Antistatic effects and mechanism of ionic liquids for methyl vinyl silicone rubber

Abstract

The effect of two ionic liquids (ILs), namely, 1‐allyl‐3‐methyl imidazolium chloride ([AMIM]Cl) and 1‐ethyl‐3‐methyl imidazolium tetrafluoroborate ([EMIM]BF4), on the surface and volume resistivities, mechanical properties, transparency, and water contact angle of methyl vinyl silicone rubber (MVQ) were investigated. The chemical structures of the two ILs before and after heat treatment were characterized by Fourier transform infrared spectroscopy. The morphology and fluorine and chlorine elemental dispersion were characterized by field emission scanning electron microscopy and energy‐dispersive X‐ray spectroscopy mapping, respectively. The antistatic mechanism was revealed. The results show that the MVQ–[EMIM]BF4 composites had lower surface and volume resistivities than the MVQ–[AMIM]Cl composites. The mechanical properties of the MVQ–[EMIM]BF4 and MVQ–[AMIM]Cl composites were slightly lower than those of the pristine MVQ. With increasing [EMIM]BF4 content, the surface and volume resistivities and water contact angle of the MVQ–[EMIM]BF4 composites decreased. When the content of [EMIM]BF4 was 2.0 phr, the MVQ–[EMIM]BF4 composites showed better antistatic performance with lower surface and volume resistivities of 9.6 × 109 Ω and 1.2 × 1011 Ω cm, respectively. The antistatic mechanism of the MVQ–IL composites was ascribed to the synergistic effect of ionic migration and moisture absorption. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45180.

Ionic Liquid–Polymer Composites: A New Platform for Multifunctional Applications

“…To reduce the static electricity and increase the performance of MVQ‐materials for high‐tech applications, ILs were incorporated into the MVQ matrix. [ 168 ] Composites using [EMIM][BF 4 ] showed lower surface and volume resistivities than the ones using [AMIM][Cl]. The incorporation of ILs slightly reduced the mechanical properties of the composites, and with increasing [EMIM][BF 4 ] content, the surface and volume resistivities as well as the water contact angle decreased.…”

“…The effect of two ILs, [AMIM][Cl] and [EMIM][BF 4 ], on the properties of methyl vinyl silicone rubber (MVQ) were evaluated. [ 168 ] MVQ possess high and low‐temperature performance, electrical insulation, high resistance and, thus, have found widely used for high‐tech applications in aviation, the aerospace industry, electronics, etc. However, it generates static electricity, a significant drawback for this type of applications.…”

Ionic Liquids and Calcium Oxide Grafted with Allylmalonic Acid Applied to Support the Peroxide Crosslinking of an Ethylene–Propylene Copolymer

“…Hydrogen bonding between functional groups on the surface of filler and ILs was also proved to enhance the dispersion of the halloysite nanotubes in the elastomer matrix [ 43 ]. No less important is the fact, that ILs can have an antistatic effect, since they are considered to be dispersed and dissociated into ions in the elastomer matrix [ 50 , 51 ]. Another explanation of the positive influence of ILs on the dispersion of coagent in the elastomer matrix could be their lubricating effect, resulting in the surface modification of the nanophase between the particles of coagent and elastomer chains by the ionic liquid [ 52 ].…”

Lightweight Antistatic Thermoplastic Elastomer Blend Foam: The Foaming Behavior and Mechanical Properties

“…Various types of antistatic agents have been applied to be polymer antistatic, such as antistatic agent SN, isotridecyl phosphate, phenol ether phosphate potassium salt NP-10PK, etc. , Besides, Soto-Oviedo et al prepared an ethylene propylene diene monomer (EPDM) and polyaniline/organoclay nanocomposites with good antistatic properties. Ye et al used two ionic liquids (1-allyl-3-methylimidazolium chloride and 1-ethyl-3-methylimidazolium tetrafluoroborate) to treat methyl vinyl silicone rubber (MVQ), which improved the antistatic properties of the samples. So far, most of TPEE antistatic research studies have sued the addition of antistatic agents .…”