Effect Of TETA Microcapsules On Self-healing Ability Of Dual Component Epoxy System

Choudhury, Ikbal; Halder, Sudipta; Khan, Nazrul Islam; Mathur, Abhinav; Nath, Writuparna; Phukan, Aniruddha

doi:10.5185/amlett.2016.6213

Cited by 5 publications

(4 citation statements)

References 1 publication

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“…Figure 2a shows that the SNR value increases as the temperature increases from 25 to 40°C followed by a decrease as we further increase the temperature from 40 to 85°C. In general, in solvent evaporation method the quick evaporation of solvent significantly affects the surface morphology of the microcapsules [20]. Hence, an increase in the reaction temperature leads in the formation of deep pores on the surface of microcapsules.…”

Section: Results and Discussion 31 Snr Analysismentioning

confidence: 99%

“…Therefore, there is a need to develop new shell wall material for the preparation of such microcapsules. The use of poly(methyl methacrylate) (PMMA) polymer as a potential shell wall material in microencapsulation process of such microcapsules has been reported in the literature [17][18][19][20][21]. Li et al [17] first introduced the preparation of curing agent and epoxy loaded PMMA microcapsules by solvent evaporation technique for the development of polymeric self-healing composites.…”

Section: Introductionmentioning

confidence: 99%

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Parametric study for epoxy loaded PMMA microcapsules using Taguchi and ANOVA methods

Sharma¹,

Choudhary²

2017

Express Polym. Lett.

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Abstract. In this study, we systematically investigated the effect of various process parameters, such as surfactant concentration, core-to-shell ratio taken in the initial feed, temperature and agitation speed on the core content of microcapsules. For this study epoxy loaded poly(methyl methacrylate) microcapsules were prepared by solvent evaporation method. Taguchi orthogonal array with L 25 matrix was implemented to optimize the experimental parameters for such microcapsules. The signal-to-noise ratio (SNR) and analysis of variance (ANOVA) were also performed to determine the optimum parameters and significance of various parameters. Morphological characterization (optical microscopy, scanning electron microscopy and transmission electron microscopy) and particle size analysis (mean particle size and particle size distribution) was done to investigate the effect of various parameters on the prepared microcapsules. SNR analysis identified the optimum levels of various parameters as: surfactant concentration-10 wt%, core-to-shell ratio-3:1, temperature-40°C and agitation speed-300 rpm. ANOVA analysis showed that surfactant concentration was the most significant parameter in improving the core content of such microcapsules. The findings of Taguchi method were also verified with contour plots. Maximum core content obtained under optimum conditions was 63.53 wt% and such microcapsules can find applications for the development of self-healing polymer composites.

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Section: Results and Discussion 31 Snr Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Parametric study for epoxy loaded PMMA microcapsules using Taguchi and ANOVA methods

Sharma¹,

Choudhary²

2017

Express Polym. Lett.

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“…Using modern mixing technology, microcapsules loaded with repair agents were easily able to bond to the polymer matrix 5–8 . If there was mechanical damage in the microcapsule, both the repair agent and the hardener would flow out of the broken microcapsule to fill the damaged area and extend the service life of the material 9–11 …”

Section: Introductionmentioning

confidence: 99%

“…[5][6][7][8] If there was mechanical damage in the microcapsule, both the repair agent and the hardener would flow out of the broken microcapsule to fill the damaged area and extend the service life of the material. [9][10][11] Epoxy resin was widely used in various fields because of its excellent physical and mechanical properties, electrical insulation properties and bonding properties with various materials. 12,13 Epoxy resin based epoxyamine repair system had become one of the commonly used repair systems because of its good substrate compatibility and fast repair speed.…”

Section: Introductionmentioning

confidence: 99%

Preparation of two‐component micro‐encapsulated epoxy self‐healing materials based on Pickering emulsion method

Wang

Feng

et al. 2023

J of Applied Polymer Sci

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The use of microencapsulated self‐healing materials has been widely applied in many fields, while factors (e.g., the size and content of the microcapsules) markedly affect the mechanical properties of the self‐healing material. In this study, an epoxy‐amine microencapsulated self‐healing material was developed through Pickering emulsion to reduce the effects of the above‐mentioned factors. In this study, the Pickering emulsion was stabilized using two two‐dimensional (2D) materials (i.e., GO and BN), and epoxy microcapsules and amine microcapsules were prepared, with average size of 3.62 and 4.63 μm, respectively. FTIR spectroscopy was used to identify the presence of characteristic PU peaks in the microcapsules, and the bilayer shell microcapsules were well‐prepared. To prepare the binary epoxy resin self‐healing material, two microcapsules were added to the epoxy resin matrix and its mechanical properties were analyzed. Based on the test results, it was suggested that the addition of microcapsules in this study slightly affected the mechanical properties of the material, and the binary self‐healing material still exhibited 89% of the bending stress below the 10 wt% content of the microcapsules. In addition, the tensile stress after repair was 148% of that before. These materials have promising applications in many areas (e.g., engineering technology).

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Self‐healing performance assessment of epoxy resin and amine hardener encapsulated polymethyl methacrylate microcapsules reinforced epoxy composite

Pittala

Ben

2021

J of Applied Polymer Sci

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In order to study the effect of healing materials viscosity on the self‐healing performance of polymer composite, mostly available epoxy resin of viscosity 10–12 Pa.s and amine hardener of viscosity 0.01–0.02 Pa.s were chosen as two different healing materials and successfully encapsulated. Effect of core to shell(c/s) ratio on the synthesis of epoxy microcapsules was investigated and 1:1 c/s ratio is suggested as an ideal ratio to synthesize epoxy capsules. Chemical structure and thermal decomposition patterns of both microcapsules and capsules reinforced composite were analyzed. Tensile strength, impact strength and fracture toughness of capsules reinforced self‐healing epoxy composite were evaluated. It was observed that the toughness of epoxy composite increased with the increase in microcapsules concentration. An optimum healing efficiency of 66% was observed with the addition of 7.5 wt% epoxy and hardener microcapsules at equal weight ratio. Stresses developed in the pure epoxy composite crack front were analyzed using Ansys V18.1.

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Effect Of TETA Microcapsules On Self-healing Ability Of Dual Component Epoxy System

Cited by 5 publications

References 1 publication

Parametric study for epoxy loaded PMMA microcapsules using Taguchi and ANOVA methods

Parametric study for epoxy loaded PMMA microcapsules using Taguchi and ANOVA methods

Preparation of two‐component micro‐encapsulated epoxy self‐healing materials based on Pickering emulsion method

Self‐healing performance assessment of epoxy resin and amine hardener encapsulated polymethyl methacrylate microcapsules reinforced epoxy composite

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