黄麻纤维经预氧化和炭化后制备出低成本炭纤维。采用差示扫描量热仪( DSC)研究黄麻纤维在空气和氩气中的热行为。采用傅立叶变换红外光谱仪( FTIR)、元素分析仪、X射线衍射仪( XRD)研究预氧化过程中黄麻纤维的化学结构和晶体结构,采用扫描电子显微镜( SEM)研究黄麻纤维的形貌变化。最佳的预氧化温度范围为250~340℃。在250℃黄麻纤维发生显著的氧化反应, C=O 官能团强度也达到最大值。同时,纤维素晶态结构消失并出现一新的环化结构。随着温度由250℃升高到340℃, C=O 官能团强度逐渐减弱而环化结构逐步发展。黄麻纤维基碳纤维(JBCFs)的拉伸强度与环化结构的特征峰值成正比,与 C=O 官能团强度无关。黄麻纤维基碳纤维(JBCFs)的最大拉伸强度达到(200.4±41.0) MPa。
Low-cost jute-based carbon fibers were fabricated by pre-oxidation and carbonization. The chemical, morphological and crystal structure of the jute fibers during pre-oxidation were investigated by Fourier transform infrared spectroscopy, differential scanning calorimetry, elemental analysis, X-ray diffraction and scanning electron microscopy. Results show that the optimum pre-oxidation temperature range is from 250 to 340℃. At 250℃, significant oxidation occurs, the amount of C=O functional groups reaches a maximum, the typical cellulose crystal structure disappears and a new aromatic structure appears. The C=O functional groups are gradually lost while an aromatic structure steadily develops with a further increase of temperature from 250 to 340℃. The tensile strength of the jute-based carbon fibers increases with increasing amount of the aromatic structure during pre-oxidation, rather than that of C=O groups. The highest tensile strength of the carbon fibers is (200.4±41.0) MPa.
参考文献
| [1] | 夏克东,吕春祥,杨禹.炭纤维表面SiC/SiO2抗氧化涂层的溶胶凝胶法制备[J].新型炭材料,2013(03):208-214. |
| [2] | H. Ku;H. Wang;N. Pattarachaiyakoop;M. Trada .A review on the tensile properties of natural fiber reinforced polymer composites[J].Composites, Part B. Engineering,2011(4):856-873. |
| [3] | Malkapuram R;Kumar V;Yuvraj S N .Recent development in natural fibre reinforced polypropylene composites[J].J Rein Plast Comp,2009,28(10):1169-1189. |
| [4] | Hajnalka H;Racz I;Anandjiwala R D .Development of hemp fi-bre reinforced polypropylene composites[J].J Thermoplast Com-pos,2008,21(02):165-174. |
| [5] | Donghwan Cho;Jin Myung Kim;In Seong Song;Ikpyo Hong .Effect of alkali pre-treatment of jute on the formation of jute-based carbon fibers[J].Materials Letters,2011(10):1492-1494. |
| [6] | Peng SJ.;Shao HL.;Hu XC. .Lyocell fibers as the precursor of carbon fibers[J].Journal of Applied Polymer Science,2003(7):1941-1947. |
| [7] | Müssig J.Industrial applications of natural fibres：Structure, properties and technical applications[M].John Wiley &Sons Ltd,2010:14-20. |
| [8] | Sudo K;Shimizu K .A new carbon fiber from lignin[J].Journal of Applied Polymer Science,1992,44(01):127-134. |
| [9] | Compere A L;Griffith W I .Preparation and Analysis of Biomass Lignins[J].Methods in Molecular Biology,2009,581:185-212. |
| [10] | Phan N H;Sebastien R;Catherine F et al.Production of fi-brous activated carbons from natural cellulose(jute,coconut)fibers for water treatment application[J].CARBON,2006,44(12):2569-2577. |
| [11] | Senthilkumaar S;Varadarajan PR;Porkodi K;Subbhuraam C .Adsorption of methylene blue onto jute fiber carbon: kinetics and equilibrium studies[J].Journal of Colloid and Interface Science,2005(1):78-82. |
| [12] | Basak R K;Saha S G;Sarkar A K et al.Thermal properties of jute constituents and flame retardant jute fabrics[J].Textile Research Journal,1993,63(11):658-666. |
| [13] | Norton FJ.;Mackinnon AJ.;Hall PJ.;Love GD. .MECHANISMS OF CHAR PRODUCTION FROM OXIDIZED CELLULOSE[J].Journal of Materials Science,1995(3):596-600. |
| [14] | Pastor A.C.;Rodriguez-Reinoso F.;Marsh H.;Martinez M.A. .Prepartion of activated carbon cloths from viscous rayon. Part I.Carbonization procedures[J].Carbon: An International Journal Sponsored by the American Carbon Society,1999(8):1275-1283. |
| [15] | Prafulla K S;Pradeep K R;Nandal D S et al.Characterization and properties of chemically modified corchorus capsularis jute fiber via pulping and grafting:Infrared,thermogravimetric analysis,differential scanning calorimetry,scanning electron microscopy,X-ray diffraction,Biodegradation,and superabor-bency[J].JOURNAL OF POLYMER SCIENCE PART A:POLYMER CHEMISTRY,2003,41(17):2696-2703. |
| [16] | Minxia Ji;Chengguo Wang;Yujun Bai .Structural Evolution of Polyacrylonitrile Precursor Fibers during Preoxidation and Carbonization[J].Polymer bulletin,2007(4):527-536. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%