PMID- 30577458 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201001 IS - 1996-1944 (Print) IS - 1996-1944 (Electronic) IS - 1996-1944 (Linking) VI - 12 IP - 1 DP - 2018 Dec 20 TI - Effect of Particles Size on Dielectric Properties of Nano-ZnO/LDPE Composites. LID - 10.3390/ma12010005 [doi] LID - 5 AB - The melt blending was used to prepare 3 wt% ZnO/low density polyethylene (ZnO/LDPE) nanocomposites in this article. The effect of different inorganic ZnO particles doping on the dielectrical property and crystal habit of LDPE matrix was explored. The nanoparticles size was 9 nm, 30 nm, 100 nm, and 200 nm respectively. Scanning electron microscope (SEM) was used to characterize ZnO nanoparticles whereas differential scanning calorimetry (DSC) was used to make thermal characterization of the samples. Besides, the AC (alternating current), DC (direct current breakdown characteristics and electrical conductivity of the nanocomposites was studied in this article. The experimental results showed that nano-ZnO/LDPE composites had the advantages such as small crystal size, high crystallization rate and crystallinity owing to nano-ZnO particles doping, when doping nano-ZnO particles size was 30 nm, the ZnO/LDPE nanocomposite crystallinity crest value 39.77% appeared. At the mean time, the DC and AC breakdown field strength values of composites were 138.0 kV/mm and 340.4 kV/mm respectively. They were the maximal values which improved 8.24% and 13.85% than LDPE. The AC breakdown field strength of samples decreased with specimen thickness increase. The DC breakdown field strength of LDPE and ZnO/LDPE composites were greater than AC breakdown field strength. From the conductivity experimental result it could be seen that when the experimental temperature and electric field intensity rose, the current density and conductivity of ZnO/LDPE composites increased with the enlargement of ZnO particles size. But the values were less than which of LDPE. FAU - Cheng, YuJia AU - Cheng Y AD - Mechanical and Electrical Engineering Institute, University of Electronic Science and Technology of China, Zhongshan Institute, Zhongshan 528402, China. chengyujia1068@163.com. FAU - Bai, Liyang AU - Bai L AD - State Grid Tianjin Wuqing Electric Power Supply Company, Tianjin 301700, China. mdpinao@126.com. FAU - Yu, Guang AU - Yu G AD - Mechanical and Electrical Engineering Institute, University of Electronic Science and Technology of China, Zhongshan Institute, Zhongshan 528402, China. chenglin1068@163.com. FAU - Zhang, Xiaohong AU - Zhang X AD - Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin 150080, China. x_hzhang2002@sina.com. LA - eng GR - 51577045/Zhang Xiaohong/ PT - Journal Article DEP - 20181220 PL - Switzerland TA - Materials (Basel) JT - Materials (Basel, Switzerland) JID - 101555929 PMC - PMC6337467 OTO - NOTNLM OT - LDPE OT - ZnO OT - dielectric properties OT - particles size COIS- The authors declare no conflicts of interest. EDAT- 2018/12/24 06:00 MHDA- 2018/12/24 06:01 PMCR- 2018/12/20 CRDT- 2018/12/23 06:00 PHST- 2018/11/21 00:00 [received] PHST- 2018/12/13 00:00 [revised] PHST- 2018/12/14 00:00 [accepted] PHST- 2018/12/23 06:00 [entrez] PHST- 2018/12/24 06:00 [pubmed] PHST- 2018/12/24 06:01 [medline] PHST- 2018/12/20 00:00 [pmc-release] AID - ma12010005 [pii] AID - materials-12-00005 [pii] AID - 10.3390/ma12010005 [doi] PST - epublish SO - Materials (Basel). 2018 Dec 20;12(1):5. doi: 10.3390/ma12010005.