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›› 2009, Vol. 9 ›› Issue (5): 999-1004.

• 材料工程专栏 • Previous Articles     Next Articles

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   

  1. 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
  • Received:2009-05-11 Revised:2009-05-22 Online:2009-10-20 Published:2009-10-20
  • Contact: CHEN Yun-fa

Ca-Fe-Ce基硝酸盐阻燃抑烟型阻燃剂的制备与性能表征

陈江超 韩宁 张冬海 柴林玉 刘海弟 陈运法   

  1. 中国科学院过程工程研究所 中国科学院过程工程研究所 中国科学院过程工程研究所多相复杂系统国家重点实验室 中国科学院过程工程研究所多相复杂系统国家重点实验室 中国科学院过程工程研究所多相复杂系统国家重点实验室 中国科学院过程工程研究所
  • 通讯作者: 陈运法

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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.

Key words: mechanochemistry, ayered double hydroxide, room temperature vulcanized silicone rubber, fire-retardant, smoke inhibition

摘要： 以CaO, Fe(NO3)3×9H2O和Ce(NO3)3×6H2O为原料，采用机械化学法制备了钙铁层状金属氢氧化物和钙铁铈层状金属氢氧化物. 以XRD和热重分析表征了产物的结晶结构及热分解行为，结合ICP光谱测定，推测产物的化学组成分别为Ca0.51Fe0.49(OH)2(NO3)0.49×0.69H2O和Ca0.51Fe 0.37Ce 0.12(OH)2(NO3)0.49×0.59H2O. 将上述产物作为功能填料加入室温硫化硅橡胶，其添加量为0.7 g/g时，复合材料的拉伸强度达到4.5 MPa，氧指数约为34.5%，具有良好的阻燃性能和力学性能，优于常规的Mg(OH)2和镁铝层状金属氢氧化物. 含有0.2 g/g钙铁铈层状金属氢氧化物的室温硫化硅橡胶复合材料最大烟密度为8.46，抑烟性能优异.

关键词: 机械化学, 层状金属氢氧化物, 室温硫化硅橡胶, 阻燃, 抑烟