Brounstein Zachary, Zhao Jianchao, Geller Drew, Gupta Nevin, Labouriau Andrea
Los Alamos National Laboratory, Los Alamos, NM 87545, USA.
Department of Nanoscience and Microsystems Engineering, University of New Mexico, Albuquerque, NM 87131, USA.
Polymers (Basel). 2021 Sep 16;13(18):3125. doi: 10.3390/polym13183125.
Primarily used as an encapsulant and soft adhesive, Sylgard 184 is an engineered, high-performance silicone polymer that has applications spanning microfluidics, microelectromechanical systems, mechanobiology, and protecting electronic and non-electronic devices and equipment. Despite its ubiquity, there are improvements to be considered, namely, decreasing its gel point at room temperature, understanding volatile gas products upon aging, and determining how material properties change over its lifespan. In this work, these aspects were investigated by incorporating well-defined compounds (the Ashby-Karstedt catalyst and tetrakis (dimethylsiloxy) silane) into Sylgard 184 to make modified formulations. As a result of these additions, the curing time at room temperature was accelerated, which allowed for Sylgard 184 to be useful within a much shorter time frame. Additionally, long-term thermal accelerated aging was performed on Sylgard 184 and its modifications in order to create predictive lifetime models for its volatile gas generation and material properties.
西尔加德184主要用作密封剂和软粘合剂，是一种经过设计的高性能有机硅聚合物，其应用涵盖微流体、微机电系统、力学生物学以及保护电子和非电子设备及仪器。尽管它无处不在，但仍有一些改进方面值得考虑，即降低其室温下的凝胶点、了解老化时的挥发性气体产物以及确定材料性能在其使用寿命期间如何变化。在这项工作中，通过将定义明确的化合物（阿什比-卡斯泰德催化剂和四（二甲基硅氧基）硅烷）加入西尔加德184中以制备改性配方，对这些方面进行了研究。由于这些添加物，室温下的固化时间加快了，这使得西尔加德184能够在更短的时间内发挥作用。此外，对西尔加德184及其改性物进行了长期热加速老化试验，以便为其挥发性气体生成和材料性能建立预测寿命模型。
