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Damping mechanism of chlorobutyl rubber and phenolic resin vulcanized blends

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Abstract

An intensive study has been undertaken on the damping mechanism of chlorinated butyl rubber (CIIR) and phenolic resin (PR) vulcanized blends. Evidence from morphology observations of blend sections by scanning electron microscopy, extraction experiments, molecular weight analysis by gel permeation chromatography indicates that except a part of PR crosslinked with CIIR, the others remain linear and disperse in the CIIR matrix to form a two-phase continuity. The tan δ curves of blend without striking peak split from the dynamic mechanical spectra and inward shift of glass transition of linear PR suggests that cured CIIR and linear PR is miscible to a certain extent, thus, the phase separation in the blends can be described as slight phase separation. There observations are interpreted in terms of variations of free volume characterized by positron annihilation lifetime spectroscopy.

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Acknowledgement

This work was financially supported by the National Natural Science Foundation of China (Grant No. 10276025) and the Ministry of Education (the Foundation for Ph.D. training, Grant No. 20040610027) of China.

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Authors and Affiliations

  1. College of Polymer Science and Engineering, Sichuan University, Chengdu, China

    Liangliang Qu, Guangsu Huang, Jinrong Wu & Zhenhua Tang

  2. State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China

    Liangliang Qu, Guangsu Huang, Jinrong Wu & Zhenhua Tang

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  1. Liangliang Qu
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  2. Guangsu Huang
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  4. Zhenhua Tang
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Qu, L., Huang, G., Wu, J. et al. Damping mechanism of chlorobutyl rubber and phenolic resin vulcanized blends. J Mater Sci 42, 7256–7262 (2007). https://doi.org/10.1007/s10853-006-1466-9

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  • DOI: https://doi.org/10.1007/s10853-006-1466-9

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