Next Article in Journal
Electrochemical Deposition of Gold Nanoparticles on Reduced Graphene Oxide by Fast Scan Cyclic Voltammetry for the Sensitive Determination of As(III)
Next Article in Special Issue
Effect of Zr Doping on the Magnetic and Phase Transition Properties of VO2 Powder
Previous Article in Journal
Efficient Synthesis of PVDF/PI Side-by-Side Bicomponent Nanofiber Membrane with Enhanced Mechanical Strength and Good Thermal Stability
Previous Article in Special Issue
Cyano-Bridged Cu-Ni Coordination Polymer Nanoflakes and Their Thermal Conversion to Mixed Cu-Ni Oxides
Article Menu
Issue 1 (January) cover image

Export Article

Open AccessArticle
Nanomaterials 2019, 9(1), 40;

Preparation and Properties of SiBCO Aerogel and Its Composites

Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology, 109 De Ya Rd, Changsha 410073, China
Jiuquan Satellite Launch Centre, 27 Branch Post Office, Jiuquan 732750, China
Authors to whom correspondence should be addressed.
Received: 27 November 2018 / Revised: 20 December 2018 / Accepted: 21 December 2018 / Published: 29 December 2018
PDF [5361 KB, uploaded 29 December 2018]


To obtain new high-temperature resistant composites that can meet the requirements of aircraft development for thermal insulation and mechanical properties, SiBCO aerogel composites were prepared by sol-gel, supercritical drying and high-temperature pyrolysis with trimethyl borate (TMB) or phenylboronic acid (PBA) as the boron source and mullite fiber as reinforcement. The structure and composition of the SiBCO aerogel and its composites were characterized with SEM, FT-IR, ICP and nitrogen adsorption tests. The specific surface area of the SiBCO aerogel is 293.22 m2/g, and the pore size is concentrated in the range of 10–150 nm. The mechanical properties, the thermal insulation properties and the temperature resistance were also studied. Due to the introduction of boron, the temperature resistance of SiBCO aerogel composites is improved greatly, and the service temperature of composites reached 1773 K. When n (TMB)/n (TEOS) = 1/1, the temperature resistance of the composites is the best. After heating in air at 1773 K for 30 min, the shrinkage of SiBCO aerogel composites is only 2.45%, and the thermal conductivity of the composites is 0.138 W/(m·K) at 1773 K. In addition, the type and amount of catalyst also have certain effects on the mechanical properties and temperature resistance of the composites. View Full-Text
Keywords: SiBCO aerogel; thermal insulation; mechanical property; high-temperature resistance SiBCO aerogel; thermal insulation; mechanical property; high-temperature resistance

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).

Share & Cite This Article

MDPI and ACS Style

Li, X.; Feng, J.; Yin, J.; Jiang, Y.; Feng, J. Preparation and Properties of SiBCO Aerogel and Its Composites. Nanomaterials 2019, 9, 40.

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



[Return to top]
Nanomaterials EISSN 2079-4991 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top