糠醇树脂碳化过程的核磁共振研究

NMR study of the carbonization proeess of furfuryl alcohol resin

引用质子的连续波和核磁共振研究糠醇树脂在６０～８６０℃温度范围的碳化过程。并按热处理时发生的结构变化和化学变化解释该结果。加热到２４０℃时分子量和交联度增大；３２０℃时产品充分交联，形成坚硬的结构；３８０℃以上放出氢气并产生顺磁中心，实验证明温度是生产的关键。

Proton CW and palse NMR studies for furfuryl alcohol resin carboniged over the temperature range 60～860℃ are performed. The results are interpreted in terms of structural and chemical changes taking place during heat treatment. Heating up to 240℃results in an inerease in molecular waight and crosslinking;320℃produces crosslinking sufficient to form a rigid structure; 380℃and higher leads to hydrogen release and appearance of paramagnetic centres.