Fracture Behavior of Organic Silicon Rubber at Different Extension Rate

Abstract:

Fracture behavior of organic silicon rubber at the extension rate of 100, 300, 500 and 700 mm/min at room temperature was studied in this paper. The fracture surface morphology was observed by scanning electron microscopy (SEM). Effects of different extension rate on the tensile strength tensile fracture behavior and mechanism were investigated. The results showed that fracture of the organic silicon rubber was composed by flat region and rough region, while the rough region was relatively small. With the increasing extension rate, the area of flat region enlarged while rough region decreased, and the secondary cracks appeared when the extension rate reached critical value. The relationship of the tensile strength and elongation with the extension rate were similar, both of which rised and then droped as the extension rate increased, and further studies were needed for the fracture mechanism.

• Periodical: Materials Science Forum (Volume 687)
• Pages: 571-575
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.687.571
• Online since: June 2011
• Authors: Xiao Liu, Wei Fang Zhang, Sheng Wang Liu, Wei Guo Hou, Mei Li Ding
• Keywords: Extension Rate, Fracture Morphology, Organic Silicon Rubber, Tensile Properties

References

[1] Kang Jin. Application and Modification of Silicone Rubber Technology. Rubber Science and Technology. (2008).

[2] Willis J M, Denecour R L. Improving Butyl Tread Wear. Rubber Age, 1968, 7(1): 34-40.

[3] Maiti S N, Barman N. Mechanical Properties of ABS/CSM Rubber Blends. International Journal of Polymeric Materials, 2005, 54(6): 527-539.

DOI: 10.1080/00914030390278635

[4] Michael A F. Vulcanization of Elastomers. Rubber World, 1993, 209(5): 18-22.

[5] Fang Qin-zhi, Li Hui-min, Ouyang Xiao-dong. Effect of Loading Rate on the Tensile Properties of PC/ABS. Polymer Materials Science & Engineering, 2006, 22(1): 133-134.

[6] Xu Fenghe, Di Xiangfa, Guo Meili. Failure Analysis of Non-Metal Parts in Aviation. Beijing: Science Press, (1993).

[7] Xu Maokai, Zhang Shuping. Study on the Fractured Profiles and Microscopic Failure Mechanism of Silicone Rubber. Fiber Composites, (2007).

[8] Fan Jin-juan, Liu Gao-yuan. Effect of Loading Rate on Tensile Fracture Behavior of Silicon Rubber. Materials for Mechanical Engineering, 2007, V01. 31.

[9] Liu Jin-hua, Li Da-gang. Influence of Loading Rate on Tension Properties of Low-Density Polyethylene Film. Packaging Engineering, (2005).