Graphene Oxide-Modified Microcapsule Self-Healing System for 4D Printing

Self-healing materials as a type of promising smart are gradually applied to electronics, biology, and engineering. In this study, we used in situ polymerization make melamine-formaldehyde (MF) resin microcapsules wrap the epoxy oxide repairing agent Cu(MI) 4 Br 2 latent-curing protect E-51 from broken microcapsules. addition, graphene was reinforcing phase through its two-dimensional-layered structure increase tensile strength 41.91 MPa, which is higher than initial materials. The capsules agents were uniformly distributed according digital photos scanning electron microscope (SEM) pictures. It worth noting that mechanical can be restored 35.65 MPa after heating 130°C for h repair damage, self-healing efficiency reached up 85.06%. Furthermore, also fabricated 4D printed material with 50.93 3D printer. obtained showed excellent effect, recovery rate 87.22%. This study confirms designed system has potential applications many areas due performance, provides valuable guidance designing system.