纳米金刚石改性LLDPE的非等温结晶动力学

采用X射线衍射(XRD)、偏光显微镜(POM)以及差示扫描量热(DSC)法,考察了纳米金刚石(Nano-diamond)对线型低密度聚乙烯(LLDPE)的结晶形态以及非等温结晶行为的影响。通过Jeziorny法和莫志深法研究了复合材料的非等温结晶动力学,并利用Kissinger方程计算了LLDPE/Nano-diamond复合材料的非等温结晶活化能。结果表明:Nano-diamond是一种有效的成核剂,为LLDPE结晶提供了更多的活化晶核,起到了异相成核的作用,既提高了LLDPE的结晶起始温度To、结晶峰值温度Tp和结晶速率,又降低了球晶的尺寸,使得球晶的分布更为均匀致密;添加Nano-dia...

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Published in航空材料学报 Vol. 34; no. 5; pp. 55 - 62
Main Author 曹新鑫 罗四海 王优 何小芳
Format Journal Article
LanguageChinese
Published 河南理工大学材料科学与工程学院,河南焦作,454000 2014
Subjects
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ISSN1005-5053
DOI10.11868/j.issn.1005-5053.2014.5.009

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Abstract 采用X射线衍射(XRD)、偏光显微镜(POM)以及差示扫描量热(DSC)法,考察了纳米金刚石(Nano-diamond)对线型低密度聚乙烯(LLDPE)的结晶形态以及非等温结晶行为的影响。通过Jeziorny法和莫志深法研究了复合材料的非等温结晶动力学,并利用Kissinger方程计算了LLDPE/Nano-diamond复合材料的非等温结晶活化能。结果表明:Nano-diamond是一种有效的成核剂,为LLDPE结晶提供了更多的活化晶核,起到了异相成核的作用,既提高了LLDPE的结晶起始温度To、结晶峰值温度Tp和结晶速率,又降低了球晶的尺寸,使得球晶的分布更为均匀致密;添加Nano-diamond使得复合材料的结晶迁移活化能降低,当Nano-diamond含量为1%时,复合材料结晶活化能达到最小值。
AbstractList TQ320.1%TQ315.14; 采用X射线衍射(XRD)、偏光显微镜(POM)以及差示扫描量热(DSC)法,考察了纳米金刚石(Nano-diamond)对线型低密度聚乙烯(LLDPE)的结晶形态以及非等温结晶行为的影响.通过Jeziorny法和莫志深法研究了复合材料的非等温结晶动力学,并利用Kissinger方程计算了LLDPE/ Nano-diamond复合材料的非等温结晶活化能.结果表明:Nano-diamond是一种有效的成核剂,为LLDPE结晶提供了更多的活化晶核,起到了异相成核的作用,既提高了LLDPE的结晶起始温度T.、结晶峰值温度Tp和结晶速率,又降低了球晶的尺寸,使得球晶的分布更为均匀致密;添加Nano-diamond使得复合材料的结晶迁移活化能降低,当Nano-diamond含量为1%时,复合材料结晶活化能达到最小值.
采用X射线衍射(XRD)、偏光显微镜(POM)以及差示扫描量热(DSC)法,考察了纳米金刚石(Nano-diamond)对线型低密度聚乙烯(LLDPE)的结晶形态以及非等温结晶行为的影响。通过Jeziorny法和莫志深法研究了复合材料的非等温结晶动力学,并利用Kissinger方程计算了LLDPE/Nano-diamond复合材料的非等温结晶活化能。结果表明:Nano-diamond是一种有效的成核剂,为LLDPE结晶提供了更多的活化晶核,起到了异相成核的作用,既提高了LLDPE的结晶起始温度To、结晶峰值温度Tp和结晶速率,又降低了球晶的尺寸,使得球晶的分布更为均匀致密;添加Nano-diamond使得复合材料的结晶迁移活化能降低,当Nano-diamond含量为1%时,复合材料结晶活化能达到最小值。
Author 曹新鑫 罗四海 王优 何小芳
AuthorAffiliation 河南理工大学材料科学与工程学院,河南焦作454000
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Author_FL LUO Si-hai
HE Xiao-fang
CAO Xin-xin
WANG You
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DocumentTitleAlternate Nonisothermal Crystallization Kinetics of Polypropylene Nano-diamond as Fillers
DocumentTitle_FL Nonisothermal Crystallization Kinetics of Polypropylene Nano-diamond as Fillers
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Issue 5
Keywords 非等温结晶
composites
nucleating agent
纳米金刚石
Nano-diamond
成核剂
复合材料
linear low density polyethylene
线型低密度聚乙烯
non-isothermal crystallization
Language Chinese
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Notes CAO Xin-xin, LUO Si-hai, WANG You, HE Xiao-fang ( School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, Henan China)
linear low density polyethylene; Nano-diamond ; non-isothermal crystallization ; nucleating agent; composites
11-3159/V
Effeets of Nano-diamond composites on the crystal morphology and non-isothermal crystallization of linear low density polyethylene (LLLDPE) were investigated by XRD, polarization microscope(POM) and differential scanning calorimetry(DSC). The Jeziorny and Mo methods were applied to the analysis of the non-isothermal crystallization kinetics of LLDPE and LLDPE/ Nano-diamond composites, and the activation energy (AE) based on Kissinger method was evaluated. The results show that Nano-diamond is an ef- fective nucleating agent, provides more activated nuclei for the crystallization of LLDPE, plays a role in heterogeneous nucleation, and enhances crystallization onset temperature( To ) , crystallization peak temperature( Tp ) and crystallization r
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PublicationTitle 航空材料学报
PublicationTitleAlternate Journal of Aeronautical Materials
PublicationTitle_FL Journal of Aeronautical Materials
PublicationYear 2014
Publisher 河南理工大学材料科学与工程学院,河南焦作,454000
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Snippet 采用X射线衍射(XRD)、偏光显微镜(POM)以及差示扫描量热(DSC)法,考察了纳米金刚石(Nano-diamond)对线型低密度聚乙烯(LLDPE)的结晶形态以及非等温结晶行为的影响。...
TQ320.1%TQ315.14; 采用X射线衍射(XRD)、偏光显微镜(POM)以及差示扫描量热(DSC)法,考察了纳米金刚石(Nano-diamond)对线型低密度聚乙烯(LLDPE)的结晶形态以及非等温结晶行为...
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SubjectTerms 复合材料
成核剂
纳米金刚石
线型低密度聚乙烯
非等温结晶
Title 纳米金刚石改性LLDPE的非等温结晶动力学
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