| Structure and Properties of Organic Clay/IIR and Organic Clay/CIIR Nanocomposites |
| Received:February 22, 2020 Revised:February 22, 2020 |
| DOI：10.12136/j.issn.1000-890X.2020.08.0575 |
| Key Words: IIR；CIIR；organic clay；nanocomposites；intercalated structure；gas barrier property |
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| Abstract: |
| Organic clay/butyl rubber nanocomposites（IIRCNs） and organic clay/chlorinated butyl rubber nanocomposites （CIIRCNs ） were prepared by melt intercalation. The effects of the addition level of organic clay on the vulcanization properties，physical properties and gas barrier properties of the nanocomposites were investigated. The results showed that the t90 of IIRCNs and CIIRCNs were prolonged，and the curing rate decreased with the increase of the addition level of organic clay. The tensile strength and tear strength first increased and then decreased，and the maximum values were reached when the addition level of organic clay was 10 phr. Due to the addition of organic clay，IIRCNs and CIIRCNs had better gas barrier properties，and the latter was better. The results of X-ray diffraction and scanning electron microscopy showed that when the addition level of organic clay was 10 phr，it was uniformly dispersed in the rubber matrix and formed an intercalated structure. |
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