Sresultsindicatedthatwiththeincreasingofetchingdepth,anicfluorinereducedgradually,formingagradientdistribution.Afracture-basedprotocolisestablishedforcharacterizinghealingefficiencyoftheself-healingepoxy.positeismeasuredusingadumbbell-shapedspecimen.Theadditionamountofthefluorinesilanecouplingagentaffectthehealingefficiency.WhenthecouplingagentWKBM7803%=2%,thesurfaceofsubstratescratchafterself-healingwasverysmooth.Thefirstself-healingefficiencyreached58.9%andsecondaryself-healingefficiencyreached53.6%.Comparedwiththefirstself-healing,mechanicalpropertiesofepoxymatrixwerenotdecreasedobviouslyafterthesecondself-healing,whichcouldrealizerepeatedlyself-healing.Theresultsofsimulationandoptimizationofactivecelldistributionandresponsetomigrationofcrackstressobtainedbyfiniteelementmethodshowedthat
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