| Fe^2＋／H2O2催化氧化脲醛树脂胶中游离甲醛及其对性能的影响 |
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| 引用本文： | 刘明,郭丽萍,吕锐,李艳景,杜小弟,雷家珩.Fe^2＋／H2O2催化氧化脲醛树脂胶中游离甲醛及其对性能的影响[J].化学建材,2009,25(1):34-35,46. |
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| 作者姓名： | 刘明 郭丽萍 吕锐 李艳景 杜小弟 雷家珩 |
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| 作者单位： | 武汉理工大学,理学院,化学系,武汉,430070
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| 摘 要： | 采用Fe^2＋／H2O2催化氧化法消除脲醛树脂胶中的游离甲醛，其最佳条件为室温25-40℃，H2O2与甲醛摩尔比约为1：1，Fe^2＋为H2O2摩尔量的1／70-1／60，反应时间为40min。在此条件下，脲醛树脂胶中残余甲醛含量基本达到GB，T14732-2006标准。该方法不影响脲醛树脂胶的胶合强度，但影响脲醛树脂胶的贮存稳定性，适合在脲醛树脂胶使用前3-5天内使用。
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| 关 键 词： | 脲醛树脂胶 游离甲醛 催化氧化 H2O2 |
Removing Free Formaldehyde From Urea-Formaldehyde Resin Adhesive By Means of Fe~(2+)/H_2O_2 Catalytic Oxidation and Its Effects on Performance of the Adhesive |
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| Liu Ming et alWuhan University of Science , Engineering.Removing Free Formaldehyde From Urea-Formaldehyde Resin Adhesive By Means of Fe~(2+)/H_2O_2 Catalytic Oxidation and Its Effects on Performance of the Adhesive[J].Chemical Materials for Construction,2009,25(1):34-35,46. |
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| Authors: | Liu Ming Wuhan University of Science Engineering |
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| Affiliation: | Liu Ming et al(Wuhan University of Science and Engineering) |
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| Abstract: | The optimum conditions for removing free formaldehyde from urea formaldehyde resin adhesive by means of Fe^2＋/H2O2 catalytic oxidation were as follows： room temperature at 25℃-40℃, molar ratio of H2O2 to formaldehyde about 1：1, molar weight of Fe^2＋ accounting for 1/70-1/60 of H2O2, reaction time for 40 min. Under the above-mentioned conditions, free formaldehyde residue in urea-formaldehyde resin adhesive basically reached GB Standard/T 14732-2006. This method would not affect scuffing strength of the adhesive, but did influence its storage stability therefore it suited to be used 3-5 days before application of the adhesive. |
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| Keywords: | H2O2 |
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