裂解气相色谱-质谱法研究芳香族聚酯类纤维热分解  

Thermal Decomposition of Aromatic Polyester by Pyrolysis Gas Chromatography-mass Spectrometry

作　　者：钱和生[1] 

机构地区：[1]东华大学分析测试中心,上海201620

出　　处：《合成纤维》2008年第3期25-29,共5页Synthetic Fiber in China

摘　　要：采用裂解气相色谱质谱法研究了600℃时聚对苯二甲酸丁二酯纤维(PBT)、聚对苯二甲酸丙二酯纤维(PTT)和聚对苯二甲酸乙二酯纤维(PET)的热裂解反应,分别鉴别到22种、25种和25种主要裂解产物。PBT的特征性裂解产物是苯甲酸丁烯酯、苯甲酸丁酯、1,4-苯二甲酸-3-丁烯酯、1,4-苯二甲酸-双-3-丁烯酯和二苯甲酸-1,4-丁二醇酯;PTT的特征性裂解产物为苯甲酸丙烯酯、苯甲酸丙酯、对苯二甲酸单丙烯酯、1,4-苯二甲酸-双-2-丙烯基酯、二苯甲酸-1,3-丙二醇酯;PET的特征性裂解产物为苯甲酸乙烯酯、苯甲酸乙酯、苯二甲酸双乙烯酯、二苯甲酸-1,2-乙二醇酯。Pyrolysis of three kinds of aromatic polyester fiber including polybutylene terephthalate, polytrimethylene terephthalate and polyethylene terephthalate had been investigated using pyrolysis gas chromatography-mass spectroscopy. Their compositions of pyrolysates had been analyzed. At 600 ℃, twenty- two, twenty-five, twenty-five specific pyrolysates had been identified for PBT, PTT and PET. The characteristic pyrolysates for PBT fiber were butenyl benzoate, butyl benzoate, 3-butenyl-1,4-terephthalate, bis- 3-butenyl-1,4-terephthalate, 1,4-butanediol dibenzoate. The characteristic pyrolysates for PTT fiber were propenyl benzoate, propyl benzoate,monopropenyl p-phthalate,diallyl terephthalate, 1,3-propanediol dibenzoate. The characteristic pyrolysates for PET fiber were ethylene benzoate, ethylbenzoate, diethylene terephthalate, dibenzoate- 1,2-ethanediol.

关 键 词：聚对苯二甲酸丁二酯纤维 聚对苯二甲酸丙二酯纤维 聚对苯二甲酸乙二酯纤维 裂解 色谱 质谱 热分解 

分 类 号：TQ340.1[化学工程—化纤工业]