【摘要】：采用衰減全反射傅里葉變換紅外光譜法(ATR-FTIR)對(duì)31個(gè)品牌電工膠帶的粘合劑進(jìn)行分析,通過(guò)紅外特征吸收峰確定粘合劑的主要成分均為天然橡膠和丁苯橡膠混合物,不同品牌的樣品通過(guò)紅外光譜定性分析無(wú)法區(qū)分。通過(guò)OPUS軟件分別選擇天然橡膠和丁苯橡膠的紅外特征吸收峰進(jìn)行峰面積積分,計(jì)算兩種物質(zhì)特征峰面積的相對(duì)比例,采用單因素方差分析確定不同樣品天然橡膠和丁苯橡膠特征峰面積的相對(duì)比例是否存在統(tǒng)計(jì)學(xué)差異,然后采用最小顯著性差異法進(jìn)行驗(yàn)后多重比較,分析特征峰面積相對(duì)比例存在統(tǒng)計(jì)學(xué)差異的品牌。31個(gè)品牌電工膠帶組成的465組樣品對(duì)中有422組可以區(qū)分,區(qū)分率達(dá)到90.8%。結(jié)果表明,通過(guò)紅外光譜定量分析可實(shí)現(xiàn)不同品牌電工膠帶粘合劑的區(qū)分。
[Abstract]:The adhesive of 31 brands of electrical tape was analyzed by attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR). The main components of the adhesive were determined to be natural rubber and styrene-butadiene rubber by infrared characteristic absorption peak. Samples of different brands can not be distinguished by IR qualitative analysis. The infrared characteristic absorption peaks of natural rubber and styrene-butadiene rubber were selected by OPUS software to integrate the peak area, and the relative ratio of the two characteristic peaks was calculated. Single factor variance analysis was used to determine whether the relative proportion of characteristic peak area of natural rubber and styrene-butadiene rubber was statistically different or not. Among 465 sample pairs of 31 brands, 422 groups can be distinguished, and the distinguishing rate is 90.8%. The results show that the classification of different brands of adhesive for electrical tape can be realized by infrared spectrum quantitative analysis.
【作者單位】： 中國(guó)政法大學(xué)證據(jù)科學(xué)教育部重點(diǎn)實(shí)驗(yàn)室;公安部物證鑒定中心;痕跡科學(xué)與技術(shù)公安部重點(diǎn)實(shí)驗(yàn)室;中國(guó)人民公安大學(xué)刑事科學(xué)技術(shù)學(xué)院;
【分類號(hào)】：O657.33

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