N－100的结构模型

The Structrue Modeling of N-100

在对Ｎ－１００结构进行分析和表征的基础上，描述了Ｎ－１００的形成过程．通过建立结构模型．以高分辨核磁共振波谱（１Ｈ及定量（１３）ＣＮＭＲ）为定量依据，计算了异氰酸酯百分含量、平均官能度和平均相对分子质量．讨论了影响定量准确性的两个因素．对其中来自ＮＭＲ技术方面的主要因素──纵向弛豫时间做了对比．计算结果与实际测试值的一致性说明了结构模型是可行的．

The structure model of N-100 is set up on the base of structure analysis and characterization which indicate there are four kinds of carbonyl groups and five different subetitutions on the nitrogen atom Some ideal assumptions defining the structure formation of N-100 are propoed to calculate the isocyanate contat, average function degree and average relative molecular mass. Two factors affecting the accuracy of the values are discussed. Results show that the effects from different relaxation time of carbon atoms decrease as the pulse-delay increases. The similarity between calculated and values proves that the structure model of N-100 is valid.