摘要
利用光电子能谱(XPS)分析方法,研究了不同老化温度和老化时间下极性化SBS的热氧老化行为。试验结果表明,高温下不含防老剂的极性化SBS会发生热氧老化。经热氧老化后,极性化SBS表面O元素的相对含量高于未老化试样中O元素的相对含量,且弹性体表面有C=O生成。随老化时间延长,弹性体表面元素组成中O的相对含量逐渐升高,随老化温度升高,弹性体表面元素组成中氧的含量先升高而后降低。对于极性化SBS的热氧老化,老化温度对其影响程度要大于老化时间的影响。
The thermal oxidation aging of the pyridyl-functionalized SBS without antioxidants in different aging conditions by X-ray photoelectron spectroscopy （XPS） was studied in this paper. The experiment results indicate that the thermal oxidation of pyridyl-functionalized SBS without antioxidants occurrs seriously in high temperature. The content of oxygen element of pyridyl-functionalized SBS aged is higher than that of the pyridyl-functionalized SBS without aging, and the C=O group forms after the thermal oxidation aging. With the time prolonging, the content of oxygen element in the composition of polymer surface element increases gradually, meanwhile, with the temperature increasing, the content of oxygen element in the composition of polymer surface element increases firstly and then reduces, showing the change of group for C-O and C=O. As for the thermal oxidation of pyridyl-functionalized SBS, the temperature has more obvious effect than that for the aging time.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2010年第7期82-85,共4页
Polymer Materials Science & Engineering
基金
黑龙江省哈尔滨市科技攻关项目(2007AA4BG026)
东北林业大学研究生科技创新项目(GRAM09)资助
关键词
极性化SBS
热氧老化
光电能谱
表面元素分析
pyridyl-functionalized SBS
thermal oxidation aging
X-ray photoelectron spectroscopy
surface elemental analysis
