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Citation: LI Dan, SU Xiaosheng, ZHANG Chi. Application of Two-Dimensional Fourier Transform Infrared Correlation Spectroscopy on Dicyandiamide-Epoxy Network[J]. Chinese Journal of Applied Chemistry, ;2015, 32(11): 1275-1282. doi: 10.11944/j.issn.1000-0518.2015.11.150103 shu

Application of Two-Dimensional Fourier Transform Infrared Correlation Spectroscopy on Dicyandiamide-Epoxy Network

LI Dan ^a ,
SU Xiaosheng ^a ,
ZHANG Chi ^b,,

1.
a National Engineering Research Center of Electronic Circuits Base Materials, Shengyi Technology CO., LTD, Dongguan, Guangdong 523808, China;
2.
b School of Chemical Sciences, The University of Auckland, Auckland 1142, New Zealand

Corresponding author: ZHANG Chi,
Received Date: 17 March 2015
Available Online: 17 June 2015
Fund Project: 广东省战略性新兴产业核心技术攻关项目(20110913) (20110913)

In-situ IR has been applied to study the curing reaction process of dicyandiamide(DICY) with epoxy resin. The combination of FTIR and its generalized two-dimensional infrared correlation spectroscopy(2D-IR) to analyze the curing reaction process can effectively enhance the spectral resolution and reveal the details about the reaction mechanism. Four reactions were detected in the resin network:(i) reversible decomposition of DICY and cyanamide;(ii) copolymerization of cyanamide and epoxy resin to form the intermediate product;(iii) copolymerization of cyanamide and the intermediate product to form imines;(iv) rearrangement of the imine structure to form the amide structure. It is very effective to explain the curing mechanism of thermosetting resin by using in-situ IR,FTIR and 2D-IR.
- FTIR,
- two-dimensional correlation analysis,
- dicyandiamide,
- epoxy resin,
- curing reaction
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