Preparation of Novel Corona-Resistance Polyimide/Spherical SiO2 Hybrid Films

Jia Ming Rui

doi:10.4028/www.scientific.net/AMR.716.172

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 716Preparation of Novel Corona-Resistance...

Preparation of Novel Corona-Resistance Polyimide/Spherical SiO₂ Hybrid Films

Abstract:

In this study, a novel type of corona-resistance polyimide/spherical SiO₂ hybrid films based on 3,3,4,4-biphenyltetracarboxylic dianhydride (s-BPDA) and 1,3-bis (4-aminophenoxy) benzene (1,3,4-APB) was synthesized by incorporation with different loadings of spherical SiO₂ particles via in-situ polymerization. All the films were prepared by a so called two-step procedure and finally cured at 300°C. TEM images showed the SiO₂ particles were homogeneously dispersed in the polyimide matrix by means of ultrasonic method and the addition of coupling agent. Experimental results indicated that the hybrid films with much higher inorganic content exhibited good thermal and mechanical properties as well as low water absorption. Especially, the dielectric strength and electric aging time of the hybrid films were obviously enhanced, which was attributed to the highly dispersed spherical SiO₂. The morphology changes of the film surface caused by the electric field were also studied by scanning electron microscope (SEM).

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Periodical:

Advanced Materials Research (Volume 716)

Pages:

172-176

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.716.172

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Online since:

July 2013

Authors:

Jia Ming Rui

Keywords:

Corona-Resistance, Hybrid Film, Polyimide, Spherical SiO₂

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