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Synthesis of restorative microcapsules having vinyl ester healing medicine for hybrid resin/modified carbon fiber self‐healing composites
Author(s) -
K Venkata Chalapathi,
Cheedarala Ravi Kumar,
Song Jungil
Publication year - 2021
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.50227
Subject(s) - materials science , composite material , silane , vinyl ester , flexural strength , epoxy , self healing , composite number , core (optical fiber) , fourier transform infrared spectroscopy , fiber , chemical engineering , copolymer , polymer , medicine , alternative medicine , pathology , engineering
In this study, we aimed to synthesize restorative microcapsules using aminopropyl triethoxy silane through a combination of both microemulsions with a sol–gel technique and vinyl ester resin used as a healing component. The characteristic features of the microcapsules were analyzed by FTIR, XRD, and SEM and confirmed by the formation of core‐shell microspheres with desired properties. The fabricated core‐shell microspheres were reinforced into a hybrid resin (vinyl ester (80): epoxy (20)/silane modified carbon fiber composites) using the hand lay‐up method. The effect of the microspheres on the mechanical and self‐healing properties of composites was investigated. The mechanical test results showed a significant improvement in the flexural and impact strength by approximately 23% and 30%, respectively. The healing property was observed using the flexural test and the results indicated that the recovered strength almost 74% of the composites after initial damage was due to the healing medicine released from the broken portion of the core‐shell microspheres that filled and cured the cracked area of the composites.