Shape memory polymer-based self-healing composites

Ji, Gefu; Zhang, P.; Nji, Jones; John, Manu; Li, Guoqiang

doi:10.1016/b978-1-78242-280-8.00011-x

Cited by 9 publications

(14 citation statements)

References 186 publications

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“…Very recently, introduction of supramolecular polymers, which were previously known for their self‐healing character, on CFRP was proven a promising approach to provide non‐autonomous self‐healing . Finally, other two types of self‐healing mechanisms that are based on the shape memory effect exist and have been extensively reported in literature . The first one is based on shape memory assisted self‐healing mechanism while the second one is based on close‐then‐heal (CTH) mechanism.…”

Section: Introductionmentioning

confidence: 99%

“…The first one is based on shape memory assisted self‐healing mechanism while the second one is based on close‐then‐heal (CTH) mechanism. In CTH mechanism, the crack first closes through confined expansion of the shape memory polymer matrix and then is healed by embedded thermoplastic particles …”

Section: Introductionmentioning

confidence: 99%

“…The selfhealing technologies recently developed by engineers aim to extend the service life and reliability of epoxy resins and subsequently of epoxy-based CFRPs. Self-healing materials are divided into two major categories; the autonomous or extrinsic [7][8][9][10][11] and the nonautonomous or intrinsic [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30] self-healing materials. The capsule- 7,8 and vascular-based [9][10][11] self-healing systems belong to the first category.…”

Section: Introductionmentioning

confidence: 99%

“…[20][21][22][23] Finally, other two types of self-healing mechanisms that are based on the shape memory effect exist and have been extensively reported in literature. 24 The first one is based on shape memory assisted self-healing mechanism while the second one is based on close-then-heal (CTH) mechanism. In CTH mechanism, the crack first closes through confined expansion of the shape memory polymer matrix and then is healed by embedded thermoplastic particles.…”

Section: Introductionmentioning

confidence: 99%

“…In CTH mechanism, the crack first closes through confined expansion of the shape memory polymer matrix and then is healed by embedded thermoplastic particles. 24 A promising approach to incorporate an intrinsic or nonautonomous self-healing functionality to the epoxy resin and its composites is based on the DA and retro-DA reactions. [25][26][27][28][29][30][31][32][33][34][35][36][37] The first report on Diels-Alder (DA) reaction by Kennedy and Castner dates back in 1979.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Healing of carbon fiber reinforced plastics by Diels–Alder based polymers: Effects of healing agent concentration and curing cycle

Κοτρώτσος

Tsokanas

Tsantzalis

et al. 2019

J of Applied Polymer Sci

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Self‐healing resin (Bismaleimide prepolymer, BMI pp) based on Diels–Alder reaction mechanism was integrated into high performance carbon fiber reinforced plastics (CFRPs). Reference and BMI pp modified CFRPs were manufactured by incorporating grains of the self‐healing agent (SHA) in the mid‐thickness interlaminar region through sieving. First, the effect of the SHA concentration on the toughening and healing performance of CFRPs was studied under mode I fracture loading. The SHA was able to enhance the interlaminar fracture toughness of the composite to a certain extent and also to offer a moderate thermally activated healing functionality. Also, the effect of the curing temperature on the same results was studied; it was found the decrease of the curing temperature slightly decreases the fracture toughness while increases the healing efficiency of the composite. Finally, optical microscopy examinations were conducted and three‐point bending tests were utilized to study the in‐plane mechanical properties of the composites. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47478.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Healing of carbon fiber reinforced plastics by Diels–Alder based polymers: Effects of healing agent concentration and curing cycle

Κοτρώτσος

Tsokanas

Tsantzalis

et al. 2019

J of Applied Polymer Sci

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An investigation on the performance of epoxy vitrimers based on disulfide bond

Zhu

Hao

et al. 2021

J of Applied Polymer Sci

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The research for self-healing epoxy vitrimers has attracted a lot of attention over the years. However, due to the special structure of the epoxy molecular chain, which limits its movement ability, epoxy vitrimers usually need to be healed under high temperature and pressure. So it is relatively difficult to healing. Here, a new type of cross-linked network is obtained by cross-linking hydrogenated bisphenol A epoxy resin and polypropylene glycol diglycidyl ether (PPGDGE) as hard and soft segments with an amine curing agent containing disulfide bonds. The addition of PPGDGE can improve the mobility of the molecular chains in the cross-linked network we designed, thereby obtaining a novel epoxy vitrimers with better healing properties. The effect of PPGDGE content on the mechanical properties and self-healing properties of the material was studied. The ideal sample HEP-3 has a good tensile strength (33.4 MPa) and a completely broken sample can achieve a good self-healing rate (71.5%) at 100 C for 3 h without high pressure. In addition, the ideal sample also has excellent shape memory properties (shape memory fixity ratio R f = 97.1%, shape recovery ratio R r = 94.9%). Moreover, due to the existence of the dynamic disulfide bond introduced by the curing agent 2-aminophenyl disulfide, compared with traditional thermosetting epoxy resins, epoxy vitrimers prepared by us can be reshaped or postprocessed like thermoplastic polymers under specific conditions. These characteristics will become the guarantee for expanding the application range of epoxy materials.

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Active composites based on shape memory polymers: overview, fabrication methods, applications, and future prospects

Melly

Liu

et al. 2020

J Mater Sci

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Shape memory polymer-based self-healing composites

Cited by 9 publications

References 186 publications

Healing of carbon fiber reinforced plastics by Diels–Alder based polymers: Effects of healing agent concentration and curing cycle

Healing of carbon fiber reinforced plastics by Diels–Alder based polymers: Effects of healing agent concentration and curing cycle

An investigation on the performance of epoxy vitrimers based on disulfide bond

Active composites based on shape memory polymers: overview, fabrication methods, applications, and future prospects

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