功能材料
功能材料
공능재료
JOURNAL OF FUNCTIONAL MATERIALS
2014年
13期
13082-13086
,共5页
李磊%康卫民%程博闻%赵义侠%庄旭品
李磊%康衛民%程博聞%趙義俠%莊旭品
리뢰%강위민%정박문%조의협%장욱품
氧化铝纤维%溶胶-凝胶法%溶液喷射法%热处理
氧化鋁纖維%溶膠-凝膠法%溶液噴射法%熱處理
양화려섬유%용효-응효법%용액분사법%열처리
alumina fiber%sol-gel%solution-blowing%thermal treatment
结合溶胶-凝胶法及溶液喷射成形方法,制备得到氧化铝初生纤维,经高温煅烧处理,得到氧化铝纤维,对其进行了热性能(TGA)分析及 X射线偏光衍射(XRD)分析.结果表明,纺丝液粘度对初生纤维形貌及直径分布影响较大,当溶液粘度为3.10 Pa?s时,得到的纤维直径分布比较均匀,平均直径为17.76μm,纤维渣球含量少;500℃低温煅烧后,纤维表面光滑,纤维直径较粗,900℃煅烧后,纤维表面出现裂纹等缺陷,纤维直径明显减小,1100℃煅烧后,纤维缺陷仍然存在;初生纤维升温至600℃以上后,有机溶剂挥发完全;经1100℃高温煅烧后,可得到γ-Al2 O3纤维.
結閤溶膠-凝膠法及溶液噴射成形方法,製備得到氧化鋁初生纖維,經高溫煅燒處理,得到氧化鋁纖維,對其進行瞭熱性能(TGA)分析及 X射線偏光衍射(XRD)分析.結果錶明,紡絲液粘度對初生纖維形貌及直徑分佈影響較大,噹溶液粘度為3.10 Pa?s時,得到的纖維直徑分佈比較均勻,平均直徑為17.76μm,纖維渣毬含量少;500℃低溫煅燒後,纖維錶麵光滑,纖維直徑較粗,900℃煅燒後,纖維錶麵齣現裂紋等缺陷,纖維直徑明顯減小,1100℃煅燒後,纖維缺陷仍然存在;初生纖維升溫至600℃以上後,有機溶劑揮髮完全;經1100℃高溫煅燒後,可得到γ-Al2 O3纖維.
결합용효-응효법급용액분사성형방법,제비득도양화려초생섬유,경고온단소처리,득도양화려섬유,대기진행료열성능(TGA)분석급 X사선편광연사(XRD)분석.결과표명,방사액점도대초생섬유형모급직경분포영향교대,당용액점도위3.10 Pa?s시,득도적섬유직경분포비교균균,평균직경위17.76μm,섬유사구함량소;500℃저온단소후,섬유표면광활,섬유직경교조,900℃단소후,섬유표면출현렬문등결함,섬유직경명현감소,1100℃단소후,섬유결함잉연존재;초생섬유승온지600℃이상후,유궤용제휘발완전;경1100℃고온단소후,가득도γ-Al2 O3섬유.
Sol-gel and solution blowing techniques were incorporated to produce the as-spun alumina fiber fol-lowed by calcination.The resulting fibers were characterized using optical microscope,TGA and XRD.The re-sults indicate that sol-gel solution viscosity plays the major role in as-spun fiber morphology and fiber diameter distribution.The as-spun fibers with a uniform diameter can be obtained when the solution viscosity was 3.10 Pa?s and the average diameter was 17.76μm.During the thermal treated process,the surfaces of the fi-bers are smooth with the low sintered temperature,whereas the temperature up to 900 ℃,the fibers become more fine and the surfaces was coarsen until 1 100 ℃.It can be found that the organic ingredients pyrolysis com-pletely at 600 ℃.Finally,the resulting fibers withγphase were obtained after 1 100 ℃ sintered treatment.