研究了不同共混比例的顺丁橡胶(BR)与天然橡胶(NR)组成的共混胶的裂纹尖端生长行为.采用裂纹扩展在线研究平台(DMA-Crack Growth)、超高速摄像仪、扫描电子显微镜和扫描探针显微镜对裂纹尖端进行实时追踪观测,拍摄不同共混比例的橡胶裂纹尖端的裂纹扩展动态图像.结果表明,共混比例达到m(BR)/m(NR)=50/50时,韧带均匀分布在裂纹尖端,韧带多而细且均匀,可以有效减缓橡胶裂纹扩展速度;橡胶开裂的断面随着BR共混比例的增加,表面形貌由类三角形向扇形形貌过渡.最后讨论了裂纹增长的机理.
参考文献
| [1] | 邓海燕.安全轮胎与橡胶机械业（上）[J].橡塑技术与装备,2005(06):11-15. |
| [2] | 吴晓辉,何少剑,冯一平,张立群.橡胶复合材料裂纹扩展的研究进展[J].特种橡胶制品,2009(05):50-55. |
| [3] | Weng, G.;Huang, G.;Lei, H.;Qu, L.;Nie, Y.;Wu, J. .Crack initiation and evolution in vulcanized natural rubber under high temperature fatigue[J].Polymer Degradation and Stability,2011(12):2221-2228. |
| [4] | 王娜,孙学红,王灿,赵树高.胶/胶界面状态与橡胶疲劳破坏性能的关系[J].特种橡胶制品,2012(04):25-28. |
| [5] | Yanchun Tang;Kai Lu;Xiaojun Cao .Nanostructured Thermoplastic Vulcanizates by Selectively Cross-Linking a Thermoplastic Blend with Similar Chemical Structures[J].Industrial & Engineering Chemistry Research,2013(35):12613-12621. |
| [6] | H. J. Kim;G. R. Hamed .On the reason that passenger tire sidewalls are based on blends of natural rubber and cis-polybutadiene[J].Rubber Chemistry and Technology,2000(4):743-752. |
| [7] | Bonamy, D.;Bouchaud, E. .Failure of heterogeneous materials: A dynamic phase transition?[J].Physics Reports: A Review Section of Physics Letters (Section C),2011(1):1-44. |
| [8] | Gengsheng Weng;Guangsu Huang;Liangliang Qu .Large-Scale Orientation in a Vulcanized Stretched Natural Rubber Network: Proved by In Situ Synchrotron X-ray Diffraction Characterization[J].The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical,2010(21):7179-7188. |
| [9] | Weng, G.;Huang, G.;Lei, H.;Qu, L.;Nie, Y.;Wu, J. .Crack initiation and evolution in vulcanized natural rubber under high temperature fatigue[J].Polymer Degradation and Stability,2011(12):2221-2228. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%