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Journal articles on the topic 'MICROENCAPSULATED HEALING AGENTS'

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1

Lee, Jim, Debes Bhattacharyya, Ming Qiu Zhang, Yiu Wing Mai, and Yan Chao Yuan. "Compression Behavior of a Self-Healing Fibre Reinforced Epoxy Composite." Applied Mechanics and Materials 55-57 (May 2011): 1281–86. http://dx.doi.org/10.4028/www.scientific.net/amm.55-57.1281.

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The concept of introducing self-healing capabilities in polymer materials and systems has been based on mimicking biological self-healing materials and systems, for example, materials like proteins have phenomenal capabilities in self-healing damaged biological structures. This work has been extended to investigate self-healing capabilities of fibre reinforced epoxy composites. Microencapsulated epoxy and mercaptan healing agents were incorporated into a glass fibre reinforced epoxy matrix to produce a polymer composite capable of self-healing. The specimens containing the microencapsulated ep
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2

Schreiner, Claus, Sabine Scharf, Volkmar Stenzel, and Albert Rössler. "Self-healing through microencapsulated agents for protective coatings." Journal of Coatings Technology and Research 14, no. 4 (2017): 809–16. http://dx.doi.org/10.1007/s11998-017-9921-x.

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3

Litina, Chrysoula, and Abir Al-Tabbaa. "Development of sustainable concrete repair materials via microencapsulated agents." MATEC Web of Conferences 289 (2019): 11002. http://dx.doi.org/10.1051/matecconf/201928911002.

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Identification of non-structural damage in concrete infrastructure and actuation of preventive repair solutions is an established approach to avoid further structural damages and more expensive repair regimes. However the repair of concrete itself is not infallible with 55% of reported repairs in the EU failing within 5 years of service. Thus the already once repaired concrete structure is then subject to a constant cycle of repeated repair and a cumulative associated life cycle cost. The development of external repair material with self-healing capabilities, can affect a real step-change on t
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4

Ghazali, Habibah, Lin Ye, and Amie N. Amir. "Microencapsulated healing agents for an elevated-temperature cured epoxy: Influence of viscosity on healing efficiency." Polymers and Polymer Composites 29, no. 9_suppl (2021): S1317—S1327. http://dx.doi.org/10.1177/09673911211045373.

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Among many applications, elevated-temperature cured epoxy resins are widely used for high-performance applications especially for structural adhesive and as a matrix for structural composites. This is due to their superior chemical and mechanical properties. The thermosetting nature of epoxy produces a highly cross-linked polymer network during the curing process where the resulting material exhibited excellent properties. However, due to this cross-linked molecular structure, epoxies are also known to be brittle, and once a crack initiated in the material, it is difficult to arrest the crack
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5

Zhu, Dong Yu, Min Zhi Rong, and Ming Qiu Zhang. "Self-healing polymeric materials based on microencapsulated healing agents: From design to preparation." Progress in Polymer Science 49-50 (October 2015): 175–220. http://dx.doi.org/10.1016/j.progpolymsci.2015.07.002.

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6

Kim, Sang Yup, Amanda R. Jones, Nancy R. Sottos, and Scott R. White. "Manufacturing of unidirectional glass/epoxy prepreg with microencapsulated liquid healing agents." Composites Science and Technology 153 (December 2017): 190–97. http://dx.doi.org/10.1016/j.compscitech.2017.10.017.

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7

Nassho, Yasuka, and Kazuaki Sanada. "Microstructure optimizations for improving interlaminar shear strength and self-healing efficiency of spread carbon fiber/epoxy laminates containing microcapsules." Journal of Composite Materials 55, no. 1 (2020): 27–38. http://dx.doi.org/10.1177/0021998320943941.

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The purpose of this study is to improve interlaminar shear strength and self-healing efficiency of spread carbon fiber (SCF)/epoxy (EP) laminates containing microcapsules. Microencapsulated healing agents were embedded within the laminates to impart a self-healing functionality. Self-healing was demonstrated on short beam shear specimens, and the healing efficiency was evaluated by strain energies of virgin and healed specimens. The effects of microcapsule concentration and diameter on apparent interlaminar shear strength and healing efficiency were discussed. Moreover, damaged areas after sho
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8

Norambuena-Contreras, Jose, Luis E. Arteaga-Perez, Andrea Y. Guadarrama-Lezama, Rodrigo Briones, Juan F. Vivanco, and Irene Gonzalez-Torre. "Microencapsulated Bio-Based Rejuvenators for the Self-Healing of Bituminous Materials." Materials 13, no. 6 (2020): 1446. http://dx.doi.org/10.3390/ma13061446.

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Asphalt self-healing by encapsulated rejuvenating agents is considered a revolutionary technology for the autonomic crack-healing of aged asphalt pavements. This paper aims to explore the use of Bio-Oil (BO) obtained from liquefied agricultural biomass waste as a bio-based encapsulated rejuvenating agent for self-healing of bituminous materials. Novel BO capsules were synthesized using two simple dripping methods through dropping funnel and syringe pump devices, where the BO agent was microencapsulated by external ionic gelation in a biopolymer matrix of sodium alginate. Size, surface aspect,
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9

Roig-Flores, M., S. Formagini, and P. Serna. "Self-healing concrete-What Is it Good For?" Materiales de Construcción 71, no. 341 (2021): e237. http://dx.doi.org/10.3989/mc.2021.07320.

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Self-healing of concrete is the process in which the material regenerates itself repairing inner cracks. This process can be produced by autogenous or autonomous healing. Autogenous healing is a natural process, produced by carbonation and/or continuing hydration. Autonomous healing is based on the use of specific agents to produce self-healing, which can be added directly to the concrete matrix, embedded in capsules or introduced through vascular networks. Some examples are superabsorbent polymers, crystalline admixtures, microencapsulated sodium silicate, and bacteria. This review is structu
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10

Zhou, Shuai, Yue Jia, and Chong Wang. "Global Sensitivity Analysis for the Polymeric Microcapsules in Self-Healing Cementitious Composites." Polymers 12, no. 12 (2020): 2990. http://dx.doi.org/10.3390/polym12122990.

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Cementitious composites with microencapsulated healing agents are appealing due to the advantages of self-healing. The polymeric shell and polymeric healing agents in microcapsules have been proven effective in self-healing, while these microcapsules decrease the effective elastic properties of cementitious composites before self-healing happens. The reduction of effective elastic properties can be evaluated by micromechanics. The substantial complicacy included in micromechanical models leads to the need of specifying a large number of parameters and inputs. Meanwhile, there are nonlinearitie
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11

Kim, Sang Yup, Tae-Wook Lim, Nancy R. Sottos, and Scott R. White. "Manufacture of carbon-fiber prepreg with thermoplastic/epoxy resin blends and microencapsulated solvent healing agents." Composites Part A: Applied Science and Manufacturing 121 (June 2019): 365–75. http://dx.doi.org/10.1016/j.compositesa.2019.03.033.

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12

Truong, Thuy Thu, and Le-Thu T. Nguyen. "MICROENCAPSULATION OF MERCAPTAN USING POLYCAPROLACTONE AS SHELL MATERIAL TOWARD SELF-HEALING COATING APPLICATIONS." Vietnam Journal of Science and Technology 56, no. 3B (2018): 137. http://dx.doi.org/10.15625/2525-2518/56/3b/12739.

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Polymer materials incorporating microencapsulated self-healing agents have a wide range of application from paint coating, anti-corrosion coatings to automotive and construction materials. In this research, microcapsules containing reactive mercaptan compound for use in self healing polymers were successfully fabricated via the oil-in-water emulsion method. We employed for the first time the UV-initiated thiol-ene reaction between an alkene-functionalized polycaprolactone and a tetrathiol compound to form the microcapsule shell. To synthesize microcapsules, the tetrathiol was used in large exc
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13

SHANAGHI, ALI, PAUL K. CHU, and HADI MORADI. "EFFECT OF INHIBITOR AGENTS ADDITION ON CORROSION RESISTANCE PERFORMANCE OF TITANIA SOL–GEL COATINGS APPLIED ON 304 STAINLESS STEEL." Surface Review and Letters 24, no. 04 (2016): 1750055. http://dx.doi.org/10.1142/s0218625x1750055x.

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Hybrid organic–inorganic coatings are deposited on 304 stainless steel substrates by the sol–gel technique to improve the corrosion resistance. A titania-based nanostructured hybrid sol–gel coating is impregnated with three different microencapsulated healing agents (inhibitors) including cerium, Benzotriazole (BTA), and 8-Hydroxyquinoline (8H). Field-emission scanning electron microscopy (FE-SEM) and electrochemical impedance spectroscopy (EIS) are performed to investigate the barrier performance properties. The optimum conditions to achieve corrosion protective coatings for 304 stainless ste
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14

Han, Kaihang, J. Woody Ju, Le-Yang Lv, Zhiguo Yan, Xiangsheng Chen, and Yin-fu Jin. "Damage-healing analysis of microencapsulated self-healing concrete subjected to tensile loading using a 2D micromechanical model." International Journal of Damage Mechanics, January 28, 2023, 105678952311517. http://dx.doi.org/10.1177/10567895231151726.

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Self-healing concrete that employs microencapsulated healing agents has been proven to be an effective method for microcrack repairment in the concrete structure. However, there is a lack of efficient tools to evaluate the effect of the parameters of microcapsules on the mechanical behavior of the self-healing concrete. In this paper, the evolution of the damage-healing process of microencapsulated self-healing concrete subjected to tensile loading is numerically analyzed from a microscopic perspective by using a 2D micromechanical model. Based on the deformation and propagation evolution mech
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15

Han, Kaihang, Jiann-Wen Woody Ju, Yinghui Zhu, Hao Zhang, Tien-Shu Chang, and Zhengyao Wang. "Mechanical responses of microencapsulated self-healing cementitious composites under compressive loading based on a micromechanical damage-healing model." International Journal of Damage Mechanics, April 28, 2021, 105678952110112. http://dx.doi.org/10.1177/10567895211011239.

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The cementitious composites with microencapsulated healing agents have become a class of hotspots in the field of construction materials, and they have very broad application prospects and research values. The in-depth study on multi-scale mechanical behaviors of microencapsulated self-healing cementitious composites is critical to quantitatively account for the mechanical response during the damage-healing process. This paper proposes a three-dimensional evolutionary micromechanical model to quantitatively explain the self-healing effects of microencapsulated healing agents on the damage indu
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