The application of composite materials is stagnant, because of poor stability, relatively large dispersion. "Liu Lianyuan reluctantly said," This batch of product performance has been achieved, the next batch and die. " Starting from the basic research of composite materials, fundamentally solve the technical problems of industrial development, which is the consensus of the experts interviewed. China's composite materials in the application and industrialization, compared with at least 10 years behind abroad.
"China's composite materials in the application and industrialization, compared with at least 10 years behind abroad." In the recently held China International Advanced Composite Materials and Technology Forum, the Chinese Academy of Engineering Liu Lianyuan said that the domestic composite materials, but many Off, the stability of technology and performance are not up to standard.
Composite materials industry: a production capacity, no production
And a lot of technology to promote the same route, the first composite materials used in the aerospace and military fields, and then turned to civilian areas.
Compared with the developed countries, composite materials in China's aerospace and military use is not high. It is reported that the developed countries, the amount of composite materials in some of the military has already been more than 50%, while the maximum use of military fighters in China is still less than 10%; in civilian, the United States large passenger Boeing 787 on the amount of composite materials is also more than 50% And China's first with independent intellectual property rights of the regional aircraft ARJ21 composite materials used only 2% of the weight of the aircraft structure.
Even so the amount of less, China's composite materials industry is still unable to meet domestic demand.
Structural technology and reliability of the technical contradictions
In the field of composite materials research and scientific problems, material structure efficiency and reliability of the contradiction is the most difficult to solve.
"As with many materials, the high efficiency and reliability of composite materials is difficult to take into account, is a pair of contradictions." Du Shanyi said that the performance of composite materials dispersion and service environment uncertainty is to control the composite materials and structural engineering The application of the biggest problem, but also composite materials, "soft ribs."
Solving problems should return to basic research
Starting from the basic research of composite materials, fundamentally solve the technical problems of industrial development, which is the consensus of the experts interviewed.
"China's basic research base of composite materials is thin, the development of the industry a bit anxious." Chinese Academy of Sciences researcher Xu Jian believes that the development of the industry should pay attention to basic research.
Du Shanyi believes that the scientific community needs to develop new theories and methods of mechanics to provide the solution to the discrete problems of composite materials and the uncertainties in service conditions.
The basic research of the basic research of the inherent high, high risk, long research cycle characteristics, is caused by China's composite materials research is weak, the lack of original technology, the root causes.
"The government should lay the foundation for the development of composite materials industry, with policy to promote basic research." Liu said that the government's planning for the industry is an important factor restricting the industrialization of composite materials, "must adhere to scientific research, production and application of the combination of continuous line."
"Scientific research to advance development, and so what materials to do when the equipment began to study too late." Du Shanyi said.