| 超声预处理聚丙烯腈原丝及预氧化的变化规律 |
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| 引用本文： | 葛宝,王源升,石继梅,袁慧五,任小孟. 超声预处理聚丙烯腈原丝及预氧化的变化规律[J]. 武汉理工大学学报, 2011, 0(3) |
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| 作者姓名： | 葛宝 王源升 石继梅 袁慧五 任小孟 |
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| 作者单位： | 高分子材料工程国家重点实验室(四川大学);海军工程大学化学与材料系; |
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| 基金项目： | 国家自然科学基金(51073098); 高分子材料工程国家重点实验室(四川大学)开放课题(KF200901) |
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| 摘 要： | 为了研究超声预处理对聚丙烯腈(PAN)原丝及其预氧化的影响规律,利用差热扫描量热仪(DSC)、傅里叶转变红外光谱(FT-IR)、广角X射线衍射(XRD)研究PAN原丝预氧化过程中的热性能、结构转变和微晶尺寸。结果表明,超声预处理后的PAN原丝预氧化起始反应温度降低,放热范围增大;超声预处理后的PAN原丝可以在更低的预氧化温度下形成耐热的梯形结构;超声预处理后的PAN原丝的微晶尺寸由10.39 nm增大到11.18 nm。
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| 关 键 词： | 聚丙烯腈原丝 超声 预氧化 放热反应 微晶尺寸 |
Regulation of Ultrasonic on PAN Precursor Fibers and Pre-oxidation |
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| GE Bao,WANG Yuan-sheng,SHI Ji-mei,YUAN Hui-wu,REN Xiao-meng. Regulation of Ultrasonic on PAN Precursor Fibers and Pre-oxidation[J]. Journal of Wuhan University of Technology, 2011, 0(3) |
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| Authors: | GE Bao WANG Yuan-sheng SHI Ji-mei YUAN Hui-wu REN Xiao-meng |
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| Affiliation: | GE Bao1,WANG Yuan-sheng1,2,SHI Ji-mei1,YUAN Hui-wu2,REN Xiao-meng2(1.State Key Laboratory of Polymer Material Engineering,Polymer Research Institute of Sichuan University,Chengdu 610065,China,2.Department of Chemistry and Material,Naval University of Engineering,Wuhan 430033,China) |
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| Abstract: | In order to research the regulation of ultrasonic on PAN precursor fibers and pre-oxidation.Differential scanning calorimetry(DSC),Fourier transform infrared spectrometry(FT-IR) and wide angle X-ray diffraction(XRD) were used to study the thermal properties,structural change and microcrystal size in pre-oxidated fibers.These results show that,the initial reaction temperature of PAN precursor fibers with ultrasonic treated become lower and the exothermal extent's expanded.The heat-resistant trapezoid structu... |
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| Keywords: | PAN precursor fibers ultrasonic pre-oxidation exothermal reaction microcrystallite size |
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