Our company can provide a variety of PTFE hydrophilic membranes, and can be laminated with various base fabric materials according to customer needs to make various liquid filtration products, such as pleated filter element, flat membrane bioreactor (MBR), needle filter, laboratory filter.