| Tensile-included Crystallization Behavior of OC/NRL Nanocomposites by Cyclic Stretching |
| Received:August 06, 2020 Revised:August 06, 2020 |
| DOI：10.12136/j.issn.1000-890X.2020.12.0904 |
| Key Words: organic clay；NRL；nanocomposites；emulsion intercalation method；cyclic stretching；tensile-induced crystallization |
| Author Name | Affiliation | E-mail | | HAO Yingjie | Taiyuan Institute of Technology | 631071167@qq.com | | TAN Haozhe | Beijing University of Chemical Technology | | | WANG Jian | North University of China | | | CHU Lijun | Beijing University of Chemical Technology | | | LIANG Yurong* | Taiyuan Institute of Technology；North University of China | liangyr7103@aliyun.com |
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| Abstract: |
| Organic clay（OC）/natural rubber latex（NRL） nanocomposites（NRLCNs） were prepared by emulsion intercalation method，and the effects of the addition level of OC and cyclic stretching on the tensile-induced crystallization behavior of NRLCNs were studied. The results showed that NRLCNs had an intercalation structure. With the increase of the addition level of OC，the tensile strength of NRLCNs first increased and then decreased. When the addition level of OC was 4 phr，the mechanical properties of NRLCNs reached the best，with a tensile strength of 15. 86 MPa，which was higher than that of natural rubber compound（without CO） by 58%. Meanwhile，the addition of OC helped NRLCNs to undergo tensile-induced crystallization，and as its addition level increased，the tensile strain at the critical mutation point of tensile crystallization of NRLCNs decreased. At the same time，after the cyclic stretching treatment，the rubber molecules of NRLCNs had a certain orientation，and when they were stretched again，they could reach the critical mutation point faster，resulting in tensile-induced crystallization. |
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