Journal
EXPRESS POLYMER LETTERS
Volume 12, Issue 2, Pages 180-185Publisher
BUDAPEST UNIV TECHNOL & ECON
DOI: 10.3144/expresspolymlett.2018.16
Keywords
rubber; ENR/SiO2 hybrid; sol-gel reaction; interaction
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Funding
- National Basic Research Program of China [2015CB654700, 2015CB674703]
- Special Fund for Agro-scientific Research in the Public Interest from the Ministry of Agriculture, China [201403066]
- National Natural Science Foundation of China [51573051]
- National Key Technology R & D Program of China [2012BAE01B03]
- Fundamental Research Funds for the Central Universities [2017BQ033]
- China Postdoctoral Science Foundation [2017M612658]
- China Scholarship Council
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In this paper, epoxidized natural rubber was reinforced by silica generated in-situ though the sol-gel method using tetraethoxysilane(TEOS) as precursor. The results showed that the ring opening reaction of epoxy group appeared in the insitu reaction progress, where the hydrogen bond between Si-OH and C-OH was mainly formed to enhance the stress-strain behavior of ESH simultaneously. During the hot pressing progress, the compound was crosslinked via the chemical reaction of Si-OH and C-OH. The chemical bond between Si-OH and C-OH reinforced rubber-filler interaction, resulting further improved the stress-strain behavior. Besides, comparing with precipitated SiO2 filled ENR, the dispersion of SiO2 in ENR matrix was distinctly more uniform though the sol-gel method, along with the enhancement of mechanical properties. Herein, our findings open up a new way to prepare an environmentally friendly rubber composite with excellent dispersion and strong rubber-filler interaction without curing agent effectively.
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