About this Abstract |
Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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Symposium
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2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Presentation Title |
Fabrication of Elastomeric Shape-Stabilized Phase Change Materials through Vat Photopolymerization |
Author(s) |
Yiqun Fu, Timothy Long, Christopher Williams |
On-Site Speaker (Planned) |
Yiqun Fu |
Abstract Scope |
Shape-stabilized phase change materials (ss-PCMs) offer excellent thermal energy storage/release capabilities through a phase transition without deformation of the part shape. Additive manufacturing (AM) presents a promising solution to fabricate complex ss-PCM geometries designed for effective energy management. However, most of the AM fabricated ss-PCMs are brittle and suffer from compromised thermal performance. Here, we present vat photopolymerization (VP) of an elastomeric ss-PCM, in which part geometry is defined by photocuring an acrylic scaffold around latex particles that are suspended in the resin. A thermal post-process coalesces the particles forming a semi-interpenetrating network. In this work, we demonstrate fabrication of intricate geometries of styrene-isoprene-styrene block copolymers supported ss-PCMs (SIS-ss-PCM) with polyethylene glycol (PEG) as encapsulated PCM. The effects of PEG loading on thermal performance and mechanical properties of the SIS-ss-PCM are investigated. The SIS-ss-PCMs with 20 wt. % PEG exhibit latent heat of 32.14 J/g and enthalpy efficiency of 99.81%. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |