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Polymer Bulletin
Published in: Polymer Bulletin 4/2021

20-04-2020 | Original Paper

Cure characteristics and physico-mechanical properties of natural rubber/silica composites: effect of natural rubber-graft-poly(2-hydroxyethyl acrylate) content

Authors: Warisara Borapak, Narong Chueangchayaphan, Skulrat Pichaiyut, Wannarat Chueangchayaphan

Published in: Polymer Bulletin | Issue 4/2021

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Abstract

The grafting of poly(2-hydroxyethyl acrylate) onto natural rubber (NRgPHEA) was used in order to compatibilize silica filler in NR composites. NR/silica compounds were prepared with various NRgPHEA contents from 0 to 12 phr, while the 14.5% grafting level in NRgPHEA and 20 phr silica content was held fixed. The cure characteristics of the compound were examined with a moving die rheometer. The physico-mechanical properties of NR/silica composites were analyzed by tensile testing, thermal gravimetric analysis, determination of bound rubber content and dynamic mechanical analysis. The results showed that scorch time and cure time decreased, while cure rate index increased with NRgPHEA content. The highest 100% modulus, 300% modulus, reinforcing index and tensile strength were obtained with 3 phr NRgPHEA. The addition of NRgPHEA can enhance wet skid resistance and thermal stability.
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Metadata
Title
Cure characteristics and physico-mechanical properties of natural rubber/silica composites: effect of natural rubber-graft-poly(2-hydroxyethyl acrylate) content
Authors
Warisara Borapak
Narong Chueangchayaphan
Skulrat Pichaiyut
Wannarat Chueangchayaphan
Publication date
20-04-2020
Publisher
Springer Berlin Heidelberg
Published in
Polymer Bulletin / Issue 4/2021
Print ISSN: 0170-0839
Electronic ISSN: 1436-2449
DOI
https://doi.org/10.1007/s00289-020-03199-z

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