Background: Poly (vinyl formal) (PVF) filter material has broad application in the field of precision filtration due to its unique properties

such as fine pore

high filtration precision

large flux and no fiber loss. Purpose: The goal of this work is to prepare modified PVF filter material by γ-radiation technology. Methods: Modified polyvinyl formal filter materials were prepared by γ-radiation technology with polyvinyl alcohol (PVA-1799) and formaldehyde as raw materials

and pentaerythritol triacrylate (PETA) as modifier. The compared properties of cell structure

mechanical properties

dimensional stability

water absorption

water resistance and oil resistance were tested and characterized. Results: The results showed that the material pore size was less than 300 μm

the tensile strength reached 3.01 MPa

and the tear strength was 13.23 MPa

which had good stability and better mechanical properties as well as oil resistance and water resistance abilities. Conclusion: γ-radiation technology can simplify the production process of PVF filter materials

reduce inorganic acid and formaldehyde dosage

and thus is beneficial for environment protection. Abstract