3D printing of thermoplastic PI and interlayer bonding evaluation

Wu, Wenzheng; Ye, Wenli; Geng, Peng; Wang, Yulei; Hu, Xue; Zhao, Ji

doi:10.1016/j.matlet.2018.07.020

Cited by 36 publications

(22 citation statements)

References 4 publications

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“…The IPS provides an additional energy source that increases the thermal energy of the polymer surface. The higher temperature of the interlayer contact zone leads to an increased movement of polymer chains and thus to a higher interlayer bonding performance [23]. The quasi-static and cyclic experiments in this study show the same tendency.…”

Section: Fffsupporting

confidence: 72%

Optimization and Quality Evaluation of the Interlayer Bonding Performance of Additively Manufactured Polymer Structures

et al. 2020

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The application of additive manufacturing changes from prototypes to series production. In order to fulfill all requirements of series production, the process and the material characteristics must be known. The machine operator of additive manufacturing systems is both a component and a material producer. Nevertheless, there is no standardized procedure for the manufacturing or testing of such materials. This includes the high degree of anisotropy of additively manufactured polymers via material extrusion. The interlayer bonding performance between two layers in the manufacturing direction z is the obvious weakness that needs to be improved. By optimizing this interlayer contact zone, the overall performance of the additively manufactured polymer is increased. This was achieved by process modification with an infrared preheating system (IPS) to keep the temperature of the interlayer contact zone above the glass transition temperature during the manufacturing process. Combining destructive and non-destructive testing methods, the process modification IPS was determined and evaluated by a systematic approach for characterizing the interlayer bonding performance. Thereby, tensile tests under quasi-static and cyclic loading were carried out on short carbon fiber-reinforced polyamide (SCFRP). In addition, micro-computed tomography and microscopic investigations were used to determine the process quality. The IPS increases the ultimate interlayer tensile strength by approx. 15% and shows a tendency to significantly improved the fatigue properties. Simultaneously, the analysis of the micro-computed tomography data shows a homogenization of the void distribution by using the IPS.

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Section: Fffsupporting

confidence: 72%

Optimization and Quality Evaluation of the Interlayer Bonding Performance of Additively Manufactured Polymer Structures

et al. 2020

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“…The research with TPI (thermoplastic polyimide) material shows that nozzle temperature makes significant change in interlayer bonding. When it was at 335 ∘ C the interlayer bonding force was 334.5 N and if it was adjusted at 340 ∘ C the interlayer bonding force would be 260.5 N. This research suggested that it has to find a suitable temperature for the different materials [21].…”

Section: Introductionmentioning

confidence: 91%

The effect of nozzle hole diameter of 3D printing on porosity and tensile strength parts using polylactic acid material

et al. 2020

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Nozzle hole diameter of 3D printer (3DP) can be varied to obtain required product quality as well as to reduce manufacturing times. The use of larger diameter may accelerate manufacturing times of products, yet the product quality, including the mechanical properties, still needs to be investigated profoundly. The purpose of this work is to investigate experimentally the effect of nozzle hole diameter of 3DP to the surface quality, accuracy, and the strength of the product. The specimens were manufactured by fused deposition modelling (FDM) 3D printing using polylactic acid (PLA) as the filaments.Bed temperature, extruder temperature and printing speed were set to be 60∘C, 200∘C and 80 mm/s respectively. The thickness of each layer was set at the ratio of 20% to the nozzle hole diameter. Infill pattern was determined by using line type of 100%. Nozzle hole diameter of 0.3, 0.4, 0.5 and 0.6mmwas compared in thiswork. The results show that bigger nozzle hole diameter enhanced the density and tensile strength of the products thought it was not linearly correlation.

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“…For better results in the mechanical strength of FDM printed functional prototypes, some studies have suggested these parameters and levels for preparations of 3D printed parts. 24–28…”

Section: Experimentationmentioning

confidence: 99%

“…23,24 Bonding force between layers is effected by the printing temperature. 25 In the case of surface finish and mechanical properties of prototyped parts, role of nozzle conditions are very important. 26,27 Also, it is reported that the direction of printing affects the microstructure and mechanical properties of specimens.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and morphological investigations of 3D printed recycled ABS reinforced with bakelite–SiC–Al₂O₃

Singh

Kumar

2019

Proceedings of the Institution of Mechanical Engineers, Part C:

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The utilization of thermosetting waste is a serious issue as it is not recycled commercially due to inherent molecular properties and high technology cost. This research details the study of the mechanical behavior and surface analysis with energy-dispersive X-ray spectroscopy and scanning electron microscope of three-dimensional printed parts of the waste thermosetting polymer, bakelite (BAK) as the reinforcement along with ceramic particles (SiC and Al2O3) in recycled thermoplastic acrylonitrile butadiene styrene matrix for sustainability. The process involves twin-screw extrusion for the preparation of filament, followed by 3D printing of functional prototypes on fused deposition modeling setup. The 3D printed parts prepared with fused deposition modeling were used for the testing of mechanical, thermal, and morphological properties. The results of the present study suggests that for commercial applications recycling of thermoplastic up to 10 wt% can be easily performed without a change in any hardware/ software configuration of the fused deposition modeling setup and the ceramic concentration in thermoplastic-thermosetting blends further led to better mechanical and surface properties.

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3D printing of thermoplastic PI and interlayer bonding evaluation

Cited by 36 publications

References 4 publications

Optimization and Quality Evaluation of the Interlayer Bonding Performance of Additively Manufactured Polymer Structures

Optimization and Quality Evaluation of the Interlayer Bonding Performance of Additively Manufactured Polymer Structures

The effect of nozzle hole diameter of 3D printing on porosity and tensile strength parts using polylactic acid material

Mechanical and morphological investigations of 3D printed recycled ABS reinforced with bakelite–SiC–Al₂O₃

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3D printing of thermoplastic PI and interlayer bonding evaluation

Cited by 36 publications

References 4 publications

Optimization and Quality Evaluation of the Interlayer Bonding Performance of Additively Manufactured Polymer Structures

Optimization and Quality Evaluation of the Interlayer Bonding Performance of Additively Manufactured Polymer Structures

The effect of nozzle hole diameter of 3D printing on porosity and tensile strength parts using polylactic acid material

Mechanical and morphological investigations of 3D printed recycled ABS reinforced with bakelite–SiC–Al2O3

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Product

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Mechanical and morphological investigations of 3D printed recycled ABS reinforced with bakelite–SiC–Al₂O₃