PMID- 38257067 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240129 IS - 2073-4360 (Electronic) IS - 2073-4360 (Linking) VI - 16 IP - 2 DP - 2024 Jan 18 TI - Enhanced Thermal Conductivity of High-Density Polyethylene Composites with Hybrid Fillers of Flaky and Spherical Boron Nitride Particles. LID - 10.3390/polym16020268 [doi] LID - 268 AB - The synergistic effect between different fillers plays a crucial role in determining the performance of composites. In this work, spherical boron nitride (BN) and flaky BN are used as hybrid fillers to improve the thermal conductivity (TC) of high-density polyethylene (HDPE) composites. A series of HDPE composites were prepared by adjusting the mass ratio (1:0, 4:1, 2:1, 1:1, 1:2, 1:4, and 0:1) of spherical BN and flaky BN. The SEM results indicate that the spherical BN (with a particle size of 3 mum) effectively filled the gaps between the flaky BN (with a particle size of 30 mum), leading to the formation of more continuous heat conduction paths with the composite. Remarkably, when the mass ratio of spherical BN to flaky BN was set to 1:4 (with a total BN filling amount of 30 wt%), the TC of the composite could reach up to 1.648 Wm(-1)K(-1), which is obviously higher than that of the composite containing a single filler, realizing the synergistic effect of the hybrid fillers. In addition, the synergistic effect of fillers also affects the thermal stability and crystallization behavior of composites. This work is of great significance for optimizing the application of hybrid BN fillers in the field of thermal management. FAU - Gao, Zhenliang AU - Gao Z AD - Institute of High Performance Polymer, Qingdao University of Science & Technology, Qingdao 266042, China. AD - National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou 450002, China. FAU - Wang, Yiding AU - Wang Y AD - National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou 450002, China. FAU - Zhang, Baogang AU - Zhang B AD - Institute of High Performance Polymer, Qingdao University of Science & Technology, Qingdao 266042, China. FAU - Liu, Li AU - Liu L AD - Institute of High Performance Polymer, Qingdao University of Science & Technology, Qingdao 266042, China. FAU - Liu, Xianhu AU - Liu X AUID- ORCID: 0000-0002-4975-3586 AD - National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou 450002, China. LA - eng PT - Journal Article DEP - 20240118 PL - Switzerland TA - Polymers (Basel) JT - Polymers JID - 101545357 PMC - PMC10819010 OTO - NOTNLM OT - boron nitride OT - crystallinity OT - electron microscopy OT - high-density polyethylene OT - hybrid fillers OT - synergistic effect OT - thermal conductivity COIS- The authors declare no conflicts of interest. EDAT- 2024/01/23 06:43 MHDA- 2024/01/23 06:44 PMCR- 2024/01/18 CRDT- 2024/01/23 01:18 PHST- 2023/12/15 00:00 [received] PHST- 2024/01/03 00:00 [revised] PHST- 2024/01/15 00:00 [accepted] PHST- 2024/01/23 06:44 [medline] PHST- 2024/01/23 06:43 [pubmed] PHST- 2024/01/23 01:18 [entrez] PHST- 2024/01/18 00:00 [pmc-release] AID - polym16020268 [pii] AID - polymers-16-00268 [pii] AID - 10.3390/polym16020268 [doi] PST - epublish SO - Polymers (Basel). 2024 Jan 18;16(2):268. doi: 10.3390/polym16020268.