化工进展2017，Vol.36Issue(4)：1358-1365,8.DOI:10.16085/j.issn.1000-6613.2017.04.027
基于AHP-DEA的聚乙烯热氧老化影响因素灰色关联分析
Grey correlation analysis of influencing factors of polyethylene thermo-oxidation aging based on AHP-DEA
摘要
Abstract
In this work,eight representative types of polyethylene(PE)samples were selected and exposed in accelerated thermo-oxidation environment for up to 64 days. Taking analytic hierarchy procedure(AHP)based grey relational analysis method as the central model and data envelopment analysis(DEA)as the auxiliary model,we quantitatively studied the influence of different factors on PE thermo-oxidation properties by calculating the correlation coefficient between different factors (thermo-oxidation aging time,temperature,density,crystallinity,molecular weight)and PE bending strength. The results showed that lower of density,higher degree of crystallinity and wider molecular weight distribution of PE results in faster decrease of the bending strength which was mainly concentrated in the early and latter part of aging. The order of relational degree between different factors and PE bending strength was crystallinity,molecular weight distribution(MWD),density, aging temperature and aging time. In the internal factors,crystallinity had the greatest influence on PE thermo-oxidation aging property,with a correlation degree of 2.857. The higher the crystallinity,the more the flaw in PE,which facilitates the oxidation under thermo-oxidation environment and the aging phenomenon gets more severe.关键词
聚乙烯/氧化/层次分析法(AHP)/数据包络法(DEA)/灰色关联分析/结晶度Key words
polyethylene/oxidation/analytic hierarchy process(AHP)/data envelopment analysis (DEA)/grey relational analysis/crystallinity分类
化学化工引用本文复制引用
代军,晏华,王雪梅,郭骏骏,胡志德,杨健健..基于AHP-DEA的聚乙烯热氧老化影响因素灰色关联分析[J].化工进展,2017,36(4):1358-1365,8.基金项目
重庆市研究生科研创新项目(CYS16239). （CYS16239）
