| 碳纳米管增强丁腈橡胶的性能研究 |
| Study the property of NBR enhanced by carbon nanotubus |
| 投稿时间：2016-09-09 修订日期：2016-09-09 |
| DOI： |
| 中文关键词: 碳纳米管 丁腈橡胶 动态力学性能 扫面电子显微镜 |
| 英文关键词: carbon nanotubes NBR dynamic mechanical property scanning electron microscope |
| 基金项目: |
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| 中文摘要: |
| 研究了碳纳米管用量对丁腈橡胶硫化特性、力学性能、高温拉伸性能、导热性能、耐磨性能、压缩疲劳性能和动态力学性能的影响,并通过扫描电子显微镜观察碳纳米管在橡胶中的分散情况。结果表明：随着碳纳米管含量的增加,胶料的最小扭矩和最大扭矩逐渐增大,焦烧时间和正硫化时间逐渐减少；拉伸强度和撕裂强度均是先提高后降低,拉断伸长率逐渐降低,100%定伸应力和300%定伸应力显著提高；高温拉伸性能中,性能保持率逐渐提高；导热系数逐渐提高,DIN磨耗体积逐渐降低；静压缩率逐渐降低,永久变形和疲劳温升逐渐增加。在动态力学性能中,加入碳纳米管后,橡胶的损耗因子峰值降低,储能模量在温度较低时较小。由扫描电子显微镜观察拉伸试样断面可知,碳纳米管在橡胶中整体分散均匀,局部存在团聚现象。 |
| 英文摘要: |
| The effect of carbon nanotubes content on vulcanization characteristics,mechanical property,wear resistance,thermal conductivity,tensile property at high temperature,compression fatigue property and dynamic mechanical property of NBR,and the dispersion of carbon nanotubes in rubber was observed by scanning electron microscope.The results showed that,with increasing of carbon nanotubes content,the minimum torque and maximum torque increased gradually, scorch time and cure time decreased gradually;tensile strength and tear strength increased first and then decreased,the elongation at break decreased gradually,and modulus at 100% and modulus at 300% significantly increased;In tensile property at high temperature,property retention rate was gradually increased;heat conduction coefficient increased gradually,and abrasion volume of DIN decreased;the static compression ratio was gradually reduced,and the permanent deformation and fatigue temperature rised increased gradually.In the dynamic mechanical property,the loss factor of rubber was smaller,and the storage modulus was smaller when the temperature was lower after carbon nanotubes were added.It can be known by scanning electron microscope that the whole dispersion of carbon nanotubes in rubber was uniform,and there was phenomenon of agglomeration in local. |
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