二维红外相关光谱在鉴别不同配方树脂中的应用  

Application of Generalized Two-Dimensional Infrared Correlation Spectroscopy on Distinguishing Resin Formulation

作　　者：李丹[1] 苏晓声[1] 杨中强[1] 孟运东[1] 张艳华[1] 王小兵[1] 张驰[2] 

机构地区：[1]广东生益科技股份有限公司国家电子电路基材工程技术研究中心 [2]西南科技大学材料科学与工程学院,四川省绵阳市青龙大道59号621010

出　　处：《光谱实验室》2013年第5期2552-2560,共9页Chinese Journal of Spectroscopy Laboratory

基　　金：广东省战略性新兴产业核心技术攻关项目<高效散热封装基板用覆铜板的关键技术研发与产业化>;专题编号:20110913

摘　　要：采用红外光谱结合二维相关分析技术,对添加不同固化促进剂的环氧树脂进行了快速鉴别研究。结果表明,二者在一维红外光谱图上没有差别,但是在二维红外相关谱图上却存在明显的差异。在对4000—2500cm-1和1600—730cm-1两个区域的同步和异步光谱进行研究后发现,配方B有甲基自动峰的出现,而配方A则无;配方A中基团变化顺序为:—CH3>—CH2>苯环C C,醚C—O—C>—CH2>苯环C C,环氧C—O—C>苯环C C,苯环CH>苯环C C,苯环CH>叔丁基C—C;配方B中基团变化顺序为:环氧C—O—C>苯环C C,醚C—O—C>苯环C C>叔丁基C—C,—CH3>苯环C C>叔丁基C—C。研究得到两种树脂体系中—OH、苯环C C、—CH2、—CH3、叔丁基C—C、醚C—O—C、环氧C—O—C、苯环CH等基团光谱强度的变化相关性。因此,二维相关红外光谱可以用于揭示树脂反应过程中的高分子链段内不同基团的变化规律和相互作用,并用于一维红外谱图无差别的树脂的鉴别。Abstract A practicable and efficient methoct tor ldentification of different epoxy formuations with different curing accelerator was conducted by Fourier transform infrared spectroscopy（FTIR） combined with two-dimensional correlation spectroscopy （2D） technique. The two resin formulations tested were similar to each other in one-dimensional IR spectra but quite different in 2D-FTIR spectra. An investigation on 2D FTIR synchronous and asynchronous spectra disclosed that in the range of 4000--2500cm-1 and 1600--730cm-1, methyl auto-peak appears in the synchronous spectrum of formulation B,while not in the formulation A; As follows are the intensities variations order of formulation A ：--CH3〉--CH2〉 benzene ring C =C, Ether C--O--C〉--CH2〉 benzene ring C=C,Cyclic C--O--C〉benzene ring C=C,benzene ring =CH〉benzene ring C =C,benzene ring=CH〉Tert-butyl C-C;As follows are the intensities variations order of formulation B.Cyclic C--O--C〉 benzene ring C =C, Ether C--O--C〉 benzene ring C=C〉 Tert-butyl C--C,--CH3 benzene ring C=-C〉Tert-butyl C-C. In addition,The correlation intensities of --OH, benzene ring C =C、--CH2.--CH3. Tert-butyl C--C. Ether C--O--C. Cyclic C--O--C and benzene ring =CH can be obtained. The results proved that 2D correlation spectra could enhance the resolution of infrared spectra and increase the capability of identification,which make it a powerful and new approach to identifying different resins.

关 键 词：红外光谱 二维相关分析 固化促进剂 环氧树脂 

分 类 号：O657.33[理学—分析化学]