Self-Healing Polymer Nanocomposite Materials by Joule Effect

Orellana, Jaime; Moreno‐Villoslada, Ignacio; Bose, Ranjita K.; Picchioni, Francesco; Flores, Mario E.; Araya-Hermosilla, Rodrigo

doi:10.3390/polym13040649

Cited by 39 publications

(34 citation statements)

References 123 publications

(132 reference statements)

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“…In addition to understanding and altering the rate at which Sylgard 184 cures, evaluating the material performance over its lifetime is necessary for its safe and predictable use. Because of its ubiquity and wide range of applications, Sylgard 184, often referred to in the literature as PDMS, has been extensively studied with regards to its material properties, including how its behavior changes when combined with fillers and other polymers to make composites; these span many cutting-edge materials such as shape memory elastomers [ 19 , 20 , 21 , 22 , 23 , 24 ] and wearable electronics [ 25 , 26 ]. Despite the plethora of research conducted on PDMS and PDMS composites, there has been much less focus on investigating how the performance of Sylgard 184 changes over time.…”

Section: Introductionmentioning

confidence: 99%

Long-Term Thermal Aging of Modified Sylgard 184 Formulations

et al. 2021

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Primarily used as an encapsulant and soft adhesive, Sylgard 184 is an engineered, high-performance silicone polymer that has applications spanning microfluidics, microelectromechanical systems, mechanobiology, and protecting electronic and non-electronic devices and equipment. Despite its ubiquity, there are improvements to be considered, namely, decreasing its gel point at room temperature, understanding volatile gas products upon aging, and determining how material properties change over its lifespan. In this work, these aspects were investigated by incorporating well-defined compounds (the Ashby–Karstedt catalyst and tetrakis (dimethylsiloxy) silane) into Sylgard 184 to make modified formulations. As a result of these additions, the curing time at room temperature was accelerated, which allowed for Sylgard 184 to be useful within a much shorter time frame. Additionally, long-term thermal accelerated aging was performed on Sylgard 184 and its modifications in order to create predictive lifetime models for its volatile gas generation and material properties.

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Section: Introductionmentioning

confidence: 99%

Long-Term Thermal Aging of Modified Sylgard 184 Formulations

et al. 2021

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“…Therefore, a set of methods could be used in parallel, such as direct (TEM, SEM) and indirect (probe adsorption, SAXS, NMR cryoporometry, DSC thermoporometry, etc.) methods [9,28,31,[54][55][56][64][65][66][74][75][76][77][78][79][80][81][82][83][84][85][86][87]111,[114][115][116][117][118][119][120][121][122][123][124][125][126][127][128][129][130]. More accurate results can be obtained if several methods are used in parallel (e.g., SAXS and adsorption).…”

Section: Resultsmentioning

confidence: 99%

Polymer Adsorbents vs. Functionalized Oxides and Carbons: Particulate Morphology and Textural and SurfaceCharacteristics

Гунько

2021

Polymers

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Various methods for morphological, textural, and structural characterization of polymeric, carbon, and oxide adsorbents have been developed and well described. However, there are ways to improve the quantitative information extraction from experimental data for describing complex sorbents and polymer fillers. This could be based not only on probe adsorption and electron microscopies (TEM, SEM) but also on small-angle X-ray scattering (SAXS), cryoporometry, relaxometry, thermoporometry, quasi-elastic light scattering, Raman and infrared spectroscopies, and other methods. To effectively extract information on complex materials, it is important to use appropriate methods to treat the data with adequate physicomathematical models that accurately describe the dependences of these data on pressure, concentration, temperature, and other parameters, and effective computational programs. It is shown that maximum accurate characterization of complex materials is possible if several complemented methods are used in parallel, e.g., adsorption and SAXS with self-consistent regularization procedures (giving pore size (PSD), pore wall thickness (PWTD) or chord length (CLD), and particle size (PaSD) distribution functions, the specific surface area of open and closed pores, etc.), TEM/SEM images with quantitative treatments (giving the PaSD, PSD, and PWTD functions), as well as cryo- and thermoporometry, relaxometry, X-ray diffraction, infrared and Raman spectroscopies (giving information on the behavior of the materials under different conditions).

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“…Recent reviews discuss various strategies for the fabrication of self‐healing NCs. [ 87,88 ] The ability to fully restore the dielectric strength and electrical properties of dielectric polymers following electrical degradation opens up new possibilities for the development of smart polymers.…”

Section: Electrical Characterizationmentioning

confidence: 99%

Dielectric polymer nanocomposites: Past advances and future prospects in electrical insulation perspective

Pandey

Singh

2021

SPE Polymers

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Polymeric materials enjoy widespread acceptance among electrical insulation design engineers due to their multi‐functional attributes (e.g., excellent dielectric properties, high strength to weight ratio, and ease of molding). However, charge accumulation at the high DC field, poor discharge resistance, low thermal conductivity, limited‐service temperature range, and inadequate stiffness have proven to be severe obstructions to far‐reaching utilization of these materials. To ensure the reliability of today's electrical power systems, novel dielectric materials with enhanced functionalities are essential. An idea that originated under the name of polymer nanocomposites (PNCs) is supposed to provide a viable solution to the challenges mentioned earlier. PNCs are made by mixing a small quantity of nanometer‐sized fillers into a polymer matrix and dispersing them uniformly. To effectively use PNCs in electrical insulation for power apparatus, extensive research into the physical and chemical phenomena associated with these new materials is required. This article aims to provide a comprehensive review of previous research on dielectric PNCs, including synthesis, electrical and nonelectrical characterization, and attendant issues from an electrical insulation standpoint.

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Self-Healing Polymer Nanocomposite Materials by Joule Effect

Cited by 39 publications

References 123 publications

Long-Term Thermal Aging of Modified Sylgard 184 Formulations

Long-Term Thermal Aging of Modified Sylgard 184 Formulations

Polymer Adsorbents vs. Functionalized Oxides and Carbons: Particulate Morphology and Textural and SurfaceCharacteristics

Dielectric polymer nanocomposites: Past advances and future prospects in electrical insulation perspective

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