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Information × Registration Number 0224U033326, (0123U102811) , R & D reports Title Synthesis of aromatic tetranitriles as a universal platform for heat-resistant polymers and composites popup.stage_title Одержання олігомерів (преполімерів) на основі ароматичних тетранітрилів з імплементованими наночастинками Si–B–P Head Volochnyuk Dmytro M., д.х.н. Registration Date 25-12-2024 Organization Institute of Organic Chemistry NAS of Ukraine popup.description1 The project is aimed at significantly expanding the possibilities of creating and using polymer composites with extreme properties by developing a universal platform for binders and a new approach to aromatic nitriles as building blocks for heat-resistant polymers that combine high working temperature, high mechanical strength, and resistance to thermo-oxidative destruction. Currently, Ukrainian researchers and material developers do not have reliable access to binders that provide the creation of polymer composites with a long-term heat resistance limit of 350-450 °C for the aerospace industry, energy, and communication systems. The research plan involves the development of protocols for the synthesis of aromatic tetranitriles, adapted for potential semi-industrial scaling. An economically feasible approach to the synthesis of oligomeric systems, doped with Si-B-P nanoclusters, will be developed. Also, a previously unknown mechanism of partial deactivation of reactive chains of thermo-oxidative destruction through up-conversion energy dissipation of migrating radicals will be studied. Based on the synthesized binders, samples of heat-resistant composites with fibrous and dispersed fillers will be obtained and their characteristics studied popup.description2 In the development of the results obtained at the previous stage of research, the synthesis of monomers containing in the central core of the molecule structural fragments that have the structure of imides of aromatic tetracationic acids was scaled up to multigram quantities. Scalable protocols were developed to produce monomers in multigram quantities. Maintaining suitable viscosity (200–400 Pa·s) at temperatures up to 200 °C, enabled fiber-reinforced and filler-based composites. Based on the results of the synthesis of the initial monomer products, according to the schedule of the second stage of the project, oligomers (prepolymers) based on aromatic tetranitriles with implemented Si–B–P nanoparticles were obtained. Three protocols for the implementation of the process were experimentally developed: 1) separate synthesis of nanoparticles with their introduction of oligomers by mixing; 2) simultaneous synthesis of nanoparticles and oligomer; 3) simultaneous synthesis of nanoparticles and oligomers using high pressures. Product Description popup.authors Kukharenko Svitlana А. Pashchenko Yevhen O. Rozhenko Oleksandr B. Serhii V. Riabukhin Savchenko Denys O. Skorohod Serhii V. Tortykh Tetiana M. popup.nrat_date 2024-12-25 Close