Hybrid-Filler-Incorporated, Photocurable, Thermally Conductive Elastomers with High Stretchability and Self-Attachability,Industrial & Engineering Chemistry Research

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Hybrid-Filler-Incorporated, Photocurable, Thermally Conductive Elastomers with High Stretchability and Self-Attachability
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2023-06-02 , DOI: 10.1021/acs.iecr.3c00862
Jong-Ho Back _{1,

2} , Wonjoo Lee ₁ , Hyun-Joong Kim ₂ , Youngchang Yu ₁ , Dowon Ahn ₁

Affiliation

The thermal management issues caused by low-thermal-conductivity elastomers in flexible devices can be mitigated using thermally conductive elastomers (TCEs), which contain thermally conductive fillers. TCEs are usually prepared by solvent mixing and thermal curing, but these steps are also problematic as they emit volatile organic compounds and cause thermal damage, respectively. Furthermore, fabrication of a complex structure is strictly restricted in these steps. Therefore, we fabricated a TCE by photocuring and additionally imparting adhesive properties, enabling uniform heat transfer. White spherical alumina and black rod-shaped multiwalled carbon nanotubes were used together as a hybrid filler. The prepared TCE exhibited higher adhesive strength than a commercial TCE, especially in terms of its lap shear strength, which was 61.5-fold higher. Grid-patterned TCEs were successfully manufactured by photocuring with a masking film. This patterning can facilitate the fabrication of complex-structured TCEs by light-driven three-dimensional printing.

中文翻译：

掺有混合填料的光固化导热弹性体，具有高拉伸性和自附着性

使用含有导热填料的导热弹性体 (TCE) 可以缓解柔性设备中由低导热性弹性体引起的热管理问题。TCE 通常通过溶剂混合和热固化制备，但这些步骤也存在问题，因为它们会分别释放挥发性有机化合物并造成热损伤。此外，复杂结构的制造在这些步骤中受到严格限制。因此，我们通过光固化制造 TCE，并额外赋予粘合性能，从而实现均匀的热传递。白色球形氧化铝和黑色棒状多壁碳纳米管一起用作混合填料。制备的 TCE 表现出比商业 TCE 更高的粘合强度，特别是在其搭接剪切强度方面，高出 61.5 倍。通过使用掩模膜进行光固化成功制造了网格图案的 TCE。这种图案化可以通过光驱动三维打印促进复杂结构 TCE 的制造。

更新日期：2023-06-02

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