Temperature dependence of interfacial thickness and conductivity of SIO2/LDPE composite films

doi:10.1016/j.eurpolymj.2017.02.002

	Temperature dependence of interfacial thickness and conductivity of SIO2/LDPE composite films
	Yao, L; Mo G(默广); Mo, G; Han, BZ; Su, B; Chen, MH; Yang, JM; Zhao, H; Yin, JH
刊名	EUROPEAN POLYMER JOURNAL
	2017
卷号	89 页码:119-128
关键词	Synchrotron radiation SAXS Interface layer Composite film SiO2 nanoparticle Conductivity
ISSN号	0014-3057
DOI	10.1016/j.eurpolymj.2017.02.002
文献子类	Article
英文摘要	A melt-blending process was adopted to prepare a 5 wt% and 150 mu m thick SiO2/LDPE (Low-Density Poly-Ethylene) composite film, to study the influence of the microstructure evolution of the composite film on its conductivity when the temperature changes. The results show that there is an interface layer between SiO2 and PI polymer matrix in composite film. When temperature varies from 30 degrees C to 100 degrees C, the interfacial thickness increases from 2.8 nm to 3.5 nm, and remains constant beyond 100 degrees C. DSC (Dynamic Stability Control) shows that this increase is mainly caused by the melting of lamellae of polyethylene polymer chains. DMA (Dynamic Mechanical Analyzer) indicates the bound effect of the interface on the polymer chains of the composite film. When temperature changes from 30 degrees C to 70 degrees C at the heating rate of 10 degrees C/min, the conductivity values of LDPE and SiO2/LDPE change from 1 x 10(-16) to 1 x 10(-14) s/m, 1.5 x 10(-16) to 1.7 x 10(-16) s/m, respectively. The conductivity of the composite film becomes 2 orders of magnitude smaller than that of pure polyethylene film. The increases of interface layer limit the space charge accumulation effectively, and lowers the sensitiveness of conductivity to temperature, resulting in significant improvement of insulating property.
电子版国际标准刊号	1873-1945
WOS关键词	SPACE-CHARGE ACCUMULATION ; SHAPE-MEMORY POLYMERS ; POLYETHYLENE ; DIELECTRICS ; FIELD ; LDPE ; TRANSITION ; CRYSTALS ; GRADIENT ; DC
WOS研究方向	Polymer Science
语种	英语
WOS记录号	WOS:000400037500011
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285197]
专题	高能物理研究所_实验物理中心高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Yao, L,Mo G,Mo, G,et al. Temperature dependence of interfacial thickness and conductivity of SIO2/LDPE composite films[J]. EUROPEAN POLYMER JOURNAL,2017,89:119-128.
APA	Yao, L.,默广.,Mo, G.,Han, BZ.,Su, B.,...&Yin, JH.(2017).Temperature dependence of interfacial thickness and conductivity of SIO2/LDPE composite films.EUROPEAN POLYMER JOURNAL,89,119-128.
MLA	Yao, L,et al."Temperature dependence of interfacial thickness and conductivity of SIO2/LDPE composite films".EUROPEAN POLYMER JOURNAL 89(2017):119-128.