Effect of Sintering Parameters and Flow Agent on the Mechanical Properties of High Speed Sintered Elastomer

Norazman, Farhana; Hopkinson, Neil

doi:10.1115/1.4028482

Cited by 9 publications

(6 citation statements)

References 4 publications

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“…TPE 210‐S parts are widely used in the production of interior automotive applications. In 2015, Norazman et al [ 171 ] studied the influence of the addition of a silica flow agent on the tensile properties of HSS processed TPE parts. The results show that compared with the reported elongation‐at‐break value of LS variant of the same TPE, HSS shows an increase of more than two times.…”

Section: Powder‐based Methodsmentioning

confidence: 99%

Powder‐Based Additive Manufacturing: A Critical Review of Materials, Methods, Opportunities, and Challenges

Shanthar,

Chen,

Abeykoon

2023

Adv Eng Mater

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As a 0‐dimensional moulding material, powder particles can realise the construction of most engineering parts and can further improve the precision moulding and high‐performance manufacturing capabilities of additive manufacturing (AM). Therefore, the powder‐based additive manufacturing methods provide an outstanding practical value and development for modern manufacturing world. However, powder materials that are utilised in additive manufacturing continue to face challenges such as a lack of accessible categories, temperature restrictions, and poor performance of moulded components. Therefore, researching for new additive manufacturing materials and procedures has become one of the important and influential ways to accelerate the progress of additive manufacturing technology and also to expand its application fields. For this purpose, it is invaluable to understand and update on the current state‐of‐the‐art of powder‐based additive manufacturing technologies. Hence, this work first reviews the research background of powder‐based 3D printing in details while systematically expounding on the technologies and equipment, material types, influencing factors, existing problems and development trends of powder‐based 3D printing. In addition, the basic principles of powder‐based 3D printing were also revealed, and the formation and optimization of metal, polymer, and ceramic powders in powder‐based 3D printing equipment were explored. Throughout the last decade, powder‐based AM has gradually emerged in the fields of biomedical and aerospace, such as the construction of tissue scaffolds and the construction of aero‐engine parts, respectively. However, powder materials may have insufficient comprehensive performance due some limitations, as the control of mechanical characteristics and dimensional accuracy of powder moulded parts are still challenging during manufacturing processes. Therefore, exploring the mechanism/s of additive manufacturing of powder‐based materials, improving the mechanical properties of powder‐based AM products, and the possible directions for improving the usability of powder materials are the main focus of this paper.This article is protected by copyright. All rights reserved.

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Section: Powder‐based Methodsmentioning

confidence: 99%

Powder‐Based Additive Manufacturing: A Critical Review of Materials, Methods, Opportunities, and Challenges

Shanthar,

Chen,

Abeykoon

2023

Adv Eng Mater

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“…Tensile test specimens were manufactured in the VX 200 HSS in accordance with the ISO 7823-3:2007 standards. 23 The samples were fabricated parallel to the powder bed in the XY plane as shown in Figure 2.…”

Section: Materials Processing In Hss Devicementioning

confidence: 99%

“…Polymeric powders have a tendency of forming agglomerates which increases the difficulty in spreading the powder prior to the sintering process. 23 It was observed that the addition of fumigated silica (CAB-O-SIL) at a 0.2% by weight proportion to poly(methyl methacrylate) (PMMA) led to de-agglomeration and an improvement in the mechanical properties such as UTS and elasticity modulus, while decreasing the EaB. Further addition of CAB-O-SIL led to regression in the improvements made.…”

Section: Introductionmentioning

confidence: 99%

Fabricating poly(methyl methacrylate) parts using high-speed sintering

Bharaj

Paul

Mumtaz

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part B:

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The ability of high-speed sintering to fabricate fully functional polymer parts at higher production rates as compared to other alternative additive manufacturing processes makes it prudent to further investigate its capability in processing different materials. The preferential deposition of a radiation absorbing material, which is often presented in the form of a liquid ink, on the powder bed can be considered the highlight of this technology. The effect of ‘print density’, that is, the amount of ink which is deposited, on the mechanical properties of parts made of an amorphous polymer, poly(methyl methacrylate), was investigated along with its potential role in controlling the porosity and partial melting. The ultimate tensile strength was measured and compared to other additive manufacturing technologies such as laser sintering and was found to be comparable, possibly due to the gradual supply of heat from the infrared lamp which allowed the amorphous poly(methyl methacrylate) particles to melt and have proper bonding with neighbouring particles as compared to the fast lasing action in laser sintering, where the sudden introduction and the withdrawal of the heat source (laser) led to poor inter-particle bonding.

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“…The tensile properties achieved by high speed sintering TPE210-S parts have been shown to be superior to equivalent laser sintered parts and exceed the values specified by the manufacturer. Norazman and Hopkinson (2014) investigated the addition of fumed silica to the powder mix, which further improved the tensile strength, Young's modulus and elongation at break of manufactured TPE210-S parts. Ellis et al (2015a) explored the application of greyscale to produce elastomeric parts with comparable tensile properties.…”

Section: Additive Manufactured Elastomersmentioning

confidence: 99%

Smoother and stronger high speed sintered elastomers through surface modification process

et al. 2017

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For the last twelve years, his research has been primarily concerned with applied inkjet printing. His group at Sheffield undertakes funded research into reactive inkjet printing, controlled crystallisation and polymer printing. Other research interests are involved with drying behaviour, inkjet used in tissue engineering, printed electronics and additive manufacture.Adam Ellis received his Masters (2007) and PhD in Chemistry (2011) from the University of Sheffield. He was then an EPSRC doctoral prize fellow before moving to the Department of Mechanical Engineering to join the Centre for Advanced Additive Manufacturing at the University of Sheffield in 2012. Adam worked as a post-doctoral research associate until 2016 when he joined Xaar as project manager for 3D Services.

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Effect of Sintering Parameters and Flow Agent on the Mechanical Properties of High Speed Sintered Elastomer

Cited by 9 publications

References 4 publications

Powder‐Based Additive Manufacturing: A Critical Review of Materials, Methods, Opportunities, and Challenges

Powder‐Based Additive Manufacturing: A Critical Review of Materials, Methods, Opportunities, and Challenges

Fabricating poly(methyl methacrylate) parts using high-speed sintering

Smoother and stronger high speed sintered elastomers through surface modification process

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