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聚丙烯腈热稳定化纤维在碳化过程中的结构变化研究 被引量:3

Structure evolution of stabilized polyacrylonitrile fiber during carbonization
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摘要 为研究聚丙烯腈( PAN)热稳定化纤维在连续碳化过程中的结构和力学性能变化,于300~1300℃对PAN稳定化纤维进行热处理,然后采用傅里叶变换红外光谱(FTIR)分析仪、X射线衍射(XRD)仪、拉曼( Raman)光谱仪、元素分析仪及纤维强伸仪等表征了纤维的化学结构、微晶结构及拉伸强度。结果表明:当温度达到600℃时,纤维残余氰基消失,结构致密性增大,且强度略有增加;当温度升高到1000℃时,纤维氧含量大幅降低,纤维由梯形结构转变为碳平面结构,晶面堆叠、晶粒尺寸及石墨化程度缓慢增加,拉伸强度逐渐提高;当温度超过1000℃后,微晶结构进一步重排与完善,晶粒尺寸及堆叠层数出现较快增长,同时纤维拉伸强度出现较大提升,体密度先降低后升高。 The change of the structure and mechanical properties of stabilized polyacrylonitrile ( PAN) fiber was studied during the continuous carbonization .The stabilized PAN fiber was subjected to the thermal treatment at 300-1 300 ℃.The chemical structure, microcrystalline structure and tensile strength of the fiber were characterized by Fourier transform infrared spectrometry (FTIR), X-ray diffraction method ( XRD), Raman spectrometry ( Raman), elemental analysis and tensile test .The results showed that the residual cyano group disappeared in the fiber , the structure compactness of the fiber increased , and the strength slightly increased as the temperature reached 600 ℃;the oxygen content of the fiber considerbably decreased , the ladder struc-ture of the fiber transformed into carbon planar structure , the crystal face stacking occurred , the microcrystalline dimension and graphitization degree slowly increased and the tensile strength gradually increased while elevating the temperature to 1 000℃;the microcrystalline structure was further rearranged and perfected , the microcrystalline dimension and the stacking layers were rapid-ly increased , the tensile strength of the fiber was greatly increased , and the bulk density was decreased and then increased as the temperature exceeded 1 000 ℃.
出处 《合成纤维工业》 CAS 2016年第4期9-13,18,共6页 China Synthetic Fiber Industry
基金 国家自然科学基金(51503216) 浙江省自然科学基金(LQ16E030003) 国家重点基础研究发展计划(2011CB605602)
关键词 聚丙烯腈纤维 热稳定化纤维 碳化 碳纤维 化学结构 微晶结构 polyacrylonitrile fiber thermal stabilized fiber carbonization carbon fiber chemical structure microcrystalline structure
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  • 1Rahaman M S A, Ismail A F, Mustafa A. A review of heat treatment on polyacrylanitrile fiber [ J ]. Polym Degrad Stab, 2007, 92(8) : 1421 - 1432.
  • 2Frank E, Hermanutz F, Buchmeiser M R. Carbon fibers: pre-cursors, manufacturing, and properties [ J ]. Macromol Mater Eng, 2012, 297(6) : 493 -501.
  • 3王统帅,童元建,罗莎,昌志龙,徐樑华.低温碳化过程PAN氧化纤维骨架结构转变[J].材料科学与工艺,2011,19(6):133-137. 被引量:6
  • 4Pamula E, Rouxhet P G. Bulk and surface chemical function- alities of type II! PAN-based carbon fibres[ J]. Carbon, 2003, 41(107 : 1905 -1915.
  • 5刘钟铃,靳玉伟,徐樑华,童元建.热处理温度对PAN基碳纤维微观结构的影响[J].合成纤维工业,2010,33(3):1-4. 被引量:6
  • 6Liu Shuping, Han Keqing, Chen Lei, et al. Influence of exter- nal tension on the structure and properties of melt-spun PAN precursor fibers during thermal oxidation [ J ]. Macromol Mater Eng, 2015,300(10) : 1001 - 1009.
  • 7Setnescu R, Jipa S, Setnescu T, et al. IR and X-ray charac- terization of the ferromagnetic phase of pyrolysed polyacryloni- trile[J]. Carbon, 1999, 37(1) : 1 -6.
  • 8Zhang Wangxi, Liu Jie, Wu Gang. Evolution of structure and properties of PAN precursors during their conversion to carbon fibers[J]. Carbon, 2003, 41 (14) : 2805 -2812.
  • 9Ko T H. The influence of pyrolysis on physical properties and mierostructure of modified PAN fibers during carbonization [ J ]. J Appl Polym Sci, 1991, 43(3) : 589 -600.
  • 10孔令强,徐樑华,赵纯.PAN基碳纤维制备过程中热处理时间对结构影响的研究[J].高科技纤维与应用,2012,37(2):20-24. 被引量:3

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