In the late 1950s, a novel crystalline graft copolymer with carbon chain and heterochain was developed.
In the early 1960s, the gelation effect of graft copolymerization, interfacial compatibilization effect of blends containing grafted macromolecules and toughening mechanism were put forward. A new type of high impact strength plastic has been successfully developed, which meets the urgent needs of military and civil use, and the first pilot plant of rubber graft copolymerization-blending toughening plastic in China has been established.
The scientific research achievements since the end of 1970s are mainly in three aspects:
1. Study on the relationship between microstructure and properties of carbon fiber and carbon/carbon composites. At that time, there was no relevant report at home and abroad, but this kind of research has great guiding significance and promoting effect on the development, production and application of carbon fiber and its composites, and it is the key technology to solve the urgent need of new materials for strategic weapons in China. Therefore, it won the Science and Technology Achievement Award from 1978 to 1979, and the third prize of the National Natural Science Award from 1982. 65438-0983 participated in the international conference on carbon fiber application organized by UNIDO in Brazil, and introduced the development of carbon fiber and its composites in China to the world, which was appreciated by the experts attending the conference. Professor Zeng was hired as an expert consultant of UNIDO and participated in the acceptance of the carbon fiber production line supported by UNIDO in Brazil.
2. The interfacial characteristics of carbon fiber reinforced thermoplastic resin were studied for the first time in China. He systematically studied the microstructure, interface effect and hybrid effect of high-performance thermoplastic resin and its blend system, thermosetting acetylene-terminated sulfone (ATS)/ thermoplastic polymer semi-interpenetrating network blend system and its carbon fiber or hybrid fiber (carbon fiber/glass fiber) reinforced composites, and the relationship between the optimal design of interface layer and its properties and application characteristics. The mechanism that various fibers induce crystalline polymers (such as PPS, PEEK, etc.) to form transgranular interface effect is put forward for the first time. ), and this achievement has been praised by colleagues at home and abroad and cited many times. Just as it was once pointed out in the National Natural Science Foundation's major project "Study on Microstructure and Properties of Composite Materials" that it was accepted and evaluated as "A" by the expert group, the creative research achievements in the formation, control and mechanism of interface layer, interface microstructure and macro-properties, and composite technology of crystalline polymer-based composites are in the international advanced position. The research achievements he and his collaborators have made on the microstructure of carbon fiber and composite materials for more than ten years are also reflected in his monograph Microscopic Images of Carbon Fiber and Composite Materials (Chinese and English version). This monograph has been well received by experts at home and abroad, and won the first prize of scientific and technological progress of the State Education Commission (Class A) 199 1. Zeng et al. also used CF/PPS composite instead of high-strength alloy steel for the first time, and successfully manufactured the rotating disk of high-speed internal combustion engine of airplane model and the wind cup for severe weather forecast which can withstand the wind speed of 90 meters per second. Good results have been achieved in manufacturing chemical and textile machinery parts with high temperature resistance, corrosion resistance, friction reduction and wear resistance. These research achievements have successively won the second prize of scientific and technological progress awarded by the State Education Commission from 65438 to 0986. The national key science and technology project "Composite Interface and Nonlinear Structure Design" won the third prize of Chinese Academy of Sciences 1992. In addition, he also successfully studied a variety of new conductive composites based on thermoplastic polymers, and found for the first time that conductive composites showed two-step percolation characteristics, thus obtaining a wider and more stable processing range. He applied for two invention patents. The research on a new type of high-performance semi-interpenetrating polymer network reveals for the first time the reaction plasticization during the formation of semi-IPN, as well as the compatibility, microphase separation, optimal design of interface layer and interface stability mechanism of this kind of system, and won the second prize of Guangdong Natural Science 1994.
3. Preparation of activated carbon fiber by functionalization of carbon fiber. He put forward the carbonation-activation mechanism of various organic fibers, the relationship between the structure and properties of activated carbon fibers and the adsorption mechanism of different substances, and developed the "technology of treating industrial wastewater containing phenol with activated carbon fibers", which won the invention patent of China. This research achievement won the second prize of Guangdong Natural Science Award 1989. At the same time, the functionalization of macromolecular reaction and graft copolymerization of various organic fibers was studied to prepare new ion exchange fibers and chelating fibers. Two kinds of functional fibers with redox effect on precious metal ions were discovered for the first time, and their redox adsorption mechanism was put forward. A variety of functional fibers for environmental protection and resource recovery were developed, and remarkable results were achieved. Obtained two national invention patents and several utility model patents. The research of functional fiber has also received strong support and close cooperation from his wife Professor Lu Yun. Lu Yun is also a polymer chemist. They were classmates in college and during the Soviet Union. The common ideal and persistent pursuit of career make them lifelong partners.