| 改性隐晶质石墨/炭黑/丁腈橡胶复合材料的制备与性能 |
| Preparation and Properties of Modified CG/Carbon Black/NBR Composites |
| 投稿时间：2021-05-12 修订日期：2021-05-12 |
| DOI：10.12136/j.issn.1000-890X.2021.11.0832 |
| 中文关键词: 隐晶质石墨 改性 液体丁腈橡胶 丁腈橡胶 炭黑 复合材料 包覆改性 分散程度 |
| 英文关键词: CG modification LNBR NBR carbon black composite coating modification dispersion degree |
| 基金项目:国家重点研发计划项目（2017YFB0310905） |
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| 中文摘要: |
| 采用液体丁腈橡胶（LNBR）改性隐晶质石墨（CG），研究改性CG/炭黑/丁腈橡胶（NBR）复合材料的硫化特性、物理性能、动态力学性能和填料分散性。结果表明：CG颗粒的尺寸小、断面丰富、表面粗糙和较多结构缺陷增强了其反应活性；CG和改性CG均可以提高硫化胶的拉伸性能和撕裂强度，并且随着其用量增大，硫化胶的物理性能进一步提高；与CG相比，改性CG具有更好的补强效果，这是由于LNBR包覆改性使其表面呈疏水性，有助于填料-橡胶的界面作用增强以及填料在橡胶基体中的分散性和浸润性提高。 |
| 英文摘要: |
| Abstract：Cryptocrystalline graphite（CG） was modified by liquid nitrile butadiene rubber（LNBR），
and the vulcanization characteristics，physical properties，dynamic mechanical properties and filler dispersion
of modified CG/carbon black/nitrile rubber（NBR） composites were studied. The results showed that the
reactivity of CG was high due to its small particle size，rich sections，large amount of rough surfaces and
many structural defects. The tensile property and tear strength of the vulcanizates were improved by CG
and modified CG，and the physical properties of the vulcanizates were further improved with the increase
of the addition level of CG and modified CG. Compared with CG，modified CG had a better reinforcement
effect. This was because the LNBR coating modification made its surface hydrophobic，which enhanced the
interfacial interaction of the filler-rubber and improved the dispersion and wettability of the filler in the
rubber matrix. |
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