Processing properties and pyrolysis behavior of novolak-hexamethylenetetramine mixtures

Wich, Felix; Flauder, Stefan; Schneider, Natalie; Fleck, Michael; Langhof, Nico; Krenkel, Walter; Schafföner, Stefan

doi:10.1080/20550340.2023.2187687

Cited by 3 publications

(1 citation statement)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The LSI process has three main steps: (1) shaping of the CF reinforced plastic (CFRP) part, where multiple processes like pressing, RTM, or filament winding can be used; (2) pyrolysis to C/C to detach all noncarbons and form a crack network; and (3) liquid silicon infiltration into the cracks to form C/C-SiC. Typical matrix materials have a rather high char yield and are dimensionally stable during pyrolysis [20,21]. Therefore, phenolic resins like Novolak and resoles or thermoplastics like PEEK are used, as are matrix polymers [22,23].…”

Section: Introductionmentioning

confidence: 99%

Inductive Heating of Ceramic Matrix Composites (CMC) for High-Temperature Applications

Hackert,

Stiller,

Winhard

et al. 2024

Materials

View full text Add to dashboard Cite

The inductive heating of a CMC susceptor for industrial applications can generate very high process temperatures. Thus, the behavior of a silicon carbide-based matrix with carbon-fiber-reinforced carbon (C/C-SiC) as a susceptor is investigated. Specifically, the influence of fiber length and the distribution of carbon fibers in the composite were investigated to find out the best parameters for the most efficient heating. For a multi-factorial set of requirements with a combination of filling levels and fiber lengths, a theoretical correlation of the material structure can be used as part of a digital model. Multi-physical simulation was performed to study the behavior of an alternating magnetic field generated by an inducing coil. The simulation results were verified by practical tests. It is shown that the inductive heating of a C/C-SiC susceptor can reach very high temperatures in a particularly fast and efficient way without oxidizing if it is ensured that a silicon carbide-based matrix completely encloses the fibers.

show abstract