功能材料
功能材料
공능재료
JOURNAL OF FUNCTIONAL MATERIALS
2010年
1期
155-158
,共4页
王启芬%王成国%于美杰%马婕%赵亚奇%胡秀颖%朱波%王延相
王啟芬%王成國%于美傑%馬婕%趙亞奇%鬍秀穎%硃波%王延相
왕계분%왕성국%우미걸%마첩%조아기%호수영%주파%왕연상
超声蚀刻%聚丙烯腈纤维%原纤%组织结构%性能
超聲蝕刻%聚丙烯腈纖維%原纖%組織結構%性能
초성식각%취병희정섬유%원섬%조직결구%성능
ultrasonic etching%polyacrylonitrile fibers%fibrils%structure%properties
用傅里叶红外光谱(FTIR)、广角X射线衍射(WAXD)、扫描电镜(SEM)等方法测定并分析超声蚀刻对聚丙烯腈(PAN)纤维的化学结构、结晶、形态结构和机械性能的影响,为利用超声蚀刻方法制备电镜样品、研究PAN纤维结构奠定实验基础.实验结果表明:超声蚀刻处理对PAN纤维化学结构没有影响;溶解的PAN分子量随着超声时间延长而降低,未溶解的PAN分子量基本没有变化;这种处理会使纤维的结晶度和晶粒尺寸均小幅下降;经过超声蚀刻后纤维表面出现大量的原纤结构,能够实现原纤分离;这种处理对纤维的线密度影响不大,而纤维强度、断裂伸长率和初始模量均有所下降.
用傅裏葉紅外光譜(FTIR)、廣角X射線衍射(WAXD)、掃描電鏡(SEM)等方法測定併分析超聲蝕刻對聚丙烯腈(PAN)纖維的化學結構、結晶、形態結構和機械性能的影響,為利用超聲蝕刻方法製備電鏡樣品、研究PAN纖維結構奠定實驗基礎.實驗結果錶明:超聲蝕刻處理對PAN纖維化學結構沒有影響;溶解的PAN分子量隨著超聲時間延長而降低,未溶解的PAN分子量基本沒有變化;這種處理會使纖維的結晶度和晶粒呎吋均小幅下降;經過超聲蝕刻後纖維錶麵齣現大量的原纖結構,能夠實現原纖分離;這種處理對纖維的線密度影響不大,而纖維彊度、斷裂伸長率和初始模量均有所下降.
용부리협홍외광보(FTIR)、엄각X사선연사(WAXD)、소묘전경(SEM)등방법측정병분석초성식각대취병희정(PAN)섬유적화학결구、결정、형태결구화궤계성능적영향,위이용초성식각방법제비전경양품、연구PAN섬유결구전정실험기출.실험결과표명:초성식각처리대PAN섬유화학결구몰유영향;용해적PAN분자량수착초성시간연장이강저,미용해적PAN분자량기본몰유변화;저충처리회사섬유적결정도화정립척촌균소폭하강;경과초성식각후섬유표면출현대량적원섬결구,능구실현원섬분리;저충처리대섬유적선밀도영향불대,이섬유강도、단렬신장솔화초시모량균유소하강.
The effects of ultrasonic etching treatment on the chemical construction,crystalline morphology,morphology and mechanical properties of polyacrylonitrile (PAN) fibers were investigated by FTIR,WAXD,SEM and etc.with providing the experiment proof for the preparation of electron microscope sample by ultrasonic etching and the research of PAN fibers structure.The experimental result indicated:ultrasonic etching had no effect on chemical construction of PAN fibers.Molecular weight of dissolved PAN decreased with the time,while molecular weight of undissolved PAN did not change.The crystallinity and crystal grains reduced slightly after ultrasonic etching.The fibrils appeared on the fiber surface by ultrasonic etching.Ultrasonic etching had little effect on linear density of PAN fibers,but the breaking strength,the breaking extension and initial modulus all decreased.