| 两次碱一次回流法合成水溶性酚醛树脂胶粘剂 |
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| 引用本文： | 周太炎,杜郢,王哲,左学明,徐振宇.两次碱一次回流法合成水溶性酚醛树脂胶粘剂[J].涂料工业,2012,42(2):71-74. |
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| 作者姓名： | 周太炎 杜郢 王哲 左学明 徐振宇 |
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| 作者单位： | 1. 常州大学石油化工学院,江苏常州,213164
2. 华东科技股份有限公司,合肥,230000 |
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| 摘 要： | 采用两次碱一次回流法合成工艺代替一次法和两次碱法制备酚醛树脂胶黏剂,通过对酚醛比、反应时间、反应温度、回流时间等反应条件的考察得出:以n(苯酚):n(甲醛)=1:2的比例,在70℃下反应40 min,80℃下反应20 min后升温回流反应45 min得到具有交联结构的酚醛树脂胶黏剂,产品相对分子质量及黏度适中,拉伸剪切强度可达到5 MPa以上,游离甲醛含量低于0.03%,稳定性较好。
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| 关 键 词： | 水溶性酚醛树脂 两次碱一次回流法 合成 |
Preparation of Water-Soluble Phenol-Formaldehyde Resin Adhesive by Two Step Alkaline Catalysis and One Step Reflux Process |
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| Zhou Taiyan
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Du Ying
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Wang Zhe
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Zuo Xueming
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Xu Zhenyu.Preparation of Water-Soluble Phenol-Formaldehyde Resin Adhesive by Two Step Alkaline Catalysis and One Step Reflux Process[J].Paint & Coatings Industry,2012,42(2):71-74. |
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| Authors: | Zhou Taiyan Du Ying Wang Zhe Zuo Xueming Xu Zhenyu |
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| Affiliation: | 1(1.School of Petrochemical Engineering of Chang Zhou University,Chang Zhou,Jiangsu 213164,China; 2.East Technology Co.,Ltd.,Hefei 230000,China) |
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| Abstract: | The title process was developed to replace the one step alkaline catalysis and two step alkaline catalysis process.The mole ratio of phenol and formaldehyde,time of reaction,temperature of reaction,time of reflow were examined.The result showed that a phenol-formaldehyde resin having cross-linking structure could be prepared from phenol and formaldehyde(molar ratio 1:2) in aqueous solution at 70 ℃/40 min or 80 ℃/20 min followed by one-step 45 min refluxing.Molecular weight and viscosity of products was medium,tensile shear strength was over 5 MPa.The free formaldehyde content in resin was lower than 0.03%,with good stability. |
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| Keywords: | watersoluble phenol-formaldehyde resin two step alkaline catalysis one step reflux preparation |
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