| Structure and Properties of Organic Clay/IIR Nanocomposites |
| Received:April 13, 2021 Revised:April 15, 2021 |
| DOI：10.12136/j.issn.1000-890X.2021.12.0912 |
| Key Words: butyl rubber；organic clay；nanocomposite；tensile property；hysteresis ring；microscopic phase state；gas barrier performance |
| Author Name | Affiliation | E-mail | | WANG Jiangle | Taiyuan Institute of Technology | wang292711@163.com | | LIANG Yurong* | Taiyuan Institute of Technology | liangyr7103@aliyun.com | | REN Rongting | Taiyuan Institute of Technology | | | LIU Bingbing | Taiyuan Institute of Technology | | | SUN Qi | Taiyuan Institute of Technology | |
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| Abstract: |
| Organic clay（OC）/butyl rubber（IIR） nanocomposites（IIRCNs） were prepared by melt
blending method，and the structural changes of OC and the physical properties，microscopic phase state and
gas barrier performances of IIRCNs were studied. The results showed that when the additional level of OC
was 10 phr，the clay lamellar spacing of OC in IIRCNs increased to 4. 09 nm（the initial lamellar spacing of
OC was 2. 96 nm），indicating the formation of intercalated structure. The tensile strength of IIRCNs was
16. 20 MPa，which was 102% higher than IIR compound’s 8. 0 MPa，and the dispersion of OC in the rubber
matrix was finer and more uniform. After prestressed cyclic tensile treatment，the tensile strength of IIRCNs
reached 17. 30 MPa，which was 6. 8% higher than that of the IIRCNs without prestressed cyclic tensile
treatment. The OC with large aspect ratio was uniformly distributed in the rubber matrix，which greatly
improved the gas barrier performances of the composites，and the gas permeability of IIRCNs was 25% lower
than that of IIR compound. |
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