Experimental Analysis on the Application of Polymer Matrix Composites Containing Al2O3 for Automotive Lamp Reflector

Abstract

As automotive lamps are highly integrated, the heat generated from bulbs reduces the light quantity and lifespan of the bulbs. Numerous studies have been actively conducted worldwide on heat dissipation designs and material modifications for heat release. In this study, an analysis was carried out of the mechanical, thermal, and morphological characteristics of Polybutylene Terephthalate (PBT) and Polyamide (PA6) matrix composites containing alumina filler; further, their flowability and injection moldability were also studied. The PA6 matrix that was subjected to an addition of 60% alumina was selected as the sample. To compare the performances of the selected composites with that of the fog lamp reflector manufactured with conventional PBT, fog lamp reflectors were fabricated. When 60% alumina was added, the thermal conductivity was improved. Thus, the maximum temperature of the lamp reflector was reduced, and the heat was transferred to the surroundings; this was in contrast to the fog lamp reflector fabricated with conventional PBT.

Effect of different fillers on thermal conductivity, tribological properties of Polyamide 6

“…Ren et al 28 reached 1.18 W/mK when the content of modified Al 2 O 3 was 70 wt.% in the PA6 matrix. Y. Kim et al 29 used 50–70 wt% Al 2 O 3 filler, and the thermal conductivity was increased from 0.25 to 1.16 W/mK. Al 2 O 3 is a promising filler in future industrial applications 14 Wang et al 30 prepared PA6 composites containing AlN and BN, each of which 50 wt.%, and the thermal conductivity were 0.799 and 0.93 W/mK, respectively.…”