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Related Experiment Video

Updated: Jun 11, 2025

Experimental Implementation of a New Composite Fabrication Method: Exposing Bare Fibers on the Composite Surface by the Soft Layer Method

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Published on: October 6, 2017

Nacre-Inspired Hybrid Multilayer Insulation Composites.

Long Zhu¹, Jongmin Shim², Yulong Huang³

¹Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States.

ACS Applied Materials & Interfaces

|September 30, 2024

Summary

Nacre-inspired cellulose-silica aerogels overcome brittleness issues in superinsulation. This novel design enhances mechanical strength and thermal insulation for eco-friendly building applications.

Keywords:

carbon sequestration composites insulation manufacturing multilayer

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Published on: December 24, 2017

Area of Science:

Materials Science
Nanotechnology
Green Building

Background:

Aerogels offer excellent thermal insulation but suffer from low mechanical strength and brittleness.
High porosity in superinsulation materials contributes to their structural limitations.

Purpose of the Study:

To enhance the mechanical properties and thermal insulation of aerogels.
To develop a robust and eco-friendly thermal insulation material inspired by nacre's architecture.

Main Methods:

Fabrication of nacre-inspired multilayer cellulose-silica aerogel composites.
Characterization of thermal conductivity, mechanical strength (flexural modulus, impact strength), hydrophobicity, soundproofing, and carbon footprint.

Main Results:

The 5+4 layered cellulose-silica aerogel exhibited a thermal conductivity of 31.3 mW/(m·K).
Achieved a flexural modulus of 505 MPa and impact strength of 7.33 kJ/m².
Demonstrated hydrophobicity (127° water contact angle), 27% noise reduction, and a low carbon footprint (0.49 kgCO₂eq/kg).

Conclusions:

Nacre-inspired multilayer design significantly improves aerogel mechanical performance.
The developed cellulose-silica aerogel is a promising sustainable thermal insulation solution for green buildings.