Preparation and laser sintering of limestone PA 12 composite

Guo, Yanling; Jiang, Kaiyi; Bourell, David L.

doi:10.1016/j.polymertesting.2014.06.002

Cited by 26 publications

(20 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The most important influence can be attributed to the variable thermal properties as well as particle size of the polymer/composite powder [ 17 ]. Y. Guo et al introduced the concept of reducing the manufacturing and material costs, as well as improving energy efficiency, by blending the polymer matrix with an environmentally friendly filler material, such as calcium carbonate [ 18 ]. This also addresses the environmental issue and high energy consumption, derived with selective laser sintering [ 19 , 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of the Surface Modification of Calcium Carbonate on Polyamide 12 Composites

et al. 2020

View full text Add to dashboard Cite

In previous investigations, it was found that the thermal properties of a polyamide 12 compound can be manipulated, using a designed filler, to improve the melting as well as crystallization behavior, determined for selective laser sintering. A common downside of the introduction of a non-flexing mineral filler is the reduction of the mechanical properties, such as ductility. This paper investigates the influence of content and surface modification of limestone on the mechanical properties. The aim is to understand the effect of an optimized coupling agent on the properties of a compound, containing polyamide 12 filled with 10 wt % of surface modified calcium carbonate. A range of four mineral filler modifications was chosen to investigate their coupling effect, namely 6-amino hexanoic acid, ε-caprolactam, l-arginine or glutamic acid. The in advance surface modified fillers were then each used in combination with the polyamide 12 in a twin-screw extrusion process. With an optimized surface modifying agent, the tensile strength as well as elongation at break can be improved in comparison with uncoated filler implementation, such that up to 60% of the loss of ductility and toughness of a final part when using an untreated filler could be regained using an optimized surface modifier at a correct amount. With the tested filler grade and the specific tested filler amount, the optimized amount of 6-amino hexanoic acid was approx. 2.5 mmol of treatment agent per 100 m2 of CaCO3. These found improvements in a twin-screw extruded polyamide 12 compound show the possible usage of modified calcium carbonate as a functional filler in additive manufacturing and can potentially be transferred in a subsequent investigation in the selective laser sintering process.

show abstract

Section: Introductionmentioning

confidence: 99%

Influence of the Surface Modification of Calcium Carbonate on Polyamide 12 Composites

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Selective laser sintering (SLS) is a three-dimensional (3D) additive manufacturing (AM) technology that was first proposed by Deckard in 1988 [1][2][3][4][5]. The technique involves the use of a laser beam to directly fuse a powdered raw material over a large area, where successive layers are deposited based on a three-dimensional stereolithography (STL)-formatted computer-aided design (CAD) model developed without expensive equipment [6,7].…”

Section: Introductionmentioning

confidence: 99%

Selective Laser Sintering (SLS) and Post-Processing of Prosopis Chilensis/Polyethersulfone Composite (PCPC)

Idriss

Wang

et al. 2020

Materials

Self Cite

View full text Add to dashboard Cite

The range of selective laser sintering (SLS) materials is currently limited, and the available materials are often of high cost. Moreover, the mechanical strength of wood–plastic SLS parts is low, which restricts the application of a SLS technology. A new composite material has been proposed to address these issues, while simultaneously valorizing agricultural and forestry waste. This composite presents several advantages, including reduced pollution associated with waste disposal and reduced CO2 emission with the SLS process in addition to good mechanical strength. In this article, a novel and low-cost Prosopis chilensis/polyethersulfone composite (PCPC) was used as a primary material for SLS. The formability of PCPC with various raw material ratios was investigated via single-layer experiments, while the mechanical properties and dimensional accuracy of the parts produced using the various PCPC ratios were evaluated. Further, the microstructure and particle distribution in the PCPC pieces were examined using scanning electron microscopy. The result showed that the SLS part produced via 10/90 (wt/wt) PCPC exhibited the best mechanical strength and forming quality compared to other ratios and pure polyethersulfone (PES), where bending and tensile strengths of 10.78 and 4.94 MPa were measured. To improve the mechanical strength, post-processing infiltration was used and the PCPC-waxed parts were enhanced to 12.38 MPa and 5.73 MPa for bending and tensile strength.

show abstract

“…To further improve the laser sintering process, there is a growing need to research and develop additional materials which can meet the various requirements for different industrial applications (Guo et al 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Many studies have reported success in processing biomass composite via SLS. Guo et al (2014) proposed a novel approach for the use of natural and cheap forestry waste as the feedstock of SLS to reduce the price of a high-cost material. Besides, the use of forestry waste would reduce the environmental impact and increase the scope of material available for SLS.…”

Section: Introductionmentioning

confidence: 99%

Effects of various processing parameters on the mechanical properties of sisal fiber/PES composites produced via selective laser sintering

Idriss

Wang

et al. 2020

BioRes

Self Cite

View full text Add to dashboard Cite

A new type of sustainable material, i.e., a sisal fiber/poly-ether sulfone composite (SFPC), which is energy-efficient, environmentally friendly, and has a low cost, was developed for laser sintering additive manufacturing. This study was performed to explore the effects of the processing parameters on the SFPC composite parts produced via selective laser sintering (SLS). The effects of the laser sintering processing parameters, i.e., the preheating temperature, laser power, and scan speed, were studied. Bending and tensile testing of the SFPC specimens was successfully performed via SLS. The effect of the processing parameters on the SLS in terms of the mechanical strength of the laser-sintered parts was investigated. The results determined that the processing parameters had a significant effect on the mechanical strength of the sintered SFPC parts. When the preheating temperature and laser power were increased in the processing SLS system, the mechanical strength of the sintered SFPC parts was significantly increased. However, the scanning speed had an inverse proportional relationship to the mechanical strength of the SFPC SLS parts.

show abstract

Preparation and laser sintering of limestone PA 12 composite

Cited by 26 publications

References 11 publications

Influence of the Surface Modification of Calcium Carbonate on Polyamide 12 Composites

Influence of the Surface Modification of Calcium Carbonate on Polyamide 12 Composites

Selective Laser Sintering (SLS) and Post-Processing of Prosopis Chilensis/Polyethersulfone Composite (PCPC)

Effects of various processing parameters on the mechanical properties of sisal fiber/PES composites produced via selective laser sintering

Contact Info

Product

Resources

About