掺石墨高铝水泥基复合材料的物理性能研究

Research on Physical Performance of Alumina Cement-based Composite

选用石墨作导电填料,高铝水泥作胶凝材料,两者复合制备高铝水泥基导电复合材料,对这类导电复合材料进行了基础的开发性研究。通过测试高铝水泥基复合材料的物理性能,得到高铝水泥基复合材料的体积电阻率、抗压强度和表观密度随石墨掺量的变化规律,并采用无限网链理论描述了高铝水泥基复合材料的导电机理。上述高铝水泥基复合材料的体积电阻率可在106—102Ω.cm之间变化,所得结果具有一定的实用价值。

The physical performance of alumina cement-based composite fabricated by vibratory compaction by using alumina cement as gelling agent and graphite as conductive filler were studied in this paper. The change trends of volume resistivity, compressive strength and apparent density of these composite with graphite content were obtained. And the percolation theory was applied to explain the electrical mechanism of there composite. The experimental results showed that the volume resistivity of these composite vary in 10^6--10^2 Ω·cm, which can be used as antistatic, electric engineering and electro thermal materials.