조일환
(Korea Institute of Machinery and Materials)
오동욱
(Korea Institute of Machinery and Materials)
박장민
(Korea Institute of Machinery and Materials)
김영
(Korea Institute of Machinery and Materials)
최준석
(Korea Institute of Machinery and Materials)
박상진
(Korea Institute of Machinery and Materials)
By adding carbon nanoparticles, thermal conductivity of polymer composites can be greatly increased. Thermal conductivity of some commercial polymer composites for heat sink applications are reported to be comparable to stainless steel (~ 15 W/mK). However, high concentration of additives can bring problems such as anisotropic nature of physical properties, loss in plasticity and so on. In this study, thermal diffusivity and thermal conductivity of polyethylene based polymer composites are measured by using the laser flash apparatus and differential scanning calorimetry. The thermal conductivity ratio of in-plane and through-plane is found to range between 3 to 5 and increased with additive concentration.