摘要
通过四甲基氢氧化铵降解方法将4种未知不饱和聚酯树脂中的有机二元酸单体转化为低沸点的二甲酯,采用气相色谱-质谱方法分析了其降解产物及含量。以邻苯二甲酸二丁酯为内标物,采用气相色谱制定了峰面积比与物质的量的工作曲线,对不饱和聚酯树脂中的邻苯二甲酸单体进行了定量分析。结果表明:其中一种不饱和聚酯树脂存在邻苯二甲酸单体,含量为1.9 mmol/100 g,加标量为0.97倍时,加标回收率为97.54%。
The organic dibasic acid monomers in four unknown unsaturated polyester resins were converted into low-boiling dimethyl esters by tetramethylammonium hydroxide degradation method. The degradation products were analyzed by gas chromatography-mass spectrometry. Using dibutyl phthalate as an internal standard,a working curve of peak area ratio and substance molar ratio was established by gas chromatography,and the phthalic monomer in unsaturated polyester resin was quantitatively analyzed. The results showed that one of the unsaturated polyester resins contained phthalic acid monomer and the content was 1. 9 mmol/100 g. The recovery rate of adding standard was 97. 54 % when the adding scalar was0. 97 times.
作者
刘天亚
郑良军
戴文臣
陆绍宁
罗炎
LIU Tian-ya;ZHENG Liang-jun;DAI Wen-chen;LU Shao-ning;LUO Yan(School of Materials Science and Engineering,Guilin University of Electronic Technology,Guilin 541004,China;Guangxi Guilin Zhengsheng Environmental Protection Technology Co.,Ltd.,Guilin 541805,China)
出处
《热固性树脂》
CAS
CSCD
北大核心
2020年第2期34-37,共4页
Thermosetting Resin
关键词
气相色谱
柱前衍生
不饱和聚酯树脂
邻苯二甲酸
加标回收率
gas chromatography
pre-column derivatization
unsaturated polyester resin
phthalic acid
adding standard recovery rate
