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Graphite Modified Polylactide (PLA) for 3D Printed (FDM/FFF) Sliding Elements
- Source :
- Polymers, Volume 12, Issue 6, Polymers, Vol 12, Iss 1250, p 1250 (2020)
- Publication Year :
- 2020
- Publisher :
- Multidisciplinary Digital Publishing Institute, 2020.
-
Abstract
- With the development of 3D printing technology, there is a need to produce printable materials with improved properties, e.g., sliding properties. In this paper, the authors present the possibilities of producing composites based on biodegradable PLA with the addition of graphite. The team created composites with the following graphite weight contents: 1%, 2.5%, 5%, 7.5%, and 10%. Neat material was also subjected to testing. Tribological, mechanical, and chemical properties of the mentioned materials were examined. Measurements were also made after keeping the samples in ageing and climatic ovens. Furthermore, SEM observations of samples before and after friction tests were carried out. It was demonstrated that increasing graphite content caused a significant decrease in wear (PLA + 10% graphite had a wear rate three times lower than for a neat material). The addition of graphite did not adversely affect most of the other properties, but it ought to be noted that mechanical properties changed significantly. After conditioning in a climatic oven PLA + 10% graphite has (in comparison with neat material) 11% lower fracture stress, 47% lower impact strength, and 21% higher Young&rsquo<br />s modulus. It can be certainly stated that the addition of graphite to PLA is a step towards obtaining a material that is low-cost and suitable for printing sliding spare parts.
- Subjects :
- 3d printed
wear
Materials science
Polymers and Plastics
friction
Modulus
02 engineering and technology
010402 general chemistry
01 natural sciences
Article
Stress (mechanics)
lcsh:QD241-441
lcsh:Organic chemistry
Graphite
Composite material
sliding elements
Izod impact strength test
General Chemistry
Tribology
021001 nanoscience & nanotechnology
0104 chemical sciences
modifiers
properties
PLA
additives
0210 nano-technology
Subjects
Details
- Language :
- English
- ISSN :
- 20734360
- Database :
- OpenAIRE
- Journal :
- Polymers
- Accession number :
- edsair.doi.dedup.....712fa720e30d0fa9c662ae6026cb3fc5
- Full Text :
- https://doi.org/10.3390/polym12061250