Alumina fiber has high application value and my country’s high-end market relies on imports

Alumina fiber, also known as polycrystalline alumina fiber, is a high-performance inorganic fiber that comes in various forms such as long fiber, short fiber, and whisker. The main component of alumina fiber is aluminum oxide, and it also contains a small amount of Si02, B203, Zr203, MgO and other components. Alumina fiber has the characteristics of high strength, good heat resistance, low thermal conductivity, low thermal expansion coefficient, and low raw material cost. It is widely used in high-temperature insulation materials, military composite materials, machinery, electronics, ceramics, chemical industry and other fields.

Alumina fiber preparation processes are diverse, including slurry method, sol-gel method, melt spinning method, prepolymerization method, Bu Nemen method, impregnation method, etc. Generally speaking, the preparation process of alumina fiber is relatively simple and has low requirements on production equipment and production conditions, which provides sufficient conditions for the large-scale application of alumina fiber.

According to the “2022-2026 China Alumina Fiber Industry Market Monitoring and Future Development Prospects Research Report released by the Industrial Research Center , Alumina fiber has excellent heat resistance and has great application prospects in the future. In the early stage, due to limitations of technology and R&D level, the global alumina fiber market was mainly monopolized by foreign companies, such as DuPont of the United States, 3M of the United States, Mitsubishi of Japan, and ICI of the United Kingdom. wait.

At present, my country has achieved commercial production of alumina fiber. However, due to the late start of research, the demand for high-end alumina fiber still relies on imports. At present, my country’s alumina fiber-related manufacturers include Shandong Dongheng Guofan New Materials, Deqing Hongye, Zhejiang Jiahua, Aolin New Materials, Ou Shiman Crystal, etc. Driven by policies, demand, and technology, domestic companies have expanded production capacity. In the future The scale of my country’s alumina fiber industry will further expand.

With the improvement of R&D capabilities of manufacturing enterprises, the types of alumina fibers are becoming increasingly abundant, among which polycrystalline mullite fiber is one of the main varieties of alumina fibers. Polycrystalline mullite fiber is the latest ultra-light, high-temperature and heat-resistant fiber at home and abroad. It mainly exists in the form of mullite microcrystalline phase. Compared with traditional alumina fiber, polycrystalline mullite fiber has better high-temperature resistance. , creep resistance, earthquake resistance and other aspects have advantages.

The alumina fiber market has broad development prospects, but due to technical limitations, there are still many challenges in industry development. For example, the performance stability of alumina fiber is poor, and other elements need to be added to improve its stability; the alumina fiber production process needs to be optimized, and currently The purity of the alumina fiber prepared by the process is low.

Industry analysts said that as one of the high-performance inorganic fibers, alumina fiber is widely used in aerospace, military industry, automobiles, electronic machinery, etc. The field has broad development prospects. With technological advancement and demand release, the alumina fiber market will continue to expand. my country’s alumina fiber market started late. Although commercial production has been achieved, the supply capacity of high-end alumina fiber is low, and demand still relies on imports.