SiO_2&Fe改性酚醛树脂的制备及性能研究
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摘要
采用原位改性技术,将纳米二氧化硅(SiO_2)及其铁(Fe)的复合纳米粒子对酚醛树脂进行了改性处理,通过改变纳米SiO_2和Fe的质量配合比等实验条件制得改性酚醛树脂。对改性酚醛树脂的微观结构进行全面分析,对改性酚醛树脂的游离醛和固含量等性质做了详尽的研究,得到了综合性能最佳的改性酚醛树脂。结果表明,当纳米SiO_2与Fe质量配合比为1∶1.5时,改性树脂的游离醛为7.294%,固含量为74.26%;通过微观结构分析发现,纳米粒子均匀的分散在树脂中,酚醛树脂通过化学键键合在纳米粒子表面,达到了增强复合材料界面键合力的目的。
Using situ composite technology with adding nano iron and silica to modificating phenolic resin,modified phenolic resin was prepared by changed the ratio of silica and iron.Conducted a comprehensive test of the microstructure of modified phenolic resin and doing a detailed study of free aldehyde and solid content of modified phenol resin,the best performance was got through comparison and analysis.Results showed that it had lower free formaldehyde and higher solid content compared with the rest of modified phenolic resin,when the rate of silica and iron was 1∶1.5,including free aldehyde 7.294%and solid content 74.26%.Through the analysis of its microscopic structure,nanoparticles uniformly dispersed in the resin were found.The phenolic resin was chemically bonded to the surface of nanoparticles and the resin cannot be removed from the nanoparticles surface even repeated washing reinforcing the interface bonding force of composite.
Using situ composite technology with adding nano iron and silica to modificating phenolic resin,modified phenolic resin was prepared by changed the ratio of silica and iron.Conducted a comprehensive test of the microstructure of modified phenolic resin and doing a detailed study of free aldehyde and solid content of modified phenol resin,the best performance was got through comparison and analysis.Results showed that it had lower free formaldehyde and higher solid content compared with the rest of modified phenolic resin,when the rate of silica and iron was 1∶1.5,including free aldehyde 7.294%and solid content 74.26%.Through the analysis of its microscopic structure,nanoparticles uniformly dispersed in the resin were found.The phenolic resin was chemically bonded to the surface of nanoparticles and the resin cannot be removed from the nanoparticles surface even repeated washing reinforcing the interface bonding force of composite.
引文
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[3]苏志强,刘云芳,魏强,等.碳纳米管改性酚醛树脂的研究[J].碳素技术,2002,23(1):8-11.
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[5]Hernndez-Padrón G,Rojas F,Casta1o V.Development and testing of anticorrosive SiO2/phenolic-formaldehydic resin coatings[J].Surf&Coat.Technol,2006,201(3/4):1207-1214.
[6]Song H J,Zhang Z Z.Study on the tribological behaviors of the phenolic composite coating filled with modified nano-TiO2[J].Tribology International,2008,41(5):396-403.
[7]吕伟,陈登龙,候有德.环保型脲醛树脂的制备工艺研究[J].化学工程与制备,2011,6(12):15-18.
[8]孙中心,王雷,李东风.酚醛泡沫塑料制备和性能研究[J].塑料工业,2007,3(8):46-49.
[9]王志才,白培康.酚醛泡沫及其复合材料的研究与应用进展[J].工程塑料应用,2011,39(5):106-108.
[10]罗朝霞.高性能酚醛泡沫塑料的合成与制备研究[D].北京:北京化工大学,2007.
[11]张洋.酚醛树脂的现状与进展[J].热固性树脂,2005,20(4):1-3.
[12]殷宜初.国内外酚醛泡沫的开发与应用[J].新型建筑材料,2004,31(10):46-48.
[13]华杰.甲阶酚醛树脂的制备工艺研究[D].哈尔滨:哈尔滨工业大学,2006.
[14]王成发.铁/碳纳米复合材料的制备和性能研究[D].上海:上海交通大学,2007.