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Preparation and epoxy curing of novel dicyclopentadiene-derived Mannich amines

机译:新型二环戊二烯衍生的曼尼希胺的制备和环氧固化

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Phenol/dicyclopentadiene (DCPD) adducts were prepared from the BF3-catalyzed reaction of p-nonylphenol and dicyclopentadiene at molar ratios of 2:1 and 3:2. The phenol-terminating adducts were consequently reacted with diethylenetriamine and formaldehyde using Mannich reaction conditions. These products containing phenol, amine and tricyclodecane functionalities in the same molecule can be used as epoxy curing agents. The diethylenetriamine was add to the phenol via Mannich reaction at approximately 50% theoretical equivalent. The multiple N-H groups in amines and the O-H groups in phenols provide crosslinking sites for epoxy resins. The cured epoxy resins show improvement in tensile strength and elongation in comparison with those cured by the poly(oxypropylene) diamine (400 molecular weight) or diethylenetriamine.
机译:苯酚/二环戊二烯(DCPD)加合物是由BF3-催化的对壬基苯酚和二环戊二烯的摩尔比为2:1和3:2的反应制备的。因此,使用曼尼希反应条件使酚封端的加合物与二亚乙基三胺和甲醛反应。这些在同一分子中包含苯酚,胺和三环癸烷官能团的产品可用作环氧固化剂。通过曼尼希反应将二亚乙基三胺以约50%理论当量添加到苯酚中。胺中的多个N-H基团和苯酚中的O-H基团为环氧树脂提供了交联点。与通过聚(氧化丙烯)二胺(400分子量)或二亚乙基三胺固化的环氧树脂相比,固化的环氧树脂显示出拉伸强度和伸长率的改善。

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