强激光与粒子束2016，Vol.28Issue(6)：064134-1-064134-5,5.DOI:10.11884/HPLPB201628.064134
紫外辐照对聚醚酰亚胺薄膜介电性能的影响
Influence of ultraviolet irradiation on dielectric properties of polyetherimide film
李琳 1程敏 2刘文元 1柯昌凤 1段荔 1付红梅 3郭平稳1
作者信息
- 1. 西北核技术研究所，西安 710024
- 2. 湘潭大学 材料科学与工程学院，湖南 湘潭 411105
- 3. 西北工业大学 应用化学系，西安 710072
- 折叠
摘要
Abstract
The effect of ultraviolet irradiation on the dielectric properties of polyetherimide (PEI)film samples was investi-gated.FT-IR and SEM were used to characterize the molecular structure and the surface morphology of the untreated and treated PEI films in different UV irradiation time.The results show that the absorption peak of the irradiated PEI film at 1724 cm-1 was greater than that of the virgin,which indicates the amount of C=O groups increases with increasing irradiation time,and cracks occurred on the PEI surface.The dielectric properties of PEI films were also studied in detail.The results show that,with the in-crease of irradiation time,the relative dielectric constant and the dielectric dissipation factor increased,surface resistivity de-creased,and volume resistivity was almost unchanged.PEI film of DC breakdown strength firstly increased,and then decreased with the increase of radiation time.Moreover,the irradiated film’s breakdown strengh at a certain irradiation dose is 20% greater than that of the original film,which may be attributed to the crosslinking action under the ultraviolet irradiation.关键词
聚醚酰亚胺/紫外辐照/介电常数/介电损耗/表面电阻率/直流击穿场强Key words
polyetherimide/ultraviolet radiation/dielectric constant/dielectric dissipation factor/surface resistivity/DC breakdown strength分类
信息技术与安全科学引用本文复制引用
李琳,程敏,刘文元,柯昌凤,段荔,付红梅,郭平稳..紫外辐照对聚醚酰亚胺薄膜介电性能的影响[J].强激光与粒子束,2016,28(6):064134-1-064134-5,5.
