An experimental study on multiwalled carbon nanotube nanocomposite piezoresistivity considering the filler agglomeration effects

Darani, Sajad Zarei; Naghdabadi, R.

doi:10.1002/pc.26180

Cited by 16 publications

(7 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This indicates a weakened interface between the rubber matrix and the fluorescent powders, resulting in defects within the sample. These defects may lead to a deterioration of the sample's mechanical properties, [42] consistent with the previously mentioned changes in its mechanical performance.…”

Section: Crosslinking Of Luminescent Elastomerssupporting

confidence: 77%

Recyclable photoluminescent elastomer incorporating carboxyl‐functionalized fluorescent powder via dynamic covalent cross‐linking

et al. 2023

View full text Add to dashboard Cite

The rapid development of photochromic devices has stimulated great enthusiasm for the design and preparation of luminescent materials. Introducing fluorescent powder ZnS:Cu into the cross-linked polymer matrix is an efficient and simple method to obtain photochromic materials with excellent comprehensive performance. However, the traditional method is to directly introduce fluorescent powder into the polymer matrix by physical mixing. This not only increases the internal defects of the polymer and reduces the mechanical properties, but also hinders the fluorescent powder from absorbing external energy and reduces its luminescence efficiency. In addition, few studies have focused on recyclable photochromic luminescent materials. Inspired by dynamic covalent cross-linking technology, this paper first modified fluorescent powder with 3-mercaptopropionic acid and then introduced it into epoxy silicone rubber to prepare recyclable luminescent elastomer. Compared with traditional physical blending, the mechanical properties and luminescence performance of the covalently bonded luminescent elastomer were improved. Excellent mechanical properties and luminescence performance were maintained in multiple recycling processes. This paper provides a feasible and simple scheme for the preparation of recyclable luminescent elastomers, paving the way for the recycling and long-term utilization of photochromic luminescent materials.

show abstract

Section: Crosslinking Of Luminescent Elastomerssupporting

confidence: 77%

Recyclable photoluminescent elastomer incorporating carboxyl‐functionalized fluorescent powder via dynamic covalent cross‐linking

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Therefore, with the addition of more HGB, the ILSS value of the material begins to decline. When it increases to a certain extent, HGB contacts with each other, forming the agglomeration phenomenon, resulting in a large number of defects 45 . And in the molding process of composite sheets, the migration of HGB to the interlayer can no longer form an effective barrier to the expansion of microcracks, but severely damage the bonding ability between the layers of the material, so that the interlayer shear strength decreases rapidly.…”

Section: Resultsmentioning

confidence: 99%

Thermal insulation and mechanical properties of carbon fiber‐reinforced thermoplastic polyphthalazine ether sulfone ketone composites reinforced by hollow glass beads

Feng,

Li,

Wang

et al. 2023

Polymer Composites

View full text Add to dashboard Cite

In the high‐tech field, there is an urgent need for materials that possess thermal insulation, mechanical properties, and processing properties. One promising option is Carbon fiber reinforced thermoplastic composites (CFRTPs), which exhibit excellent characteristics such as light weight, high strength, and high temperature resistance. The effects and mechanisms of hollow glass beads (HGB) on the thermal insulation and mechanical properties of carbon fiber‐reinforced thermoplastic polyphthalazine ether sulfone ketone composites (CF/PPESK) were investigated. The introduction of 15 wt% HGB improved the material's thermal insulation performance by 32.74% perpendicular to the fiber direction and 44.95% parallel to the fiber direction. Furthermore, the addition of 3 wt% HGB increased the interlaminar shear strength, compression strength, and flexural strength by 21.34%, 17.49%, and 5.53%, respectively. Additionally, the dynamic mechanical analysis confirmed that the HGB/CF/PPESK composite has superior high‐temperature mechanical properties, which holds great promise for CFRTPs applications.Highlights Modification of CF/PPESK with HGB improved its thermal insulation properties. Analysis of the mechanism of CF/PPESK for thermal insulation performance. HGB improved the mechanical properties by delaying the expansion of microcracks. Agglomeration of HGB leads to a rapid rise in thermal insulation properties.

show abstract

“…Figure 2C already showed the presence of agglomerates in 1.2 wt% nanocomposites and the agglomeration could also decrease the strain sensitivity of nanocomposites which is also evident from the literature study. [ 43 ] Also, the increased viscosity and lack of free space available for fiber rotation result in improper alignment at higher CNF content. [ 8 ] A similar kind of observation on the effect of filler alignment on piezoresistive sensing of nanocomposites was also reported by Oliva‐Alives et al, where the alignment effect on sensing was found to be more evident at lower filler concentrations.…”

Section: Resultsmentioning

confidence: 99%

Improved damage sensing with random/aligned carbon nanofiber in bulk epoxy and adhesive joints

2022

View full text Add to dashboard Cite

In situ health monitoring of polymeric materials and adhesive joints can be done by adding conductive carbon nanofillers that enable inherent piezoresistive sensing capability in nonconductive polymers. In this study, carbon nanofiber (CNF) was added to epoxy in bulk and adhesive form to investigate their potential applications as strain and crack detection sensors, respectively. Tensile specimens of CNF/epoxy nanocomposites with different filler concentrations were tested to study their strain sensing capability. The nanocomposites were further used as adhesive for sensing crack propagation in adhesive joints. CNFs alignment was carried out inside the adhesive by AC electric field to study the alignment effect on crack detection capability and fracture toughness of joints. Tensile specimens showed excellent strain sensing capability at CNF concentrations of 0.4, 0.8, and 1.2 wt%. However, the gauge factor was found to be highest at 0.4 wt% and decreasing further with increasing CNF content. The CNF addition was found to enhance the crack detection capability as well as the fracture toughness in adhesive joints. Further improvements in the crack detection capability and fracture toughness were observed in the case of aligned nanocomposite joints. However, the effect of alignment was observed to be more profound at lower CNF content.

show abstract

An experimental study on multiwalled carbon nanotube nanocomposite piezoresistivity considering the filler agglomeration effects

Cited by 16 publications

References 34 publications

Recyclable photoluminescent elastomer incorporating carboxyl‐functionalized fluorescent powder via dynamic covalent cross‐linking

Recyclable photoluminescent elastomer incorporating carboxyl‐functionalized fluorescent powder via dynamic covalent cross‐linking

Thermal insulation and mechanical properties of carbon fiber‐reinforced thermoplastic polyphthalazine ether sulfone ketone composites reinforced by hollow glass beads

Improved damage sensing with random/aligned carbon nanofiber in bulk epoxy and adhesive joints

Contact Info

Product

Resources

About