Anti-Corrosive Epoxy Primer Modified with Nano Particles

Zhang, Yu Zhong; Li, Jing; Liu, Tian Qi; Guan, Zhen Wei; Wang, Yan

doi:10.4028/www.scientific.net/msf.789.112

Cited by 1 publication

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“…The construction of thermal conductivity networks in epoxy resins using nano alumina fillers with high specific surface area provides a very promising opportunity. However, nano fillers are difficult to disperse in epoxy resin and may exhibit agglomeration during the preparation process [33,34]. It is necessary to modify the epoxy resin or nano alumina fillers, as the viscosity of nanoparticles is high, and the cost is high.…”

Section: Introductionmentioning

confidence: 99%

Effect of the alumina micro-particle sizes on the thermal conductivity and dynamic mechanical property of epoxy resin

Xu,

Zhang,

et al. 2023

PLoS ONE

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Epoxy thermal conductive adhesives with high thermal conductivity and dynamic mechanical properties are important thermally conductive materials for fabricating highly integrated electronic devices. In this paper, micro-Al2O3 is used as a thermally conductive filler for the epoxy resin composite and investigated the effect of micron-sized alumina particle size on the thermal conductivity and dynamic mechanical property of epoxy resin by the transient planar hot plate method and DMA (Dynamic mechanical analysis). The experimental results show that with the same amount of alumina filling, the thermal conductivity and Tg (glass transition temperature) of epoxy/Al2O3 composite material decrease with the increase of alumina particle size. The maximum thermal conductivity of the composite material is 0.679 (W/mK), while the energy storage modulus of epoxy/Al2O3 composite material increases with the increase of alumina particle size, and the maximum energy storage modulus of the composite material is 160MPa. Compared with pure epoxy resin, the thermal conductivity and energy storage modulus have increased by 2.7 and 3.2 times, respectively. The epoxy/Al2O3 composite was applied to the COB (Chips On Board) type LED package, and the substrate temperature of the LED dropped to the lowest after 1.5 hours of operation using EP-A5 composite, and the temperature was stabilized at 38.2°C, indicating that the addition of 5-micron alumina composite has the best heat dissipation in the COB type LED package. These results are critical for the implementation of particulate-filled polymer composites in practical applications because relaxed material specifications and handling procedures can be incorporated in production environments to improve efficiency.

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Section: Introductionmentioning

confidence: 99%