| 核桃壳粉填充丁苯橡胶复合材料的制备与性能研究 |
| Study on Preparation and Properties of Walnut Shell Powder Filled SBR Composite |
| 投稿时间：2015-08-09 修订日期：2015-08-09 |
| DOI： |
| 中文关键词: 丁苯橡胶 核桃壳粉 绿色轮胎 硅烷偶联剂 抗湿滑性能 界面作用 |
| 英文关键词: SBR walnut shell powder green tire silane coupling agent wet-skid resistance interfacial interaction |
| 基金项目:广州市科技计划项目重大科技专项(503130079) |
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| 中文摘要: |
| 本文采用核桃壳粉和丁苯橡胶制备了WSP/SBR复合材料,研究了WSP目数和硅烷偶联剂Si69对复合材料硫化特性、物理性能与动态性能的影响。结果表明,未改性WSP的添加对混炼胶的t10和t90影响不大,但会降低混炼胶的ΔM,随着WSP目数的增大,ΔM先增加后降低；添加Si69改性后WSP/SBR混炼胶的t10和t90有所增加,且ΔM随着Si69用量的增加而增加。添加未改性WSP会降低SBR硫化胶的拉伸强度与磨耗性能,但是撕裂强度、断裂伸长率、硬度均增大；随着未改性WSP目数的增大,断裂伸长率和硬度有所降低,压缩疲劳温升先增加后降低,WSP300目时复合材料拉伸强度的降低幅度最低。随着Si69用量的增加,复合材料的拉伸强度提高；Si69改性能够改善WSP/SBR复合材料的耐磨耗性能和降低压缩疲劳温升。加入未改性WSP混炼胶料的G"明显下降；WSP目数增大,Payne效应增强,而Si69改性有利于减弱混炼胶的Payne效应。添加300目未改性WSP复合材料的抗湿滑性能有所提高而滚动阻力略有上升,当采用3phr Si69改性后,复合材料在高温区和低温区下的tanδ分别得到了进一步的下降和上升,有利于抗湿滑性能和低滚动阻力二者平衡。 |
| 英文摘要: |
| WSP/SBR composite with wet-skid resistance was prepared by using WSP(walnut shell) and SBR. The effects of content and particle size of WSP and Si69 on the properties of WSP/SBR composite, such as curing behavior, physical properties and dynamic properties were investigated. The results showed that Addition of non-modified WSP has little effect on the scorch time (t10) and optimum cure time (t90) of SBR/WSP compounds, but could reduced the ΔM. The t10 and t90 of SBR/WSP compounds filled with silane coupling agent Si69 were prolonged and the ΔM increased. The tensile strength and abrasion resistance of WS/SBR composite were decreased with addition of non-modified WSP, but tear strength, elongation at break and hardness were increased. Decreasing the non-modified WSP particle size reduced the heat buildup but decreased the elongation at break and hardness. When the mesh of WSP was 300, WS/SBR composite got the optimal tensile strength. Addition of Si69 can improve the tensile strength and abrasion resistance, and reduce the heat buildup of SBR vulcanizate. The Storage modulus of SBR compounds were decreased with addition of WSP. Payne effect SBR/WSP compounds were enhanced with decreasing the non-modified WSP particle size, but modified with Si69 can Weakened it to some extent. The rolling resistance of WSP/SBR composite was increased a little with addition 300 mesh of WSP, but the wet-skid resistance could be improved, especially by modifying with Si69 can improve and balance these performance of SBR/WSP composite effectively. |
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