INVESTIGATION OF THE MECHANICAL BEHAVIOR OF NANOPARTICLE-REINFORCED COMPOSITES PRODUCED BY PHOTOPOLYMERIZATION-BASED 3D PRINTING

Project no. 32877 · Status: Kapanmış (Yayın bekleniyor) · 2025

Summary

<p>Additive&nbsp;manufacturing&nbsp;technologies&nbsp;have&nbsp;become&nbsp;widely&nbsp;adopted&nbsp;across&nbsp;various&nbsp;industries&nbsp;due&nbsp;to&nbsp;their&nbsp;ability&nbsp;to&nbsp;produce&nbsp;complex&nbsp;parts&nbsp;with&nbsp;high&nbsp;precision&nbsp;without&nbsp;the&nbsp;need&nbsp;for&nbsp;molds.&nbsp;Among&nbsp;these,&nbsp;the&nbsp;Digital&nbsp;Light&nbsp;Processing&nbsp;(DLP)&nbsp;method&nbsp;based&nbsp;on&nbsp;photopolymerization&nbsp;offers&nbsp;superior&nbsp;surface&nbsp;quality;&nbsp;however,&nbsp;it&nbsp;suffers&nbsp;from&nbsp;limitations&nbsp;in&nbsp;mechanical&nbsp;properties.&nbsp;This&nbsp;project&nbsp;aims&nbsp;to&nbsp;improve&nbsp;the&nbsp;mechanical&nbsp;performance&nbsp;of&nbsp;photopolymer-based&nbsp;parts&nbsp;produced&nbsp;by&nbsp;DLP&nbsp;through&nbsp;zirconia&nbsp;(ZrO₂)&nbsp;nanoparticle&nbsp;reinforcement.</p><p>Within&nbsp;this&nbsp;scope,&nbsp;standard&nbsp;test&nbsp;specimens&nbsp;were&nbsp;fabricated&nbsp;using&nbsp;photopolymer&nbsp;resins&nbsp;containing&nbsp;0.5&nbsp;wt%,&nbsp;1&nbsp;wt%,&nbsp;and&nbsp;2&nbsp;wt%&nbsp;ZrO₂&nbsp;nanoparticles,&nbsp;and&nbsp;tensile,&nbsp;flexural,&nbsp;impact,&nbsp;hardness,&nbsp;and&nbsp;wear&nbsp;tests&nbsp;were&nbsp;conducted.&nbsp;The&nbsp;results&nbsp;indicated&nbsp;that&nbsp;nanoparticle&nbsp;addition&nbsp;generally&nbsp;improved&nbsp;the&nbsp;mechanical&nbsp;properties.&nbsp;In&nbsp;particular,&nbsp;tensile&nbsp;strength,&nbsp;flexural&nbsp;strength,&nbsp;elastic&nbsp;modulus,&nbsp;and&nbsp;impact&nbsp;strength&nbsp;reached&nbsp;their&nbsp;highest&nbsp;values&nbsp;at&nbsp;1&nbsp;wt%&nbsp;reinforcement,&nbsp;while&nbsp;a&nbsp;decrease&nbsp;in&nbsp;performance&nbsp;was&nbsp;observed&nbsp;at&nbsp;higher&nbsp;concentrations&nbsp;due&nbsp;to&nbsp;agglomeration&nbsp;and&nbsp;poor&nbsp;dispersion.&nbsp;The&nbsp;best&nbsp;wear&nbsp;performance&nbsp;was&nbsp;obtained&nbsp;at&nbsp;0.5&nbsp;wt%,&nbsp;whereas&nbsp;only&nbsp;a&nbsp;limited&nbsp;increase&nbsp;in&nbsp;hardness&nbsp;was&nbsp;observed.</p><p>Although&nbsp;similar&nbsp;studies&nbsp;in&nbsp;the&nbsp;literature&nbsp;mainly&nbsp;focus&nbsp;on&nbsp;biomedical&nbsp;and&nbsp;dental&nbsp;applications,&nbsp;this&nbsp;study&nbsp;is&nbsp;significant&nbsp;in&nbsp;terms&nbsp;of&nbsp;its&nbsp;contribution&nbsp;to&nbsp;engineering&nbsp;applications.&nbsp;In&nbsp;conclusion,&nbsp;ZrO₂&nbsp;nanoparticle&nbsp;reinforcement&nbsp;is&nbsp;effective&nbsp;in&nbsp;enhancing&nbsp;the&nbsp;mechanical&nbsp;performance&nbsp;of&nbsp;photopolymer-based&nbsp;3D&nbsp;printed&nbsp;parts,&nbsp;and&nbsp;the&nbsp;optimum&nbsp;reinforcement&nbsp;ratio&nbsp;is&nbsp;a&nbsp;critical&nbsp;parameter.&nbsp;The&nbsp;findings&nbsp;of&nbsp;this&nbsp;study&nbsp;have&nbsp;the&nbsp;potential&nbsp;to&nbsp;contribute&nbsp;to&nbsp;the&nbsp;development&nbsp;of&nbsp;lighter,&nbsp;more&nbsp;durable,&nbsp;and&nbsp;high-performance&nbsp;components,&nbsp;particularly&nbsp;in&nbsp;sectors&nbsp;such&nbsp;as&nbsp;automotive.</p><p><strong>Keywords:</strong>&nbsp;Additive&nbsp;manufacturing,&nbsp;Photopolymerization,&nbsp;DLP,&nbsp;3D&nbsp;printing,&nbsp;Zirconium&nbsp;dioxide&nbsp;(ZrO₂),&nbsp;Mechanical&nbsp;properties</p>

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