采用有机紫外线吸收剂UV327通过固相原位接枝法对炭黑进行改性制备复合型紫外线吸收剂。通过红外光谱（FT-IR）和扫描电镜（SEM）测试,表征了炭黑（CB）及改性炭黑（m-CB）的结构及其在聚对苯二甲酸乙二醇酯（PET）基体中的分散性,结果表明,UV327成功接枝到炭黑表面,m-CB在PET基体中的分散也很均匀。采用差示扫描量热（DSC）和UV-vis分光光度计研究了PET/CB和PET/m-CB薄膜的结晶性能和对紫外线及可见光的透过性能。与CB相比,m-CB对PET有更强的成核效应,添加m-CB的PET复合材料薄膜吸收紫外线能力更强,并且m-CB可以降低PET薄膜的雾度。
Modified carbon black （m-CB） was prepared using a mlid phase modification method through mechanical blending of CB with a commercial UV abmrber UV327. Fourier transfoml infrared spectroscopy （FT-IR） proves that UV327 is grafted on CB successfully. Scanning electron microscopy （SEM） shows that the modification of CB obviously reduces the aggregate sizes of CB, leading to better dispersion of m-CB in PET films. Crystallization behavior and UV-vis transmittance of PET/CB and PET/m-CB nanocomposite films were examined by differential scanning calorimeter （DSC） and UV-vis spectrophotometer. The results show that nucleating ability of m-CB is more effective than that of CB in PET film, and the UV protection property and the transparency of PET/m-CI3 fihn are much better than that of PET/CB films.
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