Pyrolysis and THM reactions of melamine and its resins
Pyrolysis and THM reactions of melamine and its resins
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DOI：
10.1016/j.jaap.2004.11.001
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发表时间：
2005-08
影响因子：
6
通讯作者：
Manuela Leidl;C. Schwarzinger
中科院分区：
文献类型：
--
作者：
Manuela Leidl;C. Schwarzinger
采用热解-GC/MS和热助水解-甲基化（THM）技术研究了三聚氰胺树脂和三聚氰胺聚酯共聚物。传统的热解仅在500°C以上的温度下才会产生特征挥发性产物，而六亚甲基四胺是主要产物。同时还发现了一系列甲基化三聚氰胺和二次热解产物，THM生成了大量的甲基化三聚氰胺，为树脂和共聚物中三聚氰胺的检测提供了一种灵敏的方法。据此，成功地建立了用四甲基氢氧化铵水溶液合成甲基化三聚氰胺的制备方法。
Melamine resins and a melamine polyester copolymer have been investigated with pyrolysis-GC/MS and thermally assisted hydrolysis and methylation (THM). Conventional pyrolysis yields characteristic volatile products only at temperatures above 500°C and hexamethylenetetramine is the main product. A series of methylated melamines and secondary pyrolysis products were also found. THM yields high amounts of methylated melamines and therefore provides a sensitive method for the detection of melamine in resins and copolymers. Deduced from this results a preparative approach for the synthesis of methylated melamines with aqueous tetramethylammonium hydroxide solution was successfully developed.