Study on the Manufacturing Process and Characterization of Polyimide Non-woven Filter
Vol. 59, No. 2, pp. 116-122,
Apr. 2022
10.12772/TSE.2022.59.116
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Abstract
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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