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
李曼曼 1雷素敏 1白丽萍 2池永生 3危迎春 4景发岐5
作者信息
- 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
- 折叠
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.
Abstract
The physical and mechanical proper-ties of PE pipe samples produced with two grades of compounds M(black)and N(yellow)from the same supplier of polyethylene compounds are tested.Be-cause the different antioxidants added during the pro-duction of polyethylene black compound and non black compound,there are performance differences in the pipes.Taking the tested samples as examples,the ther-mal 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 increa-ses,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 in-creasing trend,but whether it can be used as a parame-ter 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 scrat-ches on the sample cannot be ruled out.From the per-spective of application management,non black com-pound is not easily falsified and has a clear indicative and warning effect,which is convenient for gas enter-prises 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Key words
polyethylene compound/physical property/mechanical property/oxidation induction time/melt mass flow rate引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据