离子液体/乙烯-醋酸乙烯共聚物复合材料的制备与性能

Preparation and Properties of Ionic Liquid and Ethylene-Vinyl Acetate Copolymer Composites

分别将离子液体三正丁基甲铵(双三氟甲磺酰)亚胺盐([TBMA][NTf2])和1-乙基-3-甲基咪唑四氟硼酸盐([EMIM][BF4])与乙烯-醋酸乙烯共聚物弹性体(EVM)熔融共混制备复合材料,研究了离子液体与EVM的相容性及抗静电性能。样品宏观透明性和SEM测试结果显示,[TBMA][NTf2]与EVM具有较好的相容性,相应的EVM/[TBMA][NTf2]复合材料的抗静电效果更好;热重分析(TGA)结果表明,[TBMA][NTf2]促进EVM热解,而[EMIM][BF4]对EVM的热稳定影响较小。室温下在EVM中填加[TBMA][NTf2]的共混物表现出较好的柔性,当[TBMA][NTf2]质量分数为20%时,EVM/[TBMA][NTf2]复合材料的模量为0.58 MPa,断裂伸长率可达到2997%。

Two binary blends of tributylmethylammoniu bis （ trifluoromethanesulfonyl ） imide （ [ TBMA ] [ NTf2 ] ） and ethylene-vinyl acetate copolymer （ EVM ）, 1-butyl-3-methyl-imidazolium tetrafluoroborate （[ EMIM] [ BF4 ] ） and EVM were prepared by melt blending. The blend of EVM and [ TBMA] [ NTf2 ] is fully miscible and shows better anti-static electricity, while the blend of EVM and [ BMIMBF4] is immiscible. In addition, TGA analysis indicated that [TBMA] [ NTf2] promoted EVM pyrogenation, while [ EMIM] [ BF4 ] had little influence on the thermal stability of EVM. EVM filled with [TBMA][NTf2] is flexible at room temperature. The modulus of EVM/[TBMA][NTf2] composite is 0. 58 MPa and the elongation at break is as high as 2997% with 20% mass fraction loading of ionic liquids.