不同颜色燃气专用聚乙烯混配料的性能对比  

Performance Comparison of Polyethylene Compounds for Gas Purposes with Different Colors

作　　者：李曼曼 雷素敏 白丽萍[2] 池永生 危迎春 景发岐 LI Manman;LEI Sumin;BAI Liping;CHI Yongsheng;WEI Yingchun;JING Faqi

机构地区：[1]北京市燃气集团研究院,北京100011 [2]北京市燃气集团有限责任公司,北京100035 [3]沧州明珠塑料股份有限公司,河北沧州061019 [4]亚大塑料制品有限公司,河北涿州072761 [5]山东胜邦塑胶有限公司,山东东营257100

出　　处：《煤气与热力》2024年第7期V0014-V0018,共5页Gas & Heat

摘　　要：以同一聚乙烯混配料供应商的牌号M(黑色)和牌号N(黄色)两个牌号混配料为原料生产的PE管材样本为例,测试样本的物理性能和力学性能。由于聚乙烯黑色混配料与非黑色混配料生产时添加的抗氧剂不同,导致管材存在性能差异。以测试的样本为例,黄色混配料的热稳定性明显优于黑色混配料,特别是经过长期储存后,优势仍然显著;黑色混配料的拉伸性能优于黄色混配料。随着储存时间增加,氧化诱导时间呈现下降的趋势,可以作为表征PE材料老化性能的指标;随着储存时间增加,熔体质量流动速率呈现增大的趋势,但是否可作为表征老化性能的参数仍有待进一步研究;断裂伸长率随着储存时间增加,呈现一定的下降趋势,但是由于无法排除样本表面划伤的影响,因此,还需要进一步验证。从应用管理的角度来说,非黑色混配料不易造假,具有鲜明的指示性和警示作用,便于燃气企业统一管理,更具优势。The physical and mechanical properties of PE pipe samples produced with two grades of compounds M(black)and N(yellow)from the same supplier of polyethylene compounds are tested.Because the different antioxidants added during the production of polyethylene black compound and non black compound,there are performance differences in the pipes.Taking the tested samples as examples,the thermal stability of the yellow compound is significantly better than that of the black compound,especially after long-term storage,the advantage is still significant.The tensile performance of black s compound is better than that of yellow compound.As the storage time increases,the oxidation induction time shows a decreasing trend,which can be used as an indicator to characterize the aging performance of PE material.As the storage time increases,the melt mass flow rate shows an increasing trend,but whether it can be used as a parameter to characterize aging performance still needs further research.As the storage time increases,the elongation at break shows a certain decreasing trend,but further verification is needed as the influence of surface scratches on the sample cannot be ruled out.From the perspective of application management,non black compound is not easily falsified and has a clear indicative and warning effect,which is convenient for gas enterprises to manage uniformly and has more advantages.

关 键 词：聚乙烯混配料 物理性能 力学性能 氧化诱导时间 熔体质量流动速率 

分 类 号：TU996.7[建筑科学—供热、供燃气、通风及空调工程]