Self‐Healing Materials in Aerospace Applications

Kumar, M. Harikrishna; Moganapriya, C.; Kumar, Alok; Rathanasamy, Rajasekar; Gobinath, V. K.

doi:10.1002/9781119710219.ch17

Cited by 6 publications

(2 citation statements)

References 23 publications

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“…The concept of self‐healing in nature provides a good solution for the recovery of cracks 8–9,10 . Since 2001, White et al 11 firstly synthesized a self‐healing material, the concept of introducing this self‐healing concept in artificial materials has attracted huge concerns so far, and has been widely used in bionics, 12 electronics, 13 military industry, 14 aerospace, 15 medicine 16 and other fields that are difficult to repair artificially and require high life. According to repair mechanism, these materials can be divided into two types: external self‐healing materials and intrinsic self‐healing materials 17,18 .…”

Section: Introductionmentioning

confidence: 99%

Microcrack self‐healing capability of waterborne polyurethane/polyacrylate composites with dynamic disulfide bond

Liang

Wang

Sun

et al. 2023

J of Applied Polymer Sci

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In this paper, a series of self-healing waterborne polyurethane/polyacrylate composites (SWPUA) with different disulfide content on the main chain were synthesized. The SWPUAs were synthesized from isophorone diisocyanate, dimethylolpropionic acid, polyether diol and bis(2-hydroxyethyl) disulfide (HEDS). The structure of the products was characterized by IR and Raman spectra. The effects of different content of HEDS on dispersion stability, mechanical property and self-healing properties (including tensile strength and breaking elongation) of SWPUAs were studied. The results showed that all the prepared SWPUAs have excellent dispersion stability, thermal stability, self-healing efficiency and certain hydrophobic capacity. Thereinto, SWPUA-1 and SWPUA-2 products with HEDS content of 0.0025 mol and 0.0050 mol have the best repair efficiency. They can recover 101.03% and 102.18%, respectively, after 3 h of repair at 75 C. In addition, SWPUA-1 has the highest repeatedly repair efficiency of 91% for tensile strength but 75% for breaking elongation because of the influence of physical entanglement and chain link.

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Section: Introductionmentioning

confidence: 99%

Microcrack self‐healing capability of waterborne polyurethane/polyacrylate composites with dynamic disulfide bond

Liang

Wang

Sun

et al. 2023

J of Applied Polymer Sci

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“…[11][12][13] Many types of self-healing agents are available and tested in structural applications. [14,15] They range from thermoplastics healants to microencapsulated thermosetting agents based on hollow fibers that bring the agent to the core of the matrix, where crack growth may initiate. In the last two decades, in the quest to increase the market share of polymer systems for structural components in the transportation industry, such as automotive and aerospace, the practitioners and researchers have focused their attention on polymer composites, using fillers of different nature and types, such as synthetic and natural fibers, fabrics and carbonaceous materials.…”

Section: Introductionmentioning

confidence: 99%

A review on self‐healing polymers and polymer composites for structural applications

et al. 2022

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Polymer composites when employed for structural applications undergo dynamic stresses and strains that initiate fatigue‐induced microcracks, which by their coalescence cause the failure of the materials, thus limiting their service life. To overcome this hurdle, one of the recent approaches relies on the development of smart self‐healing polymers that, analogously to biological systems, can use damage as a trigger to activate the self‐repair phenomenon, thus extending their service life. This work reviews the self‐healing approach in polymer‐based materials for structural applications. It focuses on three main aspects, which are also explained with schematics that illustrate the mechanisms involved. The first aspect describes the different strategies adopted for self‐healing polymeric structures, the self‐healing agents used, as well as the reactions responsible for repairing the damage. The second part is focused on the methods used to disperse the self‐healing agents and catalysts within the polymer systems. The third section details the different self‐healing mechanisms and the effectiveness of self‐healing approaches in terms of mechanical and dynamical‐mechanical behavior of materials. Challenges and future research outlook highlighting the importance of relaxation time and fatigue characterization and to understand the mechanisms and possible improvements are also presented.

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State of Art Review on Applications and Mechanism of Self-Healing Materials and Structure

Kumar

Patel

Kumar

et al. 2022

Arch Computat Methods Eng

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Self‐Healing Materials in Aerospace Applications

Cited by 6 publications

References 23 publications

Microcrack self‐healing capability of waterborne polyurethane/polyacrylate composites with dynamic disulfide bond

Microcrack self‐healing capability of waterborne polyurethane/polyacrylate composites with dynamic disulfide bond

A review on self‐healing polymers and polymer composites for structural applications

State of Art Review on Applications and Mechanism of Self-Healing Materials and Structure

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