Insights into the effects of epoxy resin infiltration on powder aging issue induced by powder recycling in powder bed fusion of Nylon12 materials

Guo, Anfu; Wang, Jin; Tang, Rongji; Kong, He; Kong, Dekun; Qu, Peng; Wang, Shaoqing; Wang, Hongbing; Hu, Yingbin

doi:10.1016/j.jmrt.2023.02.003

Cited by 12 publications

(9 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Regarding the mechanical strength of CSH, this study coincides with the results obtained by Frascati (Frascati, 2007), where different binders were used with tensile strengths between 9.5 and 15 MPa. As in this study, the use of epoxy resin as an infiltration agent for PA12R has been attempted to reduce aging and provide better resistance to the parts extracted from the SLS process (Guo et al. , 2023).…”

Section: Discussionmentioning

confidence: 99%

“…Commonly, PA12 recycled is mixed with 30%-50% of virgin powder to refresh the properties (Gomes et al, 2022a;Wegner et al, 2014). However, even after refreshing an aging powder, the mechanical (Gomes et al, 2022b;Guo et al, 2023;Lopes et al, 2021;Mwania et al, 2020;Yao et al, 2020) and thermal properties (Alo et al, 2023a;He et al, 2022;Mwania et al, 2020;Wudy and Drummer, 2019;Yang et al, 2021) are affected, while the average particle size does not change significantly (Al Amin et al, 2022;Arbelaez Ríos et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…However, even after refreshing an aging powder, the mechanical (Gomes et al. , 2022b; Guo et al. , 2023; Lopes et al.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Recovery of residual polyamide (PA12) from polymer powder bed fusion additive manufacturing process through a binder jetting process

Balderrama-Armendariz,

Arbelaez-Rios,

Martel-Estrada

et al. 2024

RPJ

View full text Add to dashboard Cite

Purpose This study aims to propose the reuse of PA12 (powder) in another AM process, binder jettiinng, which is less sensitive to the chemical and mechanical degradation of the powder after multiple cycles in the laser system. Design/methodology/approach The experimental process for evaluating the reuse of SLS powders in a subsequent binder jetting process consists of four phases: powder characterization, bonding analysis, mixture testing and mixture characteristics. Analyses were carried out using techniques such as Fourier Transform Infrared Spectroscopy, scanning electron microscopy, thermogravimetric analysis and stress–strain tests for tension and compression. The surface roughness, color, hardness and density of the new mixture were also determined to find physical characteristics. A Taguchi design L8 was used to search for a mixture with the best mechanical strength. Findings The results indicated that the integration of waste powder PA12 with calcium sulfate hemihydrate (CSH) generates appropriate particle distribution with rounded particles of PA12 that improve powder flowability. The micropores observed with less than 60 µm, facilitated binder and infiltrant penetration on 3D parts. The 60/40 (CSH-PA12) mixture with epoxy resin postprocessing was found to be the best-bonded mixture in mechanical testing, rugosity and hardness results. The new CSH-PA12 mixture resulted lighter and stronger than the CSH powder commonly used in binder jetting technology. Originality/value This study adds value to the polymer powder bed fusion process by using its waste in a circular process. The novel reuse of PA12 waste in an established process was achieved in an accessible and economical manner.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Recovery of residual polyamide (PA12) from polymer powder bed fusion additive manufacturing process through a binder jetting process

Balderrama-Armendariz,

Arbelaez-Rios,

Martel-Estrada

et al. 2024

RPJ

View full text Add to dashboard Cite

show abstract

“…oxidation of the polymer chain. 44,45 In hot and humid environments, the failure mechanism of epoxy resin occurs when water penetrates the material and occupies the free volume. Some water molecules react with the material, causing the main chain to break and reorganize, gradually producing micro-cracks.…”

Section: Effect Of Hydrothermal Aging On the Resin Matrixmentioning

confidence: 99%

“…Epoxy resin systems can be degraded in harsh, hot, and humid environments. One of the most critical results of epoxy resin aging is the oxidation of the polymer chain 44,45 . In hot and humid environments, the failure mechanism of epoxy resin occurs when water penetrates the material and occupies the free volume.…”

Section: Mechanism Of Hydrothermal Agingmentioning

confidence: 99%

A review of the effect of hydrothermal aging on the mechanical properties of 2D fiber‐reinforced resin matrix composites

Li,

Feng,

Zhang

et al. 2024

Polymers for Advanced Techs

View full text Add to dashboard Cite

Abstract2D fiber reinforced resin matrix composites (2D FRRMC) are widely applied for aerospace, generator blades, and other high‐end equipment manufacturing fields due to their excellent mechanical properties. However, 2D FRRMC will face a variety of complex environments in the service process, and the long‐term complex environment will significantly impact the physical and mechanical properties of 2D FRRMC. It is necessary to understand and analyze the changes of materials during service. A comprehensive review of the research on the effect of hydrothermal aging on the mechanical properties and re‐ drying of 2D FRRMC in recent years was presented in this article, which contains interlaminar shear properties, compression properties, tensile properties, and aging mechanism, etc. Finally, the current challenges and prospects of 2D FRRMC were discussed. These discussions and proposed strategies will enlighten thoughts and offer ways to apply 2D FRRMC in complex environments better, study 2D FRRMC in complex environments, and study the effects of hydrothermal aging on materials in the future.

show abstract

Advances in 3D printing for polymer composites: A review

Ma,

Zhang,

Ruan

et al. 2024

InfoMat

View full text Add to dashboard Cite

The potential of three‐dimensional (3D) printing technology in the fabrication of advanced polymer composites is becoming increasingly evident. This review discusses the latest research developments and applications of 3D printing in polymer composites. First, it focuses on the optimization of 3D printing technology, that is, by upgrading the equipment or components or adjusting the printing parameters, to make them more adaptable to the processing characteristics of polymer composites and to improve the comprehensive performance of the products. Second, it focuses on the 3D printable novel consumables for polymer composites, which mainly include the new printing filaments, printing inks, photosensitive resins, and printing powders, introducing the unique properties of the new consumables and different ways to apply them to 3D printing. Finally, the applications of 3D printing technology in the preparation of functional polymer composites (such as thermal conductivity, electromagnetic interference shielding, biomedicine, self‐healing, and environmental responsiveness) are explored, with a focus on the distribution of the functional fillers and the influence of the topological shapes on the properties and functional characteristics of the 3D printed products. The aim of this review is to deepen the understanding of the convergence between 3D printing technology and polymer composites and to anticipate future trends and applications.image

show abstract

Insights into the effects of epoxy resin infiltration on powder aging issue induced by powder recycling in powder bed fusion of Nylon12 materials

Cited by 12 publications

References 44 publications

Recovery of residual polyamide (PA12) from polymer powder bed fusion additive manufacturing process through a binder jetting process

Recovery of residual polyamide (PA12) from polymer powder bed fusion additive manufacturing process through a binder jetting process

A review of the effect of hydrothermal aging on the mechanical properties of 2D fiber‐reinforced resin matrix composites

Advances in 3D printing for polymer composites: A review

Contact Info

Product

Resources

About