The effect of chemical crosslinking on the thermal conductivity of high-density polyethylene (HDPE) was investigated. The crosslinking density of HDPE was controlled by the content of the crosslinking agent of dicumyl peroxide (DCP) in molten state. As the content of DCP increased, the gel content of HDPE increased, and crystal structure such as spherulite size and crystallite size, and crystallinity decreased, as network formation suppressed the crystallization of polymer molecules. The thermal conductivity of crosslinked HDPE was proportional to the crystallinity and reciprocal to the gel content.
Bibliographical noteFunding Information:
This work was supported by a grant from the Fundamental R&D Program for Technology of World Premier Materials funded by the Ministry of Knowledge Economy (MKE) and was partially supported by the Institute for Multi-disciplinary Convergence of Materials of the Korea Institute of Science and Technology (KIST) in the Republic of Korea. Synchrotron wide-angle X-ray scattering (WAXS) measurements were performed at the beam line 4C of the Pohang Light Source, Republic of Korea.
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Physical and Theoretical Chemistry