煅烧黑色页岩/HDPE复合材料及其电性能研究  

Study on calcined black shale/HDPE composites and its electrical properties

作　　者：韩松 彭锦雯[1] 黎玲 容北国 刘远立[1] 邓卫星[1,3] HAN Song;PENG Jinwen;LI Ling;RONG Beiguo;LIU Yuanli;DENG Weixing(School of Materials Science and Engineering,Guilin University of Technology,Guilin 541004,China;Guilin Hongcheng Mining Equipment Manufacture Co.,Ltd.,Guilin 541004,China;Department of Chemistry and Pharmacy,Guilin Normal College,Guilin 541004,China)

机构地区：[1]桂林理工大学材料科学与工程学院,广西桂林541004 [2]桂林鸿程矿山设备制造有限公司,广西桂林541004 [3]桂林师范高等专科学校化学与药学系,广西桂林541004

出　　处：《绝缘材料》2023年第10期43-49,共7页Insulating Materials

基　　金：广西自然科学基金项目资助(2018GXNSFAA 050030);广西创新驱动发展专项课题(桂科AA19254010);桂林市重点研发项目(202003B03526)。

摘　　要：为了解决黑色页岩(BS)在作为聚合物填料应用过程中与偶联剂相互作用差、所含硫元素在加工过程中异味重等问题,本研究对黑色页岩进行煅烧加工,利用XPS、FTIR、SEM等分析了煅烧对页岩组成和形貌的影响。随后制备了煅烧BS/高密度聚乙烯(HDPE)复合材料,并测试了复合材料的热学性能、力学性能和电学性能。结果表明:煅烧去除了BS中的有机质和硫铁矿,600℃下煅烧后BS的碳原子摩尔比由35.95%下降到6.98%,而硫原子摩尔比已经不可测出,页岩保持层状结构并有片层裂碎现象,且页岩层间距略有缩小。煅烧BS/HDPE复合材料的冲击强度比天然BS/HDPE的冲击强度提升显著,这是因为煅烧后的BS与HDPE之间存在大量的界面粘接,而天然BS与HDPE之间完全分离。煅烧BS/HDPE复合材料的体积电阻率维持在4.79×10^(16)Ω·cm及以上,表明煅烧BS的加入对复合材料的介电性能影响较小,复合材料拥有较好的电绝缘性能。In order to solve the problem of poor interaction between black shale(BS)and coupling agent in the application process of polymer filler,and the strong odor of sulfur-containing elements during the processing,BS was processed by calcination,the effect of calcination on the composition and morphology of BS was analyzed by XPS,FTIR,and SEM.Then calcinated BS/high density polyethylene(HDPE)composites were prepared,the thermodynamic,mechanical,and electrical properties of the composite materials were tested.The results show that after calcination,the organic matter and pyrite in BS are removed,and the molar ratio of carbon atom in BS decreases from 35.95%to 6.98%,while that of sulfur atom is no longer detectable.The shale maintains a layered structure and has lamellar fragmentation,and the spacing between shale strata is slightly reduced.The impact strength of calcined BS/HDPE composites are significantly higher than that of natural BS/HDPE,because there is a large amount of interfacial bonding between calcined shale and HDPE,while natural shale and HDPE are completely separated.The volume resistivity of the calcined BS/HDPE composites maintains at 4.79×10^(16)Ω·cm or higher than that,it is showed the addition of calcined BS has little effect on the dielectric properties of the composites,so that they have good electrical insulation properties.

关 键 词：黑色页岩 高密度聚乙烯 煅烧 冲击强度 体积电阻率 

分 类 号：TM215[一般工业技术—材料科学与工程]