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Development of Thermoplastic Composites for Fused Deposition Modeling-Type 3-D Printers
Başlık:
Development of Thermoplastic Composites for Fused Deposition Modeling-Type 3-D Printers
Yazar:
Patel, Kunal, author.
ISBN:
9780355961386
Yazar Ek Girişi:
Fiziksel Tanımlama:
1 electronic resource (140 pages)
Genel Not:
Source: Masters Abstracts International, Volume: 57-06M(E).
Advisors: Larry Peel Committee members: Mohammad Hossian; Yue Zhang.
Özet:
Fused deposition modeling -- type 3-D printing has greatly increased in recent years but there is still a demand for stronger and stiffer materials. The objective of this work is to extrude and test various types of thermoplastic composite filament to be used for 3-D printing. Acrylonitrile butadiene styrene thermoplastics was combined with various lengths of fiberglass. Using these thermoplastic composites, many specimens were prepared per ASTM D638 by compression molding and tested. The fiberglass was introduced to increase mechanical strength and stiffness of the thermoplastic filament. Three types of fiber sizing were evaluated, the original epoxy-based sizing, an alkoxysilane Gelest sizing, and a water-based Michelman sizing. One hundred specimens were fabricated. Specimens varied by sizing, by fiberglass lengths, and by fiberglass volume fraction. Out of all the specimens tested, those with Michelman sizing produced the most consistent and overall best bonding. Those with Gelest sizing produced the highest and lowest values. Specimens with Epoxy sizing produced almost as good results, and no sizing was the worst. Mechanical strength and stiffness were not improved as expected because fiber lengths were much shorter than advertised. Other possible reasons include incomplete mixing of materials, processing errors, voids in specimens, and improper treatment of fibers with sizing. FDM thermoplastic filament of 1.75 mm diameter was extruded and successfully used on a ROBO 3-D FDM printer to 3-D print objects.
Notlar:
School code: 1187
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Yer Numarası | Demirbaş Numarası | Shelf Location | Lokasyon / Statüsü / İade Tarihi |
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