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用SAXS研究了炭化温度(1100～1400℃)对PANCF孔特征的影响。结果表明,随着炭化温度的升高,孔洞半长轴(c值)约为2nm孔所占比例逐渐减小,由78.72%逐渐减小至66.64%,而c值约为5nm孔的所占比例逐渐增大,由20.39%逐步增大至32.91%,这可能是由于氮气的逸出和微晶数量的增加所致。随着炭化温度的升高,c值约为2nm和5nm孔的长径比逐渐增加。c值约为5nm孔的长径比最大,达4.65。而c值约为10nm和28～48nm较大孔的孔径逐渐减小且长径比也减小。随着炭化温度的升高,孔的取向角逐渐减小,由25.1°减小至18.9°。
The effects of carbonization temperature (1100 ~ 1400 ℃) on PANCF pore characteristics were studied by SAXS. The results show that with the increase of carbonization temperature, the proportion of pores with a half-length of about 2 nm gradually decreases from 78.72% to 66.64%, while the c value is about 5 nm. The proportion gradually increased from 20.39% to 32.91%, which may be due to the evolution of nitrogen and the increase of the number of crystallites. As the carbonization temperature increases, the aspect ratio of c values of about 2 nm and 5 nm pores gradually increases. The value of c is about 5 nm, and the aspect ratio is the largest at 4.65. While the pore size of larger pores with c value of about 10 nm and 28 ~ 48 nm gradually decreases and the aspect ratio also decreases. As the carbonization temperature increases, the orientation angle of the pores gradually decreases from 25.1 ° to 18.9 °.