A study of thermal diffusivity of carbon-epoxy and glass-epoxy composites using the modified pulse method

Abstract

Transient heat transfer is studied and compared in two planeparallel composite walls and one EPIDIAN 53 epoxy resin wall acting as a matrix for both composites. The first of the two walls is made of carbonepoxy composite; the other wall is made of glass-epoxy composite, both with comparable thickness of about 1 mm and the same number of carbon and glass fabric layers (four layers). The study was conducted for temperatures in the range of 20-120 o C. The results of the study of thermal diffusivity which characterizes the material as a heat conductor under transient conditions have a preliminary character. Three series of tests were conducted for each wall. Each series took about 24 h. The results from the three series were approximated using linear functions and were found between (0.7-1.35)×10 −7 m 2 /s. In the whole range of temperature variation, the thermal diffusivity values for carbon-epoxy composite are from 1.2 to 1.5 times higher than those for the other two materials with nearly the same thermal diffusivity characteristics.

Heating rate effects on thermal analysis measurement ofTgin composite materials

“…Figure 13 shows that the T g(0) values are very similar for the CFRP, GFRP, and resin specimens, with small heating rate differences. Terpilowski et al 20 found the thermal diffusivity of CFRP to be higher than GFRP, from which it would be expected that the heating rate dependence would be lower for the CFRP specimens (i.e. a reduced thermal lag).…”

On Tribological Behavior of Synthetic Fiber Reinforced Polymer Composites Modified With Fillers, A Review

“…Since the polymer matrix essentially needs to resist higher loads, it is normally reinforced with fibers and fillers. Polymer composites reinforced with synthetic fibers made up of glass [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20], carbon [21][22][23][24][25][26][27][28][29][30], aramid [31][32][33][34] etc. are being extensively deployed in engineering applications because of their exceptional mechanical performance.…”