Conductivity mechanism of asphalt concrete with the PANI/PP compound conductive fiber
Using SMA -16 (Stone Mastic Asphalt) non-continuous close-graded, a self-made polyaniline / PP (PANI / PP) compound conductive fiber was investigated as electric conduction phase, a new type of conductive asphalt concrete was prepared. The conducting performance tests shown that the conductivity of conductive asphalt concrete logarithmic changed from -12.67 to -6.67, increased by 6 orders of magnitude, and the percolation threshold was 1％. The scanning electron microscopy (SEM) shown that conductive fibers dispersed equably in asphalt concrete. Conduction mechanism of conductive asphalt concrete can be described as an island - network model and with the fiber fraction increased, the distribution of the conductive fiber turned from isolated island model to conductive network chain ,and at the same time the asphalt concrete changed from insulating to conducting accordingly. According to classical percolation theory, a filling factor F and network factor n was introduced, so that determined the meaning and value of the parameters, and established the electrical conductivity of conductive asphalt concrete theoretical formula. The theoretical results were in good agreement with the measured values.
PANI / PP compound conductive fiber asphalt concrete conductive mechanism
Hong Zhang XiaoHua Wu XiaoLei Wang
Dalian Polytechnic University, School of Chemical Industry and Material, Dalian 116034, China
国际会议
11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)
青岛
英文
69-73
2010-09-25（万方平台首次上网日期，不代表论文的发表时间）