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| 草酸改性沸石及其橡胶复合材料的制备与性能研究 |
| Preparation and Properties of Oxalic Acid-Modified Zeolite and Its Composites |
| Received:April 23, 2026 Revised:April 23, 2026 |
| DOI：10.12137/j.issn.2095-5448.2026.07.0371 |
| 中文关键词: 改性沸石 酸处理 硅烷偶联剂 天然橡胶 复合材料 压缩生热 动态力学性能 |
| 英文关键词: modified zeolite acid treatment silane coupling agent NR composite compression heat generation dynamic mechanical property |
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| 中文摘要: |
| 采用草酸对经球磨的天然沸石进行改性，再接枝硅烷偶联剂Si69，用改性沸石替代部分炭黑N330后填充在天然橡胶（NR）中，制备改性沸石/NR复合材料，并对改性沸石结构和复合材料性能进行研究。结果表明：草酸可以使沸石骨架脱铝，降低沸石极性，减小沸石团聚几率，改善沸石在橡胶基体中的分散效果；改性沸石对NR的补强效果优于未改性沸石，但不如炭黑N330；随着沸石替代炭黑N330用量的增大，复合材料的物理性能下降，但压缩生热和滚动阻力降低；填充5份改性沸石的复合材料的抗湿滑性能较好。 |
| 英文摘要: |
| The ball-milled natural zeolite was modified by oxalic acid，followed by grafting with the silane coupling agent Si69.The modified zeolite was used to partially replace carbon black N330 in natural rubber（NR） to prepare a modified zeolite/NR composite，the structure of modified zeolite and the properties of the composite were studied.The results showed that oxalic acid could remove aluminum from the zeolite framework，reduce its polarity，decrease the likelihood of zeolite agglomeration and improve its dispersion in the rubber matrix.The reinforcing effect of the modified zeolite on NR was superior to that of unmodified zeolite but inferior to carbon black N330.As the amount of zeolite replacing carbon black N330 increased，the physical properties of the composite declined，but its compression heat generation and rolling resistance decreased.The wet skid resistance of the composite filled with 5 phr modified zeolite was better. |
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