林产化学与工业2013，Vol.33Issue(1)：1-7,7.DOI:10.3969/j.issn.0253-2417.2013.01.001
异氰酸酯/硅烷偶联剂接枝改性杨木粉的制备及其表征
Preparation and Characterization of Graft Modified Poplar Wood Powder by 4,4′-Methylenebis (Phenyl Isocyanate) /γ-Aminopropyltriethoxysilane
摘要
Abstract
The poplar wood powder (PWP) was surface modified by 4,4'-methylenebis (phenyl isocyanate)/ γ-aminopropyltrie-thoxysilane(MDI/KH550) in N,N-dimethylformamide (DMF). The effects of material ratio, reaction temperature, reaction time and dosage of catalyst on the reaction were investigated. The chemical structure and surface properties of modified poplar wood powder were characterized by contact angle measurement, elemental analysis, FT-IR, 13C CP-MAS NMR and SEM. The results showed that the weight percent gain (W) of MDI/KH550 modified PWP increased by 40-60% when MDI reacted with PWP in molar ratio of 2:1 at 120 ℃ for 2 h, and the catalyst had no appreciable effect on the modification reaction. The hydrophobicity of modified PWP was improved.关键词
4,4′-亚甲基双(异氰酸苯酯)/γ-氨丙基三乙氧基硅烷/杨木粉/表面改性Key words
4,4'-methylenebis(phenyl isocyanate) /γ-aminopropyltriethoxysilane/poplar wood powder/surface modification分类
化学化工引用本文复制引用
陈健,孔振武,焦健,房桂干,吴国民,霍淑平..异氰酸酯/硅烷偶联剂接枝改性杨木粉的制备及其表征[J].林产化学与工业,2013,33(1):1-7,7.基金项目
国家林业局"948"引进项目(2008-4-77) （2008-4-77）
