Introduction of SWCNTs as a Method of Improvement of Electrical and Mechanical Properties of CFRPs Based on Thermoplastic Acrylic Resin

Demski, Szymon; Dydek, Kamil; Bartnicka, Kinga; Majchrowicz, Kamil; Kozera, Rafał; Boczkowska, Anna

doi:10.3390/polym15030506

Cited by 9 publications

(4 citation statements)

References 57 publications

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“…At elevated initial strains, the internal structure of the adhesive undergoes more significant deformation. This leads to greater alignment or stretching of the polymer chains and adhesive network, resulting in increased resistance to further deformation 25 . During relaxation, the internal structures may not completely revert to their original state, particularly at higher strain levels, likely due to physical entanglements and possible irreversible changes within the polymer network.…”

Section: Viscoelastic Behavior Of Psasmentioning

confidence: 99%

“…This behavior aligns with the time-temperature superposition principle typical of viscoelastic materials, where higher temperatures effectively accelerate relaxation processes 6 . Additionally, the temperature affects the relaxation mechanisms: at lower temperatures, PSAs exhibit a predominantly elastic response due to restricted molecular mobility, while at higher temperatures, a more pronounced viscoelastic response emerges due to increased molecular rearrangement 25 .…”

Section: Viscoelastic Behavior Of Psasmentioning

confidence: 99%

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Effect of temperature and humidity on mechanical properties and constitutive modeling of pressure-sensitive adhesives

Luo,

Chen,

Liu

et al. 2024

Sci Rep

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Pressure-sensitive adhesives (PSAs) are crucial for the structural and functional integrity of flexible displays. Investigating the intricate mechanical properties of PSAs can help enhance product quality and performance. This study conducts systematic mechanical tests, including uniaxial tensile, compression, planar shear, and stress relaxation, on PSAs at temperatures ranging from – 25 to 85 ℃ and relative humidity levels from 0 to 90%. Our findings reveal that the Anssari-Benam model accurately describes the hyperelastic behavior of PSA materials under large deformation, outperforming the Ogden model by requiring fewer parameters and better preserving convexity. Moreover the results show that temperature markedly affects PSA properties, particularly near the glass transition temperature (Tg), with lower temperatures leading to decreased elasticity and higher temperatures aiding in stress relaxation. Similarly, humidity impacts PSA behavior, increasing elasticity and decreasing stiffness, especially noticeable in stress relaxation tests. These findings highlight the substantial influence of environmental conditions on the material properties of PSAs and underscore the necessity of understanding both hyperelastic and viscoelastic responses for their application in flexible technologies. This research provides critical insights for the optimal utilization of PSAs in the rapidly evolving field of flexible electronics, including OLED displays.

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Section: Viscoelastic Behavior Of Psasmentioning

confidence: 99%

Section: Viscoelastic Behavior Of Psasmentioning

confidence: 99%

Effect of temperature and humidity on mechanical properties and constitutive modeling of pressure-sensitive adhesives

Luo,

Chen,

Liu

et al. 2024

Sci Rep

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“…The addition of nanofillers to polymer matrices has been found to improve thermal and electrical properties and even lead to higher mechanical strength and stiffness. For example, the electrical conductivity of carbon fibre-reinforced thermoplastic composites was investigated and it was shown that the addition of single-walled carbon nanotubes to the matrix led to an improvement in electrical conductivity [10]. Similarly, studies on the thermal properties of graphene oxide modified epoxy composites were conducted and they showed that the resulting composites exhibited improved thermal stability and improved interlaminar shear strength ILSS values [11].…”

Section: Introductionmentioning

confidence: 99%

Experimental Analysis of the Influence of Thermoplastic Veils Doped With Nanofillers on the Thermal Properties of Fibre-Reinforced Composites

Stanik,

Winkler,

Langkamp

et al. 2023

10th ECCOMAS Thematic Conference on Smart Structures and Materials

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Fibre-reinforced polymers (FRP) have significant advantages over metals due to their excellent specific mechanical properties. However, their range of application is often limited by insufficient thermal properties. In order to expand the range of applications of thermoplastic composites in particular, it is necessary to improve their thermal properties, especially thermal conductivity. The use of novel veils doped with nanofillers offers a high potential for tailormade modifications of composite properties depending on the filler used and the composite design. However, the integration of thermoplastic veils with nanofillers into composite structures is associated with some fundamental challenges: modification of the composite design and thus the change of material properties as well as change of the manufacturing process and the process parameters. To investigate these phenomena, polyphenylene sulphide (PPS) veils doped with multi-walled carbon nanotubes (MWCNTs) were integrated into carbon fibre-reinforced polymers (CFRP) with acrylic resin system. For this purpose, various lay-up setups of the fibre reinforcement and the modified veils were defined and the composite structures were fabricated using the wet compression moulding (WCM) process. The influence of the process parameters on the infiltration and consolidation of the composite structure with acrylic resin was investigated. The composite structures were evaluated using non-destructive testing methods such as ultrasonic as well as microscopic observations. In addition, extensive thermal and mechanical tests were carried out to determine the influence of the integrated veils on the composite properties and compared with reference structures. As a result, a basis for a model-based and integrated material development process was created.

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“…In literature, it has been proven that resin modified with CNTs can improve the electrical conductivity of epoxy-based or thermoplasticbased nanocomposites 28,29 . Moreover, in previous work, it has been proven that modification of Elium® resin with a low content of SWCNTs improves the electrical conductivity of CFRPs by 4.5-5.6 times 30 .…”

mentioning

confidence: 98%

Mechanical recycling of CFRPs based on thermoplastic acrylic resin with the addition of carbon nanotubes

Demski,

Misiak,

Majchrowicz

et al. 2024

Sci Rep

Self Cite

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Carbon fibre-reinforced polymers (CFRPs) are commonly used in aviation, automotive and renewable energy markets, which are constantly growing. Increasing the production of composite parts leads to increased waste production and a future increase in end-of-life components. To improve the recyclability of CFRPs, new materials that fit in with the idea of a circular economy should be used as a composite matrix. One such material is a commercially available thermoplastic liquid resin, Elium® (Arkema, France). In this work, the authors investigated how the mechanical recycling process affects the properties of thermoplastic-based carbon fibre composites. CFRPs with neat Elium® resin and resin modified with 0.02 wt.% single-walled carbon nanotubes or 0.02 wt.% multi-walled carbon nanotubes were manufactured using the resin infusion process. Afterwards, prepared laminates were mechanically ground, and a new set of composites was manufactured by thermopressing. The microstructure, mechanical, thermal and electrical properties were investigated for both sets of composites. The results showed that mechanical grinding and thermopressing processes lead to a significant increase in the electrical conductivity of composites. Additionally, a sharp decrease in all mechanical properties was observed.

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Introduction of SWCNTs as a Method of Improvement of Electrical and Mechanical Properties of CFRPs Based on Thermoplastic Acrylic Resin

Cited by 9 publications

References 57 publications

Effect of temperature and humidity on mechanical properties and constitutive modeling of pressure-sensitive adhesives

Effect of temperature and humidity on mechanical properties and constitutive modeling of pressure-sensitive adhesives

Experimental Analysis of the Influence of Thermoplastic Veils Doped With Nanofillers on the Thermal Properties of Fibre-Reinforced Composites

Mechanical recycling of CFRPs based on thermoplastic acrylic resin with the addition of carbon nanotubes

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