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Silicone modified epoxy resins with good toughness, damping properties and high thermal residual weight

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Abstract

In this research, a series of epoxy-silicone copolymers were prepared from methyl phenyl silicone intermediates (PMPS) with a bisphenol A type epoxy resin (E-51) by condensation with dilaurate dibutyltin acting as catalyst. The chemical structure of the siloxane-bridged epoxy resin was characterized by Fourier transform infrared spectroscopy (FTIR), 1H-NMR and an epoxy equivalent weight (EEW) test. The modified epoxy resins showed better elongation at break and izod notched impact strength than neat resin. TGA results revealed that the residue at 600 °C of the modified epoxy resin increased with the increase of siloxane content. DMA tests displayed that the addition of silicone effectively enhanced the damping properties. Morphology studies indicated that the increase in izod notched impact strength is due to the suitable diameter of silicone phases because of the silicone toughening effect.

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Acknowledgments

The authors would like to thank the National Natural Science Foundation of China (51273118), the Science & Technology Pillar Program of Sichuan (2013FZ0006) and the Fundamental Research Funds for the Central Universities of China (2015SCU11008) for financial support, and the Analytical and Testing Center of Sichuan University for providing SEM measurements.

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Authors and Affiliations

  1. State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Sichuan University, Chengdu, 610065, China

    Zhengguang Heng, Yang Chen, Huawei Zou & Mei Liang

  2. Safety Environment Quality Surveillance and Inspection Research Institute of CNPC Chuanqing Drilling & Exploration Corporation, Chengdu, 618300, China

    Zhong Zeng

Authors
  1. Zhengguang Heng
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  2. Zhong Zeng
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  3. Yang Chen
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  4. Huawei Zou
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  5. Mei Liang
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Correspondence to Yang Chen or Huawei Zou.

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Heng, Z., Zeng, Z., Chen, Y. et al. Silicone modified epoxy resins with good toughness, damping properties and high thermal residual weight. J Polym Res 22, 203 (2015). https://doi.org/10.1007/s10965-015-0852-x

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  • DOI: https://doi.org/10.1007/s10965-015-0852-x

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