Shu-jin Zeng

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In the paper, the chemical structure and dielectric properties including dielectric constant epsiv and dielectric loss tandelta of organic-inorganic polyimide/silica composite films, made through sol-gel process and thermal imidization, using pyromellitic dianhydride and 4,4'-oxydianiline as organic precursors and methyl-triethoxysilane as inorganic(More)
In the present paper, a kind of polyimide/silica/alumina hybrid films based on 4,4'-oxydianiline (ODA) and pyromellitic dianhydride (PMDA) was prepared through sol-gel reaction by the hydrolysis and condensation of methyltriethoxysilane (MTEOS) and heteropropyl aluminum in the polyamic acid (PAA) solution of N, N-dimethylacetamide (DMAc). The chemical(More)
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