| 改性硫酸钙晶须对吸水膨胀橡胶性能的影响 |
| Effect of Modified Calcium Sulfate Whisker on the Properties of Water-swelling Rubber |
| 投稿时间：2017-11-10 修订日期：2017-11-10 |
| DOI：10.12136/j.issn.1000-890X.2019.01.0022 |
| 中文关键词: 改性硫酸钙晶须 偶联剂 吸水膨胀橡胶 丁腈橡胶 拉伸性能 吸水性能 |
| 英文关键词: modified calcium sulfate whisker coupling agent water-swelling rubber NBR tensile property water absorption property |
| 基金项目:贵州省教育厅青年科技人才成长项目[黔教合KY字（2016）225] |
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| 中文摘要: |
| 研究偶联剂（偶联剂KH570和聚硅氧烷11-100）改性硫酸钙晶须对以丁腈橡胶为主体材料的吸水膨胀橡胶（WSR）拉伸性能和吸水性能的影响。结果表明：偶联剂尤其是聚硅氧烷11-100改性硫酸钙晶须后，WSR的300%定伸应力、拉伸强度和拉断伸长率均提高，吸水速率加快，吸水膨胀率增大，质量损失率减小；吸水初期WSR的拉伸强度提高，吸水平衡后WSR的拉伸强度下降到14.52 MPa。 |
| 英文摘要: |
| 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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