Composite polymer electrolytes based on mixing soft-segment waterborne polyurethane （WPU） and 1-butyl-3-methylimidazolium bis[（trifluoromethyl）sulfonyl]imide （BMImTFSI） have been prepared and characterized. The ...Composite polymer electrolytes based on mixing soft-segment waterborne polyurethane （WPU） and 1-butyl-3-methylimidazolium bis[（trifluoromethyl）sulfonyl]imide （BMImTFSI） have been prepared and characterized. The addition of BMImTFSI results in an increase of the ionic conductivity. At high BMImTFSI concentration （BMImTFSI/WPU = 3 in weight ratio）, the ionic conductivity reaches 4.27 × 10^-3 S/cm at 30 ℃. These composite polymer electrolytes exhibit good thermal and electrochemical stability, which are high enough to be applied in lithium batteries.展开更多
以离子液体(IL)作为软质聚氨酯泡沫(FPUF)阻燃剂,制备了FPUF/IL复合材料,通过测定氧指数( LOI )、泡孔结构、热稳定性、热释放和残炭情况等参数,分析了PUF/IL与纯PUF材料的阻燃性能。结果表明,1-乙基-3-甲基咪唑三氟乙酸盐([EMIM][TA])...以离子液体(IL)作为软质聚氨酯泡沫(FPUF)阻燃剂,制备了FPUF/IL复合材料,通过测定氧指数( LOI )、泡孔结构、热稳定性、热释放和残炭情况等参数,分析了PUF/IL与纯PUF材料的阻燃性能。结果表明,1-乙基-3-甲基咪唑三氟乙酸盐([EMIM][TA])对FPUF具有较好的阻燃作用,添加量为15%时 LOI 值高达26.6%,加入[EMIM][TA]后FPUF泡孔变小且紧密,材料的残碳量增加,热稳定性提高,点燃时间由纯PUF的11 s延长到74 s,总放热量减小,安全等级提高。展开更多
基金financially supported by the National 863 Program(No.2007AA03Z226)the National Key Program for Basic Research of China(No.2002CB211800 and 2009CB220100).
文摘Composite polymer electrolytes based on mixing soft-segment waterborne polyurethane （WPU） and 1-butyl-3-methylimidazolium bis[（trifluoromethyl）sulfonyl]imide （BMImTFSI） have been prepared and characterized. The addition of BMImTFSI results in an increase of the ionic conductivity. At high BMImTFSI concentration （BMImTFSI/WPU = 3 in weight ratio）, the ionic conductivity reaches 4.27 × 10^-3 S/cm at 30 ℃. These composite polymer electrolytes exhibit good thermal and electrochemical stability, which are high enough to be applied in lithium batteries.
文摘以离子液体(IL)作为软质聚氨酯泡沫(FPUF)阻燃剂,制备了FPUF/IL复合材料,通过测定氧指数( LOI )、泡孔结构、热稳定性、热释放和残炭情况等参数,分析了PUF/IL与纯PUF材料的阻燃性能。结果表明,1-乙基-3-甲基咪唑三氟乙酸盐([EMIM][TA])对FPUF具有较好的阻燃作用,添加量为15%时 LOI 值高达26.6%,加入[EMIM][TA]后FPUF泡孔变小且紧密,材料的残碳量增加,热稳定性提高,点燃时间由纯PUF的11 s延长到74 s,总放热量减小,安全等级提高。
