The thermal decomposition processes of(MgCO3)4·Mg(OH)2·5H2O(MCH),5ZnO·2CO3·4H2O(ZCH),NiCO3·2Ni(OH)2·4H2O(NCH),PbCO3(LC)and [Cr(OH)5]2·CO3·8H2O(CC)were studied ...The thermal decomposition processes of(MgCO3)4·Mg(OH)2·5H2O(MCH),5ZnO·2CO3·4H2O(ZCH),NiCO3·2Ni(OH)2·4H2O(NCH),PbCO3(LC)and [Cr(OH)5]2·CO3·8H2O(CC)were studied via TG-DSC.The results of research imply that MCH has the largest capacity of heat absorption and ZCH is second to MCH among the studied materials.The non-isothermal kinetic parameters of MCH and ZCH were calculated by Kissinger and Ozawa methods.Furthermore,thermal decomposition mechanisms of MCH and ZCH were investigated by Coats-Redfern method.Due to the large specific heat capacity,MCH and ZCH are promising to be used as a coolant in extinguishant formulations.展开更多
基金Supported by the Basic Research Foundation of Beijing Institute of Technology(20130242017)the Project Foundation of State Key Laboratory of Explosion Science and Technology(Beijing Institute of Technology)(YBKT16-09)
文摘The thermal decomposition processes of(MgCO3)4·Mg(OH)2·5H2O(MCH),5ZnO·2CO3·4H2O(ZCH),NiCO3·2Ni(OH)2·4H2O(NCH),PbCO3(LC)and [Cr(OH)5]2·CO3·8H2O(CC)were studied via TG-DSC.The results of research imply that MCH has the largest capacity of heat absorption and ZCH is second to MCH among the studied materials.The non-isothermal kinetic parameters of MCH and ZCH were calculated by Kissinger and Ozawa methods.Furthermore,thermal decomposition mechanisms of MCH and ZCH were investigated by Coats-Redfern method.Due to the large specific heat capacity,MCH and ZCH are promising to be used as a coolant in extinguishant formulations.