A systematic study on enhancing curing times and thermomechanical properties of SYLGARD™ 186

Results in Materials Pub Date : 2025-03-04 DOI:10.1016/j.rinma.2025.100681

John R. Stockdale, Santosh Adhikari, Xavier M. Torres, Adam Pacheco, Shelbie A. Legett, Andrea Labouriau

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Abstract

Sylgard 186 is a versatile polydimethylsiloxane (PDMS) elastomer that is cured via a hydrosilylation reaction. Its room temperature curing time is long, leaving much to be desired in terms of application timeframe. Curing the resin at higher temperatures overcomes this problem, but mechanical properties of the cured elastomer tend to deteriorate. Thus, the present work evaluated chemical modifications to the standard Sylgard 186 with the goal to decrease room temperature curing time while maintaining or improving thermomechanical properties. A modified Sylgard 186 formulation that combines the base component of Sylgard 186 with the curing agent of Sylgard 184 in a 30:1 ratio is introduced. The modified Sylgard 186 elastomer displays, after 4 h of curing at 25 °C, Shore A hardness of 29.5 ± 2.8. These results point to a new, readily available, fast curing Sylgard 186 formulation that has the potential to aid in a wide range of applications including potting within microelectronics, mechanobiology, and aerospace components.

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提高SYLGARD™186固化时间和热机械性能的系统研究

Sylgard 186是一种多功能聚二甲基硅氧烷（PDMS）弹性体，通过硅氢化反应固化。它的室温固化时间长，在应用时间方面还有很多不足之处。在较高的温度下固化树脂克服了这个问题，但固化弹性体的机械性能往往会恶化。因此，目前的工作评估了标准Sylgard 186的化学改性，目的是减少室温固化时间，同时保持或改善热机械性能。介绍了一种将Sylgard 186的基础组分与Sylgard 184的固化剂以30:1的比例组合的Sylgard 186改性配方。改性后的Sylgard 186弹性体在25℃固化4 h后，邵氏硬度为29.5±2.8。这些结果表明，一种新的、容易获得的、快速固化的Sylgard 186配方具有广泛应用的潜力，包括微电子、机械生物学和航空航天部件的灌封。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Results in Materials

CiteScore

5.30

自引率

0.00%

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