Artificial weathering of ethylene-propylene-diene monomer (EPDM) rubber

被引：0

作者：

School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China ^{[1
]}

不详 ^{[2
]}

机构：

来源：

Beijing Keji Daxue Xuebao | 2008年 / 12卷 / 1422-1427期

关键词：

Artificial weathering - Artificial weathering environment - Cross-link densities - Ethylene propylene diene monomer - Exposure-time - Oxidation layers - Tear strength - Testing machine;

D O I：

暂无

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学科分类号：

摘要：

The effects of artificial weathering on the chemical structure, surface topography and mechanical properties of ethylene-propylene-diene monomer (EPDM) were investigated by X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), computer-controlled testing machine and spectrophotometer. The results showed that an oxidation layer formed after 90 d of exposure. XPS results confirmed the production of C-O-C/C-OH, C=O and O-C=O groups. With prolonging exposure time, the crosslink density increased linearly, the surface of EPDM turned to redder, more yellow and lighter. Little voids and micro cracks were formed under exposure to artificial weathering environment. The tensile strength, tear strength and hardness increased with prolonging exposure time.

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