Transport Properties of Electro-Sprayed Polytetrafluoroethylene Fibrous Layer Filled with Aerogels/Phase Change Materials
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Date
2020
Journal Title
Journal ISSN
Volume Title
Publisher
MDPI
Abstract
This work is the first attempt to prepare microporous polytetrafluoroethylene (PTFE) fibrous
layers embedded with aerogels/phase change materials. For preparation of this layer, the needle-less
electrospray technology of water dispersion of individual components is used. Microstructure
characteristics, including surface morphology and particle size distribution, and various properties of
the prepared materials were investigated and explained. Transport performance of the fibrous layers
embedded with aerogels/phase change materials, such as the transmission of heat, air, and water
vapor was evaluated and discussed in details. It was found that the electro-sprayed materials
composed by spherical particles with rough surface had compact disordered stacking structure.
Aerogels and phase change materials (PCMs) play different roles in determining structural parameters
and transport properties of the materials. Those parameters and properties could be flexibly adjusted
by optimizing the spinning parameters, changing the content or proportion of the fillers to meet
specific requirements.
Description
Subject(s)
water vapor permeability, thermal properties, electrospray, phase change material, silica aerogel, polytetrafluoroethylene