| 混炼工艺及白炭黑/炭黑并用比对NR胶料性能的影响 |
| Effects of Mixing Process and Silica/Carbon Black Blending Ratio on Properties of NR Compound |
| 投稿时间：2020-09-28 修订日期：2020-09-28 |
| DOI：10.12136/j.issn.1000-890X.2021.11.0847 |
| 中文关键词: 混炼工艺 液相叠层法 白炭黑 炭黑 并用比 NR 硫化特性 物理性能 分散性 |
| 英文关键词: mixing process liquid phase lamination method silica carbon black blending ratio NR vulcanization characteristic physical property dispersibility |
| 基金项目:国家自然科学基金委员会-山东省人民政府海洋科学研究中心联合资助项目（U1606401）；山东省重点研发计划（重大科技创新工程） 项目（2020CXGC010312） |
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| 中文摘要: |
| 采用液相叠层法混炼工艺制备NR胶料，研究白炭黑/炭黑并用比对NR胶料性能的影响，并与采用干法混炼工艺制备的NR胶料对比。结果表明：随着白炭黑/炭黑并用比的增大，采用两种混炼工艺的NR混炼胶的FL和Fmax均呈增大趋势，t10和t90基本呈延长趋势，采用液相叠层法混炼工艺的NR混炼胶的t90比采用干法混炼工艺的NR混炼胶略有缩短；采用两种混炼工艺的NR硫化胶的Payne效应呈增强趋势，填料分散效果变差；采用两种混炼工艺的NR混炼胶的导热性能呈下降趋势，采用液相叠层法混炼工艺的NR混炼胶的导热性能优于采用干法混炼工艺的NR混炼胶；采用两种混炼工艺的NR硫化胶的硬度、拉伸强度和拉断伸长率总体呈下降趋势，采用液相叠层法混炼工艺的NR硫化胶的撕裂强度逐渐下降，采用干法混炼工艺的NR硫化胶的撕裂强度先降低再提高再降低；采用干法混炼工艺的NR混炼胶易出现气孔现象，采用液相叠层法混炼工艺的NR混炼胶的气泡减少，炭黑团聚程度更小，分散更为均匀。 |
| 英文摘要: |
| NR compound was prepared by liquid phase lamination mixing process.The effect of silica/carbon black blending ratio on the properties of NR compound was studied，and compared with NR compound prepared by dry mixing process.The results showed that，with the increase of silica/carbon black blending ratio，FL and Fmax of NR compound with two mixing processes increased，t10 and t90 basically prolonged，and t90 of NR compound with liquid phase lamination mixing process was slightly shorter than that of NR compound with dry mixing process.Payne effect of NR compound with two mixing processes increased，and the filler dispersion effect became worse.The thermal conductivity of NR compound with two mixing processes showed a downward trend，and the thermal conductivity of NR compound with liquid phase lamination mixing process was better than that of NR compound with dry mixing process.The hardness，tensile strength and elongation at break of NR vulcanizate with two mixing processes generally showed a downward trend，the tear strength of NR vulcanizate with liquid phase lamination mixing process gradually decreased，and the tear strength of NR vulcanizate with dry mixing process first decreased，then increased and then decreased.The NR compound with dry mixing process was prone to porosity，the NR compound with liquid phase laminated mixing process had less bubbles，smaller carbon black agglomeration degree and more uniform dispersion. |
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