|本期目录/Table of Contents|

[1]许惠芳,慕雪梅,魏福庆,等.不同牌号LDPE树脂的流变与结构性能[J].石化技术与应用,2022,6:383-386.
 XU Hui-fang,MU Xue-mei,WEI Fu-qing,et al.Rheological and structural properties of different grades of LDPE resins[J].Petrochemical technology & application,2022,6:383-386.
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不同牌号LDPE树脂的流变与结构性能(PDF)

《石化技术与应用》[ISSN:1009-0046/CN:62-1138/TQ]

期数:
2022年6期
页码:
383-386
栏目:
出版日期:
2022-11-10

文章信息/Info

Title:
Rheological and structural properties of different grades of LDPE resins
文章编号:
1009-0045(2022)06-0383-04
作者:
许惠芳1慕雪梅1魏福庆1邸麟婷1罗小城2张海毅2王多鹏3
1.中国石油石油化工研究院 兰州化工研究中心,甘肃 兰州 730060;2.中国石油兰州石化公司,甘肃 兰州 730060;3.中国石油华南化工销售公司,广东 广州 510630
Author(s):
XU Hui-fang1MU Xue-mei1WEI Fu-qing1DI Lin-ting1LUO Xiao-cheng2ZHANG Hai-yi2WANG Duo-peng3
1.Lanzhou Petrochemical Research Center, Petrochemical Research Institute, PetroChina, Lanzhou 730060,China;2.Lanzhou Petrochemical Company, PetroChina, Lanzhou 730060, China;3.SouthChina Chemicals Marketing Company,PetroChina, Guangzhou 510630,China
关键词:
低密度聚乙烯(LDPE)树脂流变性能结构性能储能模量损耗模量相对分子质量
Keywords:
low density polyethylene(LDPE)resinrheological propertiesstructure performancestorage modulusloss modulusrelative molecular mass
分类号:
TQ 325.12
DOI:
DOI:10.19909/j.cnki.ISSN1009-0045.2022.06.0383
文献标识码:
B
摘要:
采用旋转流变仪、毛细管流变仪、凝胶渗透色谱(GPC)仪及稳态流变下的模型拟合试验,测试分析、比较了3种牌号低密度聚乙烯(LDPE)树脂的流变性能和结构性能。结果表明:LDPE-1,LDPE-2和LDPE-3 这3种LDPE树脂的动态流变曲线形状极其相似,其储能模量、损耗模量均随扫描角频率的增加而增大;其在不同剪切速率下的毛细管试验流变行为相似,但相对分子质量最小的LDPE-3树脂加工性能最好,而相对分子质量最大的LDPE-1对剪切敏感;这3种LDPE树脂的动态流变扫描、毛细管流变试验,以及在稳态流变下使用Cross拟合模型拟合试验结果所推断得出的其相对分子质量及其分布排序,与其结构性能的GPC测试结果均呈良好的相关性。
Abstract:
The rheological and structural properties of3 grades of low density polyethylene(LDPE) resins were tested, analyzed and compared by means of rotary rheometer, capillary rheometer, gel permeation chromatography(GPC) and steady-state rheological model fitting test. The results showed that:the dynamic rheological curves of LDPE-1, LDPE-2 and LDPE-3 were very similar, and their storage modulus and loss modulus increased with the increase of scanning angular frequency. The capillary rheological behaviors of such 3 LDPE resins under the different shear rates were similar, but the processability of LDPE-3 resin with the smallest relative molecular mass was better, while LDPE-1 with the largest relative molecular mass was sensitive to shear. The dynamic rheological scanning and capillary rheological tests of such 3 LDPE resins, as well as the conclusion that the relative molecular mass ranking and the distribution width of such 3 LDPE resins were deduced by fitting the test results using the Cross model under the steady rheological state, which had good correlation with that of the GPC test results.

参考文献/References

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备注/Memo

备注/Memo:
中国石油炼油与化工分公司基金资助项目(项目编号:19-LH-28-01/02/05)
更新日期/Last Update: 2022-11-10