Journal of Materials Science

, Volume 44, Issue 16, pp 4270–4278 | Cite as

Free-volume properties and toughening behavior of cyanate ester resin/carboxyl-randomized liquid butadiene-acrylonitrile rubber composites

  • Minfeng Zeng
  • Xudong Sun
  • Xiandong Yao
  • Yun Wang
  • Mingzhu Zhang
  • Baoyi Wang
  • Chenze Qi
Article
First Online:
Received:
Accepted:

Abstract

The toughness of cyanate ester resin (CE) matrix was improved significantly with addition of carboxyl-randomized liquid butadiene-acrylonitrile rubber (CRBN). The curing behavior of the system was studied by differential scanning calorimetric (DSC) and Fourier transform infrared spectrum (FTIR). The results showed that carboxyl groups on the CRBN chain had slight activation effect to CE curing reaction at the beginning of the cure process. Phase separation was the main toughening mechanism for CE/CRBN composites. The existence of micro-size pores induced by small amount of the low weight molecular part of CRBN might be another toughening mechanism. The toughening mechanism was proved powerfully from the aspect of free-volume using positron annihilation lifetime spectroscopy (PALS). PALS is qualitatively sensitive to the existence of pores induced by low molecular weight part of CRBN during curing process.

Keywords

Rubber Particle Rubber Content Cyanate Ester Rubber Phase Positron Annihilation Lifetime Spectroscopy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Notes

Acknowledgements

This work is supported by National Nature Science Foundation of China (Grant number 10875079), and Nature Science Foundation of Zhejiang Province, China (Grant number Y4080448).

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Minfeng Zeng
    • 1
  • Xudong Sun
    • 1
  • Xiandong Yao
    • 1
  • Yun Wang
    • 1
  • Mingzhu Zhang
    • 1
  • Baoyi Wang
    • 2
  • Chenze Qi
    • 1
  1. 1.Institute of Applied ChemistryShaoxing UniversityShaoxingPeople’s Republic of China
  2. 2.Institute of High Energy PhysicsThe Chinese Academy of ScienceBeijingPeople’s Republic of China

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