CAJ | 학술논문

在303~393 K 温度范围内，采用变温傅里叶变换衰减全反射红外光谱(ATR-FTIR)技术分别测定硅氧树脂的一维红外光谱、二阶导数红外光谱和四阶导数红外光谱。研究发现，在1800~600 cm-1范围内，聚硅氧树脂主要存在着 CH 3伸缩振动模式(νCH3)、CH 3变形振动模式(δCH3)、CH 3摇摆振动模式(ρCH3)、Si-O 伸缩振动模式(νSi-O )和 Si-C 伸缩振动模式(νSi-C )。在1100~1000 cm-1范围内，以νSi-O 为研究对象，研究了温度对硅氧树脂分子结构的影响。实验发现，随着测定温度的升高，硅氧树脂νSi-O 的主要红外吸收频率出现了明显的红移现象。进一步研究了硅氧树脂νSi-O 的二维红外光谱，考查温度对于νSi-O 红外吸收强度的影响。研究发现，随着测定温度的升高，硅氧树脂νSi-O 红外吸收强度的变化快慢顺序为：1024 cm-1>1096 cm-1>1010 cm-1>1076 cm-1>1083 cm-1>1064 cm-1。本研究拓展了 ATR-FTIR 技术在硅氧树脂材料热变性方面的研究范围。
재303~393 K 온도범위내，채용변온부리협변환쇠감전반사홍외광보(ATR-FTIR)기술분별측정규양수지적일유홍외광보、이계도수홍외광보화사계도수홍외광보。연구발현，재1800~600 cm-1범위내，취규양수지주요존재착 CH 3신축진동모식(νCH3)、CH 3변형진동모식(δCH3)、CH 3요파진동모식(ρCH3)、Si-O 신축진동모식(νSi-O )화 Si-C 신축진동모식(νSi-C )。재1100~1000 cm-1범위내，이νSi-O 위연구대상，연구료온도대규양수지분자결구적영향。실험발현，수착측정온도적승고，규양수지νSi-O 적주요홍외흡수빈솔출현료명현적홍이현상。진일보연구료규양수지νSi-O 적이유홍외광보，고사온도대우νSi-O 홍외흡수강도적영향。연구발현，수착측정온도적승고，규양수지νSi-O 홍외흡수강도적변화쾌만순서위：1024 cm-1>1096 cm-1>1010 cm-1>1076 cm-1>1083 cm-1>1064 cm-1。본연구탁전료 ATR-FTIR 기술재규양수지재료열변성방면적연구범위。
The polysiloxanes molecular structure had been studied by one-dimensional infrared spectroscopy, second derivative infrared spectroscopy and fourth derivative infrared spectroscopy with fourier transform attenuated total reflection infrared spectroscopy (ATR-FTIR)in the temperature range from 303 K to 393 K.The CH 3 stretch vibration mode (νCH3 ),the CH 3 bending vibration mode (δCH3 ),the CH 3 swing vibration mode (ρCH3 ),the Si-O stretch vibration mode (νSi-O )and the Si-C stretch vibration mode (νSi-C )were found from 1800 cm-1 to 600 cm-1 .The tempe-rature effect of the polysiloxanes molecular structure had been studied byνSi-O from 1 100 cm-1 to 1000 cm-1 and red shift was found obviously.Two-dimensional infrared spectroscopy of polysiloxanes was studied to determine the se-quence of intensity changes.It had been found that the sequence of intensity changes was 1024 cm-1 > 1096 cm-1 >1010 cm-1 > 1076 cm-1 > 1083 cm-1 > 1064 cm-1 with the increase of temperature.The study demonstrated the key roles of ATR-FTIR in the analysis of thermal denaturation of the polysiloxanes.