氧化铝纤维的泡沫成形技术研究

Research on Foam Forming Technology of Alumina Fiber

关键词:  氧化铝纤维  纤维长度  纤维含量  泡沫成形  纸张匀度

Key Words:alumina fiber  fiber length  fiber content  foam forming  paper sheet evenness

摘要:本研究采用泡沫成形技术制备了密度低且匀度优异的氧化铝纤维纸，重点研究了氧化铝纤维泡沫浆料体系的构建及氧化铝纤维长度及含量对泡沫特性、成纸匀度的影响。结果表明，聚氧化乙烯（PEO）与双子季铵盐（GS）组合下的泡沫浆料体系可对氧化铝纤维进行有效分散，成形后纸张匀度最佳；与湿法成形相比，采用泡沫成形技术有利于氧化铝纤维的分散，同时提高纤维含量。当纤维含量0.2%时，长度为36 mm的氧化铝纤维泡沫成形纸张的匀度指数为109，较6 mm氧化铝纤维湿法成形纸张的匀度指数（187）降低了42%。当氧化铝纤维含量为1.2%时，其泡沫成形纸张的匀度指数为105，较含量0.2%下的湿法成形纸张的匀度指数（187）降低了44%。

Abstract:In this study， alumina fiber paper with low density and excellent evenness was made by foam forming technology， and the construction of alumina fiber foam slurry system and the effects of alumina fiber length and content on foam characteristics and paper sheet evenness were focused. The results showed that the foam slurry system under the combination of polyethylene oxide （PEO） and gemini quaternary ammonium salt （GS） could effectively disperse alumina fiber， and the evenness of the paper sheet after forming was the best. Compared with wet forming， the use of foam forming technology was conducive to the dispersion of alumina fiber， while increasing the fiber content. When the fiber content was 0.2%， the evenness index of the alumina fiber foamed sheet with a fiber length of 36 mm was 109， which was 42% lower than that of the 6 mm alumina fiber wet-formed paper sheet （187）. When the content of alumina fibers was 1.2%， the evenness index of foam-formed paper sheet was 105， which was 44% lower than that of wet-formed paper sheet （187） with 0.2% fiber content.