朱强强, 王静. 基于ATR-FTIR的航空丁腈橡胶鉴别研究[J]. 失效分析与预防, 2021, 16(2): 98-101, 106. DOI: 10.3969/j.issn.1673-6214.2021.02.003
    引用本文: 朱强强, 王静. 基于ATR-FTIR的航空丁腈橡胶鉴别研究[J]. 失效分析与预防, 2021, 16(2): 98-101, 106. DOI: 10.3969/j.issn.1673-6214.2021.02.003
    shu
    ZHU Qiang-qiang, WANG Jing. Identification of Aeronautical Nitrile Rubbers Based on ATR-FTIR[J]. Failure Analysis and Prevention, 2021, 16(2): 98-101, 106. DOI: 10.3969/j.issn.1673-6214.2021.02.003
    Citation: ZHU Qiang-qiang, WANG Jing. Identification of Aeronautical Nitrile Rubbers Based on ATR-FTIR[J]. Failure Analysis and Prevention, 2021, 16(2): 98-101, 106. DOI: 10.3969/j.issn.1673-6214.2021.02.003
    shu

    基于ATR-FTIR的航空丁腈橡胶鉴别研究

    Identification of Aeronautical Nitrile Rubbers Based on ATR-FTIR

      摘要
    • 摘要: 以航空丁腈橡胶为研究对象，分析衰减全反射傅里叶变换红外光谱（ATR-FTIR）鉴别丁腈橡胶的理论依据。橡胶试样经无水乙醇萃取、干燥和图谱定量后，统计分析多种牌号航空丁腈橡胶氰基（—C≡N）与—CH=CH2吸收峰的吸光度比R2237/967值与生胶丙烯腈含量的半定量对应关系。结果表明：丁腈−18的R2237/967值为0.089~0.095；丁腈−18+丁腈−26混用橡胶R2237/967值为0.146~0.149；丁腈−40的R2237/967值约为0.224；生胶丙烯腈含量越高，R2237/967值越大，可依据R2237/967值对航空丁腈橡胶作进一步鉴别。

       

      Abstract: Aeronautical nitrile rubber (NBR) was taken as the research object. The theoretical basis for identification of NBRs by ATR-FTIR was analyzed. The rubber samples were extracted by absolute ethyl alcohol, dried and quantitatively analyzed by spectrum. Then for different aeronautical NBRs, the semi-quantitative corresponding relationship between the absorbance ratio R2237/967 of —C≡N absorption peak to —CH=CH2 absorption peak and the content of acrylonitrile was statistically analyzed. The results show that the R2237/967 range of nitrile-18 NBR is 0.089~0.095, the R2237/967 range of the mixture of nitrile-18 NBR and nitrile-26 NBR is 0.146~0.149, and the R2237/967 range of nitrile-40 NBR is about 0.224. The higher the content of acrylonitrile is, the greater the R2237/967 is. NBRs can be further identified according to R2237/967.

       

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