Plasma-electrified repair of damaged polymer composites for surface crack healing and insulation recovery

Zhu, Xi; Xu, Jingang; Cui, Xinglei; Zhou, Renwu; Zhou, Rusen; Liu, Feng; Fang, Zhi; Cullen, Patrick J.; Ostrikov, Kostya

doi:10.1016/j.cej.2022.137754

Cited by 19 publications

(7 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, the innovative healing strategies should be developed to broaden the development direction. Zhu et al [126] developed a plasma technique to heal surface cracks and promote insulation recovery of electrical damaged polymer composites. They investigated a plasma electro heal method based on Ar/H 2 O/alkoxysilane (PMDMS) low temperature.…”

Section: Innovative-contactless Healing Of Insulation Cracksmentioning

confidence: 99%

“…Meanwhile, the capsule-based targeted healing technique is a key innovative Reproduced with permission. [126] Copyright 2022, Elsevier. b) Development and self-healing mechanism of electrical tree, breakdown strength test after healing.…”

Section: Novel-targeted Healing Of Insulation Cracksmentioning

confidence: 99%

Section: Potentially Viable Mechanism To Solve Electrical Damagementioning

confidence: 99%

“…Figure 14. a) Forming, damaging and self-healing of samples, flashover voltage test before and after self-healing, self-healing mechanism of the samples.Reproduced with permission [126]. Copyright 2022, Elsevier.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Rising of Dynamic Polyimide Materials: A Versatile Dielectric for Electrical and Electronic Applications

et al. 2023

View full text Add to dashboard Cite

Polyimides (PIs) are widely used in circuit components, electrical insulators, and power systems in modern electronic devices and large electrical appliances. Electrical/mechanical damage of materials are important factors that threaten reliability and service lifetime. Dynamic (self‐healable, recyclable and degradable) PIs, a promising class of materials that successfully improve electrical/mechanical properties after damage, are anticipated to solve this issue. The viewpoints and perspectives on the status and future trends of dynamic PI based on a few existing documents are shared. The main damage forms of PI dielectric materials in the application process are first introduced, and initial strategies and schemes to solve these problems are proposed. Fundamentally, the bottleneck issues faced by the development of dynamic PIs are indicated, and the relationship between various damage forms and the universality of the method is evaluated. The potential mechanism of the dynamic PI to deal with electrical damage is highlighted and several feasible prospective schemes to address electrical damage are discussed. This study is concluded by presenting a short outlook and future improvements to systems, challenges, and solutions of dynamic PI in electrical insulation. The summary of theory and practice should encourage policy development favoring energy conservation and environmental protection and promoting sustainability.

show abstract

Section: Innovative-contactless Healing Of Insulation Cracksmentioning

confidence: 99%

Section: Novel-targeted Healing Of Insulation Cracksmentioning

confidence: 99%

Section: Potentially Viable Mechanism To Solve Electrical Damagementioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Rising of Dynamic Polyimide Materials: A Versatile Dielectric for Electrical and Electronic Applications

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Different polymers such as polyethylene (PE), poly(methyl methacrylate) (PMMA), epoxy resin (ER), and silicone rubber (SiR) have become indispensable key materials in the field of power systems, machinery manufacturing, and food packaging due to their respective characteristics. , Especially in electrical engineering, the surfaces of these polymer insulations are affected by multiple challenges such as UV radiation, environmental erosion, and overvoltage flashover. Therefore, improving the insulating surface with specific properties has become a research hotspot in the past several decades.…”

Section: Introductionmentioning

confidence: 99%

Rapid Evaluation of Material Surface Modification by a Dielectric Barrier Discharge Based on Fluorescence Coloring and Image Processing Technologies

Zhu

Guan

et al. 2022

ACS Appl. Mater. Interfaces

Self Cite

View full text Add to dashboard Cite

In recent years, improving the surface properties of large-scale insulation by plasma modification has attracted extensive attention with the development of power systems and high-tech industries. However, routine evaluations of the modification effect and uniformity require complicated tests after the plasma is powered off, which waste a lot of time and cannot regulate the modification effect online. In this study, a novel fluorescence-assisted dielectric barrier discharge (DBD) for fabricating a functional film is developed, and a rapid evaluation method of the modification effect and uniformity is proposed based on fluorescence coloring and image processing technologies. The results show that the addition of an organic fluorescent agent in the DBD with hexamethyldisiloxane (HMDSO) has no negative effect on the plasma discharge and modification effect, and the fluorescence-assisted DBD successfully fabricates the functional films with typical chromogenic groups (N−H and S�O) that exhibit typical fluorescence under an UV lamp. According to image processing and parameter extraction, the plasma-assisted fluorescent film is converted into a two-dimensional (2D) color map with nine color levels, and three characteristic parameters are proposed to evaluate the modification effect rapidly and directly. It shows that the warmer the color of the treated sample, the better the hydrophobicity and electrical insulating properties, where the red region represents the optimally modified surface, while the blue region represents the worst one. The area, shape, and integrity of the plasma modification are clarified quantificationally, which provides the possibility of further online evaluation of the modification effect and uniformity by the plasma treatment.

show abstract

Impact of plasma‐treated nano‐alumina on the thermal and electrical properties of epoxy resin at elevated temperatures

Dai,

Liu,

Xing

et al. 2024

Polymer Composites

View full text Add to dashboard Cite

In this study, to ramp up the thermal stability and insulation characteristics of epoxy resin (EP), the plasma‐treated EP/alumina composites with a mass fraction of 1 wt% were fabricated. The variations of functional groups in the EP composites with/without plasma treatment were characterized by Fourier transform infrared spectroscopy (FTIR), and the glass transition temperature of the specimens was analyzed by differential scanning calorimetry (DSC) analysis. The space charge distributions, the electrical conductivity and DC breakdown strength of the specimens were measured at 90°C. Moreover, the results were further analyzed in depth. The results indicated that the nanocomposites prepared with plasma‐treated nano‐alumina exhibited a higher concentration of OH and CO groups. At 90°C, the plasma‐treated alumina nanoparticles significantly increased the charge injection threshold of EP from about 26 nC (untreated) to 19 nC (treated); reduced the internal electric field distortion, decreased the charge accumulation and dissipation, and increased the breakdown strength from about 104 kV/mm (untreated) to 115 kV/mm (treated), and the conductivity from about 5.1 × 10−14 S/m (untreated) to 3.1 × 10−14 S/m (treated). In summary, it was elucidated that plasma‐treated nano‐alumina particles could effectively reduce deep trap density, trapped charges, charge injection and transportation and reinforce composites' insulation performance at high temperatures.Highlights The DBD plasma treatment is environmentally friendly with high efficiency. The testing adopted advanced characterization and analysis techniques. Plasma treatment of alumina nanoparticles enhanced the thermal stability. The treated nano‐alumina reinforced insulation performance of EP nanocomposites. The plasma treatment raised the space charge injection threshold and barrier.

show abstract

Plasma-electrified repair of damaged polymer composites for surface crack healing and insulation recovery

Cited by 19 publications

References 38 publications

Rising of Dynamic Polyimide Materials: A Versatile Dielectric for Electrical and Electronic Applications

Rising of Dynamic Polyimide Materials: A Versatile Dielectric for Electrical and Electronic Applications

Rapid Evaluation of Material Surface Modification by a Dielectric Barrier Discharge Based on Fluorescence Coloring and Image Processing Technologies

Impact of plasma‐treated nano‐alumina on the thermal and electrical properties of epoxy resin at elevated temperatures

Contact Info

Product

Resources

About