在甲基乙烯基硅橡胶生胶中分别加入氢氧化铝阻燃剂和氢氧化铝/磷氮复配阻燃剂,制得两种热硫化阻燃硅橡胶。考察了氢氧化铝用量对硅橡胶阻燃性能的影响,并研究氢氧化铝中引入磷氮阻燃剂对硅橡胶物理性能的影响。结果表明,当氢氧化铝的用...在甲基乙烯基硅橡胶生胶中分别加入氢氧化铝阻燃剂和氢氧化铝/磷氮复配阻燃剂,制得两种热硫化阻燃硅橡胶。考察了氢氧化铝用量对硅橡胶阻燃性能的影响,并研究氢氧化铝中引入磷氮阻燃剂对硅橡胶物理性能的影响。结果表明,当氢氧化铝的用量为110份时,硅橡胶阻燃等级FV-0,极限氧指数43%,邵尔A硬度68度,拉伸强度4.5 MPa,拉断伸长率269%,撕裂强度12.5 k N/m;当氢氧化铝/氮磷复配阻燃剂用量为75份时,硅橡胶阻燃等级FV-0,硅橡胶极限氧指数36%,邵尔A硬度55度,拉伸强度5.9 MPa,拉断伸长率480%,撕裂强度17.2 k N/m。,采用氢氧化铝/磷氮复配阻燃剂比单纯采用氢氧化铝阻燃剂的硅橡胶性能有所提高。展开更多
To improve the safety of lithium-ion batteries,dimethyl methyl phosphonate(DMMP) was used as a flame-retardant additive in a LiPF6 electrolyte solution. The flammability and thermal stability of DMMP-containing electr...To improve the safety of lithium-ion batteries,dimethyl methyl phosphonate(DMMP) was used as a flame-retardant additive in a LiPF6 electrolyte solution. The flammability and thermal stability of DMMP-containing electrolyte was investigated by means of burning test and accelerating rate calorimeter. It was found that the flammability and self-heat rate of the electrolyte can be reduced by the addition of DMMP. On the other hand,the electrochemical performances of graphite/LiCoO2 cells become slightly worse after using DMMP additive in the electrolyte. This alleviated trade-off between electrolyte flammability,thermal stability,and cell performance provides a possibility to formulate a nonflammable electrolyte containing DMMP and improve the electrolyte thermal stability with a minimal sacrifice in performance.展开更多
文摘在甲基乙烯基硅橡胶生胶中分别加入氢氧化铝阻燃剂和氢氧化铝/磷氮复配阻燃剂,制得两种热硫化阻燃硅橡胶。考察了氢氧化铝用量对硅橡胶阻燃性能的影响,并研究氢氧化铝中引入磷氮阻燃剂对硅橡胶物理性能的影响。结果表明,当氢氧化铝的用量为110份时,硅橡胶阻燃等级FV-0,极限氧指数43%,邵尔A硬度68度,拉伸强度4.5 MPa,拉断伸长率269%,撕裂强度12.5 k N/m;当氢氧化铝/氮磷复配阻燃剂用量为75份时,硅橡胶阻燃等级FV-0,硅橡胶极限氧指数36%,邵尔A硬度55度,拉伸强度5.9 MPa,拉断伸长率480%,撕裂强度17.2 k N/m。,采用氢氧化铝/磷氮复配阻燃剂比单纯采用氢氧化铝阻燃剂的硅橡胶性能有所提高。
基金Projects(2006A10704003 2006Z3-D2031) supported by the Key Project of Guangdong Province and Guangzhou City, China
文摘To improve the safety of lithium-ion batteries,dimethyl methyl phosphonate(DMMP) was used as a flame-retardant additive in a LiPF6 electrolyte solution. The flammability and thermal stability of DMMP-containing electrolyte was investigated by means of burning test and accelerating rate calorimeter. It was found that the flammability and self-heat rate of the electrolyte can be reduced by the addition of DMMP. On the other hand,the electrochemical performances of graphite/LiCoO2 cells become slightly worse after using DMMP additive in the electrolyte. This alleviated trade-off between electrolyte flammability,thermal stability,and cell performance provides a possibility to formulate a nonflammable electrolyte containing DMMP and improve the electrolyte thermal stability with a minimal sacrifice in performance.
