Li Junxian, male, was born in Meishan County, Sichuan Province on March 10, 1928. In August 1950, he graduated from the chemical engineering department of the National Central Technical College in Leshan City, Sichuan Province. He started working in August 1950 and joined the Communist Party of China in June 1956.
In 1951, he worked in the research office of Shenyang Northeast Chemical Industry Bureau. Due to his hard work, he was later transferred to the Russian language training class of the Ministry of Chemical Industry and Beijing Chemical Industry Research Institute. In 1959, he was sent by the organization to do a research internship at the Institute of Organic Chemistry of the Central Chemistry Committee of the Soviet Union, and returned to China one year later.
In the early 1960s, China decided to develop cutting-edge technologies for national defense, and arranged for the development of “two bombs and one satellite” and their propellants. At this time, the organization decided to let Li Junxian, who was in his early 30s, be the director of the Rocket Propellant Research Office. Only Li Junxian has the deepest understanding of how heavy the burden is! On the whole, “two bombs and one satellite” is a large system project. If the “two bombs and one satellite” are built without propellant, it is equivalent to building a car without gasoline.
In 1966, Li Junxian rushed from Beijing Research Institute of Chemical Industry to Qinghai Province in the northwest, where he planned to build a chemical plant on the former site of a chemical fertilizer plant in a remote valley, and started the research and development of aerospace propellants. For the installation of various equipment, Li Junxian always goes to the site in person, checks repeatedly, and checks carefully. In order to obtain first-hand information about the experiment, he and his colleagues often have to observe continuously for more than ten hours in a workshop with no walls and more than minus 20 degrees Celsius, and then revise the process plan. In February 1968, unsymmetrical dimethylhydrazine, a high-performance chemical propellant for launching artificial satellites, which he presided over, was finally born. The production process and product quality have reached the world’s advanced level. In 1970, China’s first artificial satellite “Dongfanghong No. 1” was launched, using unsymmetrical dimethylhydrazine developed by Li Junxian’s team.
Li Junxian has been engaged in the synthesis of organic chemicals for a long time. The successful development of unsymmetrical dimethylhydrazine by chloramine method meets the needs of various missiles, and the production equipment and product quality are at the advanced level in the world; the successful development of monomethylhydrazine meets the needs of high-efficiency pesticides and long-life satellite attitude control; The main component has developed Yupush-3 fuel, the product quality has reached the advanced level of fuel for thermal power torpedoes in the United States, and it has now been used as a propellant for Chinese thermal power torpedoes; participated in and presided over the development of hydroxyl-terminated polybutadiene for solid propellants Pilot test research to meet the needs of more than 30 types of rockets and missiles. He has won national, provincial and ministerial awards for many times, and the “Liquid Unit Propellant – Yutui – 3 Research” won the first prize of the National Science and Technology Progress Award in 1995. Published more than 30 academic papers.
Edit this paragraph research achievements
Li Junxian is one of the pioneers in the field of polyurethane reaction injection molding technology in China. During his tenure as the dean of Liming Institute, he developed a large number of civil projects with good economic and social benefits. The research and development of polyurethane led and presided over by him has achieved more than 20 scientific research achievements through key scientific and technological breakthroughs during the “Seventh Five-Year Plan” and “Eighth Five-Year Plan”. The complete set of technology has now built multiple workshops and production lines in the hospital. The products have been matched in automobile manufacturing companies in Shanghai, Guangzhou, Wuhan and other places. The products are also widely used in home appliances, furniture, building materials, oil fields, mines, aviation and railways, etc. field. The products have been successfully applied to more than 20 types of strategic and tactical weapon rocket engines, aerospace and weapon boosters.
In view of Li Junxian’s significant contributions to national defense and economic construction, the 1987 National Science and Technology Conference awarded him the “Advanced Worker with Major Contributions” award; the All-China Federation of Trade Unions awarded him the “Advanced Scientific and Technological Worker” and the “May 1st Labor Medal” in 1987 ; In 1988, the State Council awarded him “National Expert with Outstanding Contributions”; in 1989, he was named “National Advanced Worker”; in 1990, the State Council approved him to enjoy special government allowances; worker”.
In 1978, the research and development of unsymmetrical dimethylhydrazine, the second National Science Conference, the major achievement award
1989, Synthetic solution of high-concentration unsymmetrical dimethylhydrazine by chloramine method, National Science and Technology Commission, Invention Award, third class
1994, December, Research on liquid unit propellant Yutui-3, Ministry of Chemical Industry, Science and Technology Progress Award, first class
In the early 1980s, Li Junxian promoted the establishment of a special laboratory in the Liming Chemical Research Institute, and proposed to focus on reaction injection molding, while researching raw materials and additives. A total of more than 20 achievements have been made, many of which have filled the gaps in China. It has played an important role in the development of complete sets of technology for China’s RIM-PU industry from key raw materials, additives, formulas, processing techniques to product production. Today, a car parts production line with an annual output of 30,000 sets, a polyurethane combined polyether production line with an annual output of 10,000 tons, a modified isocyanate production line with an annual output of 3,000 tons, and a car buffer stop block with an annual output of 10 million pieces have been built in the research institute. Production line, polyurethane prepolymer production line with an annual output of 3,000 tons, and polyurethane elastomer product production line with an annual output of 20,000 pieces. And set up “National Polyurethane Reaction Injection Molding Engineering Technology Center” and “China Chemical Productivity Promotion Center Polyurethane Sub-center”.
Li Junxian believes that scientific research workers are dedicated and down-to-earth in their research, and the experimental data and so on are not in vainFalse; we should also care about economic and social development trends to achieve the best connection between scientific research and industry. “National defense security and national development rely on independent innovation, and the rise of the Central Plains also depends on independent innovation in science and technology,” Li Junxian said with deep emotion, “As a scientific and technological worker, we must understand the heavy burden on our shoulders, work hard, innovate endlessly, and benefit Humanity”. ,
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