Introduction of Carbon Nanotubes into Glass Fiber Non-woven Fabrics
Vol. 58, No. 5, pp. 274-280,
Oct. 2021
10.12772/TSE.2021.58.274
PDF
Abstract
Introduction of nanomaterials into filter media has attracted tremendous
research interest owing to their excellent efficiency in the removal of fine particulate matter.
Whereas glass fiber-based non-woven removes at least 99.97% of dust, pollen, mold,
bacteria, and any airborne particles with a size of 0.3 μm, their low thermal dimensional
stability and decrease in the efficiency for dust removal hinders their recyclability and sustainable
usage. Herein, single-walled carbon nanotubes (CNTs) are introduced into the
glass fiber filter media (MERV 13 level) to improve the mechanical strength and thermal
dimensional stability. Obviously, existing CNTs inside filter media facilitate the structural
network formation between glass fibers with a high thermal stability, resulting in a higher
onset degradation temperature (Td > 390oC). Indeed, their mechanical strength along
cross direction (CD) increases by ~0.8 MPa with the addition of isotropic CNT solution.
Whereas air-permeability is slightly decreased with the addition of CNTs, their positive
effects as mechanical and thermal reinforcements show their potential for filter materials
with a hierarchical structure.
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