Microencapsulated amino‐functional polydimethylsiloxane as autonomous external self‐healing agent for epoxy systems

Abstract

shows the fracture surface of a self-healed DGEBA/mPDMS-a/mTETA (2.5 wt%, 80 C) system, indicating the breakage of microcapsules and the release of the core material. This suggests the formation of a hybrid interface from the reaction of PDMS-a with the epoxy matrix, causing an enhancement of the fracture toughness after the self-healing process. ARTICLES47569 Nonisothermal crystallization kinetic studies on melt processed poly(ethylene terephthalate)/polylactic acid blends containing graphene oxide and exfoliated graphite nanoplatelets 47636 Effects of the matrix crystallinity, dispersed phase, and processing type on the morphological, thermal, and mechanical properties of polylactide-based binary blends with poly[(butylene adipate)-co-terephthalate] and poly [(butylene succinate)-co-adipate]

Self‐healing triggering mechanism in epoxy‐based material containing microencapsulated amino‐polysiloxane

“…Epoxy resins are widely studied as matrices [ 16–18 ] in self‐healing polymer materials, as, generally, there is no need for external intervention, other than microcracks, since the crosslinking can occur at room temperature. Usually, the use of catalysts is also not necessary, since the healing agents can react with residual amines or epoxy groups within the polymer matrix.…”

Development of a dual capsule self‐healing silicone composite using silicone chemistry and poly(melamine‐urea‐formaldehyde) shells

“…11,12 The versatility of microencapsulation technologies offers an unlimited combination of core and shell materials for the selfhealing of surfaces. 13 Encapsulation of dicyclopentadiene, 3,14,15 epoxies, [16][17][18][19][20] polydimethylsiloxanes, [21][22][23][24] and isocyanates, 25 inside various polymeric shells such as ureaformaldehyde, 17,20,[26][27][28] melamine-formaldehyde, 10,29 melamine-urea-formaldehyde, [29][30][31] polymethylmethacrylate, [32][33][34] silica, 35 and so on, are investigated for self-healing purposes. The fabrication of microcapsules can be divided into physical or chemical methods.…”

The influence of size and healing content on the performance of extrinsic self‐healing coatings

“…There are three approaches for the development of self‐healing coatings including the release of healing agents from micro/nanocapsules (NCs) (Figure 1(a)), micro/nanofibers (Figure 1(b)), and vascular systems (Figure 1(c)). 32,33 Figure 1(d) shows a damaged coating containing the vascular system and release of the healing agent at the sites of damages 31 …”

“…27,28 There are three approaches for the development of self-healing coatings including the release of healing agents from micro/nanocapsules (NCs) (Figure 1(a)), micro/nanofibers (Figure 1(b)), and vascular systems (Figure 1(c)). 32,33 Figure 1(d) shows a damaged coating containing the vascular system and release of the healing agent at the sites of damages. 31 It should be noted that one of the crucial factors that significantly affect the self-healing performance and the property of the coatings, developed on the release of healing, is the size and content of healing systems embedded into the coatings.…”