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[1]李延a,钟名丽a,辛明东b,等.近红外光谱结合偏最小二乘回归法快速无损测定高密度聚乙烯的熔体流动速率[J].石化技术与应用,2024,6:469-472.
 LI Yana,ZHONG Ming-lia,XIN Ming-dongb,et al.Rapid nondestructive testing of melting flow rate of high-density polyethylene by near-infrared spectroscopy and partial least squares regression method[J].Petrochemical technology & application,2024,6:469-472.
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近红外光谱结合偏最小二乘回归法快速无损测定高密度聚乙烯的熔体流动速率(PDF)

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

期数:
2024年6期
页码:
469-472
栏目:
出版日期:
2024-11-10

文章信息/Info

Title:
Rapid nondestructive testing of melting flow rate of high-density polyethylene by near-infrared spectroscopy and partial least squares regression method
文章编号:
1009-0045(2024)06-0469-04
作者:
李延a钟名丽a辛明东b翟德宏b崔嘉敏a张建平a李玮b赵秀娟b
中国石油兰州石化公司 a.研究院,甘肃 兰州 730060; b.榆林化工有限公司,陕西 榆林 719111
Author(s):
LI YanaZHONG Ming-liaXIN Ming-dongbZHAI De-hongbCUI Jia-minaZHANG Jian-pingaLI WeibZHAO Xiu-juanb
a. Research Institute,Lanzhou 730060; b. Yulin Chemical Co Ltd,Yulin 719111, Lanzhou Petrochemical Company,PetroChina,China
关键词:
高密度聚乙烯熔体流动速率近红外光谱定量分析模型快速无损检测偏最小二乘回归法
Keywords:
high density polyethylenemelt flow ratenear-infrared spectroscopyquantitative analysis modelrapid nondestructive testingpartial least squares regression method
分类号:
TQ 325.1+2;O 657. 3
DOI:
10.19909/j.cnki.ISSN1009-0045.2024.06.0469
文献标识码:
B
摘要:
选择使用多元散射校正(MSC)、一阶导数(D 1)、二阶导数(D 2)、卷积平滑(Savitzky-Golay)等方式对3个牌号高密度聚乙烯(HDPE)粉料样本的近红外光谱进行预处理,使其经预处理后的近红外光谱与相应牌号熔体流动速率(MFR)之间的关联性良好;然后,采用偏最小二乘回归法拟合,建立相应匹配HDPE牌号的MFR定量分析模型,旨在实现快速无损检测。结果表明:上述近红外光谱结合偏最小二乘回归法所建立的匹配于相应3种HDPE粉料的MFR定量分析模型的测试结果均具有很好的复现性,牌号1、牌号2、牌号3的MFR标准偏差依次为0.015 8,0.014 7,0.000 6 g/min,而且该方法快速测定得到的MFR与GB/T 3682.2—2018标准方法测定的均相近。
Abstract:
Methods such as multiple scattering correction (MSC), first derivative(D1), second derivative(D2),and convolution smoothing (Savitzky-Golay) were chosen to preprocess the near-infrared(NIR) spectra of three grades of high-density polyethylene (HDPE) powder samples, so that the correlation between the preprocessed NIR spectra and the melt flow rate (MFR) of the corresponding HDPE grade was good. Then, the MFR quantitative analysis model matching HDPE grade was established by coupling with partial least squares regression(PLSR)method to achieve rapid nondestructive testing. The results indicated that the test results from above corresponding MFR quantitative analysis models matching above three grades of HDPE powders established by NIR spectroscopy coupling with PLSR method had good reproducibility, and MFR standard deviation of HDPE Grade 1, Grade 2 and Grade 3 was 0.015 8,0.014 7,0.000 6 g/min, respectively. Moreover, the MFR obtained by such rapid testing were similar to those determined by GB/T 3682.2—2018 standard method.

参考文献/References

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备注/Memo

备注/Memo:
中国石油兰州石化公司资助项目(项目编号: LZSH 202221)
更新日期/Last Update: 2024-11-10