4.7 Article

A detailed evaluation of surface, thermal, and flammable properties of polyamide 12/glass beads composites fabricated by multi jet fusion

Journal

VIRTUAL AND PHYSICAL PROTOTYPING
Volume 16, Issue -, Pages S39-S52

Publisher

TAYLOR & FRANCIS LTD
DOI: 10.1080/17452759.2021.1899463

Keywords

Additive manufacturing; multi jet fusion; polyamide 12; glass beads composites; surface property; thermal property; flammable property

Funding

  1. National Natural Science Foundation of China [51805239, ZDSYS201703031748354]
  2. Shenzhen Science and Technology Innovation Commission [KQTD2019092917250571]

Ask authors/readers for more resources

PA12/glass beads composites manufactured via the MJF technique exhibit improved performance, including enhanced dimensional accuracy, lower surface roughness, higher surface hardness, increased decomposition temperature, and char yield compared to neat PA12. However, the flame retardance of the composite remains unchanged. The incorporation of glass beads effectively regulates the dimensional accuracy and improves the overall performance of the composite material.
Multi jet fusion (MJF) is an emerging powder three-dimensional (3D) printing technology with an ultrafast printing speed, in which polyamide 12 (PA12) is the main material currently utilised. Although structurally sophisticated 3D components have been printed by MJF, there are limitations due to the high cost of printing materials and inferior performance of the printed parts. Here, PA12/glass beads (PA12/GBs) composites with improved performance were manufactured via the MJF technique. Incorporating GBs effectively regulated the dimensional accuracy. Furthermore, the composite possessed lower surface roughness and higher surface hardness than neat PA12. Thermal analysis showed that the composite exhibited an enhanced decomposition temperature (390 degrees C) and char yield (38.4 wt.%) compared to neat PA12. Remarkably, the incorporation of GBs did not improve the flame retardance of neat PA12. We identified the improved functionalities of PA12/GBs composites in terms of dimensional accuracy, surface, and thermal properties and analysed possible mechanisms for the observed increased flammability.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available