The dispersion of SWCNTs treated by dispersing agents in glass fiber reinforced polymer composites

Zhao, Yan; Duan, Yuping; Lu, Yonghao; Guan, Fang

doi:10.1016/j.compscitech.2009.01.012

Cited by 18 publications

(10 citation statements)

References 8 publications

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“…The addition of GNP and/or a BC did not change the glass transition temperature ( T g ) compared to the neat epoxy in this work. Such results are in agreement with other similar works in the literature for epoxy nanocomposites with volume fraction of nanoparticles up to 0.5 vol% and even when a BC is used .…”

Section: Resultssupporting

confidence: 93%

Toughness and roughness in hybrid nanocomposites of an epoxy matrix

Coelho

2019

Polymer Engineering & Sci

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The present paper investigates the relationship between roughness and toughening mechanisms in hybrid epoxy nanocomposites with carbon nanotubes (CNT) and graphene nanoplatelets (GNPs). The role of adding a block copolymer (BC) to the studied systems was also investigated. The nanocomposites were prepared by means of high-energy sonication and in situ polymerization. All nanocomposites presented higher numerical values for K Ic than untoughened systems. The system containing 0.5 wt% of CNTs presented an increase of 35% in K Ic compared to neat epoxy, and the hybrid nanocomposite, at the proportion of 1:1 (CNT:GNP), with 0.5 wt% total of nanoparticles and also containing 0.5 wt % of BC, had an increase of 34% compared to the neat epoxy. Systems with higher amounts of graphene showed the highest roughness values, having crack deflection/exfoliation between the GNP layers as the main toughening mechanism. On the other hand, systems with more CNTs presented a lower fracture surface roughness, and the main toughening mechanism was bridging/break-up of the nanotubes. Hybrid systems have more types of mechanisms than simple ones. With only one type of nanoparticle, however, some of those mechanisms are not effective in increasing the toughness, only increasing the fracture surface roughness. POLYM. ENG.

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Section: Resultssupporting

confidence: 93%

Toughness and roughness in hybrid nanocomposites of an epoxy matrix

Coelho

2019

Polymer Engineering & Sci

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“…Yan et al modified SWNTs with surfactants Volan and BYK-9076 to improve the dispersion state in the polymer matrix [125]. They incorporated the treated SWNTs as secondary reinforcement in glass fiber reinforced epoxy and reported an increase in flexural strength of up to 16%, which can be attributed to the improved dispersion state, absence of agglomerates, and strong interfacial interactions.…”

Section: Reviewmentioning

confidence: 99%

“…They incorporated the treated SWNTs as secondary reinforcement in glass fiber reinforced epoxy and reported an increase in flexural strength of up to 16%, which can be attributed to the improved dispersion state, absence of agglomerates, and strong interfacial interactions. The glass transition temperature did not change [125]. The synthesis of endohedral CNTs (Fig.…”

Section: Reviewmentioning

confidence: 99%

Reasons and remedies for the agglomeration of multilayered graphene and carbon nanotubes in polymers

Atif

Inam

2016

Beilstein J. Nanotechnol.

235

123

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SummaryOne of the main issues in the production of polymer nanocomposites is the dispersion state of filler as multilayered graphene (MLG) and carbon nanotubes (CNTs) tend to agglomerate due to van der Waals forces. The agglomeration can be avoided by using organic solvents, selecting suitable dispersion and production methods, and functionalizing the fillers. Another proposed method is the use of hybrid fillers as synergistic effects can cause an improvement in the dispersion state of the fillers. In this review article, various aspects of each process that can help avoid filler agglomeration and improve dispersion state are discussed in detail. This review article would be helpful for both current and prospective researchers in the field of MLG- and CNT-based polymer nanocomposites to achieve maximum enhancement in mechanical, thermal, and electrical properties of produced polymer nanocomposites.

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“…When 0.3 wt% reactive CNTs were added in the matrix, the flexural strength, modulus and breaking strain of the epoxy systems increased by 32, 9, and 70%, respectively [70]. Yan [71] tested five specimens of glass fiber reinforced epoxy composites, and found that glass fiber/epoxy composites with or without SWNTs had no obvious change on the flexural properties of composites. However, the SWNTs/glass fiber/epoxy composites containing SWNTs treated by Volan or by both Volan and BYK‐9076, the flexural strength of composite improved dramatically by 2.64 or 16.11%.…”

Section: Mechanical Performance Of Multi‐scale Hybrid Compositesmentioning

confidence: 99%

Multi‐scale hybrid composites‐based carbon nanotubes

Wang

Chen

et al. 2010

Polymer Composites

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Since the carbon nanotubes (CNTs) have been discovered, there has been a marked increase in the scientific literature dealing with multi-scale composites. The multi-scale hybrid composites with CNTs could endow the composites with some superior mechanical properties, such as improving the tensile performance, modest increasing compressive and flexural properties, and significantly enhancing interlaminar, interfacial and fracture strength. In addition, composites with CNTs can also develop the functional properties. A small quantity of CNTs can significantly increase the electrical properties of composites and lower the coefficient of thermal expansion of composites. The purpose of this work is to review the available literature in mechanical and functional properties of multi-scale hybrid composites manufactured using CNTs. POLYM. COMPOS., 32:159-167, 2011. ª

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The dispersion of SWCNTs treated by dispersing agents in glass fiber reinforced polymer composites

Cited by 18 publications

References 8 publications

Toughness and roughness in hybrid nanocomposites of an epoxy matrix

Toughness and roughness in hybrid nanocomposites of an epoxy matrix

Reasons and remedies for the agglomeration of multilayered graphene and carbon nanotubes in polymers

Multi‐scale hybrid composites‐based carbon nanotubes

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