| 白炭黑结构对胎面胶性能的影响 |
| Effect of Silica Structure on Properties of Tread Compound |
| 投稿时间：2021-02-07 修订日期：2021-02-07 |
| DOI：10.12136/j.issn.1000-890X.2022.07.0490 |
| 中文关键词: 白炭黑 胎面胶 结构参数 堆积状态 比表面积 分散性 混炼 动态力学性能 |
| 英文关键词: silica tread compound structure parameter aggregation state specific surface area dispersion mixing dynamic mechanical property |
| 基金项目: |
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| 中文摘要: |
| 从堆积状态和比表面积两方面研究不同结构白炭黑对胎面胶性能的影响。结果表明：对于相同堆积状态、不同比表面积的白炭黑，白炭黑的比表面积越大，其填充胶料的混炼温升越高，混炼功率越大，加工难度也越大；随着白炭黑的比表面积增大、初生粒径减小，白炭黑的团聚体增多，分散性变差；对于相同比表面积（200 m２·g-1）、不同堆积状态的白炭黑，气相法白炭黑A200在橡胶基体中的分散性最好，沉淀法白炭黑200MP的分散性次之，沉淀法白炭黑200GR的分散性最差；相比于沉淀法白炭黑200MP和200GR，气相法白炭黑A200可以同时增强和增韧硫化胶，并减小硫化胶的滚动阻力和磨耗量，但是硫化胶的抗湿滑性能较差。 |
| 英文摘要: |
| The effects of silicas with different structures on the properties of tread compound were studied from two aspects：aggregation state and specific surface area. The results exhibited that，for the silicas with the same aggregation state but different specific surface areas，the larger the specific surface area of the silica was，the higher the mixing temperature rise of the filled compound was，the greater the mixing power was，and the greater the processing difficulty was. With the increase of specific surface area and the decrease of primary particle size of the silicas，the aggregates of the silica increased，and the dispersion decreased. For the silicas with the same specific surface area but different aggregation states，for example，the silica having a specific surface area of 200 m２·g-1，the dispersion of fumed silica A200 in rubber matrix was better than that of precipitated silica 200MP，while precipitated silica 200GR had the worst dispersion. Compared with precipitated silica 200MP and 200GR，fumed silica A200 could simultaneously reinforce and toughen the vulcanizate，and reduce the rolling resistance and abrasion loss of the vulcanizate，but the wet-skid resistance of the vulcanizate was poor. |
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