合成材料老化与应用2024，Vol.53Issue(6)：24-26,40,4.
自然日光气候对燃气用聚乙烯管材拉伸性能和微观结构的影响
The Influence of Sunlight on the Tensile Properties and Microstructure of Polyethylene Pipes for Gaseous Fuels
摘要
Abstract
The tensile properties and microstructure changes of polyethylene pipes for gaseous fuels after sunlight aging were studied through Fourier transform infrared spectroscopy analysis,differential scanning calorimetry,and determination of tensile properties.The results showed that polyethylene pipes for gaseous fuels absorbed solar radiation,accelerated reactions such as chain breakage and oxidation,and generated unsaturated double bonds and oxygen-containing groups such as carbonyl and hydroxyl groups.In addition,due to diffusion limited oxidation,the oxidation induction time for surface of pipes exposed to sunlight decreased the fastest,and the fracture elongation of pipes exposed to sunlight decreased the most severely,with little change in tensile yield stress.关键词
燃气用管材/聚乙烯/自然日光/拉伸性能/微观结构Key words
pipes for gaseous fuels/polyethylene/sunlight/tensile properties/microstructure分类
化学化工引用本文复制引用
肖潇,陈桓,林文进,王涛..自然日光气候对燃气用聚乙烯管材拉伸性能和微观结构的影响[J].合成材料老化与应用,2024,53(6):24-26,40,4.基金项目
福建省市场监督管理局科技项目(FJMS2021004). （FJMS2021004）
