Next Article in Journal
In-Vitro Evaluation of 52 Commercially-Available Essential Oils Against Leishmania amazonensis
Next Article in Special Issue
Nanoindentation of Graphene-Reinforced Silica Aerogel: A Molecular Dynamics Study
Previous Article in Journal
A UHPLC-UV Method Development and Validation for Determining Kavalactones and Flavokavains in Piper methysticum (Kava)
Previous Article in Special Issue
Design of Aerogels, Cryogels and Xerogels of Alginate: Effect of Molecular Weight, Gelation Conditions and Drying Method on Particles’ Micromeritics
Article Menu
Issue 7 (April-1) cover image

Export Article

Open AccessArticle

Fabrication and Characterization of MSQ Aerogel Coating on ePTFE Thin Films for Cable Sheaths

1
School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
2
Pan Asia Microvent Tech (Jiangsu) Corporation & Zhejiang University Micro-nano-porous Materials United Research Development Center, Changzhou 213100, China
*
Author to whom correspondence should be addressed.
Academic Editors: Eng. Carlos A. García-González and Luísa Durães
Molecules 2019, 24(7), 1246; https://doi.org/10.3390/molecules24071246
Received: 28 February 2019 / Revised: 26 March 2019 / Accepted: 27 March 2019 / Published: 30 March 2019
(This article belongs to the Special Issue Engineering of Aerogels and Their Applications)
  |  
PDF [15273 KB, uploaded 30 March 2019]
  |  

Abstract

With methylsilsesquioxane (MSQ) aerogels synthesized by the sol-gel method as a raw material and Si-Ti sol as a binder, an alcohol-based aerogel slurry consisting of only MSQ aerogel and Si-Ti sol was prepared and coated on expanded polytetrafluoroethylene (ePTFE) to form an MSQ aerogel coating layer, followed by low-temperature heat treatment. The effect of Si-Ti sol content on the microstructure of the MSQ aerogel coating layer was investigated, and the properties of a typical MSQ aerogel-layer-coated ePTFE film were evaluated. The results show that Si-Ti sol has an important role in terms of film-forming capability, surface smoothness, flexibility, and powder dropping of the MSQ aerogel coating layer. With a Si-Ti sol of 10.5 wt.% content as a binder and after heat treatment at 170 °C for 30 min, the coated ePTFE flexible thin film with a layer thickness of 30 μm shows high uniformity, integrity, and electrical insulation properties, with an elongation at break decrease over 130%, a thermal conductivity of 0.1753 W/(m·K) at 25 °C, a dielectric constant of 16.5674, and a dielectric loss of 0.06369, which can be promisingly applied in cable sheaths. View Full-Text
Keywords: MSQ aerogel; ePTFE; aerogel coating; cable sheath MSQ aerogel; ePTFE; aerogel coating; cable sheath
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Guo, X.; Bai, S.; Shan, J.; Lei, W.; Ding, R.; Zhang, Y.; Yang, H. Fabrication and Characterization of MSQ Aerogel Coating on ePTFE Thin Films for Cable Sheaths. Molecules 2019, 24, 1246.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Molecules EISSN 1420-3049 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top