| Effect of Modified Calcium Sulfate Whisker on the Properties of Water-swelling Rubber |
| Received:November 10, 2017 Revised:November 10, 2017 |
| DOI：10.12136/j.issn.1000-890X.2019.01.0022 |
| Key Words: modified calcium sulfate whisker；coupling agent；water-swelling rubber；NBR；tensile property；water absorption property |
| Author Name | Affiliation | E-mail | | ZHOU Qin | Guizhou Institute of Technology | 525977667@qq.com | | LI Yang | Guizhou Institute of Technology | | | DUAN Panfeng | Guizhou University | | | WU Yujiao* | Guizhou Institute of Technology；Guizhou University | wuyujiao007@163.com |
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| Abstract: |
| The effect of calcium sulfate whisker modified by coupling agent（coupling agent KH570 and polysiloxane 11-100）on the tensile and water absorption properties of the water-swelling rubber（WSR）with nitrile rubber（NBR） as the main material was investigated. The results showed that，after the calcium sulfate whiskers were modified by coupling agents，especially polysiloxane 11-100，the modulus at 300% elongation，tensile strength and elongation at break of WSR were improved，the water absorption rate was accelerated，the water swelling rate increased，and the mass loss rate decreased. At the beginning stage of water absorption，the tensile strength of WSR was improved，and the tensile strength of WSR was reduced to 14.52 MPa when the water swelling reached equilibrium. |
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