As a new type of ultra-lightweight, high-performance thermal insulation material, aerogel boards have shown broad application prospects in many fields in recent years. With its excellent thermal insulation performance, outstanding fire resistance and good mechanical strength, aerogel boards are widely used in many industries such as building energy conservation, industrial insulation, aerospace, rail transportation and new energy. With the continuous advancement of material technology and the increasing requirements for environmental protection and energy conservation, aerogel boards are gradually expanding from high-end fields to the civilian market, becoming an important development direction for energy-saving and environmentally friendly materials in the future.
Content
1. Current mainstream application areas
2. Technical bottlenecks and innovation directions
3. Market prospects and policy drivers
1. Current mainstream application areas
Thermal management of lithium-ion batteries
In electric vehicles and energy storage systems, aerogel boards are widely used as thermal insulation layers for battery packs, effectively suppressing the spread of thermal runaway and improving the safety of the system. It has a wide range of applicable temperatures, covering from -50°C to 1000°C, and can provide stable protection under extreme conditions. For example, adding an aerogel layer to the power battery pack of an electric vehicle can significantly reduce the risk of thermal diffusion.
Ultra-low energy consumption building insulation
In energy-saving projects such as passive buildings and green buildings, aerogel boards have gradually become an ideal choice to replace traditional insulation materials such as polyurethane. It can not only effectively improve the insulation efficiency, but also achieve efficient insulation without increasing the thickness of the wall. In addition, aerogel boards also show excellent performance in places with strict temperature control requirements such as data centers and cold chain logistics warehouses.
Industrial high-temperature equipment protection
Aerogel boards can withstand high temperatures above 650°C and are widely used in thermal insulation protection of industrial high-temperature equipment such as dryers, reactors, and boilers. Compared with traditional ceramic fiber materials, aerogels have obvious advantages in long-term thermal stability and thermal energy utilization, which can effectively reduce heat loss and extend equipment life.
Multimodal sensor development
Using the low thermal conductivity and high response sensitivity of aerogel, dual-modal sensors with integrated pressure and temperature sensing functions can be manufactured, which are suitable for scenarios such as robot tactile systems and medical testing instruments. For example, sensors developed using PCCM (Phase-Change Composite Material) aerogel can be used for high-precision feedback modules in industrial automation systems.
Spacecraft thermal protection system
In extreme temperature and microgravity environments, aerogel boards are used as lightweight and efficient thermal protection materials in the thermal insulation design of key parts such as spacecraft, satellites and rocket engine compartments. Its ultra-light weight and excellent thermal insulation properties help reduce loads while ensuring flight safety, making it one of the indispensable new materials for aerospace engineering.
2. Technical bottlenecks and innovation directions
Current main technical bottlenecks
Although aerogel boards have significant advantages in terms of thermal insulation, light weight, and fire prevention, they still face some technical bottlenecks in practical applications. First, high production costs are the core problem that limits their large-scale promotion. The current mainstream sol-gel synthesis and supercritical drying processes are complex and require high equipment, resulting in product prices that are much higher than traditional insulation materials, making it difficult to popularize in cost-sensitive industries such as building energy conservation. Secondly, traditional aerogels, especially silica-based materials, perform poorly in mechanical properties, have problems such as high brittleness and easy fracture, and are difficult to withstand external stress and impact. This limits its application in high-stress and high-vibration environments, and it is necessary to introduce reinforcing materials such as carbon nanotubes (CNTs) and MXene to improve mechanical properties, but this will further increase costs and process complexity.
Main innovation directions
In order to break through the above technical limitations, current research and application directions are focusing on composite material development and advanced manufacturing technologies. By preparing organic-inorganic composite aerogels such as SiO₂/PI (polyimide), not only the high temperature resistance and structural strength of the material are significantly improved, but also the original low thermal conductivity of the aerogel is retained, expanding its application possibilities in extreme environments such as high-temperature industry and aerospace. At the same time, the introduction of 3D printing technology provides a new path for the processing of special-shaped components of aerogels, allowing them to be customized into complex geometric structures, improving the adaptability and functional integration capabilities of the material. This direction is expected to break the limitations of traditional aerogels in morphology and application scenarios, and provide key support for their commercial applications in multiple fields such as industry, electronics, and energy.
3. Market prospects and policy drivers
With the growing global demand for energy conservation, emission reduction and high-performance materials, aerogel boards, as a new generation of thermal insulation materials, show broad market prospects. According to industry research reports, by 2025, the global aerogel market is expected to exceed US$2 billion, with an annual compound growth rate of about 15%. Among them, building energy conservation, new energy vehicles, industrial high-temperature insulation and other fields have become the main growth drivers. In emerging markets such as China and India, with the improvement of urbanization and green building standards, the demand for high-efficiency energy-saving materials continues to rise. At the same time, the recognition of aerogel products in high-end application scenarios such as aerospace and energy development in Europe and the United States has also continued to increase, which has accelerated the global application layout of aerogel boards.
At the policy level, the promotion and application of aerogel boards are also actively driven by a number of national and regional policies. Taking China as an example, the "dual carbon" goal (i.e., carbon peak and carbon neutrality) has promoted the accelerated adoption of high-performance energy-saving materials in the construction and industrial fields, and aerogel boards, as ultra-low thermal conductivity materials, have become one of the important materials for green buildings, cold chain logistics and other projects. The EU has revised the Building Energy Efficiency Directive and clearly proposed the goal of improving the thermal insulation performance of building envelopes, which provides policy support for the application of aerogel panels in the European construction market. In addition, energy-saving standards, subsidy policies and green certification mechanisms introduced by various countries are creating a good policy environment for the development of the aerogel industry and accelerating its penetration from high-end applications to a wider market.
Aerogel boards have demonstrated irreplaceable material value in the fields of new energy, building energy conservation, industrial equipment, aerospace, etc. due to their excellent thermal insulation, fire resistance, and light weight. They play a key role in improving energy efficiency, safety, and lightweight structures. Looking to the future, the development of aerogel boards will focus on breakthroughs in low-cost large-scale preparation processes to further lower the application threshold; at the same time, the multifunctional integration direction will promote their deep integration in smart buildings and high-end equipment. In addition, with the cross-innovation of material technology, the potential of aerogels in emerging fields such as biomedicine and wearable devices is gradually being explored, and the market application space is broad.