Sintering quality and parameters optimization of sisal fiber/PES composite fabricated by selective laser sintering (SLS)

Idriss, Aboubaker I. B.; Li, Jian; Guo, Yanling; Wang, Yangwei; Li, Xingdong; Zhang, Zhiqiang; Elfaki, Elkhawad Ali

doi:10.1177/0892705720939179

Cited by 19 publications

(10 citation statements)

References 14 publications

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“…Polyether sulfone (PES) resin is an important commercial LS material because of its excellent fluidity, good melting adhesion, low forming shrinkage, nontoxicity, and nonpolluting properties. 12,13 However, as a type of polymer powder, PES powders exhibit a relatively low absorption rate for infrared laser and cannot be sintered by an infrared laser at a low power of 20 W. Carbon black (CB) is an excellent near-infrared laser absorbing dye with good coloring ability, high thermal conductivity, low price, and stable performance. [14][15][16] Herein, to manufacture low-cost, miniaturized LS equipment, LS processing with a fiber laser at a wavelength of 1064 nm was performed on PES/CB powders without any heating conditions.…”

Section: Introductionmentioning

confidence: 99%

Laser sintering of polyether sulfone/carbon black composite powders using near-infrared laser

Meng

Yanling

et al. 2023

Journal of Thermoplastic Composite Materials

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Low-cost miniaturized laser sintering equipment remains lacking at present; therefore, the development of laser sintering technology and its widespread applications are significantly hindered. Traditional laser sintering equipment is composed of a carbon dioxide laser, water cooling system, powder-box-heating device, and thermal insulation device. Such requirements are the main factors limiting the miniaturization and economic efficiency of laser sintering equipment. Herein, a laser-sintered material was fabricated by sintering using a near-infrared laser light source with a wavelength of 1064 nm without heating, and its microstructure and properties were systematically studied. Polyether sulfone (PES) and carbon black (CB) powders were selected as the raw materials for preparing PES/CB composites by mechanical mixing. For synthesizing the PES/CB composite powders, the CB powder content was varied within the range of 0.25%–1.5%. The PES/CB powders with different component ratios were subjected to laser sintering treatment, and the corresponding microstructural evolutions of the sintered parts were analyzed. The effects of different component ratios on the mechanical properties and dimensional accuracy of the sintered part were investigated, and the optimal content of CB powders of the PES/CB composite material was determined. Additionally, the effects of laser power (10–18 W), scanning speed (1200–1600 mm/s), and scanning spacing (0.04–0.08 mm) on the forming quality of the sintered parts of the PES/CB composite powders were evaluated. The processing parameters of the laser sintering of PES/CB composite powders were explored using orthogonal experimental tests and optimized using the comprehensive weighted method.

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Section: Introductionmentioning

confidence: 99%

Laser sintering of polyether sulfone/carbon black composite powders using near-infrared laser

Meng

Yanling

et al. 2023

Journal of Thermoplastic Composite Materials

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“…The range of applications of biomass SLS materials is presently limited due to the poor quality of the produced biomass composites. It is necessary to optimize the mixing ratio of the raw materials of the powder composite, the particle size of the powder materials and the SLS processing parameters to produce high-quality sintered parts with high mechanical strengths and dimensional accuracy (Idriss et al, 2020b(Idriss et al, , 2020a. The sintering quality of the SLS part depends not only on the mechanism of the interaction between the biomass composite powder and the laser beam but also on the SLS processing parameters (Idriss et al, 2020a).…”

Section: Introductionmentioning

confidence: 99%

“…It is necessary to optimize the mixing ratio of the raw materials of the powder composite, the particle size of the powder materials and the SLS processing parameters to produce high-quality sintered parts with high mechanical strengths and dimensional accuracy (Idriss et al, 2020b(Idriss et al, , 2020a. The sintering quality of the SLS part depends not only on the mechanism of the interaction between the biomass composite powder and the laser beam but also on the SLS processing parameters (Idriss et al, 2020a). Prosopis chilensis wood powder is a sustainable material that is produced from renewable forestry waste and found throughout Sudan.…”

Section: Introductionmentioning

confidence: 99%

Effects of various processing parameters on the mechanical properties and dimensional accuracies of Prosopis chilensis/PES composites produced by SLS

Bolad

Guo

et al. 2022

RPJ

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Purpose The range of applications of the currently available biomass selective laser sintering (SLS) parts is limited and low-quality. This study aims to demonstrate the effects of the various processing parameters on the dimensional accuracy, bending strength, tensile strength, density and impact strength of the Prosopis chilensis/polyethersulfone (PES) composites (PCPCs) that were produced by SLS. The various processing parameters are laser power, scan speed, preheating temperature, scan spacing and layer thickness. In addition, the authors’ studied the effects of PCP particle size on the mechanical properties of the PCPCs. Design/methodology/approach The PCPC specimens were printed using an AFS SLS machine (additive manufacturing). The bending, tensile and impact strengths of the specimens were measured using a universal tensile tester. The dimensional accuracy of the bending specimens was determined by a Vernier caliper. The formability of the PCPC at various mixing ratios of the raw materials was earlier investigated by single-layer sintering experiments (Idriss et al., 2020b). The microstructure and particle distribution of the various PCPC specimens were analyzed by scanning electron microscopy (SEM). Findings The mechanical strengths (bending, tensile and impact strengths and density) and the dimensional accuracy of the PCPC SLS parts were directly and inversely proportional, respectively, to the laser power and preheating temperature. Furthermore, the mechanical strengths and dimensional accuracy of the PCPC SLS parts were inversely and directly proportional, respectively, to the scanning speed, scan spacing and layer thickness. Practical implications PCPC is an inexpensive, energy-efficient material that can address the drawbacks of the existing SLS parts. It is also eco-friendly because it lowers the pollution and CO2 emissions that are associated with waste disposal and SLS, respectively. The optimization of the processing parameters of SLS in this study produced high-quality PCPC parts with high mechanical strengths and dimensional accuracy that could be used for the manufacture of the roof and wooden floors, construction components and furniture manufacturing. Originality/value To the best of the authors’ knowledge, this study is among the first to elucidate the impact of the various SLS processing parameters on the mechanical properties and dimensional accuracy of the sintered parts. Furthermore, novel PCPC parts were produced in this study by SLS.

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“…11 At present, there are many researchers investigated the composites materials for SLS. 12,13 However, a fewer studies in investment casting using biomass material via SLS to manufacture patterns. Through previous studies results, some of new materials have good performance in dimensional accuracy and mechanical strength.…”

Section: Introductionmentioning

confidence: 99%

Study on selective laser sintering process and investment casting of rice husk/ Co-Polyamide (Co-PA hotmelt adhesive) composite

Guo

Shuhui

et al. 2022

Journal of Thermoplastic Composite Materials

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The current available wood-plastic materials used for selective laser sintering (SLS) investment casting are often poor in fluidity in molten state, which is not easy to flow out the shell mold. This led to a large amount of residual ash in mold after heating and lowered the quality of the sintered parts. In this article, the Co-Polyamide (Co-PA Hotmelt adhesive) and rice husk powders (RH) were proposed as the feedstock of the rice husk (RH)/CO-PA composite (RHPA) for SLS. CO-PA with good fluidity was used as the matrix and RH powder as the additive materials. This paper aims to optimize the SLS processing parameters and determine the optimal ratio of RHPA parts manufactured by SLS. Through this work, an orthogonal experimental method of five factors and four levels was used to determine the optimum SLS parameters for the RHPA SLS test. The scan spacing, scan speed, laser power, layer thickness, and preheating temperature are chosen as main SLS affecting factors of this study. The synthesis weighted scoring methods were used to conclude the optimal combination of SLS parameters of RHPA i.e., scan spacing = 0.15mm, scan speed = 2m/s, laser power =16W, layer thickness = 0.25 mm and the preheating temperature = 74°C. Moreover, the influence of RH content on the mechanical properties, dimensional accuracy, and the residual ash content of RHPA parts was determined. When the ratio of RH powder on RHPA is 10 wt %, the bending strength of the sintered parts will reach 2 MPa. Besides, the residual ash content of RHPA parts after heating step was lower (1.1881%) and the tolerance level is CT5. Thus, the dimensional accuracy in X, Y, and Z directions of 10 wt % RHPA SLS parts is 99.79%, 98.71%, and 97.9%, respectively; and the surface of casting was smooth and clear details.

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Sintering quality and parameters optimization of sisal fiber/PES composite fabricated by selective laser sintering (SLS)

Cited by 19 publications

References 14 publications

Laser sintering of polyether sulfone/carbon black composite powders using near-infrared laser

Laser sintering of polyether sulfone/carbon black composite powders using near-infrared laser

Effects of various processing parameters on the mechanical properties and dimensional accuracies of Prosopis chilensis/PES composites produced by SLS

Study on selective laser sintering process and investment casting of rice husk/ Co-Polyamide (Co-PA hotmelt adhesive) composite

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