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通过溶胶-凝胶法,以正硅酸乙酯(TEOS)为硅源、乙醇为溶剂、盐酸为催化剂,在剑麻纤维素微晶(SFCM)表面包覆上了一层连续、致密的二氧化硅(SiO2),制得二氧化硅包覆剑麻纤维素微晶(SiO2-SFCM).采用红外光谱和扫描电子显微镜对其结构进行表征,并与环氧树脂(EP)复合制备了SiO-SFCM/EP复合材料,研究了SiO2-SFCM对EP复合材料力学性能的影响.结果表明,SiO2包覆层增强了SFCM与EP之间的界面相互作用,提高了复合材料的力学和热性能.当加入的SiO2-SFCM的质量分数为3%时,复合材料的冲击强度由未改性的16.4 kJ/m2提高到29.4 kJ/m2,热分解温度提高24℃,二氧化硅的包覆率为50% ~60%.

参考文献

[1] Donglin Han;Lifeng Yan;Wufeng Chen .Cellulose/graphite oxide composite films with improved mechanical properties over a wide range of temperature[J].Carbohydrate Polymers: Scientific and Technological Aspects of Industrially Important Polysaccharides,2011(2):966-972.
[2] 赵瑾朝,杜飞鹏,崔伟,周兴平,解孝林.聚氨酯/二氧化硅包覆多壁碳纳米管复合材料的导热与电绝缘性能[J].高分子材料科学与工程,2012(03):104-106,110.
[3] de Rodriguez NLG;Thielemans W;Dufresne A .Sisal cellulose whiskers reinforced polyvinyl acetate nanocomposites[J].Cellulose,2006(3):261-270.
[4] Kongliang Xie;Yuyan Wang;Lei Xu .Modification of cellulose with reactive polyhedral oligomeric silsesquioxane and nano-crosslinking effect on color properties of dyed cellulose materials[J].Carbohydrate Polymers: Scientific and Technological Aspects of Industrially Important Polysaccharides,2010(2):480-484.
[5] Agblevor FA;Ibrahim MM;El-Zawawy WK .Coupled acid and enzyme mediated production of microcrystalline cellulose from corn cob and cotton gin waste[J].Cellulose,2007(3):247-256.
[6] Shojaie SS.;Kelley SS.;Rials TG. .PREPARATION AND CHARACTERIZATION OF CELLULOSE ACETATE ORGANIC INORGANIC HYBRID FILMS[J].Journal of Applied Polymer Science,1995(8):1263-1274.
[7] Tshabalala MA.;Kingshott P.;VanLandingham MR.;Plackett D. .Surface chemistry and moisture sorption properties of wood coated with multifunctional alkoxysilanes by sol-gel process[J].Journal of Applied Polymer Science,2003(12):2828-2841.
[8] 高正楠,江小波,郭锴.KH550的水解工艺及其对SiO2表面改性的研究[J].北京化工大学学报(自然科学版),2012(02):7-12.
[9] Sequeira, S;Evtuguin, DV;Portugal, I;Esculcas, AP .Synthesis and characterisation of cellulose/silica hybrids obtained by heteropoly acid catalysed sol-gel process[J].Materials science & engineering. C, Biomimetic and supramolecular systems,2007(1):172-179.
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