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- Title
Cold Spray-Based Additive Manufacturing of Thermosets.
- Authors
Hong, Bo; Wang, Kaifeng; Gu, Peihua
- Abstract
This research proposes an approach of utilizing thermosetting polymer powders for additive manufacturing via a customized low-pressure cold spray system. To reveal the underlying deposition mechanisms during the polymer powder-impacting process, the microstructure, thermal and mechanical properties of deposited samples are examined and compared with those of the as-received and fully cured materials. It is found that severe plastic deformation, partial melting, and curing reaction (including latent curing agent decomposition and cross-link reaction) occur simultaneously to form the bonding. However, due to the insufficient heat generation for complete cross-linking reaction, a post-heat treatment is needed to improve the mechanical properties of the fabricated objects, where a low heating rate is necessary to maintain the sample geometry.
- Subjects
CURING; THERMOSETTING polymers; CHEMICAL decomposition; MATERIAL plasticity; THERMAL properties; POLYMERS
- Publication
Journal of Thermal Spray Technology, 2022, Vol 31, Issue 7, p2003
- ISSN
1059-9630
- Publication type
Article
- DOI
10.1007/s11666-022-01428-7