Electrically conductive nanocomposites for fused deposition modelling

Dorigato, Andrea; Moretti, Valter; Dul, Sithiprumnea; Unterberger, Seraphin Hubert; Pegoretti, Alessandro

doi:10.1016/j.synthmet.2017.01.009

Cited by 150 publications

(95 citation statements)

References 23 publications

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“…However, it would be rash to conclude such from this statement since the peaks of PO 4 3-at 1091, 1032, 564 and 602 cm -1 could still be detected in both hydroxyapatite and polyamide composites. Moreover, no obvious changes have been detected for the vibration frequency, indicating that no interaction took place between PO 4 3-and any functional group in PA12. Additionally, the peak of the -NH group of polyamides, located at 3291 and 1559 cm -1 shifted down to a lower frequency at 3288 and 1550cm -1 , respectively.…”

Section: Tensile Strengthmentioning

confidence: 94%

“…Basically, build orientation plays an important role in improving mechanical properties. There are three different types of orientations: horizontal, vertical and perpendicular [4]. In the present study, all samples were printed in the horizontal build direction only since most studies [7,[30][31][32] have reported on the superiority of mechanical properties for both horizontal and vertical directions compared to the perpendicular direction.…”

Section: Sample Preparationmentioning

confidence: 99%

“…Therefore, minimising the gaps between the thread lines is crucial to obtain a satisfactory performance of the FDM part. Comparing the mechanical performance between the FDM PA12 and FDM ABS, the majority of studies reported a reduction of strength [1,4,6,21], after incorporated with fillers, albeit at much lower percentages. The improvement in mechanical properties of the FDM parts can typically be observed when the nano-sized fillers or fibres, were incorporated into the polymer matrix system [4,9,42,43].…”

Section: Tensile Strengthmentioning

confidence: 99%

“…FDM can develop intricate parts and components, without the need for human intervention. This technology has enabled product customisation for smallscale production, with polymers still being the most widely used materials in the FDM process, especially acrylonitrile butadiene styrene (ABS) [1,2], polylactic acid (PLA) [3] and poly(ɛ-caprolactone) (PCL) [4,5]. FDM technology has the potential to manufacture complex parts quickly and with the added advantage of being more cost-effective as compared to other conventional methods.…”

Section: Introductionmentioning

confidence: 99%

“…However, the application of FDM to produce parts and components is limited due to exhibiting lower mechanical properties, compared to other conventional means to produce moulded parts. This originates from inherent limitations of the layering technique, resulting in poorly bonded adhesion between layers, and the formation of small portions of porosities [4] in addition to the heterogeneous microstructure of FDM parts. Despite all these weaknesses, FDM has so far been the most preferred method for productions that have very low volume needs due to the absence of considerable initial costs that come with specially tooled dies acquired by moulding techniques.…”

Section: Introductionmentioning

confidence: 99%

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The improvement of mechanical and thermal properties of polyamide 12 3D printed parts by fused deposition modelling

Rahim¹,

Abdullah²,

Akil³

et al. 2017

Express Polym. Lett.

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Abstract. This paper addresses the utilisation of fused deposition modelling (FDM) technology using polyamide 12, incorporated with bioceramic fillers (i.e. zirconia and hydroxyapatite) as a candidate for biomedical applications. The entire production process of printed PA12 is described, starting with compounding, filament wire fabrication and finally, FDM printing. The potential to process PA12 using this technique and mechanical, thermal and morphological properties were also examined. Commonly, a reduction of mechanical properties of printed parts would occur in comparison with injection moulded parts despite using the same material. Therefore, the mechanical properties of the samples prepared by injection moulding were also measured and applied as a benchmark to examine the effect of different processing methods. The results indicated that the addition of fillers improved or maintained the strength and stiffness of neat PA12, at the expense of reduced toughness and flexibility. Melting behaviours of PA12 were virtually insensitive to the processing techniques and were dependent on additional fillers and the cooling rate. Incorporation of fillers slightly lowered the melting temperature, however improved the thermal stability. In summary, PA12 composites were found to perform well with FDM technique and enabling the production of medical implants with acceptable mechanical performances for non-load bearing applications.

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Section: Tensile Strengthmentioning

confidence: 94%

Section: Sample Preparationmentioning

confidence: 99%

Section: Tensile Strengthmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The improvement of mechanical and thermal properties of polyamide 12 3D printed parts by fused deposition modelling

Rahim¹,

Abdullah²,

Akil³

et al. 2017

Express Polym. Lett.

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Polymer Composites: Reinforcing Fillers

Pegoretti

Dorigato

2019

Encyclopedia of Polymer Science and Technology

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Addition of reinforcing fillers is a well‐established method to enhance mechanical, electrical, and thermal properties of plastics. Formulation and compounding of polymer matrices with inorganic and organic fillers having peculiar morphology enables the development of new multifunctional materials. Among the physical properties affected by the introduction of fillers in plastics, particular attention has been devoted to the mechanical behavior of the resulting composites. Moreover, introduction of inorganic fillers can reduce the cost of plastics, as they are sometime less expensive than polymers. It is well known that with a correct formulation and compounding, the tensile and impact strength and elastic modulus of polymers can be considerably enhanced, allowing to extend the application of plastics in technical fields previously undreamt of. Many other physical properties, such as friction coefficient, molding shrinkage, and weatherability, can be considerably affected by filler addition. This article aims at providing an overview of the various types of fillers available in the market to reinforce plastic products. After a general introduction, the article discusses both particulate microfillers as well as nanostructured fillers. For all the fillers considered, information on their morphological behavior, important physical properties, and production processes are provided. In addition, select examples of fillers’ effectiveness in improving the properties of polymer matrices (thermoplastic, thermosetting, and elastomers) are also presented.

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Nanocomposites

Xavier

2022

Thermoplastic Polymer Composites

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Electrically conductive nanocomposites for fused deposition modelling

Cited by 150 publications

References 23 publications

The improvement of mechanical and thermal properties of polyamide 12 3D printed parts by fused deposition modelling

The improvement of mechanical and thermal properties of polyamide 12 3D printed parts by fused deposition modelling

Polymer Composites: Reinforcing Fillers

Nanocomposites

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