Enhanced thermo-mechanical properties of acrylic resin reinforced with silanized alumina whiskers

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• 作者：Omar Yerro ; Vesna Radojević ; Ivana Radović ; Aleksandar Kojović ; Petar S. Uskoković ; Du&scaron ; ica B. Stojanović ; ^{duca@tmf.bg.ac.rs" class="auth_mail" title="E-mail the corresponding author} ; Radoslav Aleksić
• 关键词：Self-healing composites ; Electrospinning ; Nanoindentation ; Impact testing
• 刊名：Ceramics International
• 出版年：2016
• 出版时间：July 2016
• 年：2016
• 卷：42
• 期：9
• 页码：10779-10786
• 全文大小：5209 K

文摘

The acrylic resin reinforced with silanized alumina whiskers with self-healing (SH) agents was synthesized. The self-healing system consisted of microcapsules with the healing agent dicyclopentadiene (DCPD) and modified Grubbs' catalyst in PS electrospun nanofibers. The content of alumina whiskers was 3% w/w, and the concentration of PS fibers and UF microcapsules in the samples were 1% w/w each. The embedded silanized alumina whiskers achieved higher T_g and absorbed impact energy in relation to unmodified alumina whiskers. The nanoindentation test revealed the reduced modulus increased for about 65% and hardness increased is about 90% for composites with silanized whiskers. Cracks were induced on the composite surface using the low energy impact test machine. The self-healing efficiency of 74% was approved by the repeated impact test after 96 h.