衡友姣,钱鑫,陈礼群,李德宏
HENG You-jiao,QIAN Xin,CHEN Li-qun,LI De-hong

• 1:中国科学院宁波材料技术与工程研究所碳纤维制备技术国家工程实验室

摘要(Abstract)：

采用水煮法和回流法对聚丙烯腈(PAN)原丝中残留溶剂——二甲基亚砜(DMSO)进行萃取,研究了不同处理时间和方法对萃取结果的影响,并使用气相色谱仪对萃取物进行了定性分析。结果显示:回流处理80 min即可将PAN原丝中残留的DMSO萃取完全,而使用水煮法处理120 min也能达到相同的萃取效果。通过对比两种萃取物的气相色谱数据,发现两者主峰的DMSO峰形及出峰时间保持不变。采用水煮法可以实现对DMSO的萃取,虽耗时较长,但设备简单、易于控制、耗能少;使用回流法虽然耗时较短,但同时也存在设备复杂,易产生冷凝水浪费等缺点。
The remaining dimethyl sulfoxide(DMSO) in polyacrylonitrile(PAN) precursors was extracted byboiling water extraction and back-flow method.Effect of treating time and method on the extraction resultswas researched,and structural study of the extraction was conducted by gas chromatograph.Results showedthat DMSO was completely extracted within 80 minutes by boiling water extraction method and that byback-flow method was 120 minutes.Through the comparison of two kinds of extraction by gas chromato-graph,the main peak of DMSO and eluotropic time were almost the same.The extraction of DMSO by boil-ing water extraction method was time consuming process.However,the equipments were simple.The wholeprocess was easy to control and had less energy consumption.The treating time of back-flow method wasshort,but the equipments were complex and led to a waste of water.

关键词(KeyWords)： 聚丙烯腈原丝;二甲基亚砜;气相色谱;萃取
polyacrylonitrile precursor;dimethyl sulfoxide;gas chromatograph;extraction

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 衡友姣,钱鑫,陈礼群,李德宏
HENG You-jiao,QIAN Xin,CHEN Li-qun,LI De-hong

DOI: 10.16090/j.cnki.hcxw.2015.12.012

参考文献(References)：

• [1]Pillay S,Vaidya U K,Janowski G M.Effects of moisture and UV exposure on liquid molded carbon fabric reinforced nylon 6 composite laminates[J].Composites Science and Technology,2009,69(6):839-846.
• [2]Ray B C.Temperature effect during humid ageing on interfaces of glass and carbon fibers reinforced epoxy composites[J].Journal of Colloid and Interface Science,2006,98(1):111-117.
• [3]Zai B A,Park M K,Choi H S,et al.Effect of moisture absorption on damping and dynamic stiffness of c arbon fiber/epoxy composites[J].Journal of Mechanical Science and Technology,2009,23(11):2 998-3 004.
• [4]贺福.碳纤维及石墨纤维[M].北京:化学工业出版社,2010:133-135.
• [5]张丽平,李艳华,陈秋飞,等.聚丙烯腈原丝中二甲基亚砜残留对碳纤维性能的影响[J].合成纤维,2010,39(9):13-15.
• [6]贾玉亭,孙金峰,方静,等.DMSO残留溶剂对PAN原丝质量的影响[J].高科技纤维与应用,2013,38(5):17-19.
• [7]刘建军,王成国,陈娟,等.高效液相色谱法测定聚丙烯腈基碳纤维原丝中的二甲基亚砜残留[J].色谱,2007,25(2):284-285.