Composite Film

A composite membrane design material introduced on February 17, 2022, utilizes a combination of microporous or ultrafiltration membranes as branch layers, accompanied by a dense, uniform membrane layer ranging from 0.1 to 0.25 μm in thickness as a barrier. This innovative approach enhances substance permeability significantly, allowing for various material combinations such as ceramic on metal oxide or aromatic polyamide on polysulfone microporous membranes.

The preparation methods encompass lamination, dip coating, plasma vapor deposition, and interfacial polymerization techniques, each contributing to the membrane's enhanced functionality. Primarily employed in separation processes like reverse osmosis, gas separation, and pervaporation, the composite membrane features an active layer with separation properties and a porous layer for support.

Additionally, when integrated with geotextiles on one or both sides, it forms a composite geomembrane possessing high physical and mechanical attributes suitable for civil engineering applications requiring anti-seepage, reinforcement, isolation, and anti-crack capabilities. The product's resilience to extreme temperatures, anti-aging properties, acid and alkali resistance, and anti-corrosive nature make it ideal for diverse projects such as dam anti-seepage, waste dump anti-fouling, and waterproofing in construction.

Selection of appropriate design materials, geomembrane thickness determination based on water pressure requirements, and consideration of application conditions ensure efficient and effective usage tailored to specific project needs. Additionally, for anti-seepage treatments involving concrete structures, filament highways directly bonded to cement substrates are recommended. Overall, the composite membrane design material presents a versatile solution with vast applications in civil engineering projects, incorporating innovative technology to address various challenges effectively.