工程科学学报Issue(6)：771-776,6.DOI:10.13374/j.issn2095-9389.2015.06.014
三元乙丙橡胶紫外老化表观行为及纳米防老化剂作用机制
Surface behaviors of EPDM rubber and mechanism of nano anti-aging agent under UV condition
摘要
Abstract
ABSTRACT Based on ultraviolet ( UV) accelerated aging tests, aging processes were tracked to study the effects of nano-TiO2 anti-aging agent on the surface aging behaviors and anti-aging ability of ethylene-propylene-diene monomer ( EPDM) . The anti-aging mech-anism was also analyzed by Fourier transform infrared spectroscopy ( FT-IR) and UV absorption spectroscopy. When the aging time prolongs, the surfaces of EPDM become rough, the chromatic aberration and the glossiness loss increase, the surface carbonyl index rises, while the rate of UV absorbance declines. FT-IR results demonstrate that with coating SiO2 , the photocatalytic degradation reac-tion of nano-TiO2 is inhibited and the aging process of EPDM is postponed. After adding nano-TiO2 anti-aging agent, the hole density decreases, the chromatic aberration and glossiness loss declines by 0.97 and 22.29%, respectively, the surface carbonyl index descends by 0.06, and the rate of UV absorbance increases by 3.92%. The anti-aging ability of EPDM enhances.关键词
三元乙丙橡胶/紫外辐射/加速老化/老化行为/抗老化能力Key words
EPDM rubber/ultraviolet radiation/accelerated aging/aging behavior/anti-aging ability分类
化学化工引用本文复制引用
陈红婷,高瑾,卢琳,李晓刚,方月华,郭春云..三元乙丙橡胶紫外老化表观行为及纳米防老化剂作用机制[J].工程科学学报,2015,(6):771-776,6.基金项目
国家自然科学基金资助项目(51133009) （51133009）
国家材料环境腐蚀平台 （）
