| 铸造废砂填料对天然橡胶胶料的补强性能研究 |
| Reinforcement Effect of Foundry Waste Sand Filler on NR Compound |
| 投稿时间：2021-08-31 修订日期：2021-08-31 |
| DOI：10.12136/j.issn.1000-890X.2023.02.0118 |
| 中文关键词: 铸造废砂 天然橡胶 填料 改性 补强 耐磨性能 |
| 英文关键词: foundry waste sand NR filler modification reinforcement wear resistance |
| 基金项目:江苏省大学生创新创业训练计划项目（2021114630142）；常州市社会发展科技支撑项目（CE20195038） |
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| 中文摘要: |
| 采用物理研磨并用十二烷基三甲氧基硅烷对铸造废砂进行改性，研究改性铸造废砂作为填料对天然橡胶（NR）胶料的补强效果。结果表明：改性铸造废砂的疏水性及其在NR中的分散性与NR的相容性较好；填充70～80份改性铸造废砂NR胶料的硬度较大，拉伸强度和撕裂强度较高，耐磨性能较好，这时改性铸造废砂的补强性能较佳；铸造废砂作为橡胶填料可以替代部分炭黑和白炭黑，具有良好的环境、社会和经济效益。 |
| 英文摘要: |
| The foundry waste sand was physically ground and modified with dodecyltrimethoxysilane，
and then the reinforcement effect of the modified foundry waste sand as a filler on natural rubber
（NR） compounds was investigated. The results showed that the modified foundry waste sand had good
hydrophobicity，good dispersibility in NR and excellent compatibility with NR. The NR compounds filled
with 70～80 phr of the modified foundry waste sand had high hardness，good tensile strength and tear strength，
and excellent wear resistance，demonstrating preferable reinforcement capability. Therefore，the modified
foundry waste sand could be used as a filler to replace part of carbon black and silica in compounds，which
also generated good environmental，social and economic benefits. |
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