Recently, the Institute of Nuclear Energy Safety Technology, Hefei Academy of Material Sciences, Chinese Academy of Sciences has made new progress in the toughening of epoxy resin neutron shielding materials with metal organic frameworks (MOFs): porous nano-MOFs modified with amino functional groups (UiO-66 / UiO- 66-NH2) particles and epoxy resin (EP) are chemically blended to form an interpenetrating network, a composite shielding material with excellent shielding effect and comprehensive mechanical properties is synthesized, and the relationship between the microstructure and mechanical behavior of the epoxy resin composite material is established, Related results were published in the international journal Materials Letters. Epoxy resin (EP) has the characteristics of resistance to neutron radiation damage, acid and alkali corrosion and high strength. It has important applications in lightweight neutron shielding materials and coil insulation protection in the field of nuclear energy. Because the cross-linking density of the epoxy resin polymer chain is too high, it is difficult to slide under external load, and brittle fracture is easy to occur. How to enhance the toughness and improve the comprehensive mechanical properties of the material on the basis of ensuring the high strength of the material is a major challenge for the application of epoxy resin in the integrated structure and function of advanced nuclear energy system shielding materials. The researchers prepared MOF / epoxy resin composite materials, and analyzed and proposed three toughening mechanisms, namely, porous MOF and epoxy resin form an interpenetrating network, the amino group in MOF forms a chemical bond with the epoxy group of the resin, and the nanometer of MOF itself Size effect. The research results show that the tensile properties and hardness of the shielding materials are effectively improved, and their service safety is guaranteed. Related research results provide a new way for the development of lightweight and high-performance neutron shielding materials for advanced nuclear energy systems. The research work was supported by the National Natural Science Foundation of China, the Hundred Talents Program of the Chinese Academy of Sciences, and the Natural Science Foundation of Anhui Province. Wall Build In Electric Fireplace Wall Build In Electric Fireplace,Wall Recessed Fireplace,Fake Fire Electric Heater,Wood Logs Electric Fireplace JINAN LODOR CNC EQUIPMENT CO.,LTD , https://www.zgfireplace.com
MOFs / EP composite tensile strength, elongation at break and Shore hardness