Li Junxian believes that researchers concentrate on research and the experimental data is not false at all; We should also pay attention to the trend of economic and social development and realize the best connection between scientific research and industry. "National defense security and national development depend on independent innovation, and the rise of the Central Plains also depends on independent innovation in science and technology," Li Junxian said with deep feelings. "As a scientific and technological worker, we must understand the burden on our shoulders, work hard and innovate constantly to benefit mankind!
character trait
Behind success is meticulous work attitude and rigorous study style. He is very strict with the data, and what kind of scientific experiments are will reflect the results, and must not be mixed with water. "Success often comes from finding problems. Only by grasping the problem can we find a solution. " He carefully reviewed the design, technology, calculation and experimental reports, design drawings, etc. And be good at finding problems that others find difficult. Once the problem is found, it is necessary to find out the deep-seated reasons and immediately correct the process plan.
Strong patriotism and dedication to work, willing to be lonely, indifferent to fame and fortune, provided him with inexhaustible motivation for diligent study.
Academician Li Junxian, who is introverted and inarticulate, expressed his love for the motherland with practical actions.
Li Junxian is always good at seizing every minute of study, and always carries a notebook full of new terms, technical terms and new ideas in his pocket. Even between meetings and business trips, I am always thinking over and over again. In the 1980s, when computers came into the office, he worked hard to develop excellent computer typing skills through "One Finger Zen". Today, he can surf the Internet skillfully, consult materials, read foreign literature and follow the latest scientific research trends every day. The computer is full of all kinds of data, so many hard disks are not enough.
1June, 966, in order to build the first set of unsymmetrical dimethylhydrazine plant by chloramine method in China as soon as possible, Li Junxian, like everyone else, resolutely obeyed the organizational arrangement and moved to the depths of the plateau where the living conditions were extremely difficult. A chemical plant was built on the site of the chemical fertilizer plant at an altitude of more than 2400 meters. As the deputy director and chief engineer, Li Junxian led everyone to overcome all difficulties with the heroic spirit of "vowing to send satellites to the sky": eating salted broad beans and boiled highland barley powder, and steamed buns steamed with highland barley powder are always unfamiliar; I live in Ganji and sleep in Datong shop. When it rains, muddy water often permeates the bedding, so I can't sleep. He often works late into the night with stomachache. After unremitting efforts, the unsymmetrical dimethylhydrazine production plant was finally put into operation in February 1968. Since then, several sets of unsymmetrical dimethylhydrazine production plants have been built and put into operation in different regions by using this technology, which has ensured the urgent needs of China's national defense and aerospace industry.
Serve the country with science and technology
Polyurethane research
One day, he suddenly received an urgent and secret task to develop a special chemical propellant of "two bombs and one satellite".
Rocket lift-off needs strong thrust, and the development of special fuel unsymmetrical dimethylhydrazine has been put on the agenda. Under the unfavorable conditions of the withdrawal of experts from the former Soviet Union, that is, lack of information, experience and funds, Li Junxian and the comrades in the research room worked against the clock.
On the basis of summing up the experience of the previous two years, after full demonstration, it was decided to concentrate on preparing unsymmetrical dimethylhydrazine by chloramine method.
The preparation of unsymmetrical dimethylhydrazine from chloramine can be divided into gas phase method and liquid phase method. Li Junxian led the research team to test these two methods. The data show that the content of unsymmetrical dimethylhydrazine in the synthetic liquid by gas phase method is high. When the superior assigned the task to Li Junxian's research group, it was clearly required that the research group only concentrate on developing the gas-phase chloramine method. However, Li Junxian found some difficulties in the gas phase test that are difficult to solve under the current conditions, so it had to repeatedly carry out the comparative test between the gas phase method and the liquid phase method, and concluded that the liquid phase method could provide the technical data needed for mass production in a short time. He knows very well that if he doesn't carry out the experiment according to the gas phase method required by the leading department, he will bear the responsibility risk and even be criticized! The news was still known by the superior. However, the leading departments not only failed to investigate their "violation of discipline" responsibility, but recognized and supported their practices. 1964 The production of unsymmetrical dimethylhydrazine by liquid chloramine was rated as one of the top ten achievements in China's industrial transportation front.
In the early 1970s, the technical indexes of thermal torpedo propellants in active service in China's navy were far behind those in developed countries. 1September, 973, the task of developing torpedo propellant, referred to as 796 fuel, was assigned to Liming Chemical Research Institute by the superior. He voluntarily promised to provide more than tons of batch 796 fuel as scheduled to meet the needs of torpedo development in time. After careful consideration, the relevant departments adopted his opinion, so the country avoided developing transitional torpedoes, saved a lot of manpower and material resources, and advanced the development progress of advanced torpedoes by three years. The project won 1978 National Science Conference Award, 1994 First Prize of Ministry of Chemical Industry, and 1995 Second Prize of National Science and Technology Progress.
Hungry learning spirit and scientific and rigorous research methods have provided a steady stream of motivation for his innovation and judgment.
As early as 1979, Li Junxian, then president and chief engineer of Liming Chemical Research Institute, was keenly aware that it was only a matter of time before China's automobiles were localized. Therefore, his development goal is firmly locked in the research and development of a large number of adhesives and polyurethanes that are urgently needed in China and have no independent intellectual property rights.
With the active promotion of Li Junxian, Dawn Institute established two professional laboratories, adhesives and polyurethane, in 1983, which laid the foundation for the development of civil polyurethane materials in China.
1992, Li Junxian was invited to attend an international academic conference abroad. He discovered a high-tech polyurethane material and preliminarily judged that it would have a great market in China in the future. After coming back, he personally consulted the materials and worked out the experimental scheme. Finally, he successfully developed this material and successfully matched Volkswagen, breaking the foreign monopoly. At present, it has formed a high-tech enterprise with an annual sales income of over 100 million yuan.
Freon destroys the ozone layer and harms human beings. Li Junxian actively suggested and carried out research work to reduce the hard foam of Freon PU, and quickly developed alternative technology to fill the domestic gap, and quickly popularized and produced the first green refrigerator, which was highly praised and rewarded by the United Nations.
Science and technology team training
Concentrating on cultivating scientific and technological teams is not only the need of cultivating academic echelon, but also the objective requirement of integrating scientific research forces. "At present, some project studies," Li Junxian said with some worries, "lack of systematicness and long-term, and some problems cannot be thoroughly understood. This requires relevant departments to reform the scientific research management mechanism and increase investment. " Li Junxian is the deputy director of the evaluation team of "Provincial Outstanding Talents Fund", and he thinks this work is of great significance to promoting the development of scientific research talents. In the past August, the evaluation experts worked closely with the Organization Department of the Provincial Party Committee and the Provincial Science and Technology Department to help more than 20 research groups get excellent fund support, involving tens of millions of yuan, involving chemical industry, agriculture and other fields closely related to the province's economic development.
Scientists and technicians should care about the country. Li Junxian proudly said: "My most important achievement is to participate in and develop unsymmetrical dimethylhydrazine and monomethyl hydrazine, develop Yutai No.3 fuel, and preside over the pilot study of hydroxyl-terminated polybutadiene for solid propellant." As important strategic sensitive materials, these rocket propellants are definitely not sold to China by developed countries. China has completely realized its own manufacturing from the state of being "stuck in the neck" by others, which is attributed to the important inventions led by Li Junxian in the 1950s and 1970s. Li Junxian told reporters that the research of UDMH propellant is very important in the development of two bombs and one satellite, and this research project was personally grasped by Premier Zhou Enlai. 1970 "dongfanghong-1" satellite was launched with UDMH propellant; At present, UDMH and methylhydrazine are used to launch China satellite and Shenzhou series spacecraft.
"Our only motivation for scientific and technological inventions is to serve our country," Li Junxian said. "Regardless of personal gain and loss, fame and fortune, we will do it voluntarily. The sooner we develop it, the sooner we will strengthen our national strength. " In the early 1970s, China developed high-speed, long-range and deep-dive torpedoes. Worried about whether the research team chaired by Li Junxian could develop propulsion fuel on time, it planned to switch to a common fuel. Li Junxian, who has always been modest, said at the seminar: "We are responsible for delaying the task!" Advanced torpedo propulsion fuel was taken out two years ahead of schedule. Li Junxian said: "The use of backward fuel makes torpedoes lag behind advanced countries for a whole generation. It is too difficult to change it after it is widely popularized. In any case, let our torpedoes be no worse than others! "
This sense of responsibility is exchanged for excellent performance. The purity of unsymmetrical dimethylhydrazine developed in Li Junxian is as high as 99%. The quality of monomethyl hydrazine products exceeds the American military standards, and the quality of advanced torpedo fuel is equivalent to that of American advanced torpedo fuel. 1989 "Dongfanghong-3" communication satellite apogee engine simulated high-altitude ignition, using the monomethyl hydrazine product stored in 13 years, which shows that the quality of scientific research results is excellent!
Li Junxian, who is over 80 years old, is still directing the research work of higher-energy rocket propellant, supported by the pure heart of serving the country with his fist.