国产AG-80树脂杂质含量的分析
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Keywords: TGDDM,(N,N,N,’,N,’-四缩水甘油基-4,4’-二氨基二苯基甲烷),环氧树脂,A,G-80,杂质
Abstract:
采用化学分析方法,测定了国产四官能度TGDDM树脂(AG-80)的各种形式的羟基和氯的含量及环氧值,并结合文献报道的高压液相色谱(HPLC)图,定量给出了该树脂中各种结构的杂质含量。结果表明:国产AG-80树脂中的羟基和氯的含量高于国外同类产品,尤其是羟基的含量非常高,环氧值及TGDDM单体的含量与国外同类产品相比也较低。制备过程中避免水解的发生是提高国产AG-80树脂的纯度和环氧值的主要方法。结果还表明:单纯依靠HPLC谱不能全面定量地分析TGDDM环氧树脂中的杂质,但通过测定树脂中各种形式的羟基和氯的含量与HPLC结合,可以定量给出TGDDM树脂中各类杂质的含量。
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