Bis(trifluoromethanesulfonyl)imide-Type Ionic Liquids as Excellent Antistatic Agents for Polyurethanes

Abstract

Surface resistivity (r s ) of polyurethane (PU) films is reduced from 2.1 Â 10 12 to 9.4 Â 10 10 ohm sq À1 by addition of 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide ([C 4 mim][Tf 2 N]) for only 10 ppm. Addition of [Tf 2 N]-type ionic liquids (ILs) for 1 000 ppm leads to the reduction of not only r s from 10 12 to 10 9 ohm sq À1 but also volume resistivity (r v ) from 10 9 to 10 7 ohm cm, suggesting that the ILs are uniformly incorporated into the PU films. These PU films have r s in the order of 10 9 ohm sq À1 even after methanol washing. The antistatic effects are attributed to ionic conductivity of the PU films, which is achieved by low glass transition temperatures of both PU films and [Tf 2 N]-type ILs. These results suggest that [Tf 2 N]-type ILs are excellent antistatic agents for PUs.

Ionic liquids as dispersing agents of graphene nanoplatelets in poly(methyl methacrylate) composites with microwave absorbing properties

“…The higher conductivity of PMMA/C 12 Py.TFSI may be attributed to higher dissociation degree of TFSI anion, as suggested by other authors. 57 The low conductivity of PMMA/C 12 ViPy.TFSI may be due to the low mobility of the polymeric cation size.…”

A Review on General Properties and Applications of Ionic Liquids

“…98 Polyurethanes were also made using the same IL. 99,100 Ionic liquids can also be kneaded into polycarbonate resins and give good flame resistance. N1444 BTA, for example, performed well in polycarbonate (PC), 101 .…”

Effect of interconnected metal skeletons on the tribological properties of polyurethane elastomers

“…Polyurethane (PU) elastomers have been widely used in field of industrial tribology because their properties can be tuned between rubber-like elasticity and plastic-like toughness. [1][2][3][4][5][6] However, owing to the insulating characteristic of PU elastomers (volume resistivity: 10 10 -10 12 Ácm; surface resistivity: $10 12 sq À1 ) 7 and their low heat conductivity, [8][9][10] electrostatic agglomeration or even electrostatic discharge due to friction is easily caused in them, which could lead to accidents and disasters, including fires, explosions, or component breakdowns, among others. 11 In order to suppress or avoid electrostatic discharge in PU elastomers, their resistivity should be reduced; to achieve this, various antistatic agents have been added to PU elastomers.…”