| 双峰高密度聚乙烯管材分子量测定 |
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| 引用本文： | 王喆,雷兵,孙枫,赖文群.双峰高密度聚乙烯管材分子量测定[J].分析仪器,2012(4):33-36. |
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| 作者姓名： | 王喆 雷兵 孙枫 赖文群 |
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| 作者单位： | 中油股份独山子石化分公司研究院原油评价及石化产品检测中心,独山子,833600 |
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| 摘 要： | 双峰高密度聚乙烯(BHDPE)管材一般采用两段淤浆法工艺合成,是一种具有双峰结构的高密度聚乙烯,其结构复杂表征困难。本文采用高温凝胶色谱,用窄分布聚苯乙烯标样进行普适校准,直接测定HDPE管材的分子量及其分布,并采用分峰拟合软件,对这种具有双峰结构的材料进行分峰拟合处理,得出两种不同大小分子量聚乙烯的含量之比。
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| 关 键 词： | 高温凝胶色谱 双峰高密度聚管材 分子量 双峰结构 分峰拟合 |
Determination of molecular weigh of bimodal high-density polyethylene tube |
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| Wang Zhe
,
Lei Bing
,
Sun Feng
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Lai Wenqun.Determination of molecular weigh of bimodal high-density polyethylene tube[J].Analytical Instrumentation,2012(4):33-36. |
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| Authors: | Wang Zhe Lei Bing Sun Feng Lai Wenqun |
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| Affiliation: | ( PetroChina Dushanzi , Dushanzi 833600, China) |
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| Abstract: | Bimodal high-density polyethylene （BHDPE） tube polymerlzed by double para- graphs silting plasma technology is a kind of bimodal High-density polyethylene. Its complex structure characterizes difficultily. In this paper, direct determination of determining molecular weight and distribution of HDPE tube by high-temperature gel permeation chromatography, which use universal calibration by polystyrene standard samples with narrow distribution. And processing bimodal high-density polyethylene by sub-peak fitting software, and obtained two dif- ferent molecular weight polyethylene content of the size ratio. |
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| Keywords: | high0temperature gel permeation chromatograph BHDPE tu molecular weight bimodal sub-peak fitting |
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