Tensile Fracture Characteristics of Polysulfide Sealants Immersed in Oil

Author:

Ding Mei Li1,Zhang Wei Fang2,Hou Wei Guo2,Liu Xiao2

Affiliation:

1. Beijing University of Aeronautics and Astronautics

2. Beihang University

Abstract

In this paper, the morphology characteristic of tensile test fracture of polysulfide sealants immersed in oil for different time was observed through scanning electron microscopy. Combined with the performance data of tensile test, the effect of oil immersion time on the properties and fracture behavior of sealant was studied. The results show that the fracture of polysulfide sealants includes rough region and flat region. After being immersed in oil, the area of rough region diminishes and the roughness of fracture decreases. Within 168h, oil immersion time has little effect on the tensile strength and elongation of sealants.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Reference8 articles.

1. Wang Shaomin, Han Xuewen. Production and application of polysulfide sealants. New Chemical Materials. (2002).

2. Zhang Encheng, Zhang Jianshe. Characteristics and application technology of polysulfide sealant. Memoir of the eighth seminar.

3. Liu Gang, Qin Pengbo, Wu Songhua. Study on a novel heat resistant and fuel resistant polythioether sealant. China adhesive. (2009).

4. Xu Fenghe, Di Xiangfa, Guo Meili. Failure analysis of non-metal parts in aviation. Beijing. Science Press. (1993).

5. Xu Maokai, Zhang Shuping. Study on the fractured profiles and microscopic failure mechanism of silicone rubber. Fiber composites. (2007).

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