DOE Funds Innovative, Low-Cost Aerogel Production for High-R Insulation, Pioneering Poly-DCPD Materials

米国エネルギー省 (Department of Energy) USA

Overview

The U.S. Department of Energy (DOE), in collaboration with Optowares Inc., is advancing a project for innovative, low-cost production of high-R value aerogel blankets. Addressing the high cost of traditional silica aerogels (>$10/ft²), this initiative employs polyester resin-based poly-DCPD aerogels and Ambient Pressure Drying (APD) to significantly cut manufacturing costs. The goal is to accelerate aerogel adoption in building and industrial insulation, enhancing energy efficiency and reducing greenhouse gas emissions. This effort could also extend to energy storage and solar power applications.

In Depth

Background

Improving energy efficiency and reducing greenhouse gas emissions are urgent global challenges, to which enhancing building insulation performance can greatly contribute. Aerogels, renowned for their extremely high porosity and ultra-low thermal conductivity, are known as “dream materials” with the best insulation performance among currently available solid materials. Silica aerogels, in particular, exhibit excellent insulating properties, but their very high manufacturing cost (over $10 per square foot) and brittle nature have significantly limited their widespread adoption for broad applications in building walls, roofs, floors, and industrial insulation. Overcoming these cost and practicality challenges is essential for the societal implementation of aerogel technology.

Key Findings / Results

The U.S. Department of Energy (DOE), in collaboration with Optowares Inc., is promoting a project for the innovative production of low-cost, high-R value (R-value is an indicator of insulation performance, higher R-value means better insulation) aerogel blankets. The primary goal of this project is to resolve the challenges of existing silica aerogels and provide more economical and practical insulation materials. Specifically, the development focuses on the following key areas:

• Adoption of Poly-DCPD Aerogels: Instead of expensive silica-based aerogels, the project utilizes polyester resin-based poly-DCPD (polydicyclopentadiene) aerogels. Poly-DCPD aerogels hold the potential to significantly reduce material costs while offering excellent insulation performance comparable to silica aerogels. They are also highly flexible, making them easy to process into blanket forms.
• Manufacturing via Ambient Pressure Drying (APD): To replace the supercritical drying method, which is a major cost driver in conventional silica aerogel manufacturing, a simpler and lower-cost Ambient Pressure Drying (APD) method is used to produce aerogels. APD eliminates the need for complex equipment and hazardous supercritical fluids, significantly streamlining the manufacturing process and reducing energy consumption and capital investment. This dramatically lowers the production cost of aerogels.
• Achievement of High R-Value: The development target is aerogel blankets with a high R-value that meets stringent building insulation requirements. As they can provide equivalent or better insulation performance with thinner profiles than existing insulation materials, they enhance building design flexibility and maximize usable living space.

Through these efforts, the project aims to remove economic barriers to aerogel technology and promote its widespread adoption in building and industrial sectors.

Technical Significance & Outlook

The development of this innovative aerogel production technology will make an extremely significant contribution to improving energy efficiency in the building and industrial sectors and to achieving a sustainable society. If low-cost, high-performance aerogel blankets become widespread, the following impacts are expected:

• Improved Building Energy Efficiency: Accelerates the proliferation of buildings with superior insulation performance, substantially reducing heating and cooling energy consumption. This directly contributes to reducing greenhouse gas emissions and mitigating climate change.
• Energy Savings in Industrial Processes: By being used as insulation materials for industrial pipelines and equipment, they minimize heat loss in manufacturing processes and reduce energy costs.
• Creation of New Market Opportunities: New manufacturing technologies and materials for aerogels will foster new industrial supply chains and job opportunities, promoting economic growth.

While this project aims to achieve low-cost and practical aerogel insulation materials, its technology may also extend to foundational areas of energy storage and solar power generation. Future challenges include demonstration testing of the developed poly-DCPD aerogels for long-term performance and durability, further optimization of the manufacturing process, and ensuring scalability for mass production. This research will be a crucial pillar for building future energy-efficient societies.