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本文首先制备并表征了介孔二氧化硅SBA-15、填充导电聚合物的复合材料PANI/SBA-15和复合材料PPy/SBA-15,并建立双流计实验台开展了材料压片情况下的热导率研究.在测量得到复合材料热导率的基础上,引入当量孔径,结合测量孔径对PANI/SBA-15和PPy/SBA-15复合材料热导率随填充量的变化进行了定性分析.分析表明:PANI/SBA-15和PPy/SBA-15复合材料的热导率比基材SBA-15的热导率大得多;在相同的测量孔径和当量孔径情况下,PANI/SBA-15复合材料的热导率比PPy/SBA-15复合材料的热导率大;导电聚合物填充到复合材料孔道内和孔道外都有助于热导率的提高,填充到孔道内比填充到孔道外对热导率提高的贡献更大.
In this paper, mesoporous silica SBA-15, PANI / SBA-15 filled with conductive polymer and PPy / SBA-15 were prepared and characterized. On the basis of measuring the thermal conductivity of the composite material, the introduction of the equivalent pore diameter and the combination of the measured pore diameters qualitatively analyzed the thermal conductivity of the PANI / SBA-15 and PPy / SBA-15 composites with the change of the filling amount The results show that the thermal conductivity of PANI / SBA-15 and PPy / SBA-15 composites is much higher than that of SBA-15. Under the same measured aperture and equivalent aperture, the thermal conductivity of PANI / SBA- 15 composite thermal conductivity than PPy / SBA-15 composite thermal conductivity; conductive polymer filled into the channel and outside the composite channel are conducive to the improvement of thermal conductivity, filled into the channel than filled to Out of the borehole contributes even more to thermal conductivity.