Simultaneous improvement of the fracture toughness and mechanical characteristics of amine-functionalized nano/micro glass fibril-reinforced epoxy resin

Vu, Cuong Manh; Sinh, Le Hoang; Nguyen, Dinh Duc; Thi, Huong Vu; Choi, Hyoung Jin

doi:10.1016/j.polymertesting.2018.09.005

Cited by 34 publications

(13 citation statements)

References 39 publications

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“…Currently, the composites based on epoxy resin are regarded as most important material used in aviation, for structural elements [1][2][3][4][5][6][7][8][9], including aircraft skin [10,11]. In order to meet increasing expectations, more and more research is being conducted to modify the properties of the resin by adding fillers [12][13][14][15][16], including the increasingly popular nanofillers [17][18][19][20][21][22][23][24][25]. An important challenge for all technical applications of epoxy resin based com-posites, particularly aviation constructions, is the need to manufacture materials with significantly reduced flammability [26][27][28][29].…”

Section: Wpływ Wygrzewania Na Sieciowanie żYwicy Epoksydowej Przeznacmentioning

confidence: 99%

The effect of the heat treatment on the crosslinking of epoxy resin for aviation applications

Mucha¹,

Sterzyński

Krzyżak³

2020

Polimery

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We have investigated the MGS L285 epoxy laminating resin system, used in aviation applications. A number of tests were carried out, namely Dynamic Mechanical Analysis (DMA), Differential Scanning Calorimetry (DSC), tensile testing, three-point bending flexural testing, Charpy impact testing, Shore D hardness, density measurements and Fourier-Transform Infrared spectroscopy (FT-IR). Moreover, the tensile toughness U TT , the brittleness B and the linear isobaric thermal expansivity α L were calculated. The samples were subjected to heat treatment in the temperatures of 50, 60 and 80°C for 15 hours or were stored in room temperature. Glass transition temperature, hardness, density as well as other properties were observed to rise along with the increasing heat treatment temperature, suggesting the validity of applications of Voronoi-Delaunay structural analysis to polymer science. On the other hand, properties such as brittleness, toughness and impact strength exhibited a non-linear course of changes as a function of the heating temperature.

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Section: Wpływ Wygrzewania Na Sieciowanie żYwicy Epoksydowej Przeznacmentioning

confidence: 99%

The effect of the heat treatment on the crosslinking of epoxy resin for aviation applications

Mucha¹,

Sterzyński

Krzyżak³

2020

Polimery

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“…Several additives have been used to increase toughness, such as elastomers [1,2], solid nanoparticles [3][4][5] and thermoplastic polymers [6,7]. Nevertheless, many additives are insoluble solids that are difficult to disperse and increase resin viscosity, with a detrimental effect on composite manufacturing processes like those of the liquid molding type.…”

Section: Introductionmentioning

confidence: 99%

Imidazolium ionic liquids as fracture toughening agents in DGEBA-TETA epoxy resin

et al. 2020

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Although epoxy resins are used in a broad variety of applications due to their good mechanical and thermal properties, their low fracture toughness is a limitation, exhibiting brittle behavior. This study explored the potential use of imidazolium ionic liquids (IL) as toughening agents for epoxy resin based on diglycidyl ether of bisphenol A (DGEBA) with triethylenetetramine (TETA) as curing agent. Fracture toughness was evaluated for DGEBA-TETA epoxy resins with eleven imidazolium IL and the best results were found for the IL with the chloride anion and the shortest N-alkyl side chain, C 4 MImCl. The use of 1.0 phr of C 4 MImCl lead to the reduction of the crosslink density of the post-cured resin, resulting in the increase of 25.5% in stress intensity factor and 8.2% in tensile strength with no significant loss in other mechanical properties.

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“…The improvement of the fracture toughness of EPs has attracted the attention of many researchers. [13][14][15][16][17][18][19][20] In addition, the high flammability of EP is the main drawback limiting its application in high-performance areas. 21,22 For this reason, improvement of the flame retardancy of EP is needed.…”

Section: Introductionmentioning

confidence: 99%

Phosphorous-jointed epoxidized soybean oil and rice husk-based silica as the novel additives for improvement mechanical and flame retardant of epoxy resin

Nguyen

Bach

2020

Journal of Fire Sciences

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The combined effects of phosphorous-jointed epoxidized soybean oil and rice husk–based silica on the flammability and mechanical properties of epoxy resin were examined in detail. The chemical structures of the epoxidized soybean oil, phosphorous-jointed epoxidized soybean oil, and rice husk–based silica were confirmed using Fourier transform infrared spectroscopy and proton nuclear magnetic resonance. Many characteristics of the obtained composite materials were examined, such as the tensile properties, impact strength, flexural strength, critical stress intensity factor (KIC), dynamic mechanical analysis, and flammability. The incorporation of both 10 phr phosphorous-jointed epoxidized soybean oil and 20 phr rice husk–based silica into the epoxy resin yielded the optimum values of the flexural strength, tensile strength, impact strength, and KIC, with increases of 87.78%, 67.23%, 109.34%, and 111.32%, respectively, compared with pristine samples. The limiting oxygen index increased from 23.1% to 29.3%, the peak heat-release rate decreased by up to 37.2%, and the sample satisfied the UL94 V-0 rating.

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Simultaneous improvement of the fracture toughness and mechanical characteristics of amine-functionalized nano/micro glass fibril-reinforced epoxy resin

Cited by 34 publications

References 39 publications

The effect of the heat treatment on the crosslinking of epoxy resin for aviation applications

The effect of the heat treatment on the crosslinking of epoxy resin for aviation applications

Imidazolium ionic liquids as fracture toughening agents in DGEBA-TETA epoxy resin

Phosphorous-jointed epoxidized soybean oil and rice husk-based silica as the novel additives for improvement mechanical and flame retardant of epoxy resin

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