Memsep Produces High-Quality Positively Charged Nylon 66 Pleated Cartridges

Positively charged nylon 66 filter membranes utilize high-strength nylon 66 as the base material, imparting positive charge properties through specialized surface modification processes. They serve as the core filtration material for precisely retaining negatively charged particles, with their key characteristics centered on three aspects: electrostatic interaction, filtration performance, and applicable scenarios.

Its most significant advantage lies in its potent electrostatic adsorption capability. The positive charge on the membrane surface actively captures negatively charged impurities in fluids—such as bacteria, colloids, proteins, and minute particulates—via Coulombic attraction. This enables efficient retention even when impurity particle sizes are smaller than the membrane pore size, overcoming the limitations of traditional sieve filtration. Filtration efficiency surpasses that of standard nylon membranes by over 30%.

Physically, this membrane combines excellent solvent resistance with mechanical strength. It withstands most organic solvents (e.g., ethanol, methanol) and acidic/alkaline environments (pH 3-10) without brittleness or swelling. It maintains stable flux across common pore sizes of 0.2-0.45 microns and exhibits good heat resistance, It withstands 121°C high-pressure steam sterilization, meeting reusable requirements.

Additionally, its smooth surface and moderate hydrophilicity minimize membrane fouling from solute adsorption. It exhibits high flux recovery after cleaning, making it particularly suitable for scenarios demanding strict control of negatively charged impurities—such as ultrapure water preparation in electronics, biopharmaceutical filtration in healthcare, and sterilization in food and beverage processing. This membrane represents an ideal choice for high-precision filtration.

We have long been committed to producing high-quality positive-charge nylon pleated cartridges. Our products undergo 100% integrity testing.