| 片层钠基蒙脱土调控炭黑对天然橡胶/丁苯橡胶纳米复合材料性能的影响 |
| Regulation of Carbon Black by Lamellar Sodium-based Montmorillonite and Its Influence on Properties of NR/SBR Nanocomposite |
| 投稿时间：2022-03-07 修订日期：2022-03-07 |
| DOI：10.12136/j.issn.1000-890X.2023.04.0251 |
| 中文关键词: 片层钠基蒙脱土 炭黑 偏析行为 分散 天然橡胶 丁苯橡胶 纳米复合材料 耐磨性能 |
| 英文关键词: lamellar sodium-based montmorillonite carbon black segregation behavior dispersion NR SBR nanocomposite wear resistance |
| 基金项目: |
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| 中文摘要: |
| 采用乳液共混法先制备天然橡胶（NR）/钠基蒙脱土（Na-MMT）、丁苯橡胶（SBR）/Na-MMT和NR/SBR/Na-MMT母胶，再制备得到相应的NR/SBR/Na-MMT纳米复合材料，研究Na-MMT对NR/SBR/Na-MMT纳米复合材料的微观形貌、物理性能和耐磨性能的影响。结果表明：采用NR/Na-MMT母胶共混法制备的NR/SBR/Na-MMT纳米复合材料中Na-MMT的分散效果最好，剥离状态的Na-MMT占比最大，炭黑的分散明显改善，片层Na-MMT可在一定程度上调控炭黑在NR/SBR/Na-MMT纳米复合材料中的偏析行为；该橡胶纳米复合材料的定伸应力、拉伸强度和撕裂强度最大，阿克隆磨耗量最小（0.177 cm3），磨耗表面沟壑最浅，耐磨性能最佳。 |
| 英文摘要: |
| Natural rubber（NR）/lamellar sodium-based montmorillonite（Na-MMT），styrene-butadiene
rubber （SBR）/Na-MMT and NR/SBR/Na-MMT masterbatches were prepared by emulsion blending
method，then the corresponding NR/SBR/Na-MMT nanocomposites were prepared，and the effect of Na-
MMT on the microscopic morphology，physical properties and wear resistance of the NR/SBR/Na-MMT
nanocomposites was investigated. The results showed that the dispersion of Na-MMT in the NR/SBR/Na-
MMT nanocomposites prepared by using the NR/Na-MMT masterbatch was the best，and the proportion of
Na-MMT in the exfoliated state was the largest，the dispersion of carbon black was also obviously improved，
and the lamellar Na-MMT could regulate the segregation behavior of carbon black in the NR/SBR/Na-
MMT nanocomposites to a certain extent. As a result，the tensile strength，stress at constant elongation and
elongation at break of the NR/SBR/SBR/Na-MMT nanocomposites were the largest，the Akron abrasion
was the smallest（0. 177 cm3），and the grooves on the worn surface was shallowest，showing the best wear
resistance. |
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