There are few mass-produced PBO fiber companies in the world. my country breaks Japan’s technology monopoly

PBO fiber, the abbreviation of polyparaphenylene benzobisoxazole fiber, is a heterocyclic aromatic fiber. PBO fiber has the characteristics of high strength, high elastic modulus, high dimensional stability, high heat resistance, high flame resistance, impact resistance, friction resistance, light weight and softness. It is known as the “21st century super fiber” and is Ideal textile material.

PBO fiber products include filament, short fiber, pulp, etc. PBO fiber filament can be used as plastic, rubber, concrete reinforcement materials to manufacture tires, conveyor belts, pipes, cables and other products; it can be used as optical fiber cable protective sleeves; it can be used as communication and electronic materials; it can be used as durable Thermal filter material; can be used to make sports equipment; can be used to produce special clothing, such as bulletproof vests, aviation flight suits, fire suits, anti-cut protection suits, racing suits, etc.; can be used to prepare high-performance composite materials for use in weapons and equipment, Spacecraft manufacturing field. PBO fiber short fibers and pulp can be used as friction materials, sealing pads, cushion pad reinforcing materials, resins, plastic reinforcing materials, etc.

According to the“2022-2026 PBO Fiber (Polyphenylene Benzobisoxazole Fiber) Industry In-depth Market Research and Investment Strategy Suggestions Report” released by the Industrial Research Center It shows that PBO fiber was developed by American scientists. Dow Chemical of the United States was the first to carry out industrial development. Later, Japan’s Toyobo introduced PBO fiber production technology and achieved commercial production in 1998. PBO fiber has excellent comprehensive properties and can be used in the fields of aerospace and national defense. It is an important strategic resource. Its production technology is strictly confidential. For a long time, Japan’s Toyobo was the only company in the world with the commercial production capacity of PBO fiber. .

PBO fiber plays an important role in the manufacturing fields of bulletproof clothing, flameproof clothing, bulletproof armor, ballistic missiles, aviation flight suits, rocket engine isolation materials, etc. Against the background of technological blockade, our country must achieve independent production to meet the development needs of high-tech industries . In 2018, Zhongke Jinqi New Material Technology Co., Ltd. built the country’s first 100-ton/year PBO fiber production line; in 2019, Chengdu Xinchen New Material Technology Co., Ltd. put into production a 380-ton/year PBO fiber device. my country has become the second country in the world to have the industrial production capacity of PBO fiber after Japan.

Industry analysts said that PBO fiber has poor performance in terms of pressure resistance, light resistance and surface adhesion, especially on the surface. The disadvantage of weak adhesion results in insufficient interface adhesion with the composite matrix, which reduces the performance of PBO fiber-reinforced composite materials. PBO fiber can be modified to further improve the overall performance of the product. The modification methods of PBO fiber mainly include low-temperature plasma modification, coupling agent modification, and a combination of the first two.

Due to the short development time, there is still a gap in comprehensive performance between domestic PBO fiber and Japanese PBO fiber. In the future, while improving production capacity, my country’s PBO fiber industry must also pay attention to the improvement of PBO fiber production processes and research on modification processes to promote the continuous enhancement of the core competitiveness of my country’s PBO fiber industry.