Induction heating of dual magnetic particles embedded PDMS molds for roller embossing applications

Hsu, Ming-Huai; Tsai, Yi-Chieh; He, Jyun-Wei; Yang, Sen‐Yeu

doi:10.1007/s00542-023-05436-7

Cited by 6 publications

(1 citation statement)

References 22 publications

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“…Hsu and co-workers [71] succeeded in overcoming the issues (namely, poor thermal conductivity, low hardness, and heating ineffectiveness) related to the use of polydimethylsiloxane for roller embossing processes, employed for replicating microstructures onto different polymeric substrates. In particular, Ni magnetic particles (having different sizes) were incorporated into polydimethylsiloxane at 70 wt.% loading; IH was provided by an external 7.5 kW generator working at 80 kHz.…”

Section: Other Applicationsmentioning

confidence: 99%

Insights into Induction Heating Processes for Polymeric Materials: An Overview of the Mechanisms and Current Applications

Mariani

Malucelli

2023

Energies

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In polymer systems, induction heating (IH) is the physical outcome that results from the exposure of selected polymer composites embedding electrically-conductive and/or ferromagnetic fillers to an alternating electromagnetic field (frequency range: from kHz to MHz). The interaction of the applied electromagnetic field with the material accounts for the creation of magnetic polarization effects (i.e., magnetic hysteresis losses) and/or eddy currents (i.e., Joule losses, upon the formation of closed electrical loops), which, in turn, cause the heating up of the material itself. The heat involved can be exploited for different uses, ranging from the curing of thermosetting systems, the welding of thermoplastics, and the processing of temperature-sensitive materials (through selective IH) up to the activation of special effects in polymer systems (such as self-healing and shape-memory effects). This review aims at summarizing the current state-of-the-art of IH processes for polymers, providing readers with the current limitations and challenges, and further discussing some possible developments for the following years.

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Section: Other Applicationsmentioning

confidence: 99%

Insights into Induction Heating Processes for Polymeric Materials: An Overview of the Mechanisms and Current Applications

Mariani

Malucelli

2023

Energies

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Radio Frequency Joule Heating for Healing and Reversible Adhesion Enabled by Dynamic Covalent Bonds

Oh,

Sang,

Dasari

et al. 2024

Adv Eng Mater

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Herein, radio frequency (RF) Joule heating is used to trigger dynamic covalent bond exchange in a furan‐maleimide Diels–Alder polymer (DAP). Prior work shows that carbon susceptors can be incorporated into materials and undergo Joule heating when exposed to an electric field. Herein, carbon nanotubes (CNTs) are added to the DAP to make the material responsive to RF fields, and to enable selective, noncontact healing behavior of DAP after electric field exposure. After healing, mechanical testing is conducted to compare the tensile strength and toughness of the healed samples with the mechanical properties of the original, undamaged samples. A 96.2% recovery in tensile strength and an 83.2% recovery in toughness are observed. Also, RF heating of DAP/CNT enables repeated bonding and debonding of the material, allowing for adhesion and deadhesion on demand.

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A double-sided PDMS mold for double-sided embossing by rollers

Hsu,

Tsai,

et al. 2023

Microsyst Technol

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Induction heating of dual magnetic particles embedded PDMS molds for roller embossing applications

Cited by 6 publications

References 22 publications

Insights into Induction Heating Processes for Polymeric Materials: An Overview of the Mechanisms and Current Applications

Insights into Induction Heating Processes for Polymeric Materials: An Overview of the Mechanisms and Current Applications

Radio Frequency Joule Heating for Healing and Reversible Adhesion Enabled by Dynamic Covalent Bonds

A double-sided PDMS mold for double-sided embossing by rollers

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