Affiliation:
1. School of Chemical Engineering and Materials Science, Chung-Ang University, Seoul 156-756, Republic of Korea
Abstract
Owing to their high latent heat enabling thermal energy conservation upon heat absorption and release, phase change materials (PCMs) are attracting increasing interest for use in thermal energy storage systems and next-generation thermal management systems. However, they have limitations such as inherently poor thermal and mechanical properties, which hinder their practical use. To overcome these limitations, we prepared a novel PCM based on polyimide- (PI-) grafted erythritol (PIET) through in situ grafting and imidization using PI. PIET composites that were prepared using oxidized expanded graphite as a filler showed an improved thermal conductivity of 2.56 W·m-1·K-1 in the through-plane direction, a latent heat of 192.5 J·g-1, and a tensile strength enhanced by 119%. Thus, the prepared PCM composites showed the potential for the development of advanced PCMs.
Funder
Industrial Technology Innovation Program
Subject
Energy Engineering and Power Technology,Fuel Technology,Nuclear Energy and Engineering,Renewable Energy, Sustainability and the Environment