Performance and Thermal Analysis of Aluminium Oxide Filled Epoxy Composite as TIM for LEDs

Abstract

Al2O3powder with various particle sizes was prepared by milling process and mixed together with epoxy resin in order to increase the thermal conductivity of resin and decrease the junction temperature of the LEDs. Al2O3 powder filled epoxy resin was applied as thermal interface material (TIM) for an effective system level analysis of thermal transient measurement. The result depicted that the milled Al2O3 powder for 3 hour powder showed the highest thermal conductivity and hence lower in thermal resistance of LED. Moreover, the driving currents also influence the thermal resistance and achieved low thermal resistance when measured at 350mA. The thermal properties of the sample were tested using t3ster. The surface morphology of the samples was tested using FESEM.

Heat transfer enhancement in light‐emitting diode packaging employing different molar concentration of magnesium oxide thin films as a heat spreader

“…Lighting industry through the implementation of solid‐state lighting had gained more acceptance for the past 20 years in all aspects of lighting application at different point of need and by various devices . Solid‐state lighting technology was designed with some improved features; for example, they are more compact and rugged and have low operating power demand and high luminous flux; their colors do not wash out, thereby making them reliable for retail and display; they have long lifetime of more than 50 000 hours; they are directional to the exact point of need and designed with flexibility to be mounted in either simple or complex locations; and they are environmentally friendly .…”

Design of Highly Adhesive and Water-Resistant UV/Heat Dual-Curable Epoxy–Acrylate Composite for Narrow Bezel Display Based on Reactive Organic–Inorganic Hybrid Nanoparticles

“…The inorganic filler, which is a large part of the sealing composite, not only reduces the material cost of the composite, but also improves the physical properties such as the thermal shrinkage, moisture permeability, and mechanical properties [ 14 , 15 , 16 ]. In particular, silica and aluminum oxide particles are mostly utilized in various polymer composite materials [ 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 ]. Since the surface characteristic of the filler particle greatly affects the mechanical properties, the tensile strength can be decreased as a result of an increase in the particle size [ 17 ].…”

“…Through these modifications, the tensile strength and elongation of the polymer composite were improved. Particularly, the organic modification of aluminum oxide surface increased the initial reaction velocity of the epoxy–amine reaction due to the decrease in glass transition temperature of the epoxy resin [ 21 , 22 ]. Furthermore, the nanoscale inorganic fillers showed a tendency to enhance tensile strength and toughness [ 23 , 24 ].…”

Specific Heat and Thermal Expansion Coefficient of Hybrid Epoxy Composites

“…Most often in application with variation in temperature composite materials with epoxy matrix are used. These epoxy matrix can be modified by addition of metallic (aluminum [1,2], copper [3,4], nickel [5], silver [6,7], etc. ), ceramic (alumina [8,9], silicon carbide [10,11], boron nitride [9,12], halloysite nanotubes [13] etc.)…”