Self-healing high temperature shape memory polymer

Kong, Deyan; Li, Jie; Guo, Anru; Zhang, Xintong; Xiao, Xinli

doi:10.1016/j.eurpolymj.2019.109279

Cited by 57 publications

(23 citation statements)

References 47 publications

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“…Most studies that focus on self-healing polymers are ones that operate under low or medium T g , whereas high T g polymers, which would be suited for self-deployable aerospace or jet propulsion applications, are not as well studied. A shape memory variant of polyimide would be one such polymer, as it is capable of high T g , with temperatures around 218°C, and self-healing (which occurs at 243°C) at the cost of lowered mechanical properties and a lower T g (235°C) for the non-self-healing variant than the non-self-healing variant, but that may well be due to the polystyrene, and another material may be better suited [37]. Polyimides are defined by a rigid heterocyclic imide functional group and are noted for the interaction of their electron-rich nitrogen atom and their electrondeficient carbonyl group located in the backbone of the polyimide [38].…”

Section: Polyimidementioning

confidence: 99%

“…However, any attempts at forming stable materials higher than 100°C are frustrated by the issue that exposure to large amounts of thermal energy affects the rate-dependent processes that occur within the material and therefore affects the microstructural stability, its resistance to deformation, the recovery, and the environmental resistance [11]. Matching the developments has been the development of high-temperature shape memory polymers; one such example would be that of a selfhealing high-temperature polyimide which has an operational temperature of 243°C if polystyrene is incorporated into the polymer [37].…”

Section: Designsmentioning

confidence: 99%

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Shape Memory Corrosion-Resistant Polymeric Materials

Jacobson

Iroh

2021

International Journal of Polymer Science

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Shape memory alloys, materials capable of being deformed and maintaining the deformation and additionally capable of returning to the initial position, are valued for a range of applications from actuators to flexible microdevices. Maintaining the properties that make them useful, their ability to deform and reform, requires that shape memory alloys must be protected against corrosion, in which the integration of shape memory polymers can act as a means of protection. Thus, this review is to highlight the utility of self-healing shape memory polymers as a means of corrosion inhibition. Therefore, this review discusses the benefits of utilizing self-healing shape memory polymers for the protection of shape memory, several types of self-healing polymers that could be used, means of improving or tailoring the polymers towards specific usages, and future prospects in designing a shape memory polymer for use in corrosion inhibition.

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Section: Polyimidementioning

confidence: 99%

Section: Designsmentioning

confidence: 99%

Shape Memory Corrosion-Resistant Polymeric Materials

Jacobson

Iroh

2021

International Journal of Polymer Science

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“…139 Although not reviewed here, other strategies with blends and composites of high-T g and low-T g components have succeeded in making SMP systems. [182][183][184][185][186][187][188] Also considering reversible dynamic networks, many SMP systems contain nonpermanent crosslinks that break and reform, 125 including ionic interactions, 189 Diels-Alder adducts, 190 metal-ligand bonds, 191 etc. For this subsection, only shape memory networks will be reviewed and we will revisit this concept of reversible dynamic networks 125 in the next section.…”

Section: State Of the Artmentioning

confidence: 99%

Stimuli‐responsive mechanical properties in polymer glasses: challenges and opportunities for defense applications

Dennis

Savage

Mrozek

et al. 2020

Polymer International

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The potential utility that responsive glasses provide in the areas of aeronautics, protection and unmanned systems is reviewed in this article. The article focuses on two broad classes of stimuli, photo and thermal, to better illustrate the challenges and convey some of the potential in developing these materials for the often extreme operational environments of defense applications. Three response mechanisms are outlined to provide a range of mechanical behaviors on demand: (i) shape-changing functionalities which locally yield or soften the material to stimulate chain mobility; (ii) bond forming (or breaking) chemistries which increase (or decrease) the stiffness of the material; and (iii) energy absorbing groups which convert the incoming stimuli into a spatially controlled heating and result in a designed softening of the material. Overall, continuing to develop responsive polymer glasses that respond rapidly and efficiently under low energy inputs will be critical for future defense applications.

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“…SMPs have a wide range of modulus varying from ∼MPa to ∼GPa Lendlein and Kelch (2005) and relatively fast response capability depending on actuation temperatures (Kong et al, 2021a). SMPs with various functions have been developed, such as SMP with high recovery stress reinforced by carbon fibers, self-healing SMPs (Lee et al (2015), Kong et al (2019) and SMP with shielding electromagnetic interference (Kong et al, 2021b). The shape-shifting behavior of the SMP has been widely used in 4D printing.…”

Section: Introductionmentioning

confidence: 99%

Design of Shape Reconfigurable, Highly Stretchable Honeycomb Lattice With Tunable Poisson’s Ratio

et al. 2021

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The mechanical behaviors of lattice structures can be tuned by arranging or adjusting their geometric parameters. Once fabricated, the lattice’s mechanical behavior is generally fixed and cannot adapt to environmental change. In this paper, we developed a shape reconfigurable, highly stretchable lattice structure with tunable Poisson’s ratio. The lattice is built based on a hexagonal honeycomb structure. By replacing the straight beam with curled microstructure, the stretchability of the lattice is significantly improved. The Poisson’s ratio is adjusted using a geometric angle. The lattice is 3D printed using a shape memory polymer. Using its shape memory effect, the lattice demonstrates tunable shape reconfigurability as the ambient temperature changes. To capture its high stretchability, tunable Poisson’s ratio and shape reconfigurability, a phase evolution model for lattice structure is used. In the theoretical model, the effects of temperature on the material’s nonlinearity and geometric nonlinearity due to the lattice structure are assumed to be decoupled. The theoretical shape change agrees well with the Finite element results, while the theoretical model significantly reduces the computational cost. Numerical results show that the geometrical parameters and the ambient temperature can be manipulated to transform the lattice into target shapes with varying Poisson’s ratios. This work provides a design method for the 3D printed lattice structures and has potential applications in flexible electronics, soft robotics, and biomedicine.

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Self-healing high temperature shape memory polymer

Cited by 57 publications

References 47 publications

Shape Memory Corrosion-Resistant Polymeric Materials

Shape Memory Corrosion-Resistant Polymeric Materials

Stimuli‐responsive mechanical properties in polymer glasses: challenges and opportunities for defense applications

Design of Shape Reconfigurable, Highly Stretchable Honeycomb Lattice With Tunable Poisson’s Ratio

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