Tissue-inducing materials for the induction of ligament and central nervous system regeneration, carbon fiber composite materials for the production of suspensions for magnetic levitation trains, smart materials for 4D printing, and a series of new material technological achievements, recently held in Changchun in the 19th Presented at the Advanced Materials Innovation Exhibition of the Association for Science and Technology Annual Conference.
"The man-made material is put into the human body to induce the regeneration of ligaments and central nervous tissues." This seemingly sci-fi blocky concept is the "organization-inducing biological material" exhibited by Zhang Xingdong, an academician of the Chinese Academy of Engineering. He said that when the concept was just put forward, many experts at home and abroad thought it was "a fantasy" and how could the ligaments and central nervous system induce regeneration? However, after the unremitting efforts of the Zhang Xingdong team, the "science fiction" has become a reality, and China's leading biological materials have also entered the international leading ranks.
Zhang Xingdong said: "In this field, China currently occupies an international advanced level, but 'occupy' means 'do not work hard,' because the competition for international research is fierce. If we can seize this opportunity, after 10-15 years, China can create a brand new biomaterials industry and play a leading role in international research.â€
This seemingly sophisticated material can also be used by ordinary people. For example, he said that the current international price of bone-inducing materials is 2 grams of more than 8,000 yuan, while the price of tenders in China is only 2,000 yuan, so localization can be achieved as soon as possible to benefit more ordinary patients.
“Our booth is the most technologically advanced.†Fang Yaning, an academician of the Chinese Academy of Sciences, stood by a giant black box. What he brings is the "black technology" of high-speed trains, which is called "the four new inventions in China" - suspension racks for exhibition trains. Unlike conventional suspension frames, they are designed to use carbon fiber composite materials to reduce weight by 39% compared to the original metal structure and increase seismic performance by 60%.
Speaking of the difficulty of designing Fang Fanging, one year ago, CRRC Group found many companies designed this equipment, but none of them “take orders†because composite materials are used as load-bearing materials on suspension frames, and the degree of difficulty is doubled. German companies can achieve it. At that time, Beijing Institute of Technology took over this "hard bone."
“After more than a year of hard work, colleges and universities have both material talents and design talents, and finally designed the structure for the first time in China,†Fang said.
He predicts that composite materials will continue to dominate the field of materials science before light metal materials become widespread. In the past, composite materials were mainly used in the aerospace industry. With the development of new energy vehicles, the lightweight of the vehicle body can extend the mileage of the vehicle's battery. Therefore, the outlook for composites is very good.
On the stand of Harbin Institute of Technology, the 4D-printed heart stent can be automatically opened under magnetic guidance and degraded and absorbed by the body after 6 months. The project leader Cold Jinsong, director of the Institute of Composite Materials and Structures, Harbin Institute of Technology's Institute of Astronautics, said that their smart materials have reached the international advanced level, especially in aerospace applications, and can go hand in hand with the United States.
"In recent years, the emergence of a large number of new materials is inseparable from the country's transformation of scientific and technological achievements. Many military science and technology have gone to the market through military and civilian integration," said Leng Jinsong.
According to Gao Zhiqiang, vice chairman and general manager of China Aerospace Science and Industry Corporation and Aerospace Haiying (Zhenjiang) Special Materials Co., Ltd., the rapid development of new materials in China is driven by market demand. The manufacture of large-scale aircraft C919 has led to a The application and innovation of approved new materials, with the promotion of China's innovation strategy, these materials have "broken out". (Reporters Li Shuangxi, Meng Qiqi)
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