Selective laser sintering (SLS)-printable thermosetting resins via controlled conversion

Campbell, Christopher G.; Astorga, Dominik Jordon; Martinez, Estevan; Celina, Mathias C.

doi:10.1557/s43579-020-00009-5

Cited by 11 publications

(4 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[18] Although a few studies are reporting the selective laser sintering (SHS) of thermosetting composite, the materials were mostly printed by DIW and then cured for hours by infrared laser. [11,47] Therefore, the truly efficient in-situ curing methods for thermosetting polymers are limited to (1) microwave thermal, (2) photothermal, and (3) laser thermal curing methods.…”

Section: Electromagnetic Heating Based In-situ Curing and Diw Of Ther...mentioning

confidence: 99%

“…There are many additive manufacturing methods available for printing thermosets, such as stereolithography (SLA), digital light processing (DLP), continuous liquid interface production (CLIP), filament fused fabrication (FFF), selective laser sintering, and direct-ink-writing (DIW). [2,8,[10][11][12] Among these approaches, DIW also referred to as robocasting, is an extrusion-based 3D printing technology and provides a high-efficiency way for material printing due to its low cost and versatile capability. DIW has succeeded in printing metals, ceramics, polymers, and even bioactive materials.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

In‐situ curing of3Dprinted freestanding thermosets

Gao

Qiu

Wang

2022

J Adv Manuf & Process

View full text Add to dashboard Cite

Direct‐ink‐writing (DIW) provides a high‐efficiency way for thermoset printing while rapid in‐situ curing has a significant role in manufacturing rate, quality, performance, and flexibility. In this review, in‐situ curing methods that can be integrated into DIW were discussed, including frontal polymerization, electromagnetic heating, photochemistry, electron beam, and resistance heating curing. The in‐situ process monitoring and curing kinetic analysis technologies such as differential scanning calorimetry (DSC), Raman spectroscopy, Fourier transform infrared spectroscopy (FT‐IR), broadband dielectric spectroscopy (BDS), ultrasonic dynamic mechanical analysis (UDMA), fluorescence spectroscopy, were briefly presented. The working mechanism and features of these characterization measurements are studied. Furthermore, machine learning and other artificial intelligence tools used for the optimization of printing materials, topology design, printing path, and defect detection sensitivity are reviewed. Finally, some future research directions for the DIW and in‐situ curing of thermosets are addressed.

show abstract

Section: Electromagnetic Heating Based In-situ Curing and Diw Of Ther...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

In‐situ curing of3Dprinted freestanding thermosets

Gao

Qiu

Wang

2022

J Adv Manuf & Process

View full text Add to dashboard Cite

show abstract

“…Some examples show mixtures of aluminum powder and nylon suitable for molds, mixtures of carbon fiber and nylon with extremely lightweight and strong mechanical properties, and a variety of mixed plastic materials and ceramic materials. In theory, any fusible powder can be used to make products or models, so the choice of powder material is one of the main advantages of SLS technology [79][80][81][82][83][84]. In previously reported work, nanocomposite powders for SLS were mixed in a solid-state shear milling reactor for pretreatment, which provides a strong shear force and improves the effects of pulverization, dispersion, and combination [85].…”

Section: Slsmentioning

confidence: 99%

Recent progress in 3D printing piezoelectric materials for biomedical applications

Zeng¹,

Jiang²,

He³

et al. 2021

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

Three-dimensional (3D) printing technology has attracted significant attention for fabricating piezoelectric materials due to its high efficiency and capability to produce complex structures. Motivated by the desire to address limitations in conventional methods for fabricating piezoelectric materials, this review first introduces commonly used 3D-printing technologies to fabricate piezoelectric materials. The advantages of the technologies are evaluated. Subsequently, typical piezoelectric materials produced by 3D-printing methods are specifically discussed. The properties of the printed materials, such as dielectric and piezoelectric properties, are presented. Significant applications of 3D-printed piezoelectric materials are further explored, highlighting the potential of fabricating 3D-printed piezoelectric materials for biomedical applications. Finally, future directions and opportunities for 3D-printed piezoelectric materials are highlighted.

show abstract

“…At present, L-PBF technology is developing rapidly. It is mainly used in new product research and development; art manufacturing; micro-machinery research and development; and the rapid manufacturing of medical equipment, metal parts, and molds [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Epoxy Resin on the Infiltration of Porous Metal Parts Formed through Laser Powder Bed Fusion

Chen,

Liu,

She

et al. 2024

J. Compos. Sci.

View full text Add to dashboard Cite

Laser powder bed fusion (L-PBF) additive manufacturing technology can print multi-material parts with multiple functions/properties, and has great potential for working in harsh application environments. However, the metal blank formed by sintering metal powder material with binder added through L-PBF has an obvious porous structure and insufficient mechanical properties, and few studies have been conducted studying this. In this paper, epoxy resin was used to impregnate the blank of porous metal parts formed by L-PBF with iron-based powder material at a certain temperature, and a cross-linked curing reaction was carried out with three kinds of phenolic resin in different proportions under the action of a curing agent, so as to fill the pores and achieve the desired mechanical properties. The characteristic peaks of each group of epoxy resin were characterized using Fourier transform infrared spectroscopy (FT-IR) and H-nuclear magnetic resonance (1H-NMR) spectrums. The microstructure, decomposition temperature, and residue of four epoxy resin dispersion systems were analyzed with a scanning electron microscope (SEM), a thermal gravimetric analyzer (TGA), and derivative thermogravimetry (DTG). The results show that the density of the porous metal parts was obviously improved, the heat resistance temperature of the parts could reach 350 °C, and the tensile strength of the sample after EP2-1 impregnation was increased by 4–6 times after curing at 160 °C for 6 h. Therefore, the use of an epoxy resin dispersion system can increase the porosity of L-PBF porous metal parts, but can also significantly improve their mechanical properties, which can help them to meet the requirements of applications as model materials, biological materials, and functional materials to provide a feasible solution.

show abstract

Selective laser sintering (SLS)-printable thermosetting resins via controlled conversion

Cited by 11 publications

References 17 publications

In‐situ curing of3Dprinted freestanding thermosets

In‐situ curing of3Dprinted freestanding thermosets

Recent progress in 3D printing piezoelectric materials for biomedical applications

The Effect of Epoxy Resin on the Infiltration of Porous Metal Parts Formed through Laser Powder Bed Fusion

Contact Info

Product

Resources

About