废弃印刷电路板材料裂解产物的高分辨裂解气相色谱-质谱分析

色谱

废弃印刷电路板材料裂解产物的高分辨裂解气相色谱-质谱分析

张燕红,黄洪,夏正斌,陈焕钦

School of Chemical and Energy Engineering, South China University of Technology, Guangzhou 510640, China

收稿日期:2007-10-10 修回日期:2008-05-01 出版日期:2008-07-30 发布日期:1983-12-25
通讯作者: 张燕红
基金资助:

Characterization of pyrolysis of waste printed circuit boards by high-resolution pyrolysis gas chromatography-mass spectrometry

ZHANG Yanhong, HUANG Hong, XIA Zhengbin, CHEN Huanqin

School of Chemical and Energy Engineering, South China University of Technology, Guangzhou 510640, China

Received:2007-10-10 Revised:2008-05-01 Online:2008-07-30 Published:1983-12-25

摘要/Abstract

摘要： 采用高分辨裂解气相色谱-质谱法(PyGC-MS)分析了FR-4型印刷电路板粉末样品的裂解产物。在氦气氛围中,分别在350,450,550,650和750 ℃下对印刷电路板粉末样品进行热裂解,并通过毛细管气相色谱-质谱对裂解产物进行分析,研究了不同裂解温度下裂解产物分布以及主要裂解产物的产率与裂解温度的关系,根据热分解产物的组成,探讨了热分解反应机理。

关键词: 废弃物 , 裂解, 气相色谱-质谱法, 热分解, 溴化环氧树脂, 印刷电路板

Abstract: Thermal degradation of pyrolysis of waste circuit boards was investigated by high-resolution pyrolysis gas chromatography-mass spectrometry (PyGC-MS) and thermogravimetry (TG). In helium atmosphere, the products of FR-4 waste printed circuit board were pyrolyzed at 350, 450, 550, 650, and 750 ℃, separately, and the pyrolysis products were identified by on-line MS. The results indicated that the pyrolysis products of the FR-4 waste circuit board were three kinds of substances, such as the low boiling point products, phenol, bisphenol and their related products. Moreover, under 300 ℃, only observed less pyrolysis products. As the increase of pyrolysis temperature, the relative content of the low boiling point products increased. In the range of 450－650 ℃, the qualitative analysis and character were similar, and the relative contents of phenol and bisphenol were higher. The influence of pyrolysis temperature on pyrolyzate yields was studied. On the basis of the pyrolyzate profile and the dependence of pyrolyzate yields on pyrolysis temperature, the thermal degradation mechanism of brominated epoxy resin was proposed.

Key words: brominated epoxy resin (BER), printed circuit boards, pyrolysis, thermal degradation, waste , gas chromatography-mass spectrometry (GC-MS)

张燕红,黄洪,夏正斌,陈焕钦. 废弃印刷电路板材料裂解产物的高分辨裂解气相色谱-质谱分析[J]. 色谱.

ZHANG Yanhong, HUANG Hong, XIA Zhengbin, CHEN Huanqin. Characterization of pyrolysis of waste printed circuit boards by high-resolution pyrolysis gas chromatography-mass spectrometry[J]. Chinese Journal of Chromatography.

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