Ultralight polymer-hybrid aerogels for advanced thermal insulation
Innovative polymer-hybrid aerogels with low density and high porosity for thermal insulation. These aerogels offer enhanced thermal stability and mechanical integrity, suitable for space-limited construction applications.
Overview
The ultralight polymer-hybrid aerogels developed by North Carolina State University present a groundbreaking solution for thermal insulation in space-limited applications. These aerogels are composed of organic-inorganic hybrid nanofibers, providing a low density ranging from 0.008 to 0.02 g/cm³ and a porosity exceeding 98%. This unique structure allows for exceptional thermal insulation properties, achieving a targeted R-value of ≥7 per inch. The incorporation of a silica network enhances thermal stability and flame resistance, while polymer crosslinking with materials like cellulose acetate improves mechanical strength and processability.
Technical specifications
- Low Density and High Porosity: Achieves densities between 0.008-0.02 g/cm³ with porosity >98%.
- Thermal Insulation: Target R-value of ≥7/inch, meeting Class A fire performance.
- Material Composition: Hybrid nanofibers made from cellulose acetate-silica, optimized for heat resistance and flexibility.
- Processing Technique: Uses sol-gel electrospinning and freeze-drying, minimizing organic solvent use.
- Mechanical Integrity: Enhanced through polymer crosslinking to sustain cyclic compression and maintain structural stability.
- Scalability: Potential for scalable production suitable for real-world construction applications.
Technology readiness level
The development of these aerogels is at Technology Readiness Level 3. Preliminary results have demonstrated strong heat resistance and mechanical flexibility. Future validation will focus on optimizing fiber morphology and aerogel structure to meet ASTM E136 non-combustibility standards and further improve the material's thermal and mechanical properties for practical applications.
About North Carolina State University
North Carolina State University is a large, comprehensive public land‑grant research university in Raleigh. Its on‑campus research and technology park co‑locates corporate R&D groups, government partners, and faculty labs, enabling shared facilities, prototyping, and agile contracting. Located in North Carolina’s Research Triangle, partners tap a dense regional ecosystem while engaging through a statewide extension network and a mature co‑op program that deliver field deployment and workforce pipelines. Multiple pilot and demonstration facilities support scale‑up and validation toward pre‑commercial readiness. Research is supported by competitive funding from major federal agencies, including NSF, USDA, DOE, and DOD, and a dedicated technology transfer office with clear IP pathways helps accelerate commercialization.
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