Surface modification of oriented glass fibers for improving the mechanical properties and flame retardancy of polyamide 12 composites printed by powder bed fusion

Hou, Yanbei; Gao, Ming; An, Ran; Tey, Wei Shian; Li, Boyuan; Chen, Jiayao; Zhao, Lihua; Zhou, Kun

doi:10.1016/j.addma.2022.103195

Cited by 6 publications

(3 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4 The powder's recyclability is a significant superiority of this AM method. 5 PA12 is a recyclable thermoplastic, which has a wide range processing window, low density, semi-crystalline structure, excellent impact and mechanical strength, high ductility, as well as significant abrasion, fatigue, and creep resistance and surface slip properties. [6][7][8][9] Friction, wear resistance, lubricants, and lubrication regime are essential in determining the tribological behavior of the parts' sliding surfaces and the design stage for the engineering applications.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of build orientation on the green tribological properties of multi-jet fusion manufactured PA12 parts

Gavcar,

Sumer,

Sagbas

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part J:

View full text Add to dashboard Cite

Additive manufacturing (AM) is a newly developed technology for manufacturing parts from three-dimensional (3D) computer-aided design (CAD) models by depositing a material layer on layer. Multi-jet fusion (MJF) is one of the AM technologies that can be used for manufacturing functional parts like gear, linear, bearing, etc., by polymers. In various applications, technical processes, design of tribological systems, optimum lubrication, and reduction of wear and friction are significant performance criteria to provide energy and material conservation. The development of green tribological applications offers essential solutions to problems of ecosystem pollution and energy from a global point of view to increase sustainability. In this article, the green tribological behavior of Polyamide 12 (PA12) parts, manufactured by MJF with different build orientations was evaluated by ball-on-disc tribological tests under different normal loads and lubricated environments. Mechanical profilometer and digital microscope were used to evaluate surface quality and morphology. Scanning electron microscope (SEM) was used to determine the samples’ wear characteristics. The maximum surface roughness was measured for the part having a build orientation of 45°. The maximum coefficient of friction value was determined as 0.355 for the sample with 45° orientation under 5 N load and dry environment. The maximum wear rate value was determined as 2.3249 × 10−4 mm3/Nmm for the sample with 0° orientation under 10 N load and dry state. The differences between build orientations should be considered when evaluating tribological properties. This article provides a new perspective to researchers and practitioners toward green tribology of polymer AM parts.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of build orientation on the green tribological properties of multi-jet fusion manufactured PA12 parts

Gavcar,

Sumer,

Sagbas

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part J:

View full text Add to dashboard Cite

show abstract

“…[ 5 ] Many kinds of premixed composite powders with reinforcements such as glass fibers, carbon fibers, and aramid fibers have been developed for PBF. [ 6 ] The alignment of the fibers generated by the moving roller along the recoating direction induces the increase in strength and modulus of the fiber‐reinforced composites, but inevitably causes an increase in brittleness and anisotropy. [ 7 ] Mechanical properties of the parts in directions other than the fiber alignment direction are poor, particularly in the building direction due to insufficient interlayer adhesion.…”

Section: Introductionmentioning

confidence: 99%

In Situ Filler Addition for Homogeneous Dispersion of Carbon Nanotubes in Multi Jet Fusion–Printed Elastomer Composites

Chen

Tey

et al. 2023

Advanced Science

Self Cite

View full text Add to dashboard Cite

The dispersibility of fillers determines their effect on the mechanical properties and anisotropy of the 3D‐printed polymeric composites. Nanoscale fillers have the tendency to aggregate, resulting in the deterioration of part performance. An in situ filler addition method using the newly developed dual‐functional toughness agents (TAs) is proposed in this work for the homogeneous dispersion of carbon nanotubes (CNTs) in elastomer composites printed via multi jet fusion. The CNTs added in the TAs serve as an infrared absorbing colorant for selective powder fusion, as well as the strengthening and toughening fillers. The printability of the TA is theoretically deduced based on the measured physical properties, which are subsequently verified experimentally. The printing parameters and agent formulation are optimized to maximize the mechanical performance of the printed parts. The printed elastomer parts show significant improvement in strength and toughness for all printing orientations and alleviation of the mechanical anisotropy originating from the layer‐wise fabrication manner. This in situ filler addition method using tailorable TAs is applicable for fabricating parts with site‐specific mechanical properties and is promising in assisting the scalable manufacturing of 3D‐printed elastomers.

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

Surface modification of oriented glass fibers for improving the mechanical properties and flame retardancy of polyamide 12 composites printed by powder bed fusion

Cited by 6 publications

References 40 publications

Effect of build orientation on the green tribological properties of multi-jet fusion manufactured PA12 parts

Effect of build orientation on the green tribological properties of multi-jet fusion manufactured PA12 parts

In Situ Filler Addition for Homogeneous Dispersion of Carbon Nanotubes in Multi Jet Fusion–Printed Elastomer Composites

Advances in 3D printing for polymer composites: A review

Contact Info

Product

Resources

About