Effects of ozonized carbon black on fracture and post-cracking toughness of carbon fiber-reinforced epoxy composites

Kim, Seong Hwang; Park, Soo‐Jin; Rhee, Kyong Yop; Park, Soo‐Jin

doi:10.1016/j.compositesb.2019.107379

Cited by 38 publications

(13 citation statements)

References 65 publications

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“…Minireviews polymers-either to be more durable or to be degraded more easily-as demonstrated by Tsuji et al [84] They designed acurable resin that is degradable by ozonolysis.Inaddition to polymers,carbon black [85] and other carbon allotropes can be subjected to post-synthetic modification. [86,87] Theo zonolysis of polymers has been exploited for structure elucidation.…”

Section: Angewandte Chemiementioning

confidence: 99%

Criegee Intermediates Beyond Ozonolysis: Synthetic and Mechanistic Insights

et al. 2021

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carried out most of his research at the Karlsruhe Institute of Technology (then, Technische Hochschule Karlsruhe), even after his retirementin1969 until his death on November 7, 1975. The renewed tremendous interest in ozone-organic chemistry is credited to R. Criegee, because of his pioneeringprecise investigations into the mechanism of the ozonolysis reaction. [6] Among Criegee's prolific scientific works, one of his great scientific achievements was the elucidation of the reaction mechanism of the ozonolysis of double bonds, [7] which has contributed enormouslyi ndifferent aspects to the progress of ozonation in organic chemistry. [8,9]

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Section: Angewandte Chemiementioning

confidence: 99%

Criegee Intermediates Beyond Ozonolysis: Synthetic and Mechanistic Insights

et al. 2021

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“…To overcome the mechanical property problems mentioned above, there are many studies that improve the interfacial adhesion by adding nano-scale fillers between the CFs and the epoxy matrix [ 16 , 17 , 18 ]. Recently, many experts have confirmed that the addition of carbon nanotubes (CNTs) [ 19 ], carbon black [ 20 ], graphene [ 21 ], and nano-silica [ 22 ] to the epoxy matrix improves the mechanical properties. Nano-scale CNTs have proven to be an excellent material for activating both the CFs and the surface of the matrix [ 23 , 24 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Atmospheric-Pressure Plasma Treatments on Fracture Toughness of Carbon Fibers-Reinforced Composites

et al. 2021

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In this study, nano-scale fillers are added to epoxy matrix-based carbon fibers-reinforced composites (CFRPs) to improve the mechanical properties of multi-scale composites. Single-walled carbon nanotubes (SWCNTs) used as nano-scale fillers are treated with atmospheric-pressure plasma to introduce oxygen functional groups on the fillers’ surface to increase the surface free energy and polar component, which relates to the mechanical properties of multi-scale composites. In addition, the effect of dispersibility was analyzed through the fracture surfaces of multi-scale composites containing atmospheric-pressure plasma-treated SWCNTs (P-SWCNTs) under high load conditions. The fillers content has an optimum weight percent load at 0.5 wt.% and the fracture toughness (KIC) method is used to demonstrate an improvement in mechanical properties. Here, KIC was calculated by three equations based on different models and we analyzed the correlation between mechanical properties and surface treatment. Compared to the composites of untreated SWCNTs, the KIC value is improved by 23.7%, suggesting improved mechanical properties by introducing selective functional groups through surface control technology to improve interfacial interactions within multi-scale composites.

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“…[10][11][12] To reinforce the interface of CFRP, CF surface need to be modified. In recent decade, many methods to improve the interfacial adhesion of fibrous composites have been proposed, such as chemical grafting, [4,12,13] sizing, [7,14,15] growing carbon black, [10,16,17] electrophoretic deposition, [18][19][20] and introducing nanoparticles. [21][22][23][24][25] But some of them are carried out at extremely toxic, high-energy consuming and harsh conditions, which have a limited development in industrial applications.…”

Section: Introductionmentioning

confidence: 99%

Catechol‐based co‐deposited carbon fiber surfaces for enhancement of fiber/epoxy composites

et al. 2020

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To improve interfacial adhesion between carbon fiber (CF) and epoxy resin, a low‐cost and environment‐friendly method was developed to treat the CF surface via the bio‐inspired co‐deposition of catechol (Cc) and polyethyleneimine (PEI). It is noteworthy that the deposition process reacts at room temperature with water as solvent, and does not require harsh conditions or the use of toxic reagents. After treatment, the CF/epoxy composites were endowed with excellent mechanical properties and showed increases of 51.9% and 51.7% for flexural strength and ILSS, respectively, in comparison with unsized CF laminates. The analyses of fractured surface morphologies and strengthening mechanism of the composites indicated that the uniformly coated Cc‐PEI on the fiber surface can promote the diffusion and entanglement of the matrix molecular chains and form chemical bonding as well as π‐π stacking, thus effectively improving the interfacial adhesion. In addition, the facile process disclosed in this study can provide a new strategy to not only for CF treating but also expected to be used in the modification of other high performance fiber reinforcement and industrial applications.

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Effects of ozonized carbon black on fracture and post-cracking toughness of carbon fiber-reinforced epoxy composites

Cited by 38 publications

References 65 publications

Criegee Intermediates Beyond Ozonolysis: Synthetic and Mechanistic Insights

Criegee Intermediates Beyond Ozonolysis: Synthetic and Mechanistic Insights

Effect of Atmospheric-Pressure Plasma Treatments on Fracture Toughness of Carbon Fibers-Reinforced Composites

Catechol‐based co‐deposited carbon fiber surfaces for enhancement of fiber/epoxy composites

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