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DEVELOPMENT OF FILAMENTS FOR ADDITIVE MANUFACTURING OF ABS WITH DIFFERENT CARBON MATERIALS FOR ELECTRONIC HOUSING

Grant number: 21/10136-3
Support Opportunities:Scholarships in Brazil - Doctorate
Effective date (Start): April 01, 2022
Status:Discontinued
Field of knowledge:Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
Principal Investigator:Luiz Antonio Pessan
Grantee:Erick Gabriel Ribeiro dos Anjos
Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
Associated scholarship(s):23/10475-8 - Development of high-performance abs nanocomposite filaments with carbon nanofillers for additive manufacturing of functional electromagnetic parts, BE.EP.DR

Abstract

Filament Fusion Fabrication (FFF) is an additive manufacturing process that presents many advantages, such as low cost, design variety, and flexibility for modifications. However, to scale this process for new industrial applications, multifunctional and processable materials are needed. In this way, electromagnetic shielding is required for electronics housing, and thermoplastics nanocomposites modified with carbon material can be used for these applications. In this study, multi-walled carbon nanotubes (MWCNT), graphene nanoplates (GNP), and nanometric carbon black (CB) will be used. In this regard, Brazil already has national pilot plants for producing MWCNT and GNP, and the Brazilian government is supporting projects to apply them. This work proposes the development of nanocomposites using a copolymer of acrylonitrile-butadiene-styrene (ABS) as a matrix, one of the most applied thermoplastics in the FFF process and the electronics industry. The ABS will be modified with carbon nanofillers (MWCNT, GNP, and CB), and compare Brazilian GNP and MWCNT performance aiming to reduce the final cost of the product and make it competitive. First, the extrusion process will produce the filaments of nanocomposites with a single nanofillers and hybrids systems (mix of them). Second, specimens will be produced by the FFF process, varying printing parameters aiming at optimizing the specimen's mechanical and EMI SE properties, and injection molded specimens will be prepared to evaluate the FFF process effect compared to the bulk material. Finally, the printed specimens will be characterized by mechanical tests (uniaxial tensile and Izod impact resistance), thermal analysis (differential scanning calorimetry, dynamic-mechanical analysis, and thermogravimetric analysis), electrical impedance, electromagnetic shielding efficiency (EMI SE), and morphological evaluation. As a main result, it is expected to understand this technology better and obtain multifunctional nanocomposite filaments with thermal, mechanical, electrical, and electromagnetic properties for making electronics housing parts.

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
DOS ANJOS, ERICK GABRIEL RIBEIRO; BRAZIL, TAYRA RODRIGUES; MORGADO, GUILHERME FERREIRA DE MELO; MONTAGNA, LARISSA STIEVEN; BRAGA, NATALIA FERREIRA; ANTONELLI, EDUARDO; MARINI, JULIANO; REZENDE, MIRABEL CERQUEIRA; PASSADOR, FABIO ROBERTO. Influence of MWCNT aspect ratio on the rheological, electrical, electromagnetic shielding, and mechanical properties of polycarbonate melt mixed nanocomposites. JOURNAL OF POLYMER RESEARCH, v. 30, n. 2, p. 16-pg., . (21/10136-3, 20/12501-8)
DOS ANJOS, ERICK GABRIEL RIBEIRO; BRAZIL, TAYRA RODRIGUES; MORGADO, GUILHERME FERREIRA DE MELO; ANTONELLI, EDUARDO; MEDEIROS, NILA CECILIA DE FARIA LOPES; SANTOS, ADELINA PINHEIRO; INDRUSIAK, TAMARA; BALDAN, MAURICIO RIBEIRO; REZENDE, MIRABEL CERQUEIRA; PESSAN, LUIZ ANTONIO; et al. Graphene related materials as effective additives for electrical and electromagnetic performance of epoxy nanocomposites. FLATCHEM, v. 41, p. 15-pg., . (21/10136-3)

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