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Successful development of a new high-temperature resistant resin

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Recently, Professor Lin Jiaping's team from East China University of Science and Technology has made a breakthrough in the design method of high-temperature resistant resins, establishing a material genome method suitable for high-performance polymer design, greatly accelerating the research and development rate of resins, and is expected to change the traditional material design method mainly based on trial and error. This work was published in Chem Mater.

High temperature resistant resin has a wide range of applications in the aerospace industry due to its lightweight and high-strength advantages. However, the development of supporting resins is still relatively lagging behind, becoming a bottleneck that restricts the improvement of composite material performance. The current question is: can the temperature of resin usage be further increased, and can the speed of resin replacement be further accelerated to meet the further needs of the aerospace industry? However, there is a common contradiction between improving heat resistance and reducing curing temperature in the design of thermosetting resins, which poses great difficulties for the design of high-temperature resistant resins.   

The material genetic engineering method developed in this research work includes steps such as gene definition, collection and combination, performance prediction, structural screening, and performance validation. Gene definition, collection, and combination are used to enhance the feasibility of synthesis. Chemical monomers used for synthesis are defined as genes and combination screening is performed. Performance prediction is the foundation of rapid screening. Through data mining, physical quantities that can represent thermal stability and curing temperature have been identified, laying a theoretical foundation for rapid screening of resins with good thermal stability and low curing temperature. The structure screening proposes a two-step strategy of "coarse screening first, and then selection", which first calculates the low-cost agent quantity. Through the first step of screening, the number of candidate resins is reduced, and then through the calculation of high-cost agent quantity, the optimal resin is found, improving the screening efficiency. Through the above steps, researchers have successfully designed and obtained a new type of high-temperature resistant resin, with a 5% thermal decomposition temperature greater than 650 ℃ and a curing temperature less than 250 ℃. It is expected to be used for a short period of time at 600 ℃ and meet the demand for high-temperature resistant resins in the aerospace industry.

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