为降低聚氨酯薄膜的表面电阻率，提高其抗静电稳定性。以离子液体（IL）1-羟乙基-3-甲基咪唑双三氟甲基磺酰亚胺盐（[C₂OHmim][Tf₂N]）和多壁碳纳米管（MCNT）为原料，通过物理改性制备不同配比的离子液体-碳纳米管复合材料，并用其改善聚氨酯薄膜的抗静电性能，最终通过溶液涂膜法制得IL-MCNT/PU薄膜。IR、FT-IR分析结果表明，与IL复合后的碳纳米管具有良好的分散性；IL也通过羟基成功固定在聚氨酯基体中。改性后PU膜的表面电阻率降低了6个数量级，当添加IL-MCNT-5时，材料的电阻率由2.1×10¹³ Ω降至2.7×10⁷ Ω，经过10 min超声处理后几乎保持不变。与单一组分离子液体相比，IL-MCNT显示出更好的抗静电稳定性；碳纳米管的加入提高了材料的力学性能。

In order to reduce the surface resistivity of polyurethane film and improve its antistatic stability,ionic liquid-carbon nanotube composite materials with different proportions are prepared from ionic liquid 1-hydroxyethyl-3-methylimidazole bis(trifluoromethanesulfonyl) imide and multi-walled carbon nanotubes (MCNT) through physical modification.Adding the prepared IL-MCNT as antistatic agents,IL-MCNT/PU film finally is prepared by solution coating method.Through IR and FT-IR analysis,the results indicate that the carbon nanotubes modified by IL have a good dispersibility,and IL is also successfully fixed into polyurethane matrix through hydroxyl group.The surface resistivity of the modified PU film has dropped by 6 orders of magnitude.The resistivity of the material decreases from 2.1×10¹³ Ω to 2.7×10⁷ Ω by adding IL-MCNT-5 as antistatic agents,which remains almost unchanged after 10 minutes of ultra-sonication.IL-MCNT/PU film shows better antistatic stability and mechanical properties than IL/PU.The addition of MCNT enhances the mechanical properties of the materials.

陈玮祥(1994-),男,硕士研究生,研究方向为离子液体,627824710@qq.com