Effect of Core–Shell Rubber Nanoparticles on the Mechanical Properties of Epoxy and Epoxy-Based CFRP

Glaskova-Kuzmina, Tatjana; Stankevics, Leons; Tarasovs, S.; Sevcenko, Jevgenijs; Špaček, Vladimír; Šarakovskis, Anatolijs; Zolotarjovs, Aleksejs; Šmits, Krišjānis; Aniskevich, Andrey

doi:10.3390/ma15217502

Cited by 10 publications

(6 citation statements)

References 24 publications

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“…Studying the mode-I interlaminar fracture toughness of composites usually determines two values: the initiation and propagation fracture toughness. [16][17][18][19][20] The initial fracture toughness was 427.6 J/m 2 for CF/EP composite, while if GF/EP composite is used, the initial fracture increases to 693.6 J/m 2 . When replacing CF/EP composite by GF/EP, the propagation fracture toughness was increased from 530.9 to 735.1 J/m 2 .…”

Section: Mode-i Interlaminar Fracture Toughness Testmentioning

confidence: 99%

Effects of fabrics reinforced on mechanical properties of epoxy epikote 828

Trung,

Dieu,

Oanh

et al. 2023

Vietnam Journal of Chemistry

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The curing agent content plays an important role in the synthesis of polymer composites, as it determines the quality and durability of these materials. Cyanethyl‐diethylenetriamine (CEDETA) was used as the curing agent for epoxy epikote 828. The effect of CEDETA content on the gel content and fracture toughness (KIC) of epoxy resin, as well as the effect of reinforcing fabric on the mechanical properties of composite materials was studied. The results showed that a CEDETA curing agent content of 26 parts per hundred resin (phr) gave the highest values of 88.2% gel content and 2.95 MPa.m1/2 fracture toughness. The tensile and flexural strengths of carbon/epoxy fabric composites (CF/EP) were significantly higher than those of glass/epoxy fabric composites (GF/EP). However, the izod impact strength and the mode‐I interlaminar fracture toughness of CF/EP composites were lower than those of GF/EP composites. The damaged surfaces of the composites were observed using scanning electron microscopy (SEM).

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Section: Mode-i Interlaminar Fracture Toughness Testmentioning

confidence: 99%

Effects of fabrics reinforced on mechanical properties of epoxy epikote 828

Trung,

Dieu,

Oanh

et al. 2023

Vietnam Journal of Chemistry

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“…The tensile and flexural properties of the epoxy blends were evaluated and was found that just a low amount of GO (less than 0.6 wt.%) was sufficient to improve the performance. Aniskevich and team [28] incorporate three additives containing core-shell rubber (CSR) nanoparticles into the epoxy resin. The tensile properties, fracture toughness and glass transition temperature of the epoxy and epoxy-based CFRP were then investigated.…”

Section: Introductionmentioning

confidence: 99%

Reusing Bisphenol—A Type of Epoxy Polymer Recyclates from the Solvolysis of CFRP

Cho,

Wang,

Tsumura

et al. 2023

J. Compos. Sci.

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Carbon fiber-reinforced polymer (CFRP) composites are highly functional composites which comprise two major components: the polymer matrix and the carbon fiber. Lightweight and having high strength, CFRPs have been used heavily in various industries such as wind, aerospace and automobile. The increasing demand and extensive use led to a huge quantum of CFRP waste from both end-of-life and during manufacturing. Out of this waste, only 2% is recycled, the rest are disposed of via incineration and/or landfill. This has raised significant environmental and sustainability concerns. The current state-of-the-art way of recycling CFRPs is by pyrolysis. However, through the pyrolysis process, the polymer used in the CFRPs, which accounts for around 65–75 wt.%, cannot be recovered and reused. In most publications, the focus on CFRP recycling was on the recovering of the more valuable carbon fiber. The polymer matrix is mostly burnt off, in the case of pyrolysis, or disposed. To obtain full circularity, recovering and reusing both the carbon fiber and polymer is necessary. In this paper, we primarily focus on the recovered bisphenol-A type of epoxy polymer (REP) obtained from solvolysis digestion of CFRP and explore the feasibility of reusing this REP by blending it with pristine epoxy in various compositions to create new materials. The physical and mechanical properties, including decomposition temperatures (Td), glass transition temperatures (Tg), storage modulus, loss modulus, flexural and tensile strength, were characterized using thermal gravity analyzer (TGA), differential scanning calorimetry (DSC), dynamic mechanical analyzer (DMA) and Instron universal tester. The results indicate a decrease in glass transition and decomposition temperature, and mechanical properties as the blending composition increases. This suggests that the total blending composition should not exceed 10 wt.%, with an optimal range potentially falling between 5 to 6 wt.%.

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“…Glaskova-Kuzmina et al [ 12 ] reported on the effect of core–shell rubber nanoparticles on the tensile properties, fracture toughness, and glass transition temperature of the epoxy and epoxy-based carbon fiber reinforced polymer. The Hansen model was applied to describe the elastic modulus of the epoxy possessing a certain fraction of the core–shell rubber nanoparticles and pores.…”

mentioning

confidence: 99%

“…The effect of the core–shell rubber nanoparticles on the tensile properties of the epoxy resin was notable, leading to a reduction of 10–20% in the tensile strength and elastic modulus and an increase of 60–108% in the fracture toughness for the highest filler fraction. No considerable distinction in the fracture toughness among the additives was detected, thereby proving that the small (100 nm) and large (300 nm) core–shell rubber nanoparticles were equally efficient [ 12 ]. The glass transition temperature of the epoxy was gradually improved by 10–20 °C with the increase of core–shell rubber nanoparticles for all of the additives, which could be attributed to the high crosslink density and toughening effect of rubber modifiers, thereby testifying to their dissolution in the continuous epoxy phase.…”

mentioning

confidence: 99%

“…The glass transition temperature of the epoxy was gradually improved by 10–20 °C with the increase of core–shell rubber nanoparticles for all of the additives, which could be attributed to the high crosslink density and toughening effect of rubber modifiers, thereby testifying to their dissolution in the continuous epoxy phase. The possible combination of rigid and soft particles could be a compromise to simultaneously improve both the tensile properties and the fracture toughness, which cannot be achieved by the single-phase particles independently [ 12 ].…”

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confidence: 99%

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Synthesis, Physicochemical Characterization and Applications of Advanced Nanomaterials

Dippong

2023

Materials

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This Special Issue highlights the last decade’s progress regarding new nanostructured materials. In this regard, the development of nanoscale syntheses and innovative characterization tools that resulted in the tailored design of nanostructured materials with versatile abilities in many applications were investigated. Various types of engineered nanostructures, usually metal nanoparticles or nanoporous metal oxides, have been synthesized for various applications. This Special Issue covers the state-of-the-art of advanced nanoparticles in many disciplines (chemistry, pharmacy, nanomedicine, agriculture, catalysis, and environmental science). The crystallite sizes depended on the annealing temperature and type of doping ion. A combination of rigid and soft particles could simultaneously enhance both the tensile properties and the fracture toughness, which could not be achieved by the single-phase particles independently. The surface charge and in vitro corrosion resistance are key parameters characterizing biomaterials in the interaction of the implant with the biological environment. Solar energy in the presence of a photocatalyst can be effectively converted into electricity/fuel, break down chemical and microbial pollutants, and help water purification. The saturation magnetization, remanent magnetizations, coercivity, and anisotropy were found to depend on the doping ion, annealing temperature, and particle size. The efficiency of the photocatalysis reaction depends on several factors, including light absorption capacity/light intensity, the type of photocatalyst used, the concentration of a photocatalyst and contaminant particles, the pH of the reaction medium, etc. The variety of color pigments and coloring properties of the targeted application in the ceramic industry was also of interest.

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Effect of Core–Shell Rubber Nanoparticles on the Mechanical Properties of Epoxy and Epoxy-Based CFRP

Cited by 10 publications

References 24 publications

Effects of fabrics reinforced on mechanical properties of epoxy epikote 828

Effects of fabrics reinforced on mechanical properties of epoxy epikote 828

Reusing Bisphenol—A Type of Epoxy Polymer Recyclates from the Solvolysis of CFRP

Synthesis, Physicochemical Characterization and Applications of Advanced Nanomaterials

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