Study on the Manufacturing Process and Characterization of Polyimide Non-woven Filter

In this study, PI fiber and nonwoven fabric were fabricated for the manufacture of PI fiber high-temperature filter. The PI fiber was made in two steps, and poly(amin acid) (PAA) was polymerized by polymerizing 4,4’-oxydianiline (ODA) as an aromatic aminebased monomer and pyromellitic dianhydride (PMDA) as a solvent with N,N-dimethylacetamide (DMAc). PAA fibers were manufactured by wet spinning, PI fibers were manufactured by imidizing PAA fibers, and the properties of non-woven fabrics were investigated. To confirm the degree of imidization, various tests such as FT-IR analysis and shrinkage, heat resistance, deterioration analysis, maximum operating temperature, chemical resistance, and dust collection efficiency were also performed.

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Study on the Manufacturing Process and Characterization of Polyimide Non-woven Filter

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