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Fabrication of Polylactide Nanocomposite Filament Using Melt Extrusion and Filament Characterization for 3D Printing

機(jī)譯：使用熔體擠出和3D打印的纖維特性表征制備聚乳酸納米復(fù)合纖維

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摘要

Fused deposition modeling (FDM) technology uses thermoplastic filament for layer by layer fabrication of objects. To make functional objects with desired properties, composite filaments are required in the FDM. In this thesis, less expensive mesoporous Nano carbon (NC) and carbon nanotube (CNT) infused in Polylactide (PLA) thermoplastic filaments were fabricated to improve the electrical properties and maintain sufficient strength for 3D printing. Solution blending was used for nanocomposite fabrication and melt extrusion was employed to make cylindrical filaments. Mechanical and electrical properties of 1 to 20 wt% of NC and 1 to 3 wt% of CNT filaments were investigated and significant improvement of conductivity (3.76 S/m) and sufficient yield strength (35MPa) were obtained. Scanning electron microscopy (SEM) images exhibited uniform dispersion of nanoparticles in polymer matrix and differential scanning calorimetry (DSC) results showed no significant changes in the glass transition temperature (Tg) for all the compositions. Perspective uses of this filament are for fabrication of electrical wires in 3D printed robots, drones, prosthetics, orthotics and others.
機(jī)譯：熔融沉積建模（FDM）技術(shù)使用熱塑性長(zhǎng)絲逐層制造對(duì)象。為了使功能對(duì)象具有所需的特性，F(xiàn)DM中需要復(fù)合長(zhǎng)絲。在本文中，制造了注入到聚乳酸（PLA）熱塑性細(xì)絲中的較便宜的介孔納米碳（NC）和碳納米管（CNT），以改善電性能并保持3D打印的足夠強(qiáng)度。溶液共混用于納米復(fù)合材料的制造，熔體擠出用于制造圓柱形長(zhǎng)絲。研究了1至20 wt％的NC和1至3 wt％的CNT細(xì)絲的機(jī)械和電氣性能，并顯著提高了電導(dǎo)率（3.76 S / m）和足夠的屈服強(qiáng)度（35MPa）。掃描電子顯微鏡（SEM）圖像顯示了納米顆粒在聚合物基質(zhì)中的均勻分散，差示掃描量熱法（DSC）結(jié)果表明，所有組合物的玻璃化轉(zhuǎn)變溫度（Tg）均無(wú)明顯變化。這種燈絲的透視用途是用于3D打印機(jī)器人，無(wú)人機(jī)，假肢，矯形器等中的電線制造。

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  • 作者

    Jain, Shrenik Kumar.;

  • 作者單位

    The University of Texas at Dallas.;

  • 授予單位 The University of Texas at Dallas.;
  • 學(xué)科 Mechanical engineering.;Materials science.
  • 學(xué)位 M.S.
  • 年度 2017
  • 頁(yè)碼 70 p.
  • 總頁(yè)數(shù) 70
  • 原文格式 PDF
  • 正文語(yǔ)種 eng
  • 中圖分類(lèi) 康復(fù)醫(yī)學(xué);
  • 關(guān)鍵詞

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