PE滴灌带耐老化性能研究  

Study of Aging Resistance of Polyethylene Drip

作　　者：阿山卡德尔·居马卡德尔 关莉[2] 热依扎·别坎 倪玲贵 买买提江·依米提 Sanhader Jumahader;Guan Li;Riza Beken;Ni Linggui;Mamatjan Yimit(College of Chemistry and Chemical Engineering, Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uyghur Autonomous Region, Xinjiang University, Urumqi 830046, China;Research Institute of Dushanzi Petrochemical Co.Petrochina, Dushanzi 833699, China)

机构地区：[1]新疆大学化学与化工学院,石油天然气精细化工教育部和自治区重点实验室,乌鲁木齐830046 [2]中国石油独山子石化公司研究院,新疆独山子833699

出　　处：《工程塑料应用》2017年第12期93-96,共4页Engineering Plastics Application

基　　金：国家自然科学基金项目(21364014,21474082)

摘　　要：将线性低密度聚乙烯(PE–LLD)/高密度聚乙烯(PE–HD)/低密度聚乙烯(PE–LD)的滴灌带试样经过自然暴露老化,并对老化前后试样进行力学性能、流变性能及红外光谱测试分析以研究滴灌带的耐老化性能。结果表明:户外暴晒60 d后,纯PE(0#)试样的拉伸强度保持率和断裂伸长率保持率分别为81%和15.6%,已失去使用价值;而户外暴晒120 d后,1~#,2~#,3~#,4~#试样断裂伸长率保持率分别为61.9%,75.1%,82.3%,87.8%。毛细管流变10 min时,户外暴晒120 d试样扭矩保持率顺序为4~#>3~#>2~#>1~#>0~#试样;户外暴晒120 d后,试样红外谱图在1 757 cm^(-1)处生成的羰基峰从0~#~4~#依次向低波数移动,并且变得越来越弱。基于此,同时加抗氧剂、光稳定剂和炭黑复配使用的4~#试样耐老化性能最佳。The aging resistance of different formula of linear low density polyethylene(PE-LLD)/high density polyethylene(PE-HD)/low density polyethylene(PE-LD)drip irrigation zone samples was studied which was aged by natural exposure through mechanical properties,rheological properties and infrared spectroscopy test.The results show that the tensile strength retention and elongation at break of formula0#sample for outdoor exposure60days is81%and15.6%which have lost their use value,while1#,2#,3#and4#are61.9%,75.1%,82.3%and87.8%that was exposured120days,respectively.The torque retention rate of outdoor exposure120days sample is4#>3#>2#>1#>0#after the capillary rheometer for10min.From the outdoor exposure120days sample infrared spectrum,the carbonyl peak generated at1757cm-1moves to the low wavenumber sequentially from0#to4#samples and becomes weaker and weaker.Based on this,while adding antioxidant,light stabilizer and carbon black compound formulations for4#sample,its anti-aging performance is the best.

关 键 词：聚乙烯 滴灌带 自然暴露老化 断裂伸长率 耐老化性能 

分 类 号：TB332[一般工业技术—材料科学与工程]