What are the advantages of aerospace-grade ultra-fine fiberglass sound and heat insulation cotton?
01. Sound and Heat Insulation Fiberglass Blanket
Aerospace-grade sound and heat insulation fiberglass blanket is a loose, porous felt-like material made by applying adhesives to ultra-fine glass fibers and then curing them at high temperatures. It can be used in aircraft sound and heat insulation materials to overcome harsh environments such as low temperatures and noise, ensuring passenger comfort.
Its production process has long been monopolized by developed countries in Europe and America, resulting in high prices. This project breaks the foreign technological monopoly, achieving domestic production, and its performance is comparable to foreign products.
02. Advantages of the Achievement
Lightweight and Ultra-fine
Average fiber diameter is 1~2μm;
Bulk density is 5~10kg/m3;
It is 1/5 to 1/10 the density of cotton blankets produced by other domestic manufacturers.
Sound and Heat Insulation
It has extremely high sound insulation and noise reduction coefficients, as well as extremely low thermal conductivity, exceeding Boeing standards.
Water Repellency and Flame Retardancy
Water repellency exceeds 99%, and it has excellent flame retardant properties, meeting the airworthiness requirements of the US FAA and the Civil Aviation Administration of China.
Human-Friendly
It possesses high biocompatibility and poses virtually no harm to the human body.
03 Application Areas
Civil Aviation
Used in domestically produced large passenger aircraft such as the C919. Overcomes the challenges of high-altitude, low-temperature, and high-noise environments, ensuring passenger comfort. Meets FAA and Civil Aviation Administration requirements for flame retardancy and water repellency; lightweight and ultra-fine, with an annual demand of approximately thousands of tons.
Military Aviation
Applied to new transport aircraft, new military aircraft, and other military aircraft. Provides efficient sound and heat insulation in harsh combat environments, reducing the risk of detection, improving crew survivability and mission effectiveness, with performance reaching international advanced levels.
High-Speed Railway
Used for thermal insulation and noise reduction in high-speed train carriages. Currently undergoing installation testing at CRRC Changchun Railway Vehicles Co., Ltd. Significantly reduces in-car noise and heat conduction, improving passenger comfort, and weighs only 1/5 to 1/10 of traditional materials, meeting lightweight requirements.
Other Areas
Applied to luxury cruise ships, warships, high-end RVs, etc. It exhibits high humidity resistance, a water repellency rate of 99%, flame retardancy, and good biocompatibility. It solves the challenges of cabin noise and temperature control, meeting stringent maritime and military standards.
04 Market Prospects
This project developed a product with internationally leading capabilities specifically for the domestically produced C919 large passenger aircraft. Various new passenger aircraft, transport aircraft, and military aircraft in China require this product, with annual demand in the aviation sector estimated at around 1000 tons.
This material breaks the foreign monopoly, achieving domestic production. Its performance is comparable to European and American products but at a lower cost. It can be further expanded into high-end equipment fields such as special-purpose vessels and high-end vehicles, showing significant potential for import substitution.
