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The effect of interfacial thermal history on the adhesion of thermoplastic-elastomeric composite interfaces made via dissimilar material printing
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DOI：10.1080/17452759.2026.2687945.png)
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Abstract
En 中文
Dissimilar material printing (DMP) of thermoplastics and elastomers promises highly-tailorable manufacturing of rigid-flexible interfaces for sensing, bioinspired interfaces, and robotics. However, realising multi-process DMP, which allows a significantly wider design space of rigid and soft polymers than single process DMP, requires understanding of how processing conditions affect the interface. This work investigates how the print bed holding temperature affects the adhesion between dissimilar polymers manufactured via Fused Filament Fabrication (FFF) and Direct Ink Write (DIW). In-situ thermal camera analysis was used to measure the thermal history of the polymers. Additional experiments showed that curing rates increased at elevated temperatures in the DIW ink, while no crystallization was measured in the thermoplastic. The fracture toughness increased with holding temperature and analysis on the fracture surfaces showed more chemical interactions at higher temperatures. This work shows that thermal history can be used to control the adhesion between co-printed thermoplastics and elastomers.
Keywords:
Dissimilar material printing
fused filament fabrication
direct ink write
adhesion
thermoplastic
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