Halloysite nanotube enhanced thermal insulation coatings
Advanced thermal insulation coatings using halloysite nanotubes (HNTs) offer dual benefits of thermal insulation and corrosion resistance for steel and concrete infrastructure. Ideal for extreme climates, these coatings are scalable, cost-effective, and sustainable.
Overview
Halloysite nanotube (HNT) enhanced coatings are designed to improve the durability and longevity of steel and concrete infrastructure in extreme climates. By incorporating naturally occurring clay nanotubes, these coatings provide superior thermal insulation and corrosion resistance. The hollow tubular structure of HNTs disrupts heat flow, reducing thermal expansion stress, while enhancing mechanical strength to resist cracking and corrosion. Suitable for both retrofitting and new construction, these coatings are especially valuable in hot, humid regions such as the Southern Plains and Gulf Coast.
Technical specifications
- Material Composition: Blends of halloysite nanotubes with commercial paints and cementitious binders.
- Thermal Insulation: Effective thermal conductivity reduction, measured via HotDisk TPS500 and Searle’s Apparatus.
- Application Methods: Supports roller and spray-gun applications for easy field deployment.
- Adhesion and Durability: High integrity and bonding on steel and concrete substrates, verified by pull-off and crosshatch tests.
- Fire Safety Compliance: Tested to UL 790 and ASTM E84 standards for fire resistance.
- Sustainability: Utilizes natural materials for a cost-effective and environmentally friendly solution.
Technology readiness level
The current technology readiness level is 3. The solution is in the experimental phase, with ongoing formulation development, testing for thermal conductivity, application methods, and adhesion performance. A 12-month validation period is planned to ensure comprehensive evaluation and optimization of the coating system.
About Louisiana Tech University
Louisiana Tech University is a mid-sized public research university in Ruston, Louisiana, with an applied, engineering-driven character. An on-campus research and technology park lets companies co-locate with faculty, tap shared prototyping and test facilities, and engage through flexible sponsored-research models. Its position along the I‑20 innovation corridor offers access to regional employers and nearby federal installations, enabling rapid contracting, internships, and workforce pipelines. Research is supported by competitive funding from the National Science Foundation, Department of Defense, Department of Energy, and NASA, alongside state and industry partners. A dedicated technology transfer office streamlines IP, licensing, and startup formation with a single front door for corporate engagement.
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