Preparation and Characterization of Ca-Fe-Ce-based Nitrate Flame Retardants
CHEN Jiang-chao HAN Ning ZHANG Dong-hai CHAI Yu-lin LIU Hai-di CHEN Yun-fa
Institute of Process Engineering Institute of Process Engineering State Key Laboratory of Multi-Phase Complex Systern, Institute of Process Engineering, CAS State Key Laboratory of Multi-Phase Complex Systern, Institute of Process Engineering, CAS State Key Laboratory of Multi-Phase Complex Systern, Institute of Process Engineering, CAS State Key Lab. Multiphase Complex System, Inst. Process Eng., Chinese Academy of Sciences
Abstract：Novel flame retardants were prepared by mechanochemical method using CaO, Fe(NO3)3×9H20 and Ce(NO3)3×6H2O as starting materials. By means of XRD, TG-DTA and ICP techniques, the obtained products were identified as Ca0.51Fe0.49(OH)2(NO3)0.4×0.69H2O (Ca-Fe LDH) and Ca0.51Fe0.37Ce0.12(OH)2(NO3)0.49×0.59H2O (Ca-Fe-Ce LDH). Using Ca-Fe LDH and Ca-Fe-Ce LDH as flame retardant filler, a series of RTVSR (room temperature vulcanized silicone rubber) composites were prepared. The results showed that when adding 70 g Ca-Fe LDH and Ca-Fe-Ce LDH into 100 g PDMS (polydimethylsiloxane), the tensile strength of the obtained RTV composite was about 4.5 MPa and its LOI (limited oxygen index) near 34.5%. When adding 20 g Ca-Fe-Ce LDH into 100 g PDMS, the resulted composite exhibited excellent smoke inhibition behavior with the smallest smoke density of 8.46.
2009, Vol. 9 
