In this study, taking advantage of carbon nano-fiber paper's (CNP) small and thin size, high conductivity, rapid
increasing temperature in low voltage, higher steady state temperature, electrical and heat, it found out a way that place
argentine glue electrode on the CNP's surface and use a kind of transmitting-heat glue fixed thermal couple for testing
the temperature change of CNP following by different voltage in room temperature and adiabatic circumstance. The
electrode attachment method on the CNP developed. Experimental validation studies have verified that the CNP exhibit
highly electrical and heat property and develop a new self-heating concrete using CNP.
The I-V characteristic of the epoxy resin matrix composites containing conductive carbon black (CB) and sprayed CB is experimentally studied. The test results indicate that the I-V characteristic of the CB filled epoxy resin matrix composites is affected by the CB diameter. The composites containing sprayed CB with the diameter of 123nm have a linear relation between current and voltage and no variation in resistance post-exposed to an electric field. However, the composites containing conductive CB with the diameter of 33nm have a nonlinear I-V characteristic and the resistance of the composites post-exposed to an electric field decreases dramatically. A DC circuit model based on the experimental research is proposed. The occurrence of the electrical breakdown induces the nonlinear I-V characteristic and the dramatic decrease of the electrical resistance of the composites post-exposed to an electric field.
The electro-mechanical properties of epoxy resin(EP)/polyimide(PI) composites containing conductive and sprayed
carbon black(CB), respectively, are experimentally studied. The test results indicate that the value of the fractional
change in electric resistance of the EP/PI composites containing conductive GB is too small ,and the electro-mechanical
properties of the EP/PI composites containing sprayed GB under cyclic load is not good enough. However, the EP/PI
composites containing the mixture of sprayed GB and conductive GB behave good electro-mechanical properties and
this kind of conductive films can be used as monitoring material after they are trained through cyclic load.
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