دانلود مقاله ISI انگلیسی شماره 57860
عنوان فارسی مقاله

نمونه سازی سریع قطعات رسانای الکتریکی با استفاده از تکنولوژی چاپ 3D

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
57860 2009 5 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
Rapid prototyping of electrically conductive components using 3D printing technology
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Journal of Materials Processing Technology, Volume 209, Issues 12–13, 1 July 2009, Pages 5281–5285

کلمات کلیدی
نمونه سازی سریع؛ چاپ 3D - رسانایی الکتریکی؛ نانوالیاف کربنی؛ پرکولاسیون
پیش نمایش مقاله
پیش نمایش مقاله نمونه سازی سریع قطعات رسانای الکتریکی با استفاده از تکنولوژی چاپ 3D

چکیده انگلیسی

A method of rapid prototyping of electrically conductive components is described. The method is based on 3D printing technology. The prototyped model is made of plaster-based powder bound layer-by-layer by an inkjet printing of a liquid binder. The resulting model is highly porous and can be impregnated by various liquids. In a standard prototyping process, the model is impregnated by epoxy or polyurethane resin, wax solution, etc. In the test described in this paper, to obtain the electric conductivity, the model has been impregnated by a dispersion of carbon nanofibers (CNF) in epoxy resin. Surface resistivity of the model below 800 Ω/sq has been obtained when impregnated by a mixture containing less than 4 wt.% CNF. Volume resistivity of the molded and hardened CNF dispersion used for model impregnation have also been measured and a value less than 200 Ω cm has been obtained at 3 wt.% CNF content. Unexpectedly, the onset of electric conductivity (percolation threshold) occurred at lower mass fraction of CNF for a dispersion containing CNF agglomerates, when compared to the mixture with well uniformly dispersed fibers. This happened both for the impregnated model and for the molded CNF dispersion itself. An explanation of this phenomenon, based on percolation theory is given.

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