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| 混炼工艺对白炭黑硅烷偶联反应程度及胶料性能的影响 |
| Effects of Mixing Process on Silane Coupling Reaction Degree of Silica and Properties of Compound |
| Received:July 25, 2022 Revised:July 25, 2022 |
| DOI：10.12135/j.issn.1006-8171.2023.07.0424 |
| 中文关键词: 混炼工艺；白炭黑；硅烷偶联反应程度；加工性能；物理性能；动态力学性能 |
| 英文关键词: mixing process；silica；silane coupling reaction degree；processability；physical property；dynamic mechanical property |
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| 中文摘要: |
| 研究混炼工艺对白炭黑硅烷偶联反应程度及胶料性能的影响。结果表明：随着白炭黑硅烷偶联反应程度的增大，胶料的门尼焦烧时间延长，硫化速度加快，小应变下的模量减小，Payne效应降低，填料与填料之间的相互作用减弱，70 ℃时的损耗因子明显减小，白炭黑在胶料中的分散均匀性提高；白炭黑硅烷偶联反应程度对混炼温度的敏感度较高，混炼温度对硅烷偶联反应程度的影响大于混炼时间的影响；当混炼温度为140～145 ℃、混炼时间为100～180 s时，胶料的物理性能最佳。通过计算白炭黑硅烷偶联反应的表观活化能，得到大配合试验胶料混炼工艺的最佳混炼时间。 |
| 英文摘要: |
| The effects of mixing processes on the silane coupling reaction degree of silica and the properties of compound were studied.The results showed that with the increase of silane coupling reaction degree of silica，the Mooney scorch time of the compound was prolonged and the curing rate was accelerated，the modulus under small strain and the Payne effect decreased，and the interaction between filler and filler was reduced，the loss factor at 70 ℃ was significantly decreased，and the dispersion uniformity of silica in compound was improved.The silane coupling reaction degree of silica was highly sensitive to mixing temperature，and the influence of mixing temperature on silane coupling reaction degree of silica was greater than that of mixing time.When the mixing temperature was 140～145 ℃ and the mixing time was 100～180 s，the physical properties of the compound were the best.By calculating the apparent activation energy of silica silane coupling reaction，the optimum mixing time of the mixing process of the large mix test compound was obtained. |
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