Self-healing of abrasion damage on epoxy resin controlled by ionic liquid

Saurín, N.; Sanes, J.; Carrión, F.J.; Bermúdez, Marı́a-Dolores

doi:10.1039/c6ra05503f

Cited by 35 publications

(35 citation statements)

References 39 publications

(42 reference statements)

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“…The addition of DCi reduces the glass transition temperature (T g ) of the epoxy resin in around 10°C, thus showing the plasticizing effect of the PIL fluid phase which would act as internal lubricant enhancing the chain mobility of the polymer. This is in agreement with previous results obtained for epoxy resin modified by the addition of APILs [29,38,47]. However, in this case the reduction in the glass transition tem- perature is lower than the 23°C reduction observed for ER+9%APIL (APIL = 1-octyl-3-methylimidazolium tetrafluoroborate) [47].…”

Section: Study Of Pil Distribution In the Epoxysupporting

confidence: 92%

“…This is in agreement with previous results obtained for epoxy resin modified by the addition of APILs [29,38,47]. However, in this case the reduction in the glass transition tem- perature is lower than the 23°C reduction observed for ER+9%APIL (APIL = 1-octyl-3-methylimidazolium tetrafluoroborate) [47]. This difference could be due to the high miscibility of the long alkyl chain substituted imidazolium derivative with the epoxy matrix.…”

Section: Study Of Pil Distribution In the Epoxysupporting

confidence: 92%

“…Table 3 and Figure 7 show the storage modulus (E′) (Figure 7a), loss modulus (E″) (Figure 7b) and the loss or dissipation factor, tan δ (E″/E′) (Figure 7c), determined by dynamic mechanical analysis (DMA). The addition of a 9 wt% DCi reduces the storage and loss moduli and the tan δ values with respect to ER [47], while displacing the maximum tan δ temperature to a higher value, from 70.9°C for ER [47] to 76.1 for ER+DCi.…”

Section: Study Of Pil Distribution In the Epoxymentioning

confidence: 97%

“…This result could have anticipated a similar wear resistance of the nanocomposites with respect to the neat epoxy resin. The addition of a conventional aprotic imidazolium IL to epoxy resin has been shown to generate soft materials with a self-healing ability after abrasion [39,47]. Table 3 and Figure 7 show the storage modulus (E′) (Figure 7a), loss modulus (E″) (Figure 7b) and the loss or dissipation factor, tan δ (E″/E′) (Figure 7c), determined by dynamic mechanical analysis (DMA).…”

Section: Study Of Pil Distribution In the Epoxymentioning

confidence: 99%

“…The surface was cleaned with ethanol and dried in air before XPS analysis. Figure 2 show the evolution of the curing process with time, comparing the previously described [47] neat epoxy resin, cured with the Table 1. Although both PIL and APIL ionic liquids act as hardening agents, the new PIL DCi is more efficient from the early stage to the final almost complete curing after 60 minutes, with a 0.9 J/g residual enthalpy.…”

Section: Introductionmentioning

confidence: 99%

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Self-lubricating, wear resistant protic ionic liquid-epoxy resin

Avilés¹,

Saurín²,

Espinosa³

et al. 2017

Express Polym. Lett.

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Abstract.A new self-lubricating, wear resistant epoxy resin material (ER+DCi) has been obtained by addition of a 9 wt% of the room-temperature protic ionic liquid (PIL) tri-[bis(2-hydroxyethyl)ammonium)] citrate (DCi) to the mixture of the prepolymer and the hardener composed of a mixture of amines. The highly polar tricationic protic ammonium carboxylate ionic liquid shows a high contact angle on the resin surface and distributes inside the epoxy matrix as spheres of around 50 μm in diameter, with a mean density of approximately 38 mm 2 . The presence of the ionic liquid fluid phase inside the cavities has been determined by scanning electron microscopy (SEM) observation of fracture surfaces and Fourier transform infrared spectroscopy (FTIR)-microscopy. The DCi phase reduces the residual curing enthalpy and the glass transition temperature, as determined by DSC, without significantly changing microhardness or electrical resistivity values. Dynamic mechanical analysis (DMA) shows that DCi reduces storage modulus, loss modulus and tan δ values. The tribological performance of the new material has been compared with that of the neat epoxy resin under pin-on-disc sliding conditions. ER+DCi shows more than 50% reduction of the friction coefficient with respect to neat epoxy resin, and a polished surface, in contrast with the severe wear that takes place in the case of neat epoxy resin. A self-lubrication mechanism by release of the ionic liquid lubricant under load is proposed.

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Section: Study Of Pil Distribution In the Epoxysupporting

confidence: 92%

Section: Study Of Pil Distribution In the Epoxysupporting

confidence: 92%

Section: Study Of Pil Distribution In the Epoxymentioning

confidence: 97%

Section: Study Of Pil Distribution In the Epoxymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Self-lubricating, wear resistant protic ionic liquid-epoxy resin

Avilés¹,

Saurín²,

Espinosa³

et al. 2017

Express Polym. Lett.

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

Correia

Fernandes

Martins

et al. 2020

Adv Funct Materials

220

201

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Ionic liquids (ILs) have emerged as a novel class of chemical compounds for the development of advanced (multi)functional materials with outstanding potential in applications of several areas due to their unique properties and functionalities. The combination of ILs with polymers, in a composite, allows for developing smart materials, which synergistically combine the features of specific polymers and ILs. Moreover, ILs can be extensively modified by the incorporation of functional groups with specific properties into the cation, anion, or both. Thus, it is possible to tune the IL, the polymer, or both to obtain a broad spectrum of multifunctional composites and address the specific requirements of many applications. This work focusses on advanced materials and strategies concerning ILs and polymers for the development of smart IL/polymer‐based materials for applications including responsive and sensitive sensors, actuators, environment, batteries, fuel cells, and biomedical applications.

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Recent Progress in Self‐healing Materials for Sensor Arrays

Choa

2020

ChemNanoMat

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The recent development of diverse types of self‐healing materials promises increased material lifetimes, reduced replacement costs, and improved product safety in a wide variety of practical engineering applications. In particular, self‐healing materials provide advantages in electronic devices, conductors and sensors, as evidenced by their possible applications such as electronic skin, protectively conductive coating, adhesives, energy storage devices, aerospace, automobile, etc. To further the development of self‐healing materials for sensors and conductors, this review provides a summary of the current work. A short overview of self‐healing concepts and classification are presented, and some of the strengths and weaknesses of each type of self‐healing material are introduced and highlighted, in relation to various sensor applications. A perspective on self‐healing material approaches and development strategies using soft electronic technology is provided.

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Self-healing of abrasion damage on epoxy resin controlled by ionic liquid

Abstract: A conventional epoxy resin thermoset has been modified with ionic liquid concentrations from 7 to 12 wt% to obtain softer, more ductile materials with self-healing ability for surface abrasion damage.

Cited by 35 publications

References 39 publications

Self-lubricating, wear resistant protic ionic liquid-epoxy resin

Self-lubricating, wear resistant protic ionic liquid-epoxy resin

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

Recent Progress in Self‐healing Materials for Sensor Arrays

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