PMID- 34771188 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20211118 IS - 2073-4360 (Electronic) IS - 2073-4360 (Linking) VI - 13 IP - 21 DP - 2021 Oct 21 TI - Heat Transfer Modeling of Oriented Sorghum Fibers Reinforced High-Density Polyethylene Film Composites during Hot-Pressing. LID - 10.3390/polym13213631 [doi] LID - 3631 AB - A one-dimensional heat transfer model was developed to simulate the heat transfer of oriented natural fiber reinforced thermoplastic composites during hot-pressing and provide guidance for determining appropriate hot-pressing parameters. The apparent heat capacity of thermoplastics due to the heat of fusion was included in the model, and the model was experimentally verified by monitoring the internal temperature during the hot-pressing process of oriented sorghum fiber reinforced high-density polyethylene (HDPE) film composites (OFPCs). The results showed that the apparent heat capacity of HDPE accurately described its heat fusion of melting and simplified the governing energy equations. The data predicted by the model were consistent with the experimental data. The thermal conduction efficiency increased with the mat density and HDPE content during hot-pressing, and a higher mat density resulted in a higher mat core temperature. The addition of HDPE delayed heat transfer, and the mat had a lower core temperature at a higher HDPE content after reaching the melting temperature of HDPE. Both the experimental and simulated data suggested that a higher temperature and/or a longer duration during the hot-pressing process should be used to fabricate OFPC as the HDPE content increases. FAU - Qi, Chusheng AU - Qi C AD - MOE Key Laboratory of Wood Material Science and Utilization, Beijing Forestry University, Beijing 100083, China. FAU - Wang, Jinyue AU - Wang J AD - MOE Key Laboratory of Wood Material Science and Utilization, Beijing Forestry University, Beijing 100083, China. FAU - Yadama, Vikram AU - Yadama V AD - Department of Civil & Environmental Engineering and Composite Materials and Engineering Center, Washington State University, Pullman, WA 99164, USA. LA - eng GR - 31870536/National Natural Science Foundation of China/ GR - 2021ZY30/Fundamental Research Funds for the Central Universities/ PT - Journal Article DEP - 20211021 PL - Switzerland TA - Polymers (Basel) JT - Polymers JID - 101545357 PMC - PMC8587922 OTO - NOTNLM OT - heat transfer modeling OT - high-density polyethylene OT - hot-pressing OT - sweet sorghum OT - wood-plastic composites COIS- The authors declare no conflict of interest. EDAT- 2021/11/14 06:00 MHDA- 2021/11/14 06:01 PMCR- 2021/10/21 CRDT- 2021/11/13 01:13 PHST- 2021/09/30 00:00 [received] PHST- 2021/10/14 00:00 [revised] PHST- 2021/10/18 00:00 [accepted] PHST- 2021/11/13 01:13 [entrez] PHST- 2021/11/14 06:00 [pubmed] PHST- 2021/11/14 06:01 [medline] PHST- 2021/10/21 00:00 [pmc-release] AID - polym13213631 [pii] AID - polymers-13-03631 [pii] AID - 10.3390/polym13213631 [doi] PST - epublish SO - Polymers (Basel). 2021 Oct 21;13(21):3631. doi: 10.3390/polym13213631.