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.
作者
阿山卡德尔·居马卡德尔
关莉
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)
出处
《工程塑料应用》
CAS
CSCD
北大核心
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)
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
polyethylene
drip irrigation zone
natural exposure aging
elongation at break
aging resistance
作者简介
联系人：阿山卡德尔· 居马卡德尔，硕士，主要从事高分子材料老化研究
